US512381A - James t - Google Patents

James t Download PDF

Info

Publication number
US512381A
US512381A US512381DA US512381A US 512381 A US512381 A US 512381A US 512381D A US512381D A US 512381DA US 512381 A US512381 A US 512381A
Authority
US
United States
Prior art keywords
core
stock
objects
tool
magnetic
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.)
Expired - Lifetime
Application number
Publication date
Application granted granted Critical
Publication of US512381A publication Critical patent/US512381A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B25HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25BTOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B11/00Work holders not covered by any preceding group in the subclass, e.g. magnetic work holders, vacuum work holders
    • B25B11/002Magnetic work holders
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B03SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03CMAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C1/00Magnetic separation
    • B03C1/02Magnetic separation acting directly on the substance being separated
    • B03C1/28Magnetic plugs and dipsticks
    • B03C1/284Magnetic plugs and dipsticks with associated cleaning means, e.g. retractable non-magnetic sleeve
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00Magnets
    • H01F7/02Permanent magnets [PM]
    • H01F7/0231Magnetic circuits with PM for power or force generation
    • H01F7/0252PM holding devices
    • H01F7/0257Lifting, pick-up magnetic objects
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00Magnets
    • H01F7/02Permanent magnets [PM]
    • H01F7/04Means for releasing the attractive force
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S29/00Metal working
    • Y10S29/105Assembly, magnetic, or indicia tool
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S7/00Compound tools
    • Y10S7/901Magnetic feature
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00Metal working
    • Y10T29/53Means to assemble or disassemble
    • Y10T29/53104Roller or ball bearing
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00Metal working
    • Y10T29/53Means to assemble or disassemble
    • Y10T29/53478Means to assemble or disassemble with magazine supply
    • Y10T29/53483Means to assemble or disassemble with magazine supply and magnetic work-holder or positioner
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00Metal working
    • Y10T29/53Means to assemble or disassemble
    • Y10T29/53909Means comprising hand manipulatable tool
    • Y10T29/53943Hand gripper for direct push or pull

