GB2611524A - Cable gland - Google Patents

Cable gland Download PDF

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Publication number
GB2611524A
GB2611524A GB2114173.4A GB202114173A GB2611524A GB 2611524 A GB2611524 A GB 2611524A GB 202114173 A GB202114173 A GB 202114173A GB 2611524 A GB2611524 A GB 2611524A
Authority
GB
United Kingdom
Prior art keywords
mounting
gland
nut
earthing ring
cable
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.)
Pending
Application number
GB2114173.4A
Other versions
GB202114173D0 (en
Inventor
Hendley Darren
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to GB2114173.4A priority Critical patent/GB2611524A/en
Publication of GB202114173D0 publication Critical patent/GB202114173D0/en
Publication of GB2611524A publication Critical patent/GB2611524A/en
Pending legal-status Critical Current

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
    • H01R4/28—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
    • H01R4/64—Connections between or with conductive parts having primarily a non-electric function, e.g. frame, casing, rail
    • H01R4/643—Connections between or with conductive parts having primarily a non-electric function, e.g. frame, casing, rail for rigid cylindrical bodies
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/73—Means for mounting coupling parts to apparatus or structures, e.g. to a wall
    • H01R13/74—Means for mounting coupling parts in openings of a panel
    • 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
    • H01R4/302—Clamped connections, spring connections utilising a screw or nut clamping member having means for preventing loosening of screw or nut, e.g. vibration-proof connection
    • 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
    • H01R4/58—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
    • H01R4/66—Connections with the terrestrial mass, e.g. earth plate, earth pin
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G15/00—Cable fittings
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
    • H02G3/02—Details
    • H02G3/06—Joints for connecting lengths of protective tubing or channels, to each other or to casings, e.g. to distribution boxes; Ensuring electrical continuity in the joint
    • H02G3/0616—Joints for connecting tubing to casing
    • H02G3/0625—Joints for connecting tubing to casing with means for preventing disengagement of conductors
    • H02G3/0666—Joints for connecting tubing to casing with means for preventing disengagement of conductors with means clamping the armour of the conductor
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
    • H02G3/02—Details
    • H02G3/06—Joints for connecting lengths of protective tubing or channels, to each other or to casings, e.g. to distribution boxes; Ensuring electrical continuity in the joint
    • H02G3/0616—Joints for connecting tubing to casing
    • H02G3/0625—Joints for connecting tubing to casing with means for preventing disengagement of conductors
    • H02G3/0675—Joints for connecting tubing to casing with means for preventing disengagement of conductors with bolts operating in a direction parallel to the conductors
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
    • H02G3/22—Installations of cables or lines through walls, floors or ceilings, e.g. into buildings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B33/00—Features common to bolt and nut
    • F16B33/002—Means for preventing rotation of screw-threaded elements
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/73—Means for mounting coupling parts to apparatus or structures, e.g. to a wall
    • H01R13/74—Means for mounting coupling parts in openings of a panel
    • H01R13/746—Means for mounting coupling parts in openings of a panel using a screw ring

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Cable Accessories (AREA)

Abstract

A cable gland 8 for terminating an armoured cable 25, the cable gland has a gland body 10 having a through-going passage 12, a torquable head, a mounting stub 24, with an external screw thread which lies on an inner side of the torquable head for receipt in an opening of a housing wall 58, an armour-gripper portion 18 (Figure 2), and an externally-threaded gland-nut-receiving portion 20 which lies on an outer side of the torquable head and is configured such that armour of the armoured cable gripped against the armour-gripper portion by a gland nut 36 screwed onto the screw thread; the gland body is able to be secured to a housing wall by use of a mounting nut 48 threadedly received upon the mounting stub; the gland additionally has an earthing ring 38a having an opening to receive the mounting stub; the earthing ring is provided with at least one locking surface 50 which is engageable with the mounting nut when the earthing ring and the mounting nut are both on the mounting stub to lock the mounting nut against rotation relative to the earthing ring.

