Mining or in situ disintegration of hard material – Processes – Breaking down by direct contact with fluid
Patent
1988-12-19
1989-09-05
Cohan, Alan
Mining or in situ disintegration of hard material
Processes
Breaking down by direct contact with fluid
102329, 137 1, 137613, E21C 3700
Patent
active
048632201
ABSTRACT:
Providing a fluid pressure pulse generator having a fluid inlet chamber communicating with an accumulator via a movable ball positioned within the inlet chamber, a narrow fluid passageway bypassing the ball, an outlet chamber coupled to a valve seat for preventing communication between the outlet chamber and the accumulator when the movable ball assumes a first position against the valve seat and for permitting the outlet chamber to communicate with the accumulator when the ball is separated from the valve seat in a second position, introducing fluid within the fluid inlet chamber causing the ball to assume the first position and for causing the fluid to flow through the passageway into the accumulator until fluid pressure is very high; and thereafter rapidly reducing fluid pressure within the inlet chamber to cause the ball to assume the second position for in turn causing high impulse ejection of fluid from the accumulator into the outlet chamber.
REFERENCES:
patent: 2650615 (1953-09-01), Nesbam
patent: 2672129 (1954-03-01), Fischer
patent: 2901977 (1959-09-01), Synder
patent: 3431934 (1969-03-01), Riordan
patent: 4187764 (1980-02-01), Cho
patent: 4246921 (1981-01-01), Beccaria et al.
patent: 4669783 (1987-06-01), Kolle
Cohan Alan
Nathans Robert L.
Singer Donald J.
The United States of America as represented by the Secretary of
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