CA1042526A - Electrical grounding clamp integrally mounted on a pipe section - Google Patents
Electrical grounding clamp integrally mounted on a pipe sectionInfo
- Publication number
- CA1042526A CA1042526A CA252,975A CA252975A CA1042526A CA 1042526 A CA1042526 A CA 1042526A CA 252975 A CA252975 A CA 252975A CA 1042526 A CA1042526 A CA 1042526A
- Authority
- CA
- Canada
- Prior art keywords
- casing
- ground wire
- pipe section
- ground
- pipe
- 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
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
- H01R4/58—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation characterised by the form or material of the contacting members
- H01R4/64—Connections between or with conductive parts having primarily a non-electric function, e.g. frame, casing, rail
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
- H01R4/28—Clamped connections, spring connections
- H01R4/30—Clamped connections, spring connections utilising a screw or nut clamping member
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
- H01R4/58—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation characterised by the form or material of the contacting members
- H01R4/60—Connections between or with tubular conductors
Abstract
Abstract An improved means for grounding the electrical service in a building or for grounding motors and the like consisting of an electrical ground fixture comprising a metal pipe section and a securing means for a ground wire integrally associated with the metal pipe section. The securing means comprises a metal casing adapted to receive the ground wire, the casing being integrally connected with and positioned exteriorly on the pipe section. A
clamp, operatively associated with the casing and movable with respect thereto is adapted to secure the ground wire in the cas-ing. When the ground wire is secured, a ground path is provided between the wire and the casing and metal pipe section. The pipe section is incorporated into an appropriate part of the water sys-tem of the building. Difficulties of installation, corrosion pro-blems and crimping of the pipe occurring with previously used screw-secured plate members fitted about a pipe are avoided according to the present invention.
clamp, operatively associated with the casing and movable with respect thereto is adapted to secure the ground wire in the cas-ing. When the ground wire is secured, a ground path is provided between the wire and the casing and metal pipe section. The pipe section is incorporated into an appropriate part of the water sys-tem of the building. Difficulties of installation, corrosion pro-blems and crimping of the pipe occurring with previously used screw-secured plate members fitted about a pipe are avoided according to the present invention.
Description
B _ ground of the Invention This invention relates generally to an electrical ground fixture and more particularly concerns a combined pipe and secur-ing means for an electric ground wire of a house or other building.
One present method of grounding the electrical service and equipment in a building in the city is by attaching a wire from the neutral bar and box case to the supply water pipe (copper) ahead of the meter, by means of a ground clamp. The standard ground clamp now in use consists of a pair of plate members form-10 ed to fit about a pipe and secured thereon by two screws, one on either side of the plate. A third screw secures the ground wire in position on one of the plate members. Canadian Patent No. 528,644 of Cutler et al., issued August 7, 1956 illustrates a type of such clamp. Not only does such a clamp require a mini-mum of three screws to provide the necessary electrical connection, but also, after several years, rust and corrosion are inevitable, -~; the clamp being made of iron or some other such sturdy metal so that galvanic action is set up, thus causing a potential obstacle to the ground path between the ground wire and the supply pipe.
Moreover, a strong electrician mounting such a clamp may be ableto crimp and distort the copper pipe.
In the country, where water is supplied from a well, in addition to the ground wire being thus clamped to the water pipe, two ground rods are driven into the earth.
Canadian Patents Nos. 778,512 of Sodderland et al., issued February 13, 1968; 934,458 of Sotolongo, issued September 25, 1973 and 968,431 of Thompson et al., issued May 27, 1975 des-cribe and illustrate other types of ground connectors or clamps which wrap about or straddle a pipe or conduit and to which a . ~
ground wire is connected. These references are of general back-ground interest with respect to the present invention. Similarly, background references are the electrical conn~ctors and clamps . ~ . . ' . ' ~ :` ' descrLbed and illustrated in Canadian Patents Nos. 403,092 of Mebold, issued February 24, 1942; 451,442 of Bakke, issued September 28, 1948 and 726,298 of Wolf, issued January 18, 1966.
Each describes a separate clamping device used to connect together one or more electrical conductors and designed to operate as a separate unit or to be mounted to a panel board (as in the case of Wolf).