Description

Patented Jan. 9, 1894.4
J.T.KEYBS. TOOL FOB HANDLING SMALL METALLIC ARTICLES. No. 512,381.4
(No lodel.)
INVENTR= /wzm WITNESSE'E f UNITED STATES PATENT OFFICE.
JAMES T. KEYES, OF NEW YORK, N. Y.
TOOL FOR HANDLING SN'IALL METALLIC ARTICLES.
SPECIFICATION forming part of Letters Patent No. 512,381, dated January 9, 18914.
I Application led April 12,1893. Serial No. 470,088. (No model.)
To all whom it may eor'wern:4
Be itknown that I, JAMES T. KEY-ES, a citif New York, have invented new and useful Improvements in Tools for Handling Small Steel and Iron Articles, of which the following is a specification.y
The object of my invention is more particularly to provide a tool for picking up and handling small spherical objects as the steel balls of bicycle wheel ball bearings which are very difficult to handle by the fingers, but which tool will also be very useful for handling various other small objects of steel and iron, and it consists essentially of a magnetized bar or core adapted for picking up and holdin-g said articles by attraction, and a nonmaguetic discharger for detaching the articles when they are to be released, all as hereinafter fully described reference being made to the accompanying drawings in which- Figures l and 2, are sectional elevations of one form of my improved tool, Fig. l shewing the conditions for picking up and holding the bail, and Fig. showing the position' for releasing the ball. Figs. 3 and l, are sectional elevations of another form'of the said tool, Fig, 3, showing the conditions for holding the ball, and Fig. l showing the conditions for releasing it. Figs. 5 and 6 are like views of an-other form of. the tool and showing the different positions. Fig. 7, is a side elevation of the form of the tool represented in Figs. 5 and G, and Figs. S and 0, are sectional elevations of another form, Fig. S showing the conditions for holding the ball, and Fig. 9 the conditions for releasing it.
However the tool is constructed the essential features of it are a magnetic bar or core for lifting the objects by attraction, and a non-magnetic discharger for detaching them which are readily movable relatively to each other to permit the magnet to be presented in suitable proximity to the articles for taking them up by attraction, and for removing the articles out of the field of magnetic attraction for releasing them. In Figs. 1 and 2,(trepresents a magnetized 5o core of the tool having a central longitudinal bore I), and vbeing inclosed in a tubular stock or handle c, of non-magnetic substance having a head d, at one end znd being closed with a non-magnetic plug e, at the other end to secure the core; f, is a piece of soft iron tted to slide in and out of a socket g, in the plugged end of the stock; h, is a rod extending up through the core a, and the head of the stock and havinga head i, above by which to pull the piece of soft iron inward of the socket, andy' is a coiled spring applied to the rod h, between the shoulder k thereof, and a shoulder Z, of the head of the stock suitable for projecting the soft iron piece f, outward of the socket. of the tool the soft iron piece is drawn upward into the socket as in Fig. l through lift- In the operation of this form ing it by the head ot' rod 7L, in which position it is temporarily magnetized by the magnetic core a, and will pick up small steel or iron objects as balls m, and hold them fornse, and when the head t', is released and the rod let go the soft iron piece f, being projected by the spring outward from the socket g beyond the magnetic inlluence of .the core @,Will release and eiiect the discharge of the objects holding it.
ln Figs. and the magnetic core Ct is an ranged to slide in the stock c so that the end- I oruse in picking up the objects maybelush with the end of the stock for taking eiect, as in Fig. 3, and may be withdrawn .a suitable distance within the end ot' the stock as in Fig. 4 for releasing the balls. rlhe lifting head 't' and the spring j are in this case applied to the magnetic core, said core having the shoulders 7c for the spring, the other shoulder for said spring being on the head d of the stock same as in Figs. l and 2. The other end of the stock and the corresponding end of the core are tapered a little to limit the outward thrust ofthe core by the spring,but any other approved means of effecting such limitation may be employed. In this form of the tool the core is pressed downward bythe spring to the position for effective use as in Fig. 3, and it is lifted up by the head as in Fig. 4, for the release of -thepobjects being handled, by withdrawal of the end so far within the case that the objects, prevented from following it by the end of the stock, will be relieved of the magnetic influence.
made fast to the stock c, by the studs n, with an intermediate sliding tube o, having slots p, for the studs and containing aspringj' above theA upper end of the core 'tending to shift it upward, also having the upper end q extending above the stock a suitable distance to serve for pressing the tube downward by the finger, and also having the lower end in snitable rela'tion to the operative end of the mag-l v net for allowing it to take effect when raised by the spring on the objects to* be handled, and for discharging them when pressed down.
In Figs. 8 and 9, the stock c', core a and sprin g j, are substantially the same as in Figs. 3 and 4, with a stud s, projecting through a slot t, in the side of the stock for raising the magnet for discharging the objects held by it.
It is manifest that besides these various forms of the tool other equivalent forms may be made.
I claim- 1. The combination of the magneticbar or core and the non-magnetic discharger movable relatively to each other for permitting the core to be presented to the objects to be vmanned, ne for demhingsaid objects by the dscharger snbstantiallyas described.
' 2. The combination of the magnetic bar or core, the non-magnetic dscharger and a stock 3o or handle, said core and discharger movable relatively to each other for presenting the core to the objects to be handled,y and for detaching said objects by the discbarger substantially as described.
3'. The combination of the magnetic bar or core, the nommagnetic discharger movable relativelyv to 'each other for presenting the core to the objects to be handled, and-for detaching the said objects by the discharger, a spring for effecting the movement in one direction and a push-piece for ee'cting reverse movement substantially as described.
In testimony that I claim the foregoing as my invention I have signed my name, in presence of two witnesses, this 8th day of April,
JAMES 'F.KEYES. Witnessesz W. J. MORGAN, C. E. WHITNEY.
US512381D James t Expired - Lifetime US512381A (en)

