Power plants – Pressure fluid source and motor – Input pump and rotary output motor system having...
Patent
1975-03-12
1976-08-24
Ostrager, Allen M.
Power plants
Pressure fluid source and motor
Input pump and rotary output motor system having...
417273, F04D 4900
Patent
active
039759105
ABSTRACT:
A rotary input shaft is provided having an axially shiftable cam mounted thereon including circumferentially spaced and axially tapering cam lobes. A pair of reciprocating piston oil pumps are provided and include piston actuating followers engaged with the cam and operable thereby to pump oil through the pumps. An oil turbine is also provided and oil lines extend to and from the turbine from the pumps whereby operation of the pumps will cause oil to be pumped through the turbine which includes a rotary output shaft. By axially shifting the cam on the rotary input shaft the volume of oil pumped by the pumps during each cycle of operation thereof is varied whereby the input of oil to the turbine is similarly varied. The hydraulic system connecting the pumps to the turbine includes oil reservoir means from which oil may be admitted into the working portion of the system and into which oil from the working portion of the system may be withdrawn. Further, structure is provided for expressing oil from the reservoir in response to shifting of the cam to increase the discharge from the pumps and to withdraw oil from the working portion of the hydraulic system into the reservoir in response to shifting of the cam to reduce the output of the pumps. In this manner, even though the amount of oil pumped into and out of the pumps during each cycle of operation thereof varies with the axial shifting of the cam, a closed hydraulic system may be maintained.
REFERENCES:
patent: 1477300 (1923-12-01), Thrift
patent: 1785736 (1930-12-01), Hess
patent: 2263786 (1941-11-01), Rumpp
patent: 3161137 (1964-12-01), Thoma et al.
patent: 3451218 (1969-06-01), Grant
Jacobson Harvey B.
O#Brien Clarence A.
Ostrager Allen M.
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