It is an object of the present invention to provide a simple, effective means of securing a ground wire from the elec-trical service of a building to a supply water pipe or other con-duit, or to secure a ground wire between a conduit and, for ex-ample, a vibrating machine. It is a further object of the present invention to provide an acceptable alternative to the two plate, three-screw ground clamp for securing a ground wire to a water pipe or conduit which will not crimp or distort portions of the pipe, which will be simpler to install and operate, and which may avoid problems of corrosion heretofore prevalent with such clamps.
~ Summary of the Invention i~ In accordance with the present invention, an improved means for grounding the electrical service in a building or for grounding motors and the like is provided which consists of an .~ .
~f electrical ground fixture comprising a metal pipe section and a .3 securing means for a ground wire associated with the metal pipe section. The securing means comprises a metal casing adapted to receive the ground wire, the casing being integrally connected ~, with and positioned exteriorly on the pipe section. A clamp, operatively associated with the casing and movable with respect thereto, is adapted to secure the ground wire in the casing. In this way, when the ground wire is secured, a ground path is pro-vided between the wire and the casing and metal pipe section.
, The pipe section can be incorporated into an appropriate part of the water system of a building, and a ground wire is simply clamp-
One present method of grounding the electrical service and equipment in a building in the city is by attaching a wire from the neutral bar and box case to the supply water pipe (copper) ahead of the meter, by means of a ground clamp. The standard ground clamp now in use consists of a pair of plate members form-10 ed to fit about a pipe and secured thereon by two screws, one on either side of the plate. A third screw secures the ground wire in position on one of the plate members. Canadian Patent No. 528,644 of Cutler et al., issued August 7, 1956 illustrates a type of such clamp. Not only does such a clamp require a mini-mum of three screws to provide the necessary electrical connection, but also, after several years, rust and corrosion are inevitable, -~; the clamp being made of iron or some other such sturdy metal so that galvanic action is set up, thus causing a potential obstacle to the ground path between the ground wire and the supply pipe.
Moreover, a strong electrician mounting such a clamp may be ableto crimp and distort the copper pipe.
In the country, where water is supplied from a well, in addition to the ground wire being thus clamped to the water pipe, two ground rods are driven into the earth.
Canadian Patents Nos. 778,512 of Sodderland et al., issued February 13, 1968; 934,458 of Sotolongo, issued September 25, 1973 and 968,431 of Thompson et al., issued May 27, 1975 des-cribe and illustrate other types of ground connectors or clamps which wrap about or straddle a pipe or conduit and to which a . ~
ground wire is connected. These references are of general back-ground interest with respect to the present invention. Similarly, background references are the electrical conn~ctors and clamps . ~ . . ' . ' ~ :` ' descrLbed and illustrated in Canadian Patents Nos. 403,092 of Mebold, issued February 24, 1942; 451,442 of Bakke, issued September 28, 1948 and 726,298 of Wolf, issued January 18, 1966.
Each describes a separate clamping device used to connect together one or more electrical conductors and designed to operate as a separate unit or to be mounted to a panel board (as in the case of Wolf).
It is an object of the present invention to provide a simple, effective means of securing a ground wire from the elec-trical service of a building to a supply water pipe or other con-duit, or to secure a ground wire between a conduit and, for ex-ample, a vibrating machine. It is a further object of the present invention to provide an acceptable alternative to the two plate, three-screw ground clamp for securing a ground wire to a water pipe or conduit which will not crimp or distort portions of the pipe, which will be simpler to install and operate, and which may avoid problems of corrosion heretofore prevalent with such clamps.
~ Summary of the Invention i~ In accordance with the present invention, an improved means for grounding the electrical service in a building or for grounding motors and the like is provided which consists of an .~ .
~f electrical ground fixture comprising a metal pipe section and a .3 securing means for a ground wire associated with the metal pipe section. The securing means comprises a metal casing adapted to receive the ground wire, the casing being integrally connected ~, with and positioned exteriorly on the pipe section. A clamp, operatively associated with the casing and movable with respect thereto, is adapted to secure the ground wire in the casing. In this way, when the ground wire is secured, a ground path is pro-vided between the wire and the casing and metal pipe section.