Description

CABLE GLAND
The present invention relates to a cable gland for electrical cable, and in particular to an earthing ring for use in such a gland.
The invention is of particular utility in relation to armoured cables, which are commonly used in mains electrical supply systems for transmission of electrical power, although they have other functions. In a conventional steel wire armoured cable ("SWA"), multiple strands of steel wire form armouring around a core containing electrical conductors (wires). The steel wires are typically wound about the core in a shallow-pitched helix. Outside them is a tough exterior cable jacket, and a tubular layer beneath the armour surrounds the conductors. The armour provides physical protection for the conductors, preventing them from being exposed and from penetration by foreign bodies, and it also serves as a robust earth connection.
Where an armoured cable enters a unit to which it is to be electrically connected, such as the consumer unit used to distribute power in a building's mains electrical supply, it is conventional to terminate it (i.e. to secure the cable and to earth it) by use of a cable gland. For reasons that will be explained in more detail below, the installation of the cable gland is a troublesome process, involving the use of multiple tools and -in many instances -a degree of brute force or improvisation.
An object of the present invention is to alleviate the difficulties experienced in installing a cable gland.
According to the present invention, there is a cable gland for terminating an armoured electrical cable, the cable gland comprising: - a gland body which comprises a through-going passage, a torquable head, a mounting stub with an external screw thread on an inner side of the torquable head for receipt in an opening of a housing wall, an armour-gripper portion and an externally-threaded gland-nut-receiving portion on an outer side of the torquable head configured such that armour of the armoured cable is able to be gripped against the armour-gripper portion by a gland nut screwed onto the screw thread, - a mounting nut which is threadedly receivable on the mounting stub, and - an earthing ring having an opening to receive the mounting stub, so that by inserting the mounting stub through the opening in the housing wall, placing the earthing ring on the mounting stub, and then screwing the mounting stub into the mounting nut, the cable gland and the earthing ring are able to be secured to the housing wall, wherein the earthing ring is provided with at least one locking surface which is engageable with the mounting nut when the earthing ring and the mounting nut are both on the mounting stub to lock the mounting nut against rotation relative to the earthing ring.
According to another aspect of the present invention, there is an earthing ring for a cable gland, comprising a first through-going opening for receiving a mounting stub of a gland body, a second through-going opening offset from the first through-going opening for receiving a threaded fastener, and at least one locking surface arranged to engage a peripheral face of a mounting nut when both the mounting nut and the earthing ring are received on the gland body, to lock the mounting nut against rotation relative to the earthing ring..
Specific embodiments of the present invention will now be described, by way of example only, with reference to the accompanying drawings, in which: Figure 1 depicts components of a cable gland belonging to the prior art; Figure 2 depicts a cable and gland body at an intermediate point in their installation; Figures 3a and 3b both depict a new earthing part in accordance with the present invention in two views, respectively without and with a mounting nut; and Figure 4 depicts a cable and a cable gland embodying the present invention, installed in a consumer unit.
An example of a known cable gland 8 is depicted in Figure 1 and comprises a gland body 10 which is generally in the form of a hollow cylinder having a through-going bore 12 extending from an outer end 14 to an inner end 16. At its exterior the gland body 10 has the following sequence of features: an armour-gripper portion 18 which tapers inwardly toward the outer end 14 and which is patterned to promote grip on the armour, having in this example a knurled finish; a gland-nut-receiving portion 20 which is externally screw threaded; a torquable head 22 which in this example comprises a hexagonal flange to be engaged using a spanner or gland pliers; and a mounting stub 24 which is externally screw threaded.
To terminate an armoured cable 25, an operative must first prepare it as depicted in Figure 2. Both the cable jacket 26 and the steel wire armour 28 have here been stripped from an end portion of the cable, so that the conductors 30 are visible -they are led through the gland body 10 and will, following installation, extend into a consumer unit for electrical connection to it. This example is a two-core cable but there is no restriction in this respect and cables having a different number of conductors are commonplace. The cable jacket 26 has been cut back further than the armour 28, so that a short length of the armour 28 extends beyond the end 32 of the cable jacket 26. Beneath the armour in this region, tubular layer 34 of the cable, surrounding the conductors 30, is visible in the drawing.
The strands making up the armour 28 have been splayed somewhat, enabling the armour-gripper portion 18 of the gland body 10 to be introduced within them. A gland nut 36 is seen in Figure 1 and has an internal thread and a torquable external shape, which in this example is of hexagonal form to engage with a spanner or with gland pliers. The gland nut 36 is omitted from Figure 2, but is to be understood to have been received on the cable 25 at an earlier stage, so that it can be advanced onto the threaded gland-nut-receiving portion 20 and, being screwed and tightened thereupon, serve to trap the armour 28 against the armour-gripper portion 18. In this way the armour 28 of the cable 25 is securely fastened to the gland body 10, and a reliable earthing connection is made from the armour 28 to the gland 8.
