US4043628A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical contact
Assignee: ABB Installation Products Inc
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Filing: 1976-06-18
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Granted: 1977-08-23
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Expires: 1996-06-18
Abstract
Abstract An electrical contact for use preferably in connection with ribbon-type flat cable comprises a rectangularly configured head portion having discrete, individually sloped cutting edges at the upper end thereof for piercing through the webbed insulation between adjacent conductors of the cable, the front and rear walls of the head portion being suitably slotted to receive a conductor and make electrical contact therewith.
Inventors
- 👤 Ronald S. Narozny
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:36
CPC Classifications
H; H01; H01R; H01R12/00; H01R12/50; H01R12/59; H01R12/65; H01R12/67; H01R12/675; H01R4/00; H01R4/24; H01R4/2416; H01R4/2445; H01R4/2458; H01R12/61
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
232 words
An electrical contact comprising: a head portion having a generally rectangular configuration in transverse section and having an upper end and a lower end; and a tail portion integral with and extending from said lower end of said head portion; said head portion being defined by a front wall, a rear wall, and a pair of spaced, opposing sidewalls, there being an elongate first slot extending along the length of and separating said front wall into two front wall portions, there being an elongate second slot extending a given distance along the length of said rear wall from said head portion upper end towards said head portion lower end, said front wall portions, said rear wall, and said sidewalls each terminating at a respective cutting edge adjacent said upper end of said head portion for piercing the insulation about an insulated conductor, the sides of said first and said second slots comprising additional cutting edges, at least one of said additional cutting edges being arranged to sever the insulation about an insulated conductor and engage such conductor, said rear wall having spaced side edges, each of said front wall portions and a respective sidewall connected thereto being hingedly joined to a respective side edge of said rear wall for cantilevered outward deflection of said sidewalls about a respective rear wall side edge upon the receipt of a conductor within said first slot.
Claim 2
Dependent Claim
232 words
An electrical contact comprising: a head portion having a generally rectangular configuration in transverse section and having an upper end and a lower end; and a tail portion integral with and extending from said lower end of said head portion; said head portion being defined by a front wall, a rear wall, and a pair of spaced, opposing sidewalls, there being an elongate first slot extending along the length of and separating said front wall into two front wall portions, there being an elongate second slot extending a given distance along the length of said rear wall from said head portion upper end towards said head portion lower end, said front wall portions, said rear wall, and said sidewalls each terminating at a respective cutting edge adjacent said upper end of said head portion for piercing the insulation about an insulated conductor, the sides of said first and said second slots comprising additional cutting edges, at least one of said additional cutting edges being arranged to sever the insulation about an insulated conductor and engage such conductor, said rear wall having spaced side edges, each of said front wall portions and a respective sidewall connected thereto being hingedly joined to a respective side edge of said rear wall for cantilevered outward deflection of said sidewalls about a respective rear wall side edge upon the receipt of a conductor within said first slot.
Claim 3
Dependent Claim
44 words
An electrical contact as defined in claim 1 wherein each of said sidewalls terminates in a crest adjacent said head portion, said cutting edges of a respective sidewall being axially inclined downwardly respectively from said crest towards said front wall and said rear wall.
Claim 4
Dependent Claim
38 words
An electrical contact as defined in claim 1 wherein each of said front wall portion cutting edges is axially inclined downwardly from the juncture between a respective front wall portion and its respective sidewall towards said first slot.
Claim 5
Dependent Claim
46 words
An electrical contact as defined in claim 1 wherein said second slot divides said rear wall cutting edge into two cutting edge portions, each of said rear wall cutting edge portions being axially inclined downwardly from a respective rear wall side edge towards said second slot.
Claim 6
Dependent Claim
36 words
An electrical contact as defined in claim 1 wherein each of said side wall cutting edges comprises a beveled surface sloping downwardly from the interior surface of said sidewall towards the exterior surface of said sidewall.
Claim 7
Dependent Claim
36 words
An electrical contact as defined in claim 1 wherein each of said side wall cutting edges comprises a beveled surface sloping downwardly from the exterior surface of said sidewall towards the interior surface of said sidewall.
Claim 8
Dependent Claim
38 words
An electrical contact as defined in claim 1 wherein said sidewalls comprise the long dimension of said head portion rectangular configuration and said front and said rear walls comprise the short dimension of said head portion rectangular configuration.
Claim 9
Dependent Claim
25 words
An electrical contact as defined in claim 1 wherein the height of said front wall is essentially equal to the height of said rear wall.
Claim 10
Dependent Claim
24 words
An electrical contact as defined in claim 1 wherein the height of said front wall is greater than the height of said rear wall.
Claim 11
Dependent Claim
24 words
An electrical contact as defined in claim 1 wherein the height of said front wall is less than the height of said rear wall.
Claim 12
Dependent Claim
26 words
An electrical contact as defined in claim 1 wherein the said sidewalls have a maximum height at least equal to the height of said front wall.
Claim 13
Dependent Claim
25 words
An electrical contact as defined in claim 1 wherein said sidewalls have a maximum height at least equal to the height of said rear wall.
Claim 14
Dependent Claim
23 words
An electrical contact as defined in claim 1 wherein said sidewalls have a maximum height greater than the height of said front wall.
Claim 15
Dependent Claim
23 words
An electrical contact as defined in claim 1 wherein said sidewalls have a maximum height greater than the height of said rear wall.
Claim 16
Dependent Claim
37 words
An electrical contact as defined in claim 1 wherein each of said sidewalls terminates in a sharpened crest located adjacent said upper end of said head portion and generally equidistant from the side edges of said sidewall.
Claim 17
Dependent Claim
32 words
An electrical contact as defined in claim 15 wherein said cutting edges of a respective sidewall are axially inclined downwardly respectively from said crest towards said front wall and said rear wall.
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) | 1980-08-22 | 1981-02-21 | 1981-08-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-08-22 | 1985-02-21 | 1985-08-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-08-22 | 1989-02-21 | 1989-08-23 | $7700.00 | Window Closed / Lapsed |