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:
Dec. 04, 2007
Filed:
Oct. 31, 2003
Ichiro Tokuda, Osaka, JP;
Kenji Tsubota, Osaka, JP;
Michio Yamaji, Osaka, JP;
Tsutomu Shinohara, Osaka, JP;
Ichiro Tokuda, Osaka, JP;
Kenji Tsubota, Osaka, JP;
Michio Yamaji, Osaka, JP;
Tsutomu Shinohara, Osaka, JP;
Fujikin Incorporated, Osaka-shi, JP;
Abstract
Force