Expansible chamber devices – Sealed opening in longitudinal wall of chamber for receiving...
Patent
1979-05-22
1981-06-16
Cohen, Irwin C.
Expansible chamber devices
Sealed opening in longitudinal wall of chamber for receiving...
104161, 277203, F01B 2908
Patent
active
042730317
ABSTRACT:
A fluid pressure containment device utilizing a new design of pressure seal which accomplishes its purpose by a rotary motion of a tube placed inside a vessel. A helical slot cut into the tube causes the tube to rotate by the camming action of a free floating piston placed within the tube. The stationary outer vessel contains openings at its ends through which the working fluid medium may enter and exit and in addition is slotted, longitudinally for an attachment to the free floating piston to pass through the wall of the vessel as fluid pressure moves the piston longitudinally along the slot in the outer vessel. Sealing of the fluid pressure inside the stationary outer vessel is accomplished by the inside tube as it rotates and by a variety of seals which also serve as structural supports against pressure caused forces inside the tube.
More particularly, the present invention relates to an actuating cylinder, the type of which is used as a prime mover, translating pneumatic or hydraulic pressure in a fluid stream to force and movement.
REFERENCES:
patent: 2473430 (1949-06-01), Hoffar
patent: 3221610 (1965-12-01), King et al.
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