Patent US1661937A successfully refreshed from Google Patents.
Patent US3945705A successfully refreshed from Google Patents.
US3945705A
Expired / Lapsed
US
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Wire-splicing apparatus and contact element therefor
Assignee: 3M Co
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Filing: 1972-06-09
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Granted: 1976-03-23
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Expires: 1992-06-09
Abstract
Abstract One-piece flat contact element with opposing bifurcate ends and opposing centrally open extended sides makes possible a compact wire-splicing assembly capable of accepting a wide range of wire sizes and offering high dielectric strength.
Inventors
- 👤 William J. Seim
- 👤 Richard D. Kahabka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 12:43
CPC Classifications
H; H01; H01R; H01R4/00; H01R4/24; H01R4/2416; H01R4/242; H01R4/2425; H01R4/2429
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
156 words
A wire-connector having a substantially planar spring compression reserve contact element in an insulating body, wherein said element consists of a flat plate of spring metal having an extended-width central portion, parallel legs extending from one end of said central portion to form an upper bifurcate contact member, parallel legs extending from the opposite end of said central portion to form a lower bifurcate contact member, the central slots of said contact members extending into said central portion, the inner ends of said slots remaining separated by a distance approximately 1.5 to 1.7 times the width of each of said legs, the side edges of said central portion being centrally cut away in a generally semicircular pattern to form inwardly curved edges, the least distance between a said edge and a said inner end being substantially equal to the width of each of said legs thus providing a longer dielectric breakdown path between alternate contact elements.
Claim 2
Dependent Claim
156 words
A wire-connector having a substantially planar spring compression reserve contact element in an insulating body, wherein said element consists of a flat plate of spring metal having an extended-width central portion, parallel legs extending from one end of said central portion to form an upper bifurcate contact member, parallel legs extending from the opposite end of said central portion to form a lower bifurcate contact member, the central slots of said contact members extending into said central portion, the inner ends of said slots remaining separated by a distance approximately 1.5 to 1.7 times the width of each of said legs, the side edges of said central portion being centrally cut away in a generally semicircular pattern to form inwardly curved edges, the least distance between a said edge and a said inner end being substantially equal to the width of each of said legs thus providing a longer dielectric breakdown path between alternate contact elements.
Claim 3
Dependent Claim
51 words
Wire-connector of claim 1 wherein the dimensions of said contact element have approximately the following ratio: overall length .270
overall width .142
width of each leg .047
length of each leg .085
width of slot .008
length of slot .100
radius of curved edge .026
thickness of plate .012 - .016.
Claim 4
Dependent Claim
74 words
Wire-connector of claim 1 wherein said insulating body comprises interengaging elongate base and cover members and a body assembly comprising a transversely grooved bottom member, a correspondingly transversely grooved top member, and a said contact element inserted between said members and in line with said grooves for making contact with wires forced into said grooves and wherein said base includes elements defining a transverse channel in alignment with corresponding grooves of said body assembly.
Claim 5
Dependent Claim
34 words
Wire-connector of claim 3 wherein said body assembly includes a wire-cutting knife edge disposed across each of said transverse grooves in position for removal of an unwanted end portion of a wire laid therein.
References Cited (Backward Citations)
US2750572A
Cited
US3189863A
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US3414867A
Cited
US3496522A
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US3708779A
Cited
US3708779B1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-03-23 | 1979-09-22 | 1980-03-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-03-23 | 1983-09-22 | 1984-03-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-03-23 | 1987-09-22 | 1988-03-23 | $7700.00 | Window Closed / Lapsed |