Tungsten carbide welded printer tips

Details Tungsten carbide welded printer tips Tungsten carbide welded printer tips

1992-12-08

1994-11-08

Wiecking, David A.

Printing

Selective or progressive

Bed and platen machines

40012432, 219 7801, B41J 226

Patent

active

053616936

ABSTRACT:
A process and apparatus for welding a tungsten carbide printing tip of a dot matrix printer to a hammerspring by holding the hammerspring in a fixture with a first electrode in adjacent relationship thereto and a second electrode in adjacent relationship to a tungsten carbide printing tip having cobalt and forcing said tungsten carbide printing tip into adjacent relationship with said hammerspring while causing cobalt in said tungsten carbide printing tip to be welded to said hammerspring through a welding current between said first and second electrodes.

REFERENCES:
patent: 1645710 (1927-10-01), Meadowcroft
patent: 4134691 (1979-01-01), Matschke
patent: 4503768 (1985-03-01), Whitaker
patent: 5093547 (1992-03-01), Kusano et al.

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