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. 06, 2001
Filed:
Feb. 26, 2001
Masafumi Sugawara, Tokyo, JP;
Mutsuo Sekiya, Tokyo, JP;
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
The present invention relates to a lock mechanism for a valve timing regulation device which regulates the timing of the opening and closing of engine valves, the lock mechanism locks or releases a first rotating body and a second rotating body in response to the operational condition of an engine. The lock mechanism includes a radial groove,provided in either the first rotating body,or the second rotating body,and extending in a radial direction of the rotating body. A locking member,is slidably inserted into the radial groove,, and the locking member is urged towards a center of the rotating body by an urging means,. An oil pressure is applied to the locking member,in a direction opposite to the urging direction. In such a way, it is possible to assemble the locking member,onto an end face in an axial direction other than a vane,or a shoe,in either the first rotating body or the second rotating body, as a result, each vane,or each shoe,can be formed with approximately the same circumferential length. Thus, it is possible to expand the angular range to be regulated by the valve timing regulation device and to reduce the degree of unbalance in the device by a large amount.