US Patent 7789056 Sleeve and cylinder head cover

Patent 7789056 was granted and assigned to Toyota on September, 2010 by the United States Patent and Trademark Office.

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Is a

Patent

Patent attributes

Current Assignee

Toyota

Patent Jurisdiction

United States Patent and Trademark Office

Patent Number

77890560

Patent Inventor Names

Kazuya Yoshijima0

Naohiro Hasegawa0

Date of Patent

September 7, 2010

Patent Application Number

117941410

Date Filed

January 16, 2006

Patent Primary Examiner

‌

Ching Chang

Patent abstract

A sleeve allows insertion of an oil control valve, and is used by being inserted to an installation hole provided in a cylinder head cover. An outer surface of a sleeve main body of the sleeve is covered by a rubber-like elastic body layer. The rubber-like elastic body layer has a protrusion provided in the periphery of an oil hole provided in the sleeve main body in such a manner as to surround the oil hole. In accordance with the sleeve, it is possible to install the oil control valve to the cylinder head cover at a high oil tightness.