CA2205768A1 - Vibration-reduced impact tool and vibration isolator therefor - Google Patents
Vibration-reduced impact tool and vibration isolator thereforInfo
- Publication number
- CA2205768A1 CA2205768A1 CA002205768A CA2205768A CA2205768A1 CA 2205768 A1 CA2205768 A1 CA 2205768A1 CA 002205768 A CA002205768 A CA 002205768A CA 2205768 A CA2205768 A CA 2205768A CA 2205768 A1 CA2205768 A1 CA 2205768A1
- Authority
- CA
- Canada
- Prior art keywords
- elastomeric
- piston
- housing
- vibration
- isolator
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25D—PERCUSSIVE TOOLS
- B25D17/00—Details of, or accessories for, portable power-driven percussive tools
- B25D17/04—Handles; Handle mountings
- B25D17/043—Handles resiliently mounted relative to the hammer housing
Abstract
A vibration-reduced impact tool is disclosed wherein an elastomeric vibration isolator is fixedly attached within the tool housing and functions to absorb the vibration typically transmitted from the handle to the operator. The isolator is mounted between the cylinder assembly and the handle. As the tool is operated, a piston within the cylinder assembly is driven forward where it impacts with a tool accessory. The impact causes the piston and cylinder assembly to slide rearward in the tool housing, toward the handle. The elastomeric isolator absorbs the rearward movement of the cylinder assembly and thereby eliminates much of the vibration normally transmitted from the cylinder assembly to the handle and in turn, to the operator.
Description
TIT~E: VIBRATION-REDUCED Il~ACT TOOL AN~ V~RAT~ON
I~OLATO~ THE~E~O~
~X~L~ OF T~lE INVENT~ON
5 1. TEC~ICAL Fll :LI~
This invention relates ~enerally to the field of ~mpact tools and more speciGc~lly to a pneumatic impact tool, such as a riveter and vibration isolator ~erefor.
I~OLATO~ THE~E~O~
~X~L~ OF T~lE INVENT~ON
5 1. TEC~ICAL Fll :LI~
This invention relates ~enerally to the field of ~mpact tools and more speciGc~lly to a pneumatic impact tool, such as a riveter and vibration isolator ~erefor.
2. BACKGROU~ ~l~T
Pne~ tic ("~ir ') impact tools are hand-held power tools used in v uious indus~ies.
10 As is well-k~owrl m the arS the tool hou~ing includes an inner ch~nber enclosing a cylinder ~sembly having a piston rcciprocally movable therei~ ~arious ~ccessories can be mounted on t~e nose of ~he tooL As compressed air enters :he inner ¢hamber of ~e housing from the handle ofthe tool~ the piston Leciproeal~s forw~rd in ~e cyli~der assembly until it impa~t~
with an ~.cesss~ th~t has been mounted on t~e tool's nose ~nd ~ ~c¢essoIy then impacts 15 w~th aworkpiece. The s~ actiorl ofthe plston on the accessory causes ~c piston and ~e cylinder assembly to recoil, traveli~ rearw~d in the housing, toward the handle.
Th~s, it i~ de~ ble to provide a vibratloll lsolator that can fiJnction to absor~ ~le vibra~on ~n~mitt~rl l:o ~e tool hsndle and in tuu~ to ~e operator due to ~e rea~ward recoil of the piston ~nd cylinder assembly. It is also desirable to providc a vibr~ion isolator that 20 can be ~lized with exis~n~ p~ell1m~tic impact tool construction and ~at employs m;nimal number of compone~ts.
U.S. Patent 4,776,408, issued October 11, 1988 to Ell~ et ~., discloses a l~n~ mRtic impact tool h~vmg a cllchionin~ ~sselnbly for cushioning ~e repeatcd recoil of a h~mmer .. .. .. . ... .. ....
pisto~. The c~shioning assembly comprises a plurality ~:~ parts, includulg ~n ~Ilcrgy-~iS~ir~n~ rnpina sub-~s~mhly and an ener~-stor~ll~ coil sprin" sub-assembly srran~ed in series to operate indepetl~ntly and sim-~lt~neously to cushion the piston's re~w~rd moveme~t.
U.S. P~tent 5~441,1~2~ issued Au~ust 15, 1995 to Sug~ta e~ al., discloses a faslener dri~ing tool which includes a ri~g bumper which fimc~ons as a shock al~sQrber of a piston to prevent ~double-drivin~" of the tool. The r~ bumper is positiorled with~n ~e forward end ofthe c5~1inder, i~o~ward of ~e piston. As the tool is ol)ela~ he piston will be driven forward, st~ ng the bumper, which then moves forwald, prevenin~ a repeated drive o~the 10 piston.
U.S. Patent 5,400,860, issued M3r~ ~8, 1995 to Best et ~ discloses 3n a~ lus for re~ vibration tr~ncmi~sion in hand-held tools. The apparatus is compnsed of a lt;hl-lP. of co~ o~lents, inellldiIlp a male ~strocoI~cal portioll whose tip is located fa¢ing a female bed and wllerein ~le ~ase of ~e male polfion is attached to ~e to~l handle and ~e 15 female portion is ~ che~ to the worldng end of ~le tool. Retained between ~e 'dp of ~le male por~on and ~e female por~on a~e three nlbb~r balls. ~s ~e female portion moves in rela~on to the working end of the too1, ~e mbber balls act as ~qbro-isolators.
- U.S. P~tent 5,407,01~, issued April 187 1995 to Henry, discloses a mulh-part vibration a~d noise ~ fll~on means intelposed between the front end of a hollow tool housi~g and 20 the reciprocating impact member. The attenuation means ha~ a l~min~r co~figurahon, ~ 4 -- ~ 2 formed ~ ~ ~rst oukr ]~yer of solid e~ton2~ic m~teri~l, a ng~d metal ~mler l.ayer and a second outer layer of solid çl~tomenc mater~al.