Publications (1)

Publication Number Publication Date
US512381A true US512381A (en) 1894-01-09

Family

ID=2581202

Family Applications (1)

Application Number Title Priority Date Filing Date
US512381D Expired - Lifetime US512381A (en) James t

Country Status (1)

Country Link
US (1) US512381A (en)

Cited By (60)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2417762A (en) * 1944-04-14 1947-03-18 Koller Steven Tool for magnetic lifting
US2428864A (en) * 1945-07-05 1947-10-14 Charles R Boyd Magnet
US2431320A (en) * 1944-08-02 1947-11-25 Standard Knapp Corp Tray unloader
US2436740A (en) * 1943-09-21 1948-02-24 Lisle Corp Filter magnet structure
US2471764A (en) * 1946-01-31 1949-05-31 Carl H Miller Magnetic hand pickup tool
US2477270A (en) * 1945-09-18 1949-07-26 Coy J Smith Bearing replacer tool
US2480366A (en) * 1946-01-16 1949-08-30 Ivan N Hewitt Valve stem pushing implement
US2508075A (en) * 1949-09-10 1950-05-16 Morris Owen Magnetized article
US2523351A (en) * 1946-02-18 1950-09-26 Gunnar O Bedoar Plumb bob with magnetic point
US2528709A (en) * 1949-12-06 1950-11-07 Raymond Engineering Lab Inc Eraser
US2547990A (en) * 1945-11-21 1951-04-10 Frank F Willms Magnetic pickup
US2580571A (en) * 1949-06-07 1952-01-01 American Viscose Corp Doffing arrangement for spinning buckets
US2599966A (en) * 1950-06-02 1952-06-10 Zachary Alexis Magnetic extractor
US2605658A (en) * 1949-05-02 1952-08-05 Marcial M Sanchez Magnetic tool
US2615746A (en) * 1944-06-03 1952-10-28 Emhart Mfg Co Crate unloader
US2624223A (en) * 1949-11-05 1953-01-06 Wade Stevenson Magnetic driving implement
US2630036A (en) * 1948-09-16 1953-03-03 Ray M Brown Magnetic fastener-holding device
US2632790A (en) * 1949-03-03 1953-03-24 Hugh A Kiler Magnetic hairpin holder
US2637590A (en) * 1950-03-08 1953-05-05 Standard Oil Dev Co Well bore retrieving tool
US2652733A (en) * 1950-08-23 1953-09-22 Carter Carburetor Corp Ball plug setting tool
US2656211A (en) * 1950-11-30 1953-10-20 Zachary Alexis Magnetic instrument for lifting hairpins
US2660468A (en) * 1949-07-28 1953-11-24 Cook Herbert Deep well fishing tool
US2667394A (en) * 1950-04-01 1954-01-26 Dorothy N Goetz Dispenser for articles of magnetic material
US2671369A (en) * 1950-08-01 1954-03-09 Wade Stevenson Magnetic socket wrench
US2677294A (en) * 1950-11-25 1954-05-04 Wade Stevenson Magnetic driving implement
US2678578A (en) * 1951-08-30 1954-05-18 Joseph L Bonanno Magnetizable hand tool
US2690617A (en) * 1951-09-15 1954-10-05 James B Giern Needle holding dental tool
US2693979A (en) * 1950-08-03 1954-11-09 George L Russell Magnetic device
DE929300C (en) * 1948-10-02 1955-06-23 Deutsche Edelstahlwerke Ag Magnetic gripper
US2723369A (en) * 1955-06-08 1955-11-08 Henry T Brummett Wall stud locator
US2767517A (en) * 1953-08-18 1956-10-23 R W Curry Magnetic assembly toy
