Retainer system for roof-mine tool bit

Details Retainer system for roof-mine tool bit Retainer system for roof-mine tool bit

1983-05-12

1984-10-02

Kundrat, Andrew V.

Joints and connections

Structurally installed in diverse art device

403349, 175410, F16D 100

Patent

active

044744889

ABSTRACT:
A retainer system for detachably coupling a drill bit to a drill steel member when the drill bit is provided with key-way recess portions adapted to telescopingly and/or rotatably receive an interlocking relationship therein correspondingly shaped key-way members carried by the drill steel member.

REFERENCES:
patent: 363122 (1887-05-01), Dimick
patent: 788200 (1905-04-01), Finch
patent: 1001376 (1911-08-01), Elsas
patent: 2092060 (1937-09-01), Gairing
patent: 2158120 (1939-05-01), Hirschberg
patent: 3764153 (1973-10-01), Miller
patent: 4361196 (1982-11-01), Hoyle, Jr.
patent: 4361353 (1982-11-01), Vinson

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