Bit coupling means

Details Bit coupling means Bit coupling means

1974-05-31

1976-03-09

Abbott, Frank L.

Mining or in situ disintegration of hard material

Miscellaneous

403320, 403343, E21C 1300

Patent

active

039428389

ABSTRACT:
A rock hammer and more particularly a rock hammer having thereon improved means for securing a cutting or breaking bit assembly thereto.

REFERENCES:
patent: 2049289 (1936-07-01), Burns et al.
patent: 2318590 (1943-05-01), Boynton
patent: 2672358 (1954-03-01), Wienola
patent: 3258284 (1966-06-01), Phipps
patent: 3544166 (1970-12-01), Proctor
patent: 3709306 (1973-01-01), Curington
patent: 3806265 (1974-04-01), Hattan

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