US3812448A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical connector
Assignee: ABB Installation Products Inc
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Filing: 1972-11-24
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Granted: 1974-05-21
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Expires: 1992-11-24
Abstract
Abstract An electrical connector having an internal tooth structure and a selectively grooved conductor engaging inner surface therebetween providing reduced thickness web portions responsive to the expansion and contraction of an enclosed conductor to prevent relative movement at the interface between the conductor and the connector thereby maintaining secure mechanical and electrical contact therebetween under even extreme conditions of temperature cycling.
Inventors
- 👤 L Haitmanek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 07:44
CPC Classifications
H; H01; H01R; H01R4/00; H01R4/24; H01R4/2495; H01R4/10; H01R4/18; H01R4/183; H01R4/184
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
288 words
An electrical connector comprising: a base member formed from electrically conducting ductile metallic material and having an inner surface, an outer surface, and a first thickness defined by the spacing bEtween said inner surface and said outer surface; a series of generally elongate selectively spaced grooved portions arranged in a predetermined pattern within said base member inner surface, the bottom of said grooved portions extending below said base member inner surface a predetermined depth and the sidewalls of said grooved portions extending upwardly normal to the plane of said inner surface, the spacing between the bottom of said grooved portions and said base member outer surface defining a second thickness thereat, said second thickness being less than said first thickness; a series of selectively deformable teeth extending outwardly from said base member inner surface a predetermined distance, said teeth being arranged in pairs, each tooth of said pair extending along substantially the length of and adjacent to an associated one of the pair of opposing sidewalls of an associated one of said grooved portions, said teeth having convex exterior surfaces defining the sides thereof, said exterior surfaces converging to a sharp edge defining the top of said teeth, the exterior convex surface of each of said teeth adjacent a corresponding grooved portion communicating smoothly with an adjacent sidewall of said grooved portion to provide a continuous surface thereat; the regions of said base member defined by said second thickness providing expandable web portions intermediate said base member first thickness regions, said base member thereby being longitudinally responsive to the expansion and contraction of a conductor disposed therewithin upon the selective closure of said base member about such conductor so as to form a mechanical and electrical coupling therebetween.
Claim 2
Dependent Claim
288 words
An electrical connector comprising: a base member formed from electrically conducting ductile metallic material and having an inner surface, an outer surface, and a first thickness defined by the spacing bEtween said inner surface and said outer surface; a series of generally elongate selectively spaced grooved portions arranged in a predetermined pattern within said base member inner surface, the bottom of said grooved portions extending below said base member inner surface a predetermined depth and the sidewalls of said grooved portions extending upwardly normal to the plane of said inner surface, the spacing between the bottom of said grooved portions and said base member outer surface defining a second thickness thereat, said second thickness being less than said first thickness; a series of selectively deformable teeth extending outwardly from said base member inner surface a predetermined distance, said teeth being arranged in pairs, each tooth of said pair extending along substantially the length of and adjacent to an associated one of the pair of opposing sidewalls of an associated one of said grooved portions, said teeth having convex exterior surfaces defining the sides thereof, said exterior surfaces converging to a sharp edge defining the top of said teeth, the exterior convex surface of each of said teeth adjacent a corresponding grooved portion communicating smoothly with an adjacent sidewall of said grooved portion to provide a continuous surface thereat; the regions of said base member defined by said second thickness providing expandable web portions intermediate said base member first thickness regions, said base member thereby being longitudinally responsive to the expansion and contraction of a conductor disposed therewithin upon the selective closure of said base member about such conductor so as to form a mechanical and electrical coupling therebetween.
Claim 3
Dependent Claim
30 words
An electrical connector as defined in claim 1 wherein said teeth extend generally transversely across said base member inner surface generally normal to the longitudinal axis of said base member.
Claim 4
Dependent Claim
40 words
An electrical connector as defined in claim 1 wherein the height of said teeth above said base member inner surface is at least equal to the depth of the bottom of said grooved portions below said base member inner surface.
Claim 5
Dependent Claim
26 words
An electrical connector as defined in claim 3 wherein said teeth are all of equal height and have symmetrical convex exterior surfaces defining the sides thereof.
Claim 6
Dependent Claim
26 words
An electrical connector as defined in claim 1 wherein said teeth are all of equal height and have symmetrical convex exterior surfaces defining the sides thereof.
Claim 7
Dependent Claim
32 words
An electrical connector as defined in claim 1 wherein the spacing between adjacent pairs of said teeth is greater than the spacing between the opposing teeth of a pair of said teeth.
Claim 8
Dependent Claim
21 words
An electrical connector as defined in claim 1 wherein said teeth are distributed generally evenly over said base member inner surface.
Claim 9
Dependent Claim
17 words
An electrical connector as defined in claim 1 wherein said teeth are arranged in longitudinally extending rows.
Claim 10
Dependent Claim
20 words
An electrical connector as defined in claim 1 further comprising means for coupling said base member to a further member.
Claim 11
Dependent Claim
32 words
An electrical connector as defined in claim 1 wherein the bottom surface of each of said grooved portions is planarly disposed generally parallel to the plane of said base member inner surface.
Claim 12
Dependent Claim
46 words
An electrical connector as defined in claim 1 wherein said base member outer surface has a series of generally elongate recesses disposed therein, said recesses each extending in generally parallel opposed relationship with respect to a corresponding one of said base member inner surface grooved portions.
Claim 13
Dependent Claim
22 words
An electrical connector as defined in claim 11 wherein each of said teeth have symmetrical convex exterior surfaces defining said sides thereof.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-05-20 | 1977-11-19 | 1978-05-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-05-20 | 1981-11-19 | 1982-05-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-05-20 | 1985-11-19 | 1986-05-21 | $7700.00 | Window Closed / Lapsed |