, The pipe section can be incorporated into an appropriate part of the water system of a building, and a ground wire is simply clamp-
- 2 -:; '' , ~, : . ,~.
:: :
~04;~5Z6 ed in the metal casing to provide a sultable ground for the build-ings electrical system.
- The clamp means may be a screw movably held in a threaded hole in the casing, with a clamping plate rotatably attach-ed to the screw's lower end inside the casing. The plate may be provided with transverse ridges on its operative side to assist in gripping the ground wire and preventing unintentional dislodging - of the ground wire from secured position within the casing. The profile of the inside of the casing, (for example its base), may be such to assist in the gripping of the ground wire between the clamp plate and the inside of the casing. ` --The ground fixture is preferably made of one solid piece (no solder) of copper or brass. In the city it may be fitted into a building's water piping at the entrance point, ahead of the ~ -shut-off valve and water meter, where hydro electrical codes re- ~ -~
quire. In the country, it would be fitted into the water piping -. : - .
near the pressure pump or some suitable location.
~ Where the clamp consists of a screw and clamp plate, -,~ since only one screw is depended upon to provide the tight elec-. 20 trical contact within the casing, a much superior means of secur- ~
ing the ground wire to the pipe system of a building is provided ~-Z over the two-plate, three-screw clamp presently commonly used.
'~ Moreover, where the device is made of copper or brass and soldered or otherwise fitted into the piping system, rust or corrosion are minimized. Also, with the device according to the present inven-tion, there i9 little or no danger of crimping the pipe.
? Where acceptable according to electrical codes or practice, the metal pipe section may be (or may be part of) the main water valve for the building or even the water meter.
`; 30 In the case Gf a motor or vibrating machinery, where a --?
flexible ground connection is required and the machinery is ground-. .
:: .
, ; .
104~:SZ6 ed to a pipe or conduit, again the electrical ground fixture of the present inventLon may be incorporated into the conduit and a jumper wire is run between the clamp of the ground fixture and a connection on the motor or machinery. An appropriate metal pipe section, whether it be a short, coupling section or a long section of pipe (e.g. for the supply water lines from the street main to the building) may be extruded together with an appropriate casing to form a single, integral electrical ground fixture in accordance with the invention. Of course where aluminum, galva-nized iron or other pipes or conduits are used, the electrical ground fixture may be made entirely from such metals in accor-dance with the present invention.
Brief Description of the Drawings , Other objects and advantages of the present invention will become apparent upon reading the following detailed descrip-`i tion and upon referring to the drawings in which:
- Figure 1 is a perspective view of an example embodiment of ~
an electrical ground fixture in accordance with the present inven- ; -tion;
Figure 2 is a partial section view of an electrical ground . fixture along lines II-II of Figure l;
Figure 3 is a schematic view of a portion of a building's ` water and electrical system in which an electrical ground fixture according to the present invention has been incorporated;
Figure 4 is a perspective view of a further embodiment of electrical ground fixture according to the present invention.
In the drawings, similar features are represented by similar reference numerals.
While the present invention will be described in con-nection with example embodiments, it will be understood that it is not intended to limit the invention to those embodiments. On the contrary, it is intended to cover all alternatives, modifica-:
-., . . .
.
, ' ' ~
:
1~)4;~526 tions and equivalents as may be included within the spirit and scope of the invention as defined by the appended claims.
Detailed Description of the Invention Turning now to the drawings, in the example embodiment illustrated in Figures l and 2, integral with pipe section 2 is securing means 4 comprising a casing 6. At each end of casing 6 is an aperture 8 through which ground wire 10 enters the casing to be secured therein. Screw 12, illustrated to be slot-headed, is threadably engaged in a hole in the upper portion of casing 6. ~ -Clamping plate 14 is rotatably attached to the lower end of screw 12 inside the casing. As can be seen in Figure 2, when screw 12 ~-is turned in the proper direction, clamping plate 14 is lowered to bear against the end of ground wire 10 and secure it tightly between the lower face of the clamping plate and the spaced por- -tion of casing 6. This lower face of clamping plate 14 may be provided with transverse ridges or the like to assist in the en-gagement with the end of ground wire 10. Also, as can be seen 5;
in Figure 1, the inner surface of base portion 18 of casing 6 has -a "wide-V" shaped profile in a transverse direction to assist in securing ground wire 10 in place within the casing.
