Patent US4002391A successfully refreshed from Google Patents.
US4002391A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Insulation slicing terminal
Assignee: Nortel Networks Ltd
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Filing: 1976-03-03
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Granted: 1977-01-11
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Expires: 1996-03-03
Abstract
Abstract An insulation slicing terminal, stamped from electrically conducting sheet material, has a base portion and two cantilevered legs extending from the base portion providing opposed side edges between which a conductor is positioned. The top edge and side edge of each leg intersect at an abrupt angle to form insulation slicing edges, the two top edges forming a shallow Vee formation. An initial small gap is provided between the side edges by a first swage on one leg near the junction with the base portion. A further swage on one of the legs nearer the top of the leg acts to prevent movement of the conductor out of the terminal once the wire is inserted past the further swage. As a further feature, the shallow Vee formation, of the top edges, has an apex prior to slitting which is a radiused flat, permitting off-center tolerances on slitting without detrimentally affecting the insulation slicing edges.
Inventors
- 👤 Robert Brian Dunn
- 👤 John Davidson Lee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 08:48
CPC Classifications
H; H01; H01R; H01R4/00; H01R4/24; H01R4/2416; H01R4/242; H01R4/2425
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
217 words
An insulation slicing terminal for insulated electrical conductors, said terminal of electrically conducting sheet material, comprising: a base portion; a pair of adjacent legs cantilevered from said base portion, said pair of legs including opposed side edges for reception of a conductor therebetween; each of said legs further including a top edge, said top edges inclined towards each other in a shallow Vee formation, the top edge of each leg intersecting the related side edge at an abrupt angle to form insulation slicing edges; a first swage on the side edge of one of said legs, said first swage positioned near the junction of said leg with said base portion and extending from the plane of the side edge to maintain a small gap between said opposed side edges; a further swage on the side edge of one of said legs, said further swage at a position between said first swage and said shallow Vee formation; the arrangement such that on positioning an insulated connector in said Vee formation, the insulation is sliced from opposed sides of the conductor by said insulation slicing edges as the conductor is forced into said small gap between the opposed side edges and past said further swage, said further swage adapted to prevent movement of said conductor out of said terminal.
Claim 2
Dependent Claim
217 words
An insulation slicing terminal for insulated electrical conductors, said terminal of electrically conducting sheet material, comprising: a base portion; a pair of adjacent legs cantilevered from said base portion, said pair of legs including opposed side edges for reception of a conductor therebetween; each of said legs further including a top edge, said top edges inclined towards each other in a shallow Vee formation, the top edge of each leg intersecting the related side edge at an abrupt angle to form insulation slicing edges; a first swage on the side edge of one of said legs, said first swage positioned near the junction of said leg with said base portion and extending from the plane of the side edge to maintain a small gap between said opposed side edges; a further swage on the side edge of one of said legs, said further swage at a position between said first swage and said shallow Vee formation; the arrangement such that on positioning an insulated connector in said Vee formation, the insulation is sliced from opposed sides of the conductor by said insulation slicing edges as the conductor is forced into said small gap between the opposed side edges and past said further swage, said further swage adapted to prevent movement of said conductor out of said terminal.
Claim 3
Dependent Claim
30 words
A terminal as claimed in claim 1, said shallow Vee formation having an included angle of between about 100° and 140°, substantially symmetrical about a central axis of the terminal.
Claim 4
Dependent Claim
19 words
A terminal as claimed in claim 2, said shallow Vee formation having an included angle of 120° ± 10°.
Claim 5
Dependent Claim
42 words
A terminal as claimed in claim 1, the outer extremity of said further swage positioned a distance from said intersection of said top and side edge equal to at least the diameter of the largest conductor to be connected to said terminal.
Claim 6
Dependent Claim
15 words
A terminal as claimed in claim 1, including a plurality of pairs of adjacent legs.
Claim 7
Dependent Claim
50 words
A terminal as claimed in claim 1, said Vee formation having an apex, prior to slitting, in the form of a radiused flat within a circular segment, said circular segment having a minimum radius and cord of about 0.003 inches and a maximum radius and cord of about 0.010 inches.
Claim 8
Dependent Claim
20 words
A terminal as claimed in claim 6, said circular segment having a radius and a cord of about 0.007 inches.
References Cited (Backward Citations)
US3234498A
Cited
US3798587A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-01-11 | 1980-07-12 | 1981-01-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-01-11 | 1984-07-12 | 1985-01-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-01-11 | 1988-07-12 | 1989-01-11 | $7700.00 | Window Closed / Lapsed |