Instant return-stroke differential temperature engine

Details Instant return-stroke differential temperature engine Instant return-stroke differential temperature engine

1977-03-21

1980-01-01

Ostrager, Allen M.

Power plants

Motor operated by expansion and/or contraction of a unit of...

Mass is a liquid

60641, F03G 706

Patent

active

041809823

ABSTRACT:
The invention consists of a differential temperature engine in which the return stroke is achieved independently of the contraction of the vapor which induced the initial movement of the moving member. The engine consists of a relatively cold and a relatively warm chamber which are sealed from the outside environment, and contain a low boiling point fluid. One end of a cylinder communicates with the vapors in the relatively warm chamber while the opposing end of the cylinder communicates with the vapors in the relatively cold chamber. When there is no communication between the cold and warm chambers a vapor pressure differential upon the opposing ends of a piston within the cylinder causes the piston to move towards the cold chamber. The return stroke of the piston is induced by equalization of the pressures upon the two opposing ends of the piston. This is obtained either by the establishment of a communication between the cold and the warm chamber, or by establishment of a communication of the two opposite ends of the cylinder with the warm chamber.

REFERENCES:
patent: 2105196 (1938-01-01), McCauley
patent: 2578992 (1951-12-01), Dickey
patent: 3132472 (1964-05-01), Schweitzer
patent: 3728858 (1973-04-01), Sorensen
patent: 3834165 (1974-09-01), Arff
patent: 3846984 (1974-11-01), Siegel

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