While metal pipe section 2 may be of any suitable length ~ for securing in a proper place in the water system of a building, q it may be preferred that it be towards the building end of a length of delivery pipe for delivering water from a well or city main to a building so that no soldered connections exist between the ground wire securing means and the ground outside the build-ing. This may be required in some electric codes. Such a set-up is illustrated in Figure 3 where securing means 4 is located to-wards the inner end of water delivery pipe 20, which is a length ' 30 of water pipe running directly from city service mains to the in-side of building wall 22. Main water valve 24 and meter 26 are located further along the water system in the house. While not : ' ' .
~04;252~
illustrated, it is within the scope of the present invention to have securing means 4 integrally connected to a suitable portion of main valve 24 or meter 26 where electrical codes would permit.
A further alternative embodiment of the invention, not illustrated, would include a pair of hexagonal-headed screws threaded through the outer wall of an elongated casing, each screw - having a clamping plate 14, similar to that of Figures 1 and 2, rotatably attached to its lower end. Such a securing means will provide, where required, greater securing strength. Alternative-ly, as shown in Figure 4 the metal casing may be in the form of a split bolt 23 integrally secured to pipe 2. Clamping of the wire - in position within the casing is achieved by means of clamping .~ plate 24 slidably positioned and secured between the arms 26 of ~-~
split bolt 22 by means of nut 28.
~, It will be understood that the words"pipe section"
as used throughout this specification includes a standard coupling ;, which is usually used to join two lengths of pipe together or a .J length of pipe itself. Alternatively, "pipe section", within the ¦ meaning intended in this specification, may be a threaded coupling, ~, 20 male or female connector, a short nipple of threaded pipe or any ~ plumbing or electrical pipe fitting or device of copper, brass, ``I aluminum, steel, galvanized iron or any other metal used in these ~'. trades and suitable to the particular application intended.
~ Thus it is apparent that there has been provided, in 4 accordance with the present invention, an electrical ground fix-~, ture that fully satisfies the ob~ects, aims and advantages as set ;, forth above. While the invention has been described in con~unc-tion with specific embodiments thereof, it is evident that many alternatives, modifications and variations will be apparent to `
those s~illed in the art in light of the foregoing description.
Accordingly, it is intended to embrace all such alternatives, :, -, modifications and variations as fall within the spirit and broad scope of the appended claims.
,; ~ ' ' ' `~
:: :
~04;~5Z6 ed in the metal casing to provide a sultable ground for the build-ings electrical system.
- The clamp means may be a screw movably held in a threaded hole in the casing, with a clamping plate rotatably attach-ed to the screw's lower end inside the casing. The plate may be provided with transverse ridges on its operative side to assist in gripping the ground wire and preventing unintentional dislodging - of the ground wire from secured position within the casing. The profile of the inside of the casing, (for example its base), may be such to assist in the gripping of the ground wire between the clamp plate and the inside of the casing. ` --The ground fixture is preferably made of one solid piece (no solder) of copper or brass. In the city it may be fitted into a building's water piping at the entrance point, ahead of the ~ -shut-off valve and water meter, where hydro electrical codes re- ~ -~
quire. In the country, it would be fitted into the water piping -. : - .
near the pressure pump or some suitable location.
~ Where the clamp consists of a screw and clamp plate, -,~ since only one screw is depended upon to provide the tight elec-. 20 trical contact within the casing, a much superior means of secur- ~
ing the ground wire to the pipe system of a building is provided ~-Z over the two-plate, three-screw clamp presently commonly used.
'~ Moreover, where the device is made of copper or brass and soldered or otherwise fitted into the piping system, rust or corrosion are minimized. Also, with the device according to the present inven-tion, there i9 little or no danger of crimping the pipe.
? Where acceptable according to electrical codes or practice, the metal pipe section may be (or may be part of) the main water valve for the building or even the water meter.
`; 30 In the case Gf a motor or vibrating machinery, where a --?
flexible ground connection is required and the machinery is ground-. .
:: .
, ; .