US2790420A (en) * 1953-01-21 1957-04-30 Zelinger Henry Magnetic pencils
DE967514C (en) * 1951-01-19 1957-11-14 Deutsche Edelstahlwerke Ag Permanent magnetic gripping tool
US2828762A (en) * 1955-06-27 1958-04-01 Erie Meter Systems Inc Pit box access cover and tool for removing same
US2945407A (en) * 1959-09-23 1960-07-19 Emilio A Beltrani Shielded wire dielectric ejector
DE974187C (en) * 1950-06-30 1960-10-13 Max Baermann Device for sorting or transporting magnetic materials
US2970002A (en) * 1959-01-20 1961-01-31 Laviano Samuel Magnetic pickup
US2997918A (en) * 1959-08-20 1961-08-29 Leonard I Spear Contact lens holder
US3042030A (en) * 1958-11-25 1962-07-03 Read Thane Spherical type insert plug for body passageway and tool therefor
US3080078A (en) * 1958-03-03 1963-03-05 American Can Co Method of and apparatus for dispensing hot foods
US3138855A (en) * 1959-10-22 1964-06-30 Calvert D Marshall Tool for removing keys on poppet valves
US3257893A (en) * 1961-05-01 1966-06-28 Hirsch Abraham Adler Self-luminous turbidity observation device for water works basins
US3951014A (en) * 1974-11-21 1976-04-20 General Time Corporation Magnetic reset tool
US3975813A (en) * 1975-11-12 1976-08-24 Bell William A Magnetic tile holder
US4125264A (en) * 1977-07-25 1978-11-14 Theodore Reiss Record positioning device
US4649116A (en) * 1983-10-27 1987-03-10 Institut Pasteur Magnetic means for withdrawing magnetic gel beads from an assay fluid
US5169193A (en) * 1991-12-09 1992-12-08 Stelmach John J Magnetic pickup tool
US5265887A (en) * 1991-12-09 1993-11-30 Stelmach John J Magnetic pickup tool
US5471186A (en) * 1992-10-20 1995-11-28 Goldstar Electron Co., Ltd. Magnetic pencil for moving semiconductor packages
US6026717A (en) * 1998-07-23 2000-02-22 Anderson; Wayne Driver tool with high energy magnetizer/demagnetizer on tool handle
US6026718A (en) * 1998-09-28 2000-02-22 Anderson; Wayne High energy magnetizer and selective demagnetizer integral with driver tool or the like
US6032557A (en) * 1998-09-01 2000-03-07 Anderson; Wayne Driver tool kit with high energy magnetizer/demagnetizer on tool handle(s)
US6056339A (en) * 1999-01-14 2000-05-02 Berger; Leon M. Magnetic retrieving device
US6060801A (en) * 1998-09-28 2000-05-09 Anderson; Wayne High energy magnetizer/demagnetizer for drill housing
DE19842699C2 (en) * 1998-09-18 2002-02-07 Michael Splitgerber Pocket-sized board game
US6403038B1 (en) * 1997-07-16 2002-06-11 Klaus-Hinrich Heermann Magnetic pin for concentrating and separating particles
US20040176797A1 (en) * 2003-03-04 2004-09-09 Nmt Medical, Inc. Magnetic attachment systems
CN102380767A (en) * 2011-09-28 2012-03-21 迈凯实金属技术(苏州)有限公司 Pin assembling tool
US20130057003A1 (en) * 2011-09-01 2013-03-07 Benjamin J. Watson Magnetic lifting tool
CN111195867A (en) * 2018-11-16 2020-05-26 昆山联滔电子有限公司 Magnetic pen