SUMMARY OF 'r~E ~NVb~NT~ON
S It is arL advanta~ of ~he ~resent mvention ~ provide a pneumatic impact tool ca~ble of reduc~ng the vil~r~tio~ ~arlsmitted ~om the tool to t~e operator of ~e tool.
It is another advantage ofthe present ~nventio~ to proYide an el~stomer~c i~olator for use with a pnelml~hc impact tool which is durable, hav~n~ opl~ wear and oi} re~ nce~
and whi~h provides superior d~rn~inE v~lue, while m~int~inin~ satisf~ctoIy tool "~eel".
It is a fi~r~er a~lv~-~ ofthe present inveIl~on to pro~ide a me~od for re~lllcin~T ~e ~ih~tinn ~ t;d ~om the handle o~al~nellm~tic impact tool to the operator by providin~
an elqstomeT-c isolator which is complised of minim~l componerlts and which is inexpensive to m~nllf~ture.
It is s~ll anolher advantage of ~e p~ese~t inve~on to provide an el~sto~elic isolator foruse with a pnP.Ilm~hc impacttool which can casily be integrated into e~istin~. pnellm~t~c iInpact tool te~nology.
The foregoing and o~er feat~lres and adv~ntages of ~he present inven~on will be al~alclll from the following more pa~cular descli~lion of a preferred embodiment of ~e ~nven~on, as illlls~ated in the accompal~yill~ dra~ s.
.~' '' "' ' 1! - ~ 3 . .. . . . ..... . .
BRIEF DESCRIPTlON OF THE D:R~WINGS
The piefel~ed exemrl~y emb~iment of ~le presellt illventioll will here~n3~cr bc descnbed i~ conju~ction wi~h the appended drawin~s, where~ like reference desi~
denote like el~ment.c, and:
~G~R~ 1 shows ~ cut-aw~y view of ~e impact tool a~d el~t-lmPric vibradon isolator according to a ~refel-~d embo~iment of the present invention.
FIGU~E 2 shows a ~ont ~iew of ~he elastome~c v~bra~on isolator according to a c~e~ed embodime~ of the prese~t in~e~tio~L
FiL~ 3 shows a cross-section~l view, taken along line Z-2 of ~IGURE 2, of ~e 0 ~l~sto~ric vibration isolator according to a pre~erred e~nbod~ent of the present inven~on.
l~ETA:LLE:D ~ESCRIPTlOh~ O~ T.~ DRAWINGS
Refen in~ now spe¢ifi¢~lly to the dla~g,s, ~he~e is illus~ated ~ vibration-reduced imp~cttool, gcn~ ly de~ tedas I0. ~mpacttool l0canbeanyhand-held,pi~ton-dr;vcn tool, such as a c~pper, h~mm~r, tamper, jac~h~mm~r, nveter or the like. ~'he tool can h~v~
va~ious type h~nrl~es, such as a pistol-g~p or s~aight liIle. For puIposes of illustration, ~e p~esent inven~on will be des~ ~ibetl in tenns of a pneurnatic ri~eter, h~ving a pistol-g~p.
Refemn~ now to FiL~. I, tool l0 comprises a housing 1 l u ~ an inner ch~mber 12,ahandle por~on l3, and a nose portion 14. H~ndle portion 13 includes a throtde l5, which fi~nc~ons to control ~e operation oftool 10. In ~is illustration, throttle 1~ con~ols ~e flow of compressed air from assembl~ l~, to power tool I0.
. ~ vv 4 Pos;~o~ aIon~ che lnn~ n~l axis of ilmer cha~ber 12 is cylinder assembly 17, hi~h is co~prised of cylinder housin~ lg and cylinder 1~. Cylinder housin~ s ~dj~cent to ~le ~mler surface of housing 11 and ~t~nds beyond housing 11. Cylinder 1~ is re~iprocally mov~ble within cylinder housin~ 18 3~d e~f~P.ntls beyond cylinder housing 18.
Retai~er 20 is fitted ov~ e~posed cylinder nose por~on 2t to provide a point of att~hment for vaIious accessories, dependi~g on ~e work piece tool 10 is bein~ used Wi~l.
Reciprocally movable from a ~ulw~ positioL impacting with retainer 20, and a rea~ward posi~on proxum~te handle por~on 13, is a piston 22. The ~mpact force of piston ~ drives ~he accessory, in this example, a nveter ~ccessoly.
Positioned wit~ inner chamber 12 o~housing 11, distal f~om nose portion 14 and proxim~te handle por~on 13, is ~n el~stomeric vibration isolator 23. Vibration isolato~ 23 is comprised of an imler member ~4,, an eIastomeric member 2~ d an ollter mPmhe~ 26.
Inner member ~4 is preferably formed of a m~teri~l having the characteris~s of steel and disk-shaped aIld has an sperture 27 for receivirlg a fastener such ac a cap screw.
SuIround~ng ~e circ~~ lial peripheIy o~ inner member 24 is the e~ctomeric member 25~ 1 he worki~lg component of vibr~tion isolato~ ~3. F1R~tOmer;C member 25 is preferably formed o~a ~eoprene el~ctrlmer rubber, although olher materi~ls are recogni~d.
The use of neoprene rubber provides op~ r~lJility a~d oil resistance. A plurality of apertures 28 are molded into the elastomer body to ~lIow air passage. A shoulder is also 20 molded ~nto ~e elastomenc member, to improve vibration dampe~n~.
