Power plants – Pressure fluid source and motor
Patent
1976-10-22
1977-07-19
Dority, Jr., Carroll B.
Power plants
Pressure fluid source and motor
60407, 123 1R, F16D 3102
Patent
active
040360164
ABSTRACT:
A reciprocating engine utilizes the pressure difference between a partial vacuum and the ambient atmospheric pressure as a source of power. The engine includes an engine block defining a plurality of cylinders each having a piston operating within it. The first or outer face of each piston is maintained substantially at atmospheric pressure while the second or inner face of each piston is maintained at less than ambient atmospheric pressure during the power stroke of the piston by connection to a flame-free vacuum source. Once each piston has reached the end of this power stroke due to the pressure difference across the piston, a limited amount of air is permitted to enter the respective cylinder adjacent the second or inner face of the piston to thereby return the second face of the piston to substantially atmospheric pressure. With the pressure on both faces of the piston being substantially equalized, the piston is permitted to return to the beginning of its power stroke by rotation of an output or crankshaft which is being rotated by action of a different piston. Upon reaching the beginning of its power stroke, the air inlet is cut off and the flame-free vacuum means again applied to return the second face of the piston to a pressure less than the ambient atmospheric pressure to thereby re-establish the pressure difference across the piston, resulting in the power stroke of the piston. Output means including an output shaft are operatively connected to the pistons to translate the reciprocating motion of the pistons into rotary motion of the output shaft. The output shaft carries a flywheel and the inertial effects of the flywheel are utilized to return each piston from the end of its power stroke to the beginning of its power stroke.
REFERENCES:
patent: 124520 (1872-03-01), Tuttle
patent: 195585 (1877-09-01), Dieckmann
patent: 221961 (1879-11-01), Goldmann
patent: 236258 (1881-01-01), Rauel
patent: 439222 (1890-10-01), Widerman
patent: 1112956 (1914-10-01), White et al.
patent: 2054570 (1936-09-01), Burt
patent: 2484183 (1949-10-01), Paulson
patent: 3925986 (1975-12-01), Barwick
Dority Jr. Carroll B.
Friederichs Norman P.
Lazarus Ira S.
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