Gear pump with pressure relief groove

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United States of America Patent

PATENT NO 8512018
APP PUB NO 20080166254A1
SERIAL NO

11906115

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Abstract

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A hydraulic device has an inlet side and an outlet side and includes two meshing cogwheels. Each cogwheel has external oblique teeth and is arranged between an inlet side and an outlet side. At least one control groove is provided on an end side of the cogwheels. The control groove periodically produces a pressure equalizing connection during the rotation of the cogwheels.

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Patent Owner(s)

Patent OwnerAddress
TRW AUTOMOTIVE GMBHINDUSTRIESTRASSE 20 ALFDORF 73553

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Floerchinger, Juergen Erkrath, DE 2 9
Hoppe, Stephan Willich, DE 2 9
Jordan, Martin Duesseldorf, DE 38 251

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