Rock crushing device

Details Rock crushing device Rock crushing device

1985-07-26

1987-12-08

Novosad, Stephen J.

Mining or in situ disintegration of hard material

Expansible breaking-down devices

Fluid-pressed element

166187, F21C 3710

Patent

active

047115017

ABSTRACT:
A rock crushing device according to the present invention is designed to crush rocks by the use of the expansion pressure generated when an elastic expandable member of a cylindrical configuration is expanded by pressure fluid to be injected into looped pockets provided within the elastic member. The elastic member, made of rubber or similar materials, is provided tightly to cover around a metal shaft having a fluid passage to introduce pressure fluid into the looped pockets of the elastic member.

REFERENCES:
patent: 1630470 (1927-05-01), Clifford
patent: 1863286 (1932-06-01), Sheppard
patent: 1879907 (1932-09-01), Meyer
patent: 1915687 (1933-06-01), Meyer
patent: 2133730 (1938-10-01), Brundred
patent: 2211243 (1940-08-01), Meyer
patent: 2211478 (1940-08-01), Pierce
patent: 2231282 (1941-02-01), Norris
patent: 2238058 (1941-04-01), Johnson et al.
patent: 4349047 (1982-09-01), Ditto et al.

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