Tool with torque-transmitting working surfaces and method for th

Details Tool with torque-transmitting working surfaces and method for th Tool with torque-transmitting working surfaces and method for th

1992-05-20

1993-11-09

Smith, James G.

Tools

Wrench, screwdriver, or driver therefor

Having work engaging and force exerting portion inserted...

81900, 76116, 76DIG12, B25B 1500

Patent

active

052592804

ABSTRACT:
A invention relates to tool having working surfaces (5) which transmit torque by application against a workpiece and are provided with particles of friction material (8) consisting of metallic or mineral material, such as quartz and/or diamond chips, attached by metallic embedment, and for optimal development of the working surface for the transmission of torque there is an electroplated metallic base layer (7) for solely surface application of the particles of friction material (8) of an embedment layer (9) for the particles of friction material which is then also electroplated, the thickness (x) of the base layer (7) being less than that of the embedment layer (9) and the thickness (y) of the latter being less than the particle size of the particles of friction material (8).

REFERENCES:
patent: 5036733 (1991-08-01), Tiholiz et al.

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