The mounting stub 24 can then be passed through an opening in a wall of the consumer unit (which is not seen in Figure 2). An earthing ring 38 is received on the mounting stub 24. The known earthing ring 38 depicted in Figure 1 comprises a loop portion 40 to receive and encircle the mounting stub 24, via a through-going opening 41, and a tab portion 42. The tab portion has a further through-going opening 44 to receive a bolt 46. In use, the tab is bolted to the wall of the consumer unit, which prevents the cable gland 8 from turning about its own axis, and the bolt 46 also receives an earthing strap (not shown) to complete an earth connection to the armour 28. A mounting nut 48 is threadedly received on the mounting stub 24, sandwiching the earthing ring 38 against the wall of the consumer unit and, when tightened, securing the cable gland 8 to the consumer unit wall.
Current industry practice is to secure the cable gland 8 to the cable, and then to secure the cable gland 8 to the consumer unit. The process is not straightforward or convenient. Both stages involve the use of two pairs of cable pliers or of two spanners, firstly to hold the torquable head 22 and the gland nut 36 respectively, while those parts are tightened to grip the armour 28, and then to hold the mounting nut 48 and the torquable head 22 respectively, while they are tightened to secure the cable gland 8. Both operations are time-consuming and awkward, and in fact the mounting nut 48 often proves inaccessible within the consumer unit, so that tightening with a hammer applied to a chisel or screwdriver can be the only available solution for crudely tightening the mounting nut 48.
A more convenient mode of assembly is needed.
The illustrated embodiment of the present invention provides an improved earthing ring 38a depicted in Figures 3 and 4, which serves during assembly -and before the mounting nut 48 has been tightened -to engage with the mounting nut 48, mechanically locking it against rotation relative to the earthing ring 38a. A cable gland embodying the present invention may comprise all the same components depicted in Figure 1, except that the prior art earthing ring 38 is replaced with the new earthing ring 38a.
In the present embodiment, the earthing ring 38a engages with the mounting nut 48 through a locking surface 50. The mounting nut 48 is of conventional type, having a number of flats 54 around its periphery. In the depictions it is a hex nut with six flats 54 but there is no reason why, for example, a square nut could not be used, or why some other torquable feature could not be provided on the mounting nut 48. The locking surface 50 faces radially inwardly, to engage the mounting nut's periphery. In the illustrated example it is a planar face on an upstand 56 of the earthing ring. Its distance from a central point of a circular through-going opening 41 which receives the mounting stub 24 is such that during assembly, with the earthing ring on the mounting stub 48 and the mounting nut 48 adjacent it on the mounting stub 48, the locking surface 50 abuts one of the nut's peripheral flats 54, preventing the mounting nut 48 from turning relative to the earthing ring 38a.
It will be apparent to the skilled person that the locking surface 50 which locks the mounting nut 48 against rotation relative to the earthing ring 38a could be formed in various different ways. For example, the earthing ring 38a could be provided with a shallow hexagonal recess around the through-going opening 41, to receive and lock the mounting nut 48. In this case, the recess's internal faces would each form a locking surface for the mounting nut. Another embodiment might have a pair of upstands on opposite sides of the mounting nut 48, to lock it against relative rotation.
The cable gland embodying the present invention lends itself to the following mode of installation, which is simpler than the one described above to carry out and requires only a single spanner or a single pair of gland pliers.
Firstly, the mounting stub 24 of the gland body 10 is inserted into the opening in wall 58 of the consumer unit's housing (see Figure 4). Then the earthing ring 38a is slipped onto the mounting stub 24 and is bolted to the housing wall through the further through-going opening 44 using the bolt 46, which keeps the earthing ring 38a in place and prevents it from turning. Then the mounting nut 48 is introduced onto the mounting stub 24, and the gland body 10 is turned to advance the mounting nut 48. Initially the mounting nut 48 is held with the fingertips to keep it from spinning, but as it advances its periphery engages the locking surface 50, which then prevents the mounting nut 48 from turning. Continued turning of the gland body 10 tightens the assembly, sandwiching the earthing ring 38a and the housing wall 58 between the mounting nut 48 and the torquable head 22 of the gland body 10. A spanner or pliers may be used upon the torquable head 22 to provide sufficient torque, but only one such tool is needed.
Next, the cable 25 is introduced to the gland body 10. Its armour 28 is arranged around the armour-gripper 18 and the gland nut 36 is screwed down onto the gland-nut-receiving portion 20 to grip the armour 28 and secure the cable 25 in position. Pliers or a single spanner can be used to tighten the gland nut 36, but again only a single tool is needed and the process is simplified by virtue of the fact that the gland body 10 is kept immobile by its mounting on the housing.
The result is a simplified assembly process requiring a reduced number of tools.
The invention is able to be implemented with cable glands over a range of different sizes. Any suitable material may be used in its manufacture including brass or steel.

