Method for producing a molded plastic flat rotary switch

Details Method for producing a molded plastic flat rotary switch Method for producing a molded plastic flat rotary switch

1992-12-08

1994-10-11

Hall, Carl E.

Metal working

Method of mechanical manufacture

Electrical device making

29622, 29882, 29883, 29884, 310235, 310236, H01R 4300

Patent

active

053534921

ABSTRACT:
A method for producing a molded plastic and copper flat rotary switch or commutator with parts of the segments lying in a cylindrical surface is disclosed. A cup-shaped unfinished piece is formed by modification of a flat material, having an outside annular flange and a number of axial grooves which are radially open on the inside as well as distributed uniformly around the periphery corresponding to the number of segments in the cylindrical part of the unfinished piece, on the outside of the cylindrical wall of the unfinished piece, a layer with a thickness which corresponds to the radial thickness of the material parts occluding the grooves radially on the outside is pushed, beginning at the flat part corresponding to the subsequent brush contact surface, toward the free end of the casing with formation of the annular flange and opening of the grooves.

REFERENCES:
patent: 3717928 (1973-02-01), Yamaguchi
patent: 3812576 (1974-05-01), Yamaguchi
patent: 3958326 (1976-05-01), Matsumoto et al.

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