Double/triple-layer valve guide

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 9988951
APP PUB NO 20160312668A1
SERIAL NO

15104512

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Abstract

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The invention relates to a valve guide manufactured by a powder-metallurgical process for combustion engines, said guide comprising a central section, a cam-side end piece, and a duct-side end piece, wherein the central section consists of a first material and the duct-side end piece of a second material, with the second material having a hardness in excess of 70 HRB and the first material having a hardness that is by at least 10 HRB lower than that of the second material.

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Patent Owner(s)

Patent OwnerAddress
BLEISTAHL-PRODUKTIONS GMBH & CO KGWALTHER

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Blecking, Christian Witten, DE 3 9
Emde, Dirk Ennepetal, DE 4 17
Hunsche, Ingwar Bochum, DE 3 9
Kohler, Ekkehard Wetter/Ruhr, DE 7 32

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