., . ~s~pp 5 Encircli~ el~t~meric member 25 is outer member 26, whicl~ similar to inner member ~4, is preferably foImed of ~ matenal having dle charactçn~l~cs of steel. Outer m~mber 2G incl~ldes a flange 29 which provides a second point o~ ctlme~t to vibrahon isolator ~.
W~en opera~Yely po-sittone~ in housin~ 11, inner member 24 will be attached to ~e ~earw~rd por~on of cylinde~ assembly 18 by means of a screw passing through aperture 27, and outer member 26 will be att~ched to handle 13 by means of ~ange ~9. Thus, e~stolneTic v~bration isolator 23 elastically couples the cyliIlder ~ssembly 17 to the ha~dle portion 13 of housing 11, allowing relative motion belween the two, resulting ~n handle 10 isolaho~ d a re~ ti~n i~l ~e ~hr~inn ~n ~mi~P~ to the operator.
Now that one is f~ r with the conslruction of the impact tool an~ el~sto~etic vibratiotl isolator of the p~esent ~ven'don, ~e ~et~od of operation will be described.
In practice, the tool O~)Crd~Ol' w~ll depress ~rottle 15, e~ assembly 16 and f~ e ilow of col~pr~ssed air ~rou~h ~ndle 13 into cylinder assembly 17. The, force 15 of co~ ssed air callses piston ~ to ~cipl~;)c~Le forward withi~ cylinder 19 uIltil it impacts with the ~ccesso~y held by retainer 20. I~s slIiking ac~on causes piston 22 and cylind~r 19 to reciprocate in a rearw~rd di~ec~on, towa~d handle 13 and the tool operator. Wi~out elastomeric vibratioII isolator 23, cylinder l9 would s~ike handle 13 directly a:[~d ~is vibra~on would be tr~ncmitt~l to the tool oper~tor. ~Iowever, in ~he tool of the present 20 inve~on, ~e recoi}ing l~ovement of cylinder 19 is absorbed by ~e elastomeric member 25 of isolator 23 ~d han~le 13 is thereby i~ol~ted i~om vibration.
,t' ' ' ' ' ' '~'7 9 6 The em~o~imPnt~ disclosed herei~ h~e ~een ~iscussed for ~e pulpose of f~ ing the ~eader wi~ ~e noYel ~pec:s of lhe invention. ~l~ough ~ r~ d emboAimentc of ~e invenho~ have been showII, many changes, modifica~ons and s~lbs~ ons may be made by o~e of ord~aly skill in ~e art w~thout necess~rily departing s from ~e ~pi~it and scope of ~he illven~on ~c descnbe(l in the followin~ cla~ms.
'- E ' ,~'~"v~ pp 7
Pne~ tic ("~ir ') impact tools are hand-held power tools used in v uious indus~ies.
10 As is well-k~owrl m the arS the tool hou~ing includes an inner ch~nber enclosing a cylinder ~sembly having a piston rcciprocally movable therei~ ~arious ~ccessories can be mounted on t~e nose of ~he tooL As compressed air enters :he inner ¢hamber of ~e housing from the handle ofthe tool~ the piston Leciproeal~s forw~rd in ~e cyli~der assembly until it impa~t~
with an ~.cesss~ th~t has been mounted on t~e tool's nose ~nd ~ ~c¢essoIy then impacts 15 w~th aworkpiece. The s~ actiorl ofthe plston on the accessory causes ~c piston and ~e cylinder assembly to recoil, traveli~ rearw~d in the housing, toward the handle.
Th~s, it i~ de~ ble to provide a vibratloll lsolator that can fiJnction to absor~ ~le vibra~on ~n~mitt~rl l:o ~e tool hsndle and in tuu~ to ~e operator due to ~e rea~ward recoil of the piston ~nd cylinder assembly. It is also desirable to providc a vibr~ion isolator that 20 can be ~lized with exis~n~ p~ell1m~tic impact tool construction and ~at employs m;nimal number of compone~ts.
U.S. Patent 4,776,408, issued October 11, 1988 to Ell~ et ~., discloses a l~n~ mRtic impact tool h~vmg a cllchionin~ ~sselnbly for cushioning ~e repeatcd recoil of a h~mmer .. .. .. . ... .. ....
pisto~. The c~shioning assembly comprises a plurality ~:~ parts, includulg ~n ~Ilcrgy-~iS~ir~n~ rnpina sub-~s~mhly and an ener~-stor~ll~ coil sprin" sub-assembly srran~ed in series to operate indepetl~ntly and sim-~lt~neously to cushion the piston's re~w~rd moveme~t.
U.S. P~tent 5~441,1~2~ issued Au~ust 15, 1995 to Sug~ta e~ al., discloses a faslener dri~ing tool which includes a ri~g bumper which fimc~ons as a shock al~sQrber of a piston to prevent ~double-drivin~" of the tool. The r~ bumper is positiorled with~n ~e forward end ofthe c5~1inder, i~o~ward of ~e piston. As the tool is ol)ela~ he piston will be driven forward, st~ ng the bumper, which then moves forwald, prevenin~ a repeated drive o~the 10 piston.
U.S. Patent 5,400,860, issued M3r~ ~8, 1995 to Best et ~ discloses 3n a~ lus for re~ vibration tr~ncmi~sion in hand-held tools. The apparatus is compnsed of a lt;hl-lP. of co~ o~lents, inellldiIlp a male ~strocoI~cal portioll whose tip is located fa¢ing a female bed and wllerein ~le ~ase of ~e male polfion is attached to ~e to~l handle and ~e 15 female portion is ~ che~ to the worldng end of ~le tool. Retained between ~e 'dp of ~le male por~on and ~e female por~on a~e three nlbb~r balls. ~s ~e female portion moves in rela~on to the working end of the too1, ~e mbber balls act as ~qbro-isolators.
