Geometrical instruments
Patent
1976-06-02
1977-05-24
McGlynn, Joseph H.
Geometrical instruments
H01R 300
Patent
active
040251438
ABSTRACT:
Making a spring contact with a precious metal contact surface by feeding a base strip (from which contact body is made) and a precious metal strip (from which contact surface is made) into progressive die which is tooled to form a spring contact body with slot, to put a section of precious metal strip into the slot, to deform edges of the slot to trap the section, to sever the section and trim the body to form the finished contact.
REFERENCES:
patent: 2419469 (1947-04-01), Spiro
patent: 2646613 (1953-07-01), Enzler
patent: 3535781 (1970-10-01), Comey, Jr.
patent: 3585573 (1971-06-01), Robshaw
McGlynn Joseph H.
Olsson Frederick J.
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