104~:SZ6 ed to a pipe or conduit, again the electrical ground fixture of the present inventLon may be incorporated into the conduit and a jumper wire is run between the clamp of the ground fixture and a connection on the motor or machinery. An appropriate metal pipe section, whether it be a short, coupling section or a long section of pipe (e.g. for the supply water lines from the street main to the building) may be extruded together with an appropriate casing to form a single, integral electrical ground fixture in accordance with the invention. Of course where aluminum, galva-nized iron or other pipes or conduits are used, the electrical ground fixture may be made entirely from such metals in accor-dance with the present invention.
Brief Description of the Drawings , Other objects and advantages of the present invention will become apparent upon reading the following detailed descrip-`i tion and upon referring to the drawings in which:
- Figure 1 is a perspective view of an example embodiment of ~
an electrical ground fixture in accordance with the present inven- ; -tion;
Figure 2 is a partial section view of an electrical ground . fixture along lines II-II of Figure l;
Figure 3 is a schematic view of a portion of a building's ` water and electrical system in which an electrical ground fixture according to the present invention has been incorporated;
Figure 4 is a perspective view of a further embodiment of electrical ground fixture according to the present invention.
In the drawings, similar features are represented by similar reference numerals.
While the present invention will be described in con-nection with example embodiments, it will be understood that it is not intended to limit the invention to those embodiments. On the contrary, it is intended to cover all alternatives, modifica-:
-., . . .
.
, ' ' ~
:
1~)4;~526 tions and equivalents as may be included within the spirit and scope of the invention as defined by the appended claims.
Detailed Description of the Invention Turning now to the drawings, in the example embodiment illustrated in Figures l and 2, integral with pipe section 2 is securing means 4 comprising a casing 6. At each end of casing 6 is an aperture 8 through which ground wire 10 enters the casing to be secured therein. Screw 12, illustrated to be slot-headed, is threadably engaged in a hole in the upper portion of casing 6. ~ -Clamping plate 14 is rotatably attached to the lower end of screw 12 inside the casing. As can be seen in Figure 2, when screw 12 ~-is turned in the proper direction, clamping plate 14 is lowered to bear against the end of ground wire 10 and secure it tightly between the lower face of the clamping plate and the spaced por- -tion of casing 6. This lower face of clamping plate 14 may be provided with transverse ridges or the like to assist in the en-gagement with the end of ground wire 10. Also, as can be seen 5;
in Figure 1, the inner surface of base portion 18 of casing 6 has -a "wide-V" shaped profile in a transverse direction to assist in securing ground wire 10 in place within the casing.
While metal pipe section 2 may be of any suitable length ~ for securing in a proper place in the water system of a building, q it may be preferred that it be towards the building end of a length of delivery pipe for delivering water from a well or city main to a building so that no soldered connections exist between the ground wire securing means and the ground outside the build-ing. This may be required in some electric codes. Such a set-up is illustrated in Figure 3 where securing means 4 is located to-wards the inner end of water delivery pipe 20, which is a length ' 30 of water pipe running directly from city service mains to the in-side of building wall 22. Main water valve 24 and meter 26 are located further along the water system in the house. While not : ' ' .
~04;252~
illustrated, it is within the scope of the present invention to have securing means 4 integrally connected to a suitable portion of main valve 24 or meter 26 where electrical codes would permit.
A further alternative embodiment of the invention, not illustrated, would include a pair of hexagonal-headed screws threaded through the outer wall of an elongated casing, each screw - having a clamping plate 14, similar to that of Figures 1 and 2, rotatably attached to its lower end. Such a securing means will provide, where required, greater securing strength. Alternative-ly, as shown in Figure 4 the metal casing may be in the form of a split bolt 23 integrally secured to pipe 2. Clamping of the wire - in position within the casing is achieved by means of clamping .~ plate 24 slidably positioned and secured between the arms 26 of ~-~
split bolt 22 by means of nut 28.
~, It will be understood that the words"pipe section"
as used throughout this specification includes a standard coupling ;, which is usually used to join two lengths of pipe together or a .J length of pipe itself. Alternatively, "pipe section", within the ¦ meaning intended in this specification, may be a threaded coupling, ~, 20 male or female connector, a short nipple of threaded pipe or any ~ plumbing or electrical pipe fitting or device of copper, brass, ``I aluminum, steel, galvanized iron or any other metal used in these ~'. trades and suitable to the particular application intended.