- U.S. P~tent 5,407,01~, issued April 187 1995 to Henry, discloses a mulh-part vibration a~d noise ~ fll~on means intelposed between the front end of a hollow tool housi~g and 20 the reciprocating impact member. The attenuation means ha~ a l~min~r co~figurahon, ~ 4 -- ~ 2 formed ~ ~ ~rst oukr ]~yer of solid e~ton2~ic m~teri~l, a ng~d metal ~mler l.ayer and a second outer layer of solid çl~tomenc mater~al.
SUMMARY OF 'r~E ~NVb~NT~ON
S It is arL advanta~ of ~he ~resent mvention ~ provide a pneumatic impact tool ca~ble of reduc~ng the vil~r~tio~ ~arlsmitted ~om the tool to t~e operator of ~e tool.
It is another advantage ofthe present ~nventio~ to proYide an el~stomer~c i~olator for use with a pnelml~hc impact tool which is durable, hav~n~ opl~ wear and oi} re~ nce~
and whi~h provides superior d~rn~inE v~lue, while m~int~inin~ satisf~ctoIy tool "~eel".
It is a fi~r~er a~lv~-~ ofthe present inveIl~on to pro~ide a me~od for re~lllcin~T ~e ~ih~tinn ~ t;d ~om the handle o~al~nellm~tic impact tool to the operator by providin~
an elqstomeT-c isolator which is complised of minim~l componerlts and which is inexpensive to m~nllf~ture.
It is s~ll anolher advantage of ~e p~ese~t inve~on to provide an el~sto~elic isolator foruse with a pnP.Ilm~hc impacttool which can casily be integrated into e~istin~. pnellm~t~c iInpact tool te~nology.
The foregoing and o~er feat~lres and adv~ntages of ~he present inven~on will be al~alclll from the following more pa~cular descli~lion of a preferred embodiment of ~e ~nven~on, as illlls~ated in the accompal~yill~ dra~ s.
.~' '' "' ' 1! - ~ 3 . .. . . . ..... . .
BRIEF DESCRIPTlON OF THE D:R~WINGS
The piefel~ed exemrl~y emb~iment of ~le presellt illventioll will here~n3~cr bc descnbed i~ conju~ction wi~h the appended drawin~s, where~ like reference desi~
denote like el~ment.c, and:
~G~R~ 1 shows ~ cut-aw~y view of ~e impact tool a~d el~t-lmPric vibradon isolator according to a ~refel-~d embo~iment of the present invention.
FIGU~E 2 shows a ~ont ~iew of ~he elastome~c v~bra~on isolator according to a c~e~ed embodime~ of the prese~t in~e~tio~L
FiL~ 3 shows a cross-section~l view, taken along line Z-2 of ~IGURE 2, of ~e 0 ~l~sto~ric vibration isolator according to a pre~erred e~nbod~ent of the present inven~on.
l~ETA:LLE:D ~ESCRIPTlOh~ O~ T.~ DRAWINGS
Refen in~ now spe¢ifi¢~lly to the dla~g,s, ~he~e is illus~ated ~ vibration-reduced imp~cttool, gcn~ ly de~ tedas I0. ~mpacttool l0canbeanyhand-held,pi~ton-dr;vcn tool, such as a c~pper, h~mm~r, tamper, jac~h~mm~r, nveter or the like. ~'he tool can h~v~
va~ious type h~nrl~es, such as a pistol-g~p or s~aight liIle. For puIposes of illustration, ~e p~esent inven~on will be des~ ~ibetl in tenns of a pneurnatic ri~eter, h~ving a pistol-g~p.
Refemn~ now to FiL~. I, tool l0 comprises a housing 1 l u ~ an inner ch~mber 12,ahandle por~on l3, and a nose portion 14. H~ndle portion 13 includes a throtde l5, which fi~nc~ons to control ~e operation oftool 10. In ~is illustration, throttle 1~ con~ols ~e flow of compressed air from assembl~ l~, to power tool I0.
. ~ vv 4 Pos;~o~ aIon~ che lnn~ n~l axis of ilmer cha~ber 12 is cylinder assembly 17, hi~h is co~prised of cylinder housin~ lg and cylinder 1~. Cylinder housin~ s ~dj~cent to ~le ~mler surface of housing 11 and ~t~nds beyond housing 11. Cylinder 1~ is re~iprocally mov~ble within cylinder housin~ 18 3~d e~f~P.ntls beyond cylinder housing 18.
Retai~er 20 is fitted ov~ e~posed cylinder nose por~on 2t to provide a point of att~hment for vaIious accessories, dependi~g on ~e work piece tool 10 is bein~ used Wi~l.
Reciprocally movable from a ~ulw~ positioL impacting with retainer 20, and a rea~ward posi~on proxum~te handle por~on 13, is a piston 22. The ~mpact force of piston ~ drives ~he accessory, in this example, a nveter ~ccessoly.
Positioned wit~ inner chamber 12 o~housing 11, distal f~om nose portion 14 and proxim~te handle por~on 13, is ~n el~stomeric vibration isolator 23. Vibration isolato~ 23 is comprised of an imler member ~4,, an eIastomeric member 2~ d an ollter mPmhe~ 26.
Inner member ~4 is preferably formed of a m~teri~l having the characteris~s of steel and disk-shaped aIld has an sperture 27 for receivirlg a fastener such ac a cap screw.
SuIround~ng ~e circ~~ lial peripheIy o~ inner member 24 is the e~ctomeric member 25~ 1 he worki~lg component of vibr~tion isolato~ ~3. F1R~tOmer;C member 25 is preferably formed o~a ~eoprene el~ctrlmer rubber, although olher materi~ls are recogni~d.
