Oil pump having pivoting vanes

Details Oil pump having pivoting vanes Oil pump having pivoting vanes

1989-09-20

1991-02-05

Vrablik, John J.

Rotary expansible chamber devices

Moving cylinder

Rotating

418268, F04C 244

Patent

active

049900749

ABSTRACT:
The oil pump includes an air tight housing within which is rotatably fitted a circular ring and a driven shaft rotatably mounted in the housing, and within the ring, for rotation about an axis eccentric from, but substantially parallel to, the ring axis. An inner rotor in the circular ring is mounted to the driving shaft for rotation therewith and a plurality of circumferentially spaced vanes each have an inner end pivotally mounted to the rotor. Each of the vanes is oriented with respect to a radial direction such that the vanes are centrifugally swung radially outward and into contact with the ring in response to rotation of the driving shaft and the inner rotor, thereby providing airtight pump chambers between adjacent ones of the vanes. Intake and discharge ports are respectively communicated with the pump chambers at circumferential positions thereof where the pump chambers are expanding and contracting, so that oil from the intake port is pumped by the pump chambers to the discharge port.

REFERENCES:
patent: 1818430 (1931-08-01), Ricardo
patent: 2841090 (1958-07-01), Nuerwell

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