Wear-resistant chuck for driving hard-shank bits

Details Wear-resistant chuck for driving hard-shank bits Wear-resistant chuck for driving hard-shank bits

1993-03-18

1994-08-23

Bishop, Steven C.

Chucks or sockets

Socket type

Obliquely guided reciprocating jaws

279 466, 279 436, 279123, B23B 3112

Patent

active

053401280

ABSTRACT:
A chuck for driving drill bits an the like having shafts of hardened steel is provided with clamping jaws which at least at their clamping surfaces have a coating of diamond dust, so that they will have a resistance to abrasion that is greater than that of hardened steel. The diamond dust can embed itself in the clamping jaws. The entire chuck jaw may be made with a material having that property or one or more clamping parts of the jaw may be made of such a material, or the coating may be provided on a part of the chuck jaw or on the clamping parts.

REFERENCES:
patent: 150983 (1874-05-01), Stetson
patent: 914255 (1909-03-01), Farnham
patent: 1898264 (1933-02-01), Proefke
patent: 2346706 (1944-04-01), Stoner
patent: 4752165 (1988-06-01), Wanner
patent: 4778730 (1988-10-01), Zucker
patent: 4902025 (1990-02-01), Zimdars
Derwent Abstract, Class P, AN 91-140682 & CH-A-677 078 (B. Hribovsek) Apr. 15, 1991.

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