Cited By (61)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2436740A (en) * 1943-09-21 1948-02-24 Lisle Corp Filter magnet structure
US2417762A (en) * 1944-04-14 1947-03-18 Koller Steven Tool for magnetic lifting
US2615746A (en) * 1944-06-03 1952-10-28 Emhart Mfg Co Crate unloader
US2431320A (en) * 1944-08-02 1947-11-25 Standard Knapp Corp Tray unloader
US2428864A (en) * 1945-07-05 1947-10-14 Charles R Boyd Magnet
US2477270A (en) * 1945-09-18 1949-07-26 Coy J Smith Bearing replacer tool
US2547990A (en) * 1945-11-21 1951-04-10 Frank F Willms Magnetic pickup
US2480366A (en) * 1946-01-16 1949-08-30 Ivan N Hewitt Valve stem pushing implement
US2471764A (en) * 1946-01-31 1949-05-31 Carl H Miller Magnetic hand pickup tool
US2523351A (en) * 1946-02-18 1950-09-26 Gunnar O Bedoar Plumb bob with magnetic point
US2630036A (en) * 1948-09-16 1953-03-03 Ray M Brown Magnetic fastener-holding device
DE929300C (en) * 1948-10-02 1955-06-23 Deutsche Edelstahlwerke Ag Magnetic gripper
US2632790A (en) * 1949-03-03 1953-03-24 Hugh A Kiler Magnetic hairpin holder
US2605658A (en) * 1949-05-02 1952-08-05 Marcial M Sanchez Magnetic tool
US2580571A (en) * 1949-06-07 1952-01-01 American Viscose Corp Doffing arrangement for spinning buckets
US2660468A (en) * 1949-07-28 1953-11-24 Cook Herbert Deep well fishing tool
US2508075A (en) * 1949-09-10 1950-05-16 Morris Owen Magnetized article
US2624223A (en) * 1949-11-05 1953-01-06 Wade Stevenson Magnetic driving implement
US2528709A (en) * 1949-12-06 1950-11-07 Raymond Engineering Lab Inc Eraser
US2637590A (en) * 1950-03-08 1953-05-05 Standard Oil Dev Co Well bore retrieving tool
US2667394A (en) * 1950-04-01 1954-01-26 Dorothy N Goetz Dispenser for articles of magnetic material
US2599966A (en) * 1950-06-02 1952-06-10 Zachary Alexis Magnetic extractor
DE974187C (en) * 1950-06-30 1960-10-13 Max Baermann Device for sorting or transporting magnetic materials
US2671369A (en) * 1950-08-01 1954-03-09 Wade Stevenson Magnetic socket wrench
US2693979A (en) * 1950-08-03 1954-11-09 George L Russell Magnetic device
US2652733A (en) * 1950-08-23 1953-09-22 Carter Carburetor Corp Ball plug setting tool
US2677294A (en) * 1950-11-25 1954-05-04 Wade Stevenson Magnetic driving implement
US2656211A (en) * 1950-11-30 1953-10-20 Zachary Alexis Magnetic instrument for lifting hairpins
DE967514C (en) * 1951-01-19 1957-11-14 Deutsche Edelstahlwerke Ag Permanent magnetic gripping tool
US2678578A (en) * 1951-08-30 1954-05-18 Joseph L Bonanno Magnetizable hand tool
US2690617A (en) * 1951-09-15 1954-10-05 James B Giern Needle holding dental tool
US2790420A (en) * 1953-01-21 1957-04-30 Zelinger Henry Magnetic pencils
US2767517A (en) * 1953-08-18 1956-10-23 R W Curry Magnetic assembly toy
US2723369A (en) * 1955-06-08 1955-11-08 Henry T Brummett Wall stud locator
US2828762A (en) * 1955-06-27 1958-04-01 Erie Meter Systems Inc Pit box access cover and tool for removing same
US3080078A (en) * 1958-03-03 1963-03-05 American Can Co Method of and apparatus for dispensing hot foods
US3042030A (en) * 1958-11-25 1962-07-03 Read Thane Spherical type insert plug for body passageway and tool therefor
