US3864013A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pre-insulated connector for electrical conductors
Assignee: ABB Installation Products Inc
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Filing: 1973-09-19
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Granted: 1975-02-04
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Expires: 1993-09-19
Abstract
Abstract The disclosure is directed to a pre-insulated connector for joining two electrical conductors which have had the insulation removed from the ends thereof. The connector is fabricated from an insulating outer sleeve having a plurality of apertures which extend from the outer surface thereof to the inner surface thereof and which are adapted to be sealed after the connector is assembled to conductors by means of plugs placed in the aperture so as to form a continuous insulating outer sleeve. Concentrically mounted within the outer sleeve is a metallic inner sleeve having a wire stop in the center thereof to limit the insertion of the bared ends of the electrical conductors. In a first embodiment, the rigid inner metallic sleeve has a plurality of threaded apertures each receiving a set-screw in aligned position with the apertures extending through the outer sleeve. An appropriate tool may be introduced through the outer sleeve to engage the set-screws and permit their tightening upon a conductor placed within the connector to join the two. In a second embodiment of the invention the inner metallic sleeve is formed of a deformable material such that the indenter of a crimping tool may be inserted through the outer sleeve and operated so as to deform the inner metallic sleeve into intimate engagement with the conductors placed within the connector.
Inventors
- 👤 Sidney Levy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 00:45
CPC Classifications
H; H01; H01R; H01R4/00; H01R4/28; H01R4/30; H01R4/36; H01R4/10; H01R4/18; H01R4/20; H01R11/00; H01R11/03; H01R11/09
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
259 words
A pre-insulated coupling for joining two electrical conductors comprising: a metallic sleeve of a first predetermined length having a passage therethrough proportioned to accept therein the end of an electrical conductor from which the insulation has been removed; an insulating sleeve formed from a given insulating material and having a second predetermined length greater than said first predetermined length, said insulating sleeve having a generally uniform first outer diameter along said first predetermined length, the opposite ends of said insulating sleeve being tapered so as to terminate in a second outer diameter less than said first outer diameter and arranged to provide a smooth transition between the outer surface of said insulating sleeve and the outer surface of the insulation of an insulated electrical conductor inserted within a respective end of said insulating sleeve; said insulating sleeve having a central passage proportioned to receive therein said metallic sleeve, said central passage extending for said first predetermined length; a plurality of apertures extending through said insulating sleeve from the outer surface thereof to said central passage thereof; means coupling said metallic sleeve to the ends of electrical conductors from which the insulation has been removed which have been inserted into said metallic sleeve; and a plurality of plugs formed from said given insulating material, one for each of said apertures, said plugs when inserted into their associated apertures sealing said apertures; the exposed surfaces of said plugs lying flush with the outer surface of said insulating sleeve and providing a continuous insulating sleeve of homogeneous composition about said metallic sleeve.
Claim 2
Dependent Claim
259 words
A pre-insulated coupling for joining two electrical conductors comprising: a metallic sleeve of a first predetermined length having a passage therethrough proportioned to accept therein the end of an electrical conductor from which the insulation has been removed; an insulating sleeve formed from a given insulating material and having a second predetermined length greater than said first predetermined length, said insulating sleeve having a generally uniform first outer diameter along said first predetermined length, the opposite ends of said insulating sleeve being tapered so as to terminate in a second outer diameter less than said first outer diameter and arranged to provide a smooth transition between the outer surface of said insulating sleeve and the outer surface of the insulation of an insulated electrical conductor inserted within a respective end of said insulating sleeve; said insulating sleeve having a central passage proportioned to receive therein said metallic sleeve, said central passage extending for said first predetermined length; a plurality of apertures extending through said insulating sleeve from the outer surface thereof to said central passage thereof; means coupling said metallic sleeve to the ends of electrical conductors from which the insulation has been removed which have been inserted into said metallic sleeve; and a plurality of plugs formed from said given insulating material, one for each of said apertures, said plugs when inserted into their associated apertures sealing said apertures; the exposed surfaces of said plugs lying flush with the outer surface of said insulating sleeve and providing a continuous insulating sleeve of homogeneous composition about said metallic sleeve.
Claim 3
Dependent Claim
37 words
A pre-insulated coupling as defined in claim 1, wherein said means coupling said metallic sleeve to the bared ends of electrical conductors is a plurality of set-screws, one for each of said apertures in said insulating sleeve.
Claim 4
Dependent Claim
135 words
A pre-insulated coupling as defined in claim 1, further comprising a plurality of threaded apertures in said metallic sleeve, equal in number to the number of apertures in said insulating sleeve; one of said threaded apertures in said metallic sleeve being associated with one of said apertures in said insulating sleeve; said means coupling said metallic sleeve to the bared ends of electrical conductors being a plurality of set-screws equal in number to the number of threaded apertures in said metallic sleeve; said set-screws when advanced in their associated threaded apertures by tools inserted through their associated apertures tightly gripping the bared ends of conductors inserted therein joining said metallic sleeve to said conductors and said apertures being sealed by said plugs after said set-screws have been tightened and the tools removed from said apertures.
Claim 5
Dependent Claim
49 words
A pre-insulated coupling as defined in claim 1, further comprising a conductor stop in said passage of said metallic sleeve to limit the insertion of the bared end of an electrical conductor therein whereby each of the conductors will be permitted to enter the metallic sleeve the same amount.
Claim 6
Dependent Claim
70 words
A pre-insulated coupling as defined in claim 1, wherein said insulating sleeve has two additional passages, one at each end of said central passage and communicating therewith, each of said additional passages being equal in length to one half the difference between said second and said first predetermined lengths; said additional passages proportioned to receive therein and tightly fit about the insulation of an electrical conductor inserted into said coupling.
Claim 7
Dependent Claim
59 words
A pre-insulated coupling as defined in claim 1, wherein said metallic sleeve is deformable and said means for coupling said metallic sleeve to said bared electrical conductor ends is an indentor inserted via each of said plurality of apertures to deform said metallic sleeve into intimate contact with the bared ends of electrical conductors inserted into said metallic sleeve.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-02-03 | 1978-08-05 | 1979-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-02-03 | 1982-08-05 | 1983-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-02-03 | 1986-08-05 | 1987-02-04 | $7700.00 | Window Closed / Lapsed |