US3670298A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric contact blade crimp
Assignee: Heyman Manufacturing Co
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Filing: 1970-12-08
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Granted: 1972-06-13
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Expires: 1990-12-08
Abstract
Abstract An electric plug blade has a crimp using the neck width for part of the crimp finger length improving the strength and reducing the resistance of the blade. Other gripping fingers may be offset from each other, extending the latitudinal distance between one fingertip and an opposite fingertip. The crimp works especially well with thin stock blades.
Inventors
- 👤 Ferdninand Klumpp Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 13:05
CPC Classifications
H; H01; H01R; H01R4/00; H01R4/10; H01R4/18; H01R4/183; H01R4/184
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
96 words
A folded blade formed by a progressive stamping operation having a low electrical resistance comprising a first folded blade portion and a second folded blade portion, a neck portion integral to one of said blade folds, said neck of substantially uniform width along its length, said neck edges extending from said blade parallel to the length of said blade, and crimp fingers extending from said neck; the first finger adjacent said neck having a width approximately equal to said blade width, said finger extending from one edge of the neck beyond one edge of said blade.
Claim 2
Dependent Claim
96 words
A folded blade formed by a progressive stamping operation having a low electrical resistance comprising a first folded blade portion and a second folded blade portion, a neck portion integral to one of said blade folds, said neck of substantially uniform width along its length, said neck edges extending from said blade parallel to the length of said blade, and crimp fingers extending from said neck; the first finger adjacent said neck having a width approximately equal to said blade width, said finger extending from one edge of the neck beyond one edge of said blade.
Claim 3
Dependent Claim
41 words
The invention of claim 1 having at least one offset finger adjacent said first finger, said offset finger having a width approximately equal to said blade width measured from the further edge of said finger to the tip of said finger.
Claim 4
Dependent Claim
43 words
The invention of claim 1 having at least two successive alternately offset fingers adjacent said first finger each said fingers having a width approximately equal to said blade width measured from the further edge of said finger to the tip of said finger.
Claim 5
Dependent Claim
71 words
The invention of claim 1 having at least two successive alternately offset fingers adjacent said first finger each said fingers having a width approximately equal to said blade width measured from the further edge of said finger to the tip of said finger and said blade having at least two successive alternately offset fingers adjacent said first fingers said finger being offset to a point near the centerline of said blade.
Claim 6
Dependent Claim
30 words
The invention of claim 1 having at least two successive alternately offset fingers adjacent said first finger said fingers being offset to a point near the centerline of said blade.
Claim 7
Dependent Claim
20 words
The invention of claim 5 crimped to a wire with one of said fingers crimped around and under said wire.
References Cited (Backward Citations)
US2982938A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-06-13 | 1975-12-13 | 1976-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-13 | 1979-12-13 | 1980-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-13 | 1983-12-13 | 1984-06-13 | $7700.00 | Window Closed / Lapsed |