Claims (6)

  1. CLAIMS1. A cable gland for terminating an armoured electrical cable, the cable gland comprising: - a gland body which comprises a through-going passage, a torquable head, a mounting stub with an external screw thread on an inner side of the torquable head for receipt in an opening of a housing wall, an armour-gripper portion and an externally-threaded gland-nut-receiving portion on an outer side of the torquable head configured such that armour of the armoured cable is able to be gripped against the armour-gripper portion by a gland nut screwed onto the screw thread, - a mounting nut which is threadedly receivable on the mounting stub, and - an earthing ring having an opening to receive the mounting stub, so that by inserting the mounting stub through the opening in the housing wall, placing the earthing ring on the mounting stub, and then screwing the mounting stub into the mounting nut, the cable gland and the earthing ring are able to be secured to the housing wall, wherein the earthing ring is provided with at least one locking surface which is engageable with the mounting nut when the earthing ring and the mounting nut are both on the mounting stub to lock the mounting nut against rotation relative to the earthing ring.
  2. 2. A cable gland as claimed in claim 1 in which the earthing ring further comprises a tab having a hole to receive a threaded fastener to secure the tab to the housing wall.
  3. 3. A cable gland as claimed in claim 2 or claim 3 in which the earthing ring comprises a flat plate and an upstand forming the locking surface.
  4. 4. A cable gland as claimed in claim 2 or claim 3 in which the locking surface is arranged to engage a peripheral surface of the mounting nut.
  5. 5. An earthing ring for a cable gland, comprising a first through-going opening for receiving a mounting stub of a gland body, a second through-going opening offset from the first through-going opening for receiving a threaded fastener, and at least one locking surface arranged to engage a peripheral face of a mounting nut when both the mounting nut and the earthing ring are received on the gland body, to lock the mounting nut against rotation relative to the earthing ring..
  6. 6. An earthing ring as claimed in claim 5 which comprises a flat plate through which the first and second through-going openings are formed, and an upstand providing the locking surface.
GB2114173.4A 2021-10-04 2021-10-04 Cable gland Pending GB2611524A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2114173.4A GB2611524A (en) 2021-10-04 2021-10-04 Cable gland

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2114173.4A GB2611524A (en) 2021-10-04 2021-10-04 Cable gland

Publications (2)

Publication Number Publication Date
GB202114173D0 GB202114173D0 (en) 2021-11-17
GB2611524A true GB2611524A (en) 2023-04-12

Family

ID=78497889

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2114173.4A Pending GB2611524A (en) 2021-10-04 2021-10-04 Cable gland

Country Status (1)

Country Link
GB (1) GB2611524A (en)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1946862A (en) * 1931-12-10 1934-02-13 Jr Louis A Koch Ground terminal
GB1382981A (en) * 1970-12-31 1975-02-05 British Engines Ltd Glands
GB2323977A (en) * 1997-02-05 1998-10-07 Bicc Plc Cable glands
US20070254535A1 (en) * 2004-08-19 2007-11-01 Pearce Richard H Electrical Earthing Nut
KR20100000086U (en) * 2008-06-25 2010-01-06 한국단자공업 주식회사 Ring terminal
GB2592263A (en) * 2020-02-24 2021-08-25 Linian Lab Ltd Fastening device

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1946862A (en) * 1931-12-10 1934-02-13 Jr Louis A Koch Ground terminal
GB1382981A (en) * 1970-12-31 1975-02-05 British Engines Ltd Glands
GB2323977A (en) * 1997-02-05 1998-10-07 Bicc Plc Cable glands
US20070254535A1 (en) * 2004-08-19 2007-11-01 Pearce Richard H Electrical Earthing Nut
KR20100000086U (en) * 2008-06-25 2010-01-06 한국단자공업 주식회사 Ring terminal
GB2592263A (en) * 2020-02-24 2021-08-25 Linian Lab Ltd Fastening device

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Publication number Publication date
GB202114173D0 (en) 2021-11-17

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