Rotary expansible chamber devices – Heat exchange or non-working fluid lubricating or sealing – Non-working fluid passage in inner working or reacting member
Patent
1980-10-17
1983-07-12
Vrablik, John J.
Rotary expansible chamber devices
Heat exchange or non-working fluid lubricating or sealing
Non-working fluid passage in inner working or reacting member
418 99, 418167, 418186, F04C 1810, F04C 2902
Patent
active
043927971
ABSTRACT:
A device for lubricating a rotary piston air pump driven by an engine penetrated by lubricating oil return conduits. The device includes a rotary housing including a casing and two side walls and rotatably mounted on a stationary axle having an eccentric thereon. The axle penetrates the housing perpendicular with respect to the side walls and receives on its eccentric a rotating piston, which is in camming engagement with the casing and limits volume changing operating chambers. The surface of the eccentric on which the piston is mounted is provided with a recess in communication with a suction conduit and a recess in communication with a discharge conduit. The piston has control openings for successively communicating the recesses with the operating chambers during rotary movement of the piston. An oil bore discharges on the surface of the eccentric on which the piston is mounted in a rotating direction of the piston about 15 degrees-30 degrees after the position with the least distance to the center of the axle and laterally offset with respect to the control openings of the piston, whereby the oil bore communicates with an oil conduit of the engine.
REFERENCES:
patent: 2140966 (1938-12-01), Nichols
Audi NSU Auto Union Aktiengesellschaft
Vrablik John J.
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