The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 22, 2011
Filed:
Mar. 05, 2009
Masahiko Watanabe, Yokohama, JP;
Masahiko Watanabe, Yokohama, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A valve timing control apparatus for an internal combustion engine, including a drive rotary member that is rotated by the crankshaft, a driven rotary member that transmits rotational force input from the drive rotary member, to the camshaft, and an electromagnetic mechanism that acts to vary a relative rotational phase between the drive rotary member and the driven rotary member. After an ignition switch is turned off and the engine is stopped, the electromagnetic mechanism acts to produce detent torque and hold the relative rotational phase between the drive rotary member and the driven rotary member in a predetermined phase position by the detent torque.