The use of neoprene rubber provides op~ r~lJility a~d oil resistance. A plurality of apertures 28 are molded into the elastomer body to ~lIow air passage. A shoulder is also 20 molded ~nto ~e elastomenc member, to improve vibration dampe~n~.
., . ~s~pp 5 Encircli~ el~t~meric member 25 is outer member 26, whicl~ similar to inner member ~4, is preferably foImed of ~ matenal having dle charactçn~l~cs of steel. Outer m~mber 2G incl~ldes a flange 29 which provides a second point o~ ctlme~t to vibrahon isolator ~.
W~en opera~Yely po-sittone~ in housin~ 11, inner member 24 will be attached to ~e ~earw~rd por~on of cylinde~ assembly 18 by means of a screw passing through aperture 27, and outer member 26 will be att~ched to handle 13 by means of ~ange ~9. Thus, e~stolneTic v~bration isolator 23 elastically couples the cyliIlder ~ssembly 17 to the ha~dle portion 13 of housing 11, allowing relative motion belween the two, resulting ~n handle 10 isolaho~ d a re~ ti~n i~l ~e ~hr~inn ~n ~mi~P~ to the operator.
Now that one is f~ r with the conslruction of the impact tool an~ el~sto~etic vibratiotl isolator of the p~esent ~ven'don, ~e ~et~od of operation will be described.
In practice, the tool O~)Crd~Ol' w~ll depress ~rottle 15, e~ assembly 16 and f~ e ilow of col~pr~ssed air ~rou~h ~ndle 13 into cylinder assembly 17. The, force 15 of co~ ssed air callses piston ~ to ~cipl~;)c~Le forward withi~ cylinder 19 uIltil it impacts with the ~ccesso~y held by retainer 20. I~s slIiking ac~on causes piston 22 and cylind~r 19 to reciprocate in a rearw~rd di~ec~on, towa~d handle 13 and the tool operator. Wi~out elastomeric vibratioII isolator 23, cylinder l9 would s~ike handle 13 directly a:[~d ~is vibra~on would be tr~ncmitt~l to the tool oper~tor. ~Iowever, in ~he tool of the present 20 inve~on, ~e recoi}ing l~ovement of cylinder 19 is absorbed by ~e elastomeric member 25 of isolator 23 ~d han~le 13 is thereby i~ol~ted i~om vibration.
,t' ' ' ' ' ' '~'7 9 6 The em~o~imPnt~ disclosed herei~ h~e ~een ~iscussed for ~e pulpose of f~ ing the ~eader wi~ ~e noYel ~pec:s of lhe invention. ~l~ough ~ r~ d emboAimentc of ~e invenho~ have been showII, many changes, modifica~ons and s~lbs~ ons may be made by o~e of ord~aly skill in ~e art w~thout necess~rily departing s from ~e ~pi~it and scope of ~he illven~on ~c descnbe(l in the followin~ cla~ms.
'- E ' ,~'~"v~ pp 7
Claims (8)
1. A vibration-reduced impact tool comprising:
a housing having an inner chamber;
a cylinder assembly operatively assembled within said inner chamber of said housing;
a piston operatively positioned within said cylinder assembly, wherein said piston is reciprocally movable between a forward and rearward position;
means, operatively connected to said piston, for driving said piston;
a handle operatively connected to said housing; and an elastomeric isolator affixed within said inner chamber of said housing, said elastomeric isolator affixed at one point to said cylinder and at a second point to said handle to absorb vibration caused by rearward movement of said piston.
a housing having an inner chamber;
a cylinder assembly operatively assembled within said inner chamber of said housing;
a piston operatively positioned within said cylinder assembly, wherein said piston is reciprocally movable between a forward and rearward position;
means, operatively connected to said piston, for driving said piston;
a handle operatively connected to said housing; and an elastomeric isolator affixed within said inner chamber of said housing, said elastomeric isolator affixed at one point to said cylinder and at a second point to said handle to absorb vibration caused by rearward movement of said piston.
2. The impact tool of claim 1 wherein said means for driving said piston is compressed air.
3. The reduced vibration impact tool of claim 1 wherein said elastomeric isolator comprises:
an inner disk member having an aperture extending therethrough;
an elastomeric member surrounding a circumferential periphery of said inner disk member, said elastomeric member having a plurality of apertures extending therethrough;
and an outer member affixed to a circumferential periphery of said elastomeric member wherein a flange of said outer member extends outwardly from said inner disk member.
an inner disk member having an aperture extending therethrough;
an elastomeric member surrounding a circumferential periphery of said inner disk member, said elastomeric member having a plurality of apertures extending therethrough;
and an outer member affixed to a circumferential periphery of said elastomeric member wherein a flange of said outer member extends outwardly from said inner disk member.
4. The impact tool of claim 3 wherein said inner and outer members are formed of steel and said elastomeric member is formed of neoprene rubber.
5. An elastomeric isolator for use in a vibration-reduces impact tool:
an inner disk member having aperture extending therethrough;
an elastomeric member surrounding a circumferential periphery of said inner disk member, said elastomeric member having a plurality of apertures extending therethrough;
and an outer member affixed to a circumferential periphery of said elastomeric member wherein a flange of said outer member extends outwardly from said inner disk member.
an inner disk member having aperture extending therethrough;
an elastomeric member surrounding a circumferential periphery of said inner disk member, said elastomeric member having a plurality of apertures extending therethrough;
and an outer member affixed to a circumferential periphery of said elastomeric member wherein a flange of said outer member extends outwardly from said inner disk member.
6. The elastomeric isolator of claim 5 wherein said inner and outer members are formed of steel and said elastomeric member is formed of neoprene rubber.