~ Thus it is apparent that there has been provided, in 4 accordance with the present invention, an electrical ground fix-~, ture that fully satisfies the ob~ects, aims and advantages as set ;, forth above. While the invention has been described in con~unc-tion with specific embodiments thereof, it is evident that many alternatives, modifications and variations will be apparent to `
those s~illed in the art in light of the foregoing description.
Accordingly, it is intended to embrace all such alternatives, :, -, modifications and variations as fall within the spirit and broad scope of the appended claims.
,; ~ ' ' ' `~
Claims (8)
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. An electrical ground fixture comprising:
a metal pipe section, and a securing means for a ground wire associated therewith, said securing means comprising:
a metal casing adapted to receive the ground wire with-in, said casing being integrally connected with and positioned exteriorly on said pipe section, and a clamp operatively associated with and movable with res-pect to said casing, for securing the ground wire within said me-tal casing, whereby a ground path is provided between the secured ground wire and said casing and metal pipe section.
a metal pipe section, and a securing means for a ground wire associated therewith, said securing means comprising:
a metal casing adapted to receive the ground wire with-in, said casing being integrally connected with and positioned exteriorly on said pipe section, and a clamp operatively associated with and movable with res-pect to said casing, for securing the ground wire within said me-tal casing, whereby a ground path is provided between the secured ground wire and said casing and metal pipe section.
2. A fixture according to claim 1, wherein said pipe sec-tion and casing are of copper or brass.
3. A fixture according to claim 1, wherein said clamp means comprises a screw threadably engaged in a hole in said casing, and a clamping plate rotatably attached to the lower end thereof within said casing.
4. A fixture according to claim 3, wherein said clamping plate is provided with transverse ridges on its operative side to assist in gripping the ground wire.
5. A fixture according to claim 3, wherein said casing is elongated in the direction of the axis of said pipe, each end of the casing being provided with an aperture for receiving the ground wire and wherein a base portion of said casing lies adja-cent and integral with said pipe and faces said clamping plate.
6. A fixture according to claim 5, wherein said base of said casing has a "U" or wide -"V" profile in a transverse direc-tion, to assist the gripping of said ground wire between said clamp plate and said casing base.
7. A fixture according to claim 1, wherein said metal cas-ing comprises a split bolt, the base of which is integrally con-nected with and positioned externally on said pipe section, with spaced arms projecting therefrom, and said clamp comprises a clamping plate facing said base and slidably positioned between said arms of said split bolt by means of a nut threaded about the arms of the bolt.
8. A fixture according to claim 1, wherein said metal pipe section is a standard coupling used to join two lengths of pipe together.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA252,975A CA1042526A (en) | 1976-05-20 | 1976-05-20 | Electrical grounding clamp integrally mounted on a pipe section |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA252,975A CA1042526A (en) | 1976-05-20 | 1976-05-20 | Electrical grounding clamp integrally mounted on a pipe section |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1042526A true CA1042526A (en) | 1978-11-14 |
Family
ID=4106008
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA252,975A Expired CA1042526A (en) | 1976-05-20 | 1976-05-20 | Electrical grounding clamp integrally mounted on a pipe section |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1042526A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5850056A (en) * | 1996-04-22 | 1998-12-15 | Andrew Corporation | Grounding kit for a transmission line cable including a clip, a bail and a housing |
| CN110311235A (en) * | 2019-06-25 | 2019-10-08 | 西北工业大学 | The cable connector of high-rise building fire extinguisher bomb Vehicular electromagnetic ejection system |
-
1976
- 1976-05-20 CA CA252,975A patent/CA1042526A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5850056A (en) * | 1996-04-22 | 1998-12-15 | Andrew Corporation | Grounding kit for a transmission line cable including a clip, a bail and a housing |
| CN110311235A (en) * | 2019-06-25 | 2019-10-08 | 西北工业大学 | The cable connector of high-rise building fire extinguisher bomb Vehicular electromagnetic ejection system |
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