US2970002A (en) * 1959-01-20 1961-01-31 Laviano Samuel Magnetic pickup
US2997918A (en) * 1959-08-20 1961-08-29 Leonard I Spear Contact lens holder
US2945407A (en) * 1959-09-23 1960-07-19 Emilio A Beltrani Shielded wire dielectric ejector
US3138855A (en) * 1959-10-22 1964-06-30 Calvert D Marshall Tool for removing keys on poppet valves
US3257893A (en) * 1961-05-01 1966-06-28 Hirsch Abraham Adler Self-luminous turbidity observation device for water works basins
US3951014A (en) * 1974-11-21 1976-04-20 General Time Corporation Magnetic reset tool
US3975813A (en) * 1975-11-12 1976-08-24 Bell William A Magnetic tile holder
US4125264A (en) * 1977-07-25 1978-11-14 Theodore Reiss Record positioning device
US4649116A (en) * 1983-10-27 1987-03-10 Institut Pasteur Magnetic means for withdrawing magnetic gel beads from an assay fluid
US5265887A (en) * 1991-12-09 1993-11-30 Stelmach John J Magnetic pickup tool
US5169193A (en) * 1991-12-09 1992-12-08 Stelmach John J Magnetic pickup tool
US5471186A (en) * 1992-10-20 1995-11-28 Goldstar Electron Co., Ltd. Magnetic pencil for moving semiconductor packages
US6403038B1 (en) * 1997-07-16 2002-06-11 Klaus-Hinrich Heermann Magnetic pin for concentrating and separating particles
US6026717A (en) * 1998-07-23 2000-02-22 Anderson; Wayne Driver tool with high energy magnetizer/demagnetizer on tool handle
US6032557A (en) * 1998-09-01 2000-03-07 Anderson; Wayne Driver tool kit with high energy magnetizer/demagnetizer on tool handle(s)
DE19842699C2 (en) * 1998-09-18 2002-02-07 Michael Splitgerber Pocket-sized board game
US6060801A (en) * 1998-09-28 2000-05-09 Anderson; Wayne High energy magnetizer/demagnetizer for drill housing
US6026718A (en) * 1998-09-28 2000-02-22 Anderson; Wayne High energy magnetizer and selective demagnetizer integral with driver tool or the like
US6056339A (en) * 1999-01-14 2000-05-02 Berger; Leon M. Magnetic retrieving device
US20040176797A1 (en) * 2003-03-04 2004-09-09 Nmt Medical, Inc. Magnetic attachment systems
US7618435B2 (en) * 2003-03-04 2009-11-17 Nmt Medical, Inc. Magnetic attachment systems
US20130057003A1 (en) * 2011-09-01 2013-03-07 Benjamin J. Watson Magnetic lifting tool
CN102380767A (en) * 2011-09-28 2012-03-21 迈凯实金属技术(苏州)有限公司 Pin assembling tool
CN111195867A (en) * 2018-11-16 2020-05-26 昆山联滔电子有限公司 Magnetic pen

Similar Documents

Publication Publication Date Title
US512381A (en) James t
US2471764A (en) Magnetic hand pickup tool
US700412A (en) Clutch.
US2547990A (en) Magnetic pickup
US437647A (en) Rhodolph h
US1709240A (en) Nail puller
US733126A (en) Tool-holder.
US239403A (en) Feedeeick m
US1295785A (en) Punch.
US374743A (en) jones
US889474A (en) Cork-extractor.
US736964A (en) Cannon-pinion remover.
US1109942A (en) Watchmaker's tool.
US686137A (en) Solenoid graduating-tube.
US741816A (en) Fire-tongs.
US482232A (en) Watchmaker s tweezers
US697120A (en) Jeweler's tool.
US1416543A (en) Landing net
US307410A (en) powee
US510467A (en) Magnetic nail-driver
US376196A (en) Joseph hoffman
US444148A (en) Lead or crayon holder
US1026509A (en) Toll for extracting well-points.
US875078A (en) Goods-handler.
US587677A (en) Bit-tongs