7. A method for reducing vibration transmitted from a handle of an impact tool to an operator of said riveter, said method comprising the steps of:
providing an impact tool having:
a housing having an inner chamber;
a cylinder assembly operatively assembled within said inner chamber of said housing;
a piston operatively positioned within said cylinder assembly, wherein said piston is reciprocally movable between a forward and rearward position;
means, operatively connected to said piston, for driving said piston; and a handle operatively connected to said housing;
providing an elastomeric isolator comprising:
an inner disk member having an aperture extending therethrough;
an elastomeric member surrounding a circumferential periphery of said inner disk member, said elastomeric member having a plurality of apertures extending therethrough; and an outer member affixed to a circumferential periphery of said elastomeric member wherein a flange of said outer member extending outwardly from said inner disk member; and (Claim 7, continued) affixing said elastomeric isolator, within said inner chamber of said housing, to each of said cylinder assembly and said handle to absorb vibration caused by rearward movement of said piston.
providing an impact tool having:
a housing having an inner chamber;
a cylinder assembly operatively assembled within said inner chamber of said housing;
a piston operatively positioned within said cylinder assembly, wherein said piston is reciprocally movable between a forward and rearward position;
means, operatively connected to said piston, for driving said piston; and a handle operatively connected to said housing;
providing an elastomeric isolator comprising:
an inner disk member having an aperture extending therethrough;
an elastomeric member surrounding a circumferential periphery of said inner disk member, said elastomeric member having a plurality of apertures extending therethrough; and an outer member affixed to a circumferential periphery of said elastomeric member wherein a flange of said outer member extending outwardly from said inner disk member; and (Claim 7, continued) affixing said elastomeric isolator, within said inner chamber of said housing, to each of said cylinder assembly and said handle to absorb vibration caused by rearward movement of said piston.
8. The method of claim 7 wherein said step of affixing said elastomeric isolator within said housing further includes the step of:
affixing said inner member to said cylinder assembly by means of a screw passing through said aperture of said inner member; and affixing said flange of said outer member to said handle.
affixing said inner member to said cylinder assembly by means of a screw passing through said aperture of said inner member; and affixing said flange of said outer member to said handle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA002388129A CA2388129A1 (en) | 1996-05-23 | 1997-05-21 | Elastomeric isolator for a vibration-reduced impact tool |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US08/653,728 | 1996-05-23 | ||
| US08/653,728 US5813477A (en) | 1996-05-23 | 1996-05-23 | Vibration-reduced impact tool and vibration isolator therefor |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002388129A Division CA2388129A1 (en) | 1996-05-23 | 1997-05-21 | Elastomeric isolator for a vibration-reduced impact tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2205768A1 true CA2205768A1 (en) | 1997-11-23 |
Family
ID=24622090
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002205768A Abandoned CA2205768A1 (en) | 1996-05-23 | 1997-05-21 | Vibration-reduced impact tool and vibration isolator therefor |
Country Status (9)
| Country | Link |
|---|---|
| US (1) | US5813477A (en) |
| EP (1) | EP0808697B1 (en) |
| KR (1) | KR970073888A (en) |
| CN (1) | CN1068819C (en) |
| BR (1) | BR9703227A (en) |
| CA (1) | CA2205768A1 (en) |
| DE (1) | DE69711117T2 (en) |
| TW (1) | TW460369B (en) |
| ZA (1) | ZA974414B (en) |
Families Citing this family (37)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6318479B1 (en) | 1999-10-01 | 2001-11-20 | Chicago Pneumatic Tool Company | Vibration isolated impact wrench |
| US6321853B2 (en) | 1999-10-01 | 2001-11-27 | Chicago Pneumtic Tool Company | Vibration isolated impact wrench |
| US6161256A (en) * | 1999-11-03 | 2000-12-19 | Quiring; Herbert J. | Drill handle cover |
| US6668942B1 (en) * | 2003-01-03 | 2003-12-30 | Ching-Tien Lin | Damping apparatus for reciprocating pneumatic tools |
| US20050109286A1 (en) * | 2003-11-21 | 2005-05-26 | Packerland Packing Company, Inc. | Vibrating livestock prod with pneumatic actuation |
| TWM258839U (en) * | 2004-05-21 | 2005-03-11 | Chen Shiou Ru | Airflow controlling structure of pneumatic tool |
| TWM268144U (en) * | 2004-05-26 | 2005-06-21 | Chen Shiou Ru | Damping structure for pneumatic tool |
