Variable displacement lubricant pump having a radial inlet or outlet opening axially between at least two bushing rings

Number of patents in Portfolio can not be more than 2000

United States of America

PATENT NO 11982272
APP PUB NO 20220307497A1
SERIAL NO

17613092

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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A variable displacement lubricant pump for providing a pressurized lubricant for a motor vehicle. The pump includes a pump rotor which rotates about a rotor axis and a control ring which is shiftable. The pump rotor includes a pump rotor shaft, a rotor body having vane slits, and pump vanes which are arranged in and which axially slide in the vane slits. The control ring can be actuated to set an eccentricity of the control ring to define a volumetric pump performance. The control ring defines a pump chamber which is separated by the pump vanes into pumping compartments. The control ring includes a control ring main body, bushing rings which are arranged separately at a radial inside of the control ring main body, and a radial inlet opening and/or a radial outlet opening. The radial inlet opening and/or the radial outlet opening is/are arranged axially between the bushing rings.

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First Claim

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Patent Owner(s)

Patent OwnerAddress
PIERBURG PUMP TECHNOLOGY GMBH41460 NEUSS

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Cuneo, Carmine Pisa, IT 11 22
Lazzerini, Massimiliano Cecina, IT 10 17
Malvasi, Alessandro Leghorn, IT 16 35

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