GB2516645A - Electrical earthing bush - Google Patents

Electrical earthing bush Download PDF

Info

Publication number
GB2516645A
GB2516645A GB1313433.3A GB201313433A GB2516645A GB 2516645 A GB2516645 A GB 2516645A GB 201313433 A GB201313433 A GB 201313433A GB 2516645 A GB2516645 A GB 2516645A
Authority
GB
United Kingdom
Prior art keywords
bush
electrical
earthing
earth
connection
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.)
Withdrawn
Application number
GB1313433.3A
Other versions
GB201313433D0 (en
Inventor
Christopher Rowe
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 GB1313433.3A priority Critical patent/GB2516645A/en
Publication of GB201313433D0 publication Critical patent/GB201313433D0/en
Publication of GB2516645A publication Critical patent/GB2516645A/en
Withdrawn legal-status Critical Current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
    • H01R4/58—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

Landscapes

  • Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)

Abstract

A brass bush has a lip 2 of sufficient depth that it can incorporate threaded holes 1. The holes provide a connection via a screw for protective conductors. Thus an earth connection between conduits can be made via a separate conductor rather than through the mechanical joint itself.

Description

Specification Document for Electrical Earthing Bush This invention relates to electrical metal conduits. Metal conduit relies upon a tight mechanical connection for its earth fault path. The connection to earth can be unsatisfactory due to painted distribution boards and electrical accessories or loose brass bushes. At present the bushes are made too thinly making tightening difficult. On occasion a gap into the electrical accessory can be seen allowing debris in and potentially causing faults.
To overcome these problems my invention proposes a raised lip on the bush that has a threaded hole on each side. A conductor can be screwed directly to the bush and taken to earth. This would provide a more reliable electrical earth connection rather than a mechanical earth. As the electrical earthing bush has a larger lip tightening is easier. The larger lip that enables connection of an earth conductor via a screw ensures no debris can enter into the electrical enclosure by completely covering the entry hole.
With rising copper prices metal conduits should be considered as the circuit protective conductor to lower the cost of certain electrical installations. The electrical earthing bush would then be able to provide reliable connection for the metal conduits at every electrical accessory and distribution board. The electrical earthing bush can be used to rectify conduit earthing problems such as metal conduit that is used for cable containment into plastic accessories. The electrical earthing bush could be used to replace the standard brass bush as it is easier to tighten, is a larger surface area that covers the entry hole completely and offers a direct earth connection from the metal conduit.
An example of the invention will now be described by referring to the accompanying drawing Figure 1 shows the raised lip of the earthing bush 2 and the threaded holes on each side of the bush 1. The thread of the bush 3 can be screwed into the coupler of the conduit. A lugged earth conductor can be connected to the bush via a screw tightened into thread 1.
Page 1

Claims (3)

  1. Claims: 1. A brass electrical bush with raised edges to provide threaded holes in the bush.
  2. 2. A threaded hole in the raised edges so a screw can be tightened into the bush.
  3. 3. An earth conductor can be connected via a screw into the thread in claim 2 to provide a direct connection to the metal conduit.Page 2
GB1313433.3A 2013-07-27 2013-07-27 Electrical earthing bush Withdrawn GB2516645A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1313433.3A GB2516645A (en) 2013-07-27 2013-07-27 Electrical earthing bush

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1313433.3A GB2516645A (en) 2013-07-27 2013-07-27 Electrical earthing bush

Publications (2)

Publication Number Publication Date
GB201313433D0 GB201313433D0 (en) 2013-09-11
GB2516645A true GB2516645A (en) 2015-02-04

Family

ID=49167036

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1313433.3A Withdrawn GB2516645A (en) 2013-07-27 2013-07-27 Electrical earthing bush

Country Status (1)

Country Link
GB (1) GB2516645A (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1899365A (en) * 1931-11-27 1933-02-28 Thomas & Betts Corp Grounding bushing
US4806108A (en) * 1982-09-13 1989-02-21 Meinhardt Ben W Grounding bushing
US4954084A (en) * 1989-09-06 1990-09-04 Marine Hardware, Inc. Shaft-grounding stuffing box cover
US5928032A (en) * 1997-01-31 1999-07-27 Lucent Technologies, Inc. Coaxial cable power adapter
WO2010019927A1 (en) * 2008-08-15 2010-02-18 David Angelo Quattro Electrical fitting including an intergral grounding mechanism

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1899365A (en) * 1931-11-27 1933-02-28 Thomas & Betts Corp Grounding bushing
US4806108A (en) * 1982-09-13 1989-02-21 Meinhardt Ben W Grounding bushing
US4954084A (en) * 1989-09-06 1990-09-04 Marine Hardware, Inc. Shaft-grounding stuffing box cover
US5928032A (en) * 1997-01-31 1999-07-27 Lucent Technologies, Inc. Coaxial cable power adapter
WO2010019927A1 (en) * 2008-08-15 2010-02-18 David Angelo Quattro Electrical fitting including an intergral grounding mechanism

Also Published As

Publication number Publication date
GB201313433D0 (en) 2013-09-11

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)