| FR2870770B1 (en) * | 2004-05-27 | 2006-08-11 | Prospection Et D Inv S Techniq | GAS FIXING APPARATUS WITH FRONT FLOATING HEATER MOUNTED HEAT ENGINE |
| SE528471C2 (en) * | 2004-07-05 | 2006-11-21 | Atlas Copco Constr Tools Ab | Vibration dampening striking tool with compressed air supply means |
| BRPI0504616A (en) * | 2005-06-08 | 2006-04-11 | Embraer Aeronautica Sa | anti-vibration coating of aircraft pneumatic hammers handles |
| ATE454248T1 (en) * | 2005-11-16 | 2010-01-15 | Metabowerke Gmbh | MOTOR DRIVEN HAMMER DRILL |
| TWM293826U (en) * | 2006-01-10 | 2006-07-11 | Shuen Tai Prec Entpr Co Ltd | Portable power hammer chisel having shock absorbing guiding sleeve |
| TWI424910B (en) * | 2006-01-27 | 2014-02-01 | Exhaust Technologies Inc | Shock attenuating device for a rotary impact tool |
| US7401662B2 (en) * | 2006-07-06 | 2008-07-22 | Honsa Ergonomic Technologies, Inc. | Powered hand tool |
| JP5015697B2 (en) * | 2007-08-30 | 2012-08-29 | 株式会社マキタ | Impact tool |
| DE102008006030A1 (en) * | 2008-01-25 | 2009-07-30 | Robert Bosch Gmbh | Hand tool, in particular electrically operated hand tool |
| US7896103B2 (en) * | 2008-02-04 | 2011-03-01 | Ingersoll Rand Company | Power tool housing support structures |
| DE102008010100A1 (en) * | 2008-02-20 | 2009-08-27 | Robert Bosch Gmbh | Hand tool |
| US8113296B2 (en) * | 2008-04-25 | 2012-02-14 | Shore Douglas A | Anti-rotation device for an impact tool |
| US8122907B2 (en) | 2008-05-05 | 2012-02-28 | Ingersoll-Rand Company | Motor assembly for pneumatic tool |
| US7886840B2 (en) * | 2008-05-05 | 2011-02-15 | Ingersoll-Rand Company | Motor assembly for pneumatic tool |
| US20090287239A1 (en) * | 2008-05-16 | 2009-11-19 | Ams Research Corporation | Tissue Bulking Device and Method |
| CA2816329A1 (en) * | 2010-10-26 | 2012-05-03 | Thomas W. Honsa | Tool |
| DE102010062874A1 (en) * | 2010-12-13 | 2012-06-14 | Hilti Aktiengesellschaft | Hand tool |
| US9592600B2 (en) | 2011-02-23 | 2017-03-14 | Ingersoll-Rand Company | Angle impact tools |
| US8925646B2 (en) | 2011-02-23 | 2015-01-06 | Ingersoll-Rand Company | Right angle impact tool |
| US8966773B2 (en) | 2012-07-06 | 2015-03-03 | Techtronic Power Tools Technology Limited | Power tool including an anti-vibration handle |
| US9022888B2 (en) | 2013-03-12 | 2015-05-05 | Ingersoll-Rand Company | Angle impact tool |
| US11267042B2 (en) | 2013-03-12 | 2022-03-08 | Honsa Ergonomic Technologies, Inc. | End effector |
| WO2014165301A1 (en) | 2013-03-12 | 2014-10-09 | Honsa Ergonomic Technologies, Inc. | End effector |
| EP2846062B1 (en) * | 2013-09-10 | 2017-05-31 | Integrated Dynamics Engineering GmbH | Vibration insulation system with support which is divided into sections, and method of controlling same |
| US9844867B2 (en) * | 2015-03-24 | 2017-12-19 | Chih Kuan Hsieh | Cushion device for cylinder of pneumatic tool |
| EP3181260B1 (en) * | 2015-12-17 | 2019-09-25 | Robert Bosch Gmbh | Slip detection |
| TWI614455B (en) | 2016-11-21 | 2018-02-11 | Heat gun for lifting the diversion effect | |
| TWI622734B (en) * | 2016-11-21 | 2018-05-01 | Hot air gun with self-cooling system | |
| CN106825367B (en) * | 2016-12-30 | 2019-02-22 | 东莞产权交易中心 | A kind of cup-shaped hammper |
| CN106964814B (en) * | 2017-03-24 | 2019-03-05 | 柳州市昌泉贸易有限公司 | It is a kind of can dust suction and damping electric drill |
Family Cites Families (31)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2058583A (en) * | 1935-12-23 | 1936-10-27 | Independent Pneumatic Tool Co | Cushioned handle for tools |
| US2500036A (en) * | 1945-12-22 | 1950-03-07 | Cleveland Pneumatic Tool Co | Cushioned handle for portable percussive tools |
| US2831463A (en) * | 1955-07-07 | 1958-04-22 | Atlas Copco Ab | Cushioning device for hammer tools |
| US3652074A (en) * | 1970-06-26 | 1972-03-28 | Mcculloch Corp | Mounting means for isolating vibrational energy in chain saw machines |
| GB1374880A (en) * | 1971-12-21 | 1974-11-20 | Daimler Benz Ag | Bumper assemblies for vehicles |
| US3774833A (en) * | 1972-07-21 | 1973-11-27 | Signode Corp | Shock absorbing fastening tool assembly |
| DE2347075C3 (en) * | 1973-09-19 | 1981-10-08 | Daimler-Benz Ag, 7000 Stuttgart | Shock absorber housing attached to a bumper of a motor vehicle |
| US3911580A (en) * | 1974-07-03 | 1975-10-14 | Mcculloch Corp | Coaxial vibrating isolation unit for a chain saw including discrete, independently operable elements |
| US3968843A (en) * | 1975-02-21 | 1976-07-13 | Caterpillar Tractor Co. | Pneumatic percussion tool having a vibration dampened handle |
| US4084801A (en) * | 1975-11-28 | 1978-04-18 | Oil States Rubber Company | Shock energy absorbing multi-segment load cell |
| DE2623826C2 (en) * | 1976-05-28 | 1984-08-02 | Fa. Andreas Stihl, 7050 Waiblingen | Chainsaw |
| JPS5834271B2 (en) * | 1980-07-18 | 1983-07-26 | 日立工機株式会社 | Vibrating tool handle vibration isolator |
| CH655682B (en) * | 1984-02-09 | 1986-05-15 | ||
