Patent US3707932A successfully refreshed from Google Patents.
US3707932A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical connector, method and apparatus
Assignee: TE Connectivity Corp
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Filing: 1970-08-28
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Granted: 1973-01-02
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Expires: 1990-08-28
Abstract
Abstract An electrical connector formed by a die blanking operation having an improved smooth edge contact surface formed by a fine scraping of said edge to remove the rough fractured surface remaining after the blanking operation; also, the method and apparatus for forming said improved smooth contact surface.
Inventors
- 👤 R Murray
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 02:28
CPC Classifications
B; B21; B21D; B21D53/00; B21D53/36; B21D28/00; B21D28/02; B21D28/16; H; H01; H01R; H01R43/00; H01R43/04; H01R43/048; H01R43/0482; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49117; Y10T29/49204
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
113 words
In a method of making an edge engaging electrical connector having an effectively flat edge contact surface wherein the connector is initially blanked out from flat metal stock with the blanking operation forming a substantially rough and nonlinear cut edge surface which constitutes an inefficient contact surface for the connector, the improvement which comprises the step of: fine scraping the cut edge by cutting away a thin metal layer from said cut edge to remove at least a substantial portion of said rough and nonlinear cut edge surface and to produce a substantially new effectively flat edge contact surface thereby increasing the area and quality of said edge contact surface of said connector.
Claim 2
Dependent Claim
113 words
In a method of making an edge engaging electrical connector having an effectively flat edge contact surface wherein the connector is initially blanked out from flat metal stock with the blanking operation forming a substantially rough and nonlinear cut edge surface which constitutes an inefficient contact surface for the connector, the improvement which comprises the step of: fine scraping the cut edge by cutting away a thin metal layer from said cut edge to remove at least a substantial portion of said rough and nonlinear cut edge surface and to produce a substantially new effectively flat edge contact surface thereby increasing the area and quality of said edge contact surface of said connector.
Claim 3
Dependent Claim
31 words
In a method of making an edge engaging electrical connector having an effectively Flat edge contact surface as claimed in claim 1 wherein said scraping is directed along said cut edge.
Claim 4
Dependent Claim
40 words
In a method of making an edge engaging electrical connector having an effectively flat edge contact surface as claimed in claim 1 wherein said scraping is performed substantially along the direction of contact engagement intended for said edge contact surface.
Claim 5
Dependent Claim
73 words
In a method of making an edge engaging electrical connector having an effectively flat edge contact surface as claimed in claim 1 wherein said scraping is performed by: maintaining an effective pressurized and yieldable engagement between a straight cutting edge of a scraping tool and said cut edge of said connector; and simultaneously moving said scraping tool relative to said connector along the direction of contact engagement intended for said edge contact surface.
Claim 6
Dependent Claim
56 words
In a method of making an edge engaging electrical connector having an effectively flat edge contact surface as claimed in claim 4 wherein leading and trailing faces of the straight cutting edge of said scraping tool are provided and maintained at a substantial angle to the direction of contact engagement intended for said edge contact surface.
Claim 7
Dependent Claim
98 words
In a method of making an edge engaging electrical connector having an effectively flat edge contact surface as claimed in claim 4 with said edge contact surface having an ultimate clearance less than the size of said scraping tool, the improvement further comprising the steps of: initially blanking out said connector from the flat metal stock so that said cut edge of said connector has a clearance sufficient to accommodate said tool; and sizing said connector to position said substantially new effectively flat edge contact surface at its ultimate clearance after the performance of the fine scraping step.
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) | 1976-01-02 | 1976-07-03 | 1977-01-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-02 | 1980-07-03 | 1981-01-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-02 | 1984-07-03 | 1985-01-02 | $7700.00 | Window Closed / Lapsed |