Power plants – Pressure fluid source and motor – Pulsator
Patent
1979-11-13
1981-07-28
Hershkovitz, Abraham
Power plants
Pressure fluid source and motor
Pulsator
60568, 60593, 91533, 92134, B60T 1300
Patent
active
042803268
ABSTRACT:
An apparatus for use in the generation of impulses, comprising a stepped piston assembly having a large piston and a small piston mechanically linked to one another and reciprocable between forward and rearward positions with the large piston being located in a large cylinder and having a large rearward face in communication with a reservoir for compressed fluid, and with the small piston having a small forward face for delivering the impulse; wherein the stepped piston assembly has an auxiliary piston located between the large piston and the small piston which auxiliary piston is mechanically linked to the large piston and which is reciprocable in an auxiliary cylinder, and wherein there is provided a valve through which fluid can flow from the volume enclosed by the large cylinder forward of the large piston into the volume enclosed by the auxiliary cylinder rearward of the auxiliary piston.
The invention makes possible the provision of a pressure intensifier in which the valve controlling the rapid forward movement of the piston can be situated within the casing of the pressure intensifier, so avoiding the need for large external dump valves and associated pipework.
REFERENCES:
patent: 2979903 (1961-04-01), Beck
patent: 3190077 (1965-06-01), Scholin
patent: 3257810 (1966-06-01), Hanni
patent: 3424154 (1969-01-01), Kinsley
patent: 3425219 (1969-02-01), Oliver
patent: 3531065 (1970-09-01), Brown
Health and Safety Executive
Hershkovitz Abraham
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