| DE3405906A1 (en) * | 1984-02-18 | 1985-08-22 | Robert Bosch Gmbh, 7000 Stuttgart | DRIVING DEVICE FOR FASTENING AGENTS, ESPECIALLY ELECTROTACKER |
| US4867366A (en) * | 1984-10-26 | 1989-09-19 | Kleinholz Edward O | Pneumatic fastener-driving tool and method |
| SE452426B (en) * | 1985-06-19 | 1987-11-30 | Eskil Sundstrom | VIBRATION DUMPING HANDLE |
| US4776408A (en) * | 1987-03-17 | 1988-10-11 | Deutsch Fastener Corporation | Pneumatic impact tool |
| PL153526B1 (en) * | 1988-03-29 | 1991-04-30 | Politechnika Poznanska | Pneumatic impact tool |
| US4932480A (en) * | 1988-12-16 | 1990-06-12 | Illinois Tool Works Inc. | Driving tool with air-cooled bumper |
| US5054562A (en) * | 1990-05-02 | 1991-10-08 | Honsa Ergonomic Technologies, Inc. | Vibration-isolated power tool |
| US5172771A (en) * | 1990-11-06 | 1992-12-22 | Charles Machine Works, Inc. | Reversible impact-operated boring tool |
| US5325929A (en) * | 1991-07-09 | 1994-07-05 | Bretec Oy | Hydraulic impact hammer |
| US5400860A (en) * | 1991-12-17 | 1995-03-28 | Ingersoll-Rand Company | Apparatus for reducing vibration transmission in hand-held tool |
| US5259462A (en) * | 1992-08-28 | 1993-11-09 | Ingersoll-Rand Company | Soft mount air distributor |
| WO1994016864A1 (en) * | 1993-01-27 | 1994-08-04 | Lord Corporation | Vibration isolator for hand-held vibrating devices |
| ATE169205T1 (en) * | 1993-03-30 | 1998-08-15 | Integral Medizintechnik | PNEUMATIC IMPACT TOOL |
| US5322131A (en) * | 1993-05-20 | 1994-06-21 | Chicago Pneumatic Tool Company | Vibration-reduced pneumatic tool |
| JPH07156078A (en) * | 1993-12-03 | 1995-06-20 | Kanematsu Nnk Corp | Fastener striking tool |
| US5407018A (en) * | 1994-01-10 | 1995-04-18 | Tc Services | Pneumatic impact tool having improved vibration and noise attenuation |
| US5417294A (en) * | 1994-03-15 | 1995-05-23 | American Pneumatic Technologies | Pneumatic hammer |
| US5431235A (en) * | 1994-04-28 | 1995-07-11 | Ingersoll-Rand Company | Reciprocal chuck for paving breaker |
-
1996
- 1996-05-23 US US08/653,728 patent/US5813477A/en not_active Expired - Fee Related
-
1997
- 1997-05-20 EP EP97201500A patent/EP0808697B1/en not_active Expired - Lifetime
- 1997-05-20 DE DE69711117T patent/DE69711117T2/en not_active Expired - Fee Related
- 1997-05-21 ZA ZA9704414A patent/ZA974414B/en unknown
- 1997-05-21 CA CA002205768A patent/CA2205768A1/en not_active Abandoned
- 1997-05-22 KR KR1019970020031A patent/KR970073888A/en not_active Application Discontinuation
- 1997-05-23 BR BR9703227A patent/BR9703227A/en not_active Application Discontinuation
- 1997-05-23 CN CN97113507A patent/CN1068819C/en not_active Expired - Fee Related
- 1997-06-19 TW TW086106945A patent/TW460369B/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| DE69711117D1 (en) | 2002-04-25 |
| US5813477A (en) | 1998-09-29 |
| TW460369B (en) | 2001-10-21 |
| ZA974414B (en) | 1997-12-23 |
| CN1068819C (en) | 2001-07-25 |
| BR9703227A (en) | 1998-11-03 |
| EP0808697A2 (en) | 1997-11-26 |
| MX9703771A (en) | 1998-06-30 |
| EP0808697B1 (en) | 2002-03-20 |
| DE69711117T2 (en) | 2002-09-19 |
| CN1172716A (en) | 1998-02-11 |
| EP0808697A3 (en) | 2000-04-12 |
| KR970073888A (en) | 1997-12-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA2205768A1 (en) | Vibration-reduced impact tool and vibration isolator therefor | |
| JP3424870B2 (en) | Immersion prevention device for impact tools | |
| US7789168B2 (en) | Vibration reduction apparatus for power tool and power tool incorporating such apparatus | |
| EP0661140B1 (en) | Fastener driving tool | |
| US4476941A (en) | Motor-driven hand-held percussion tool | |
| US4336848A (en) | Tool holder for impact device | |
| US5322131A (en) | Vibration-reduced pneumatic tool | |
| US5626199A (en) | Pneumatic impact tool having improved vibration and noise attenuation | |
| JP4889564B2 (en) | Impact tool | |
| CA1275601C (en) | Percussion device | |
| US5573075A (en) | Pneumatic impact tool having improved vibration and noise attenuation | |
| US4113035A (en) | Hammer drill with drive and percussion elements accommodated in a cylinder | |
| US5213167A (en) | Apparatus for reducing vibration transmission in hand-held tool | |
| EP0336261B1 (en) | Vibro-isolation of connections of structural units of hand tools | |
| US20190344418A1 (en) | Pneumatic Tool with Shock Absorber | |
| TW201325837A (en) | Air hammer tool, and method of adjusting impact force of the air hammer tool | |
| EP1510298A1 (en) | Reciprocating power tool | |
| US6155356A (en) | Percussion tool | |
| EP0737550B1 (en) | Impact hammer | |
| CA2166390A1 (en) | Impact hammer | |
| US5573073A (en) | Compressed fluid operated tool with fluid metering device | |
| SE8903621D0 (en) | Striking Tools | |
| SE8900947D0 (en) | Striking Tools | |
| CA2388129A1 (en) | Elastomeric isolator for a vibration-reduced impact tool | |
| US4669553A (en) | Percussion tool |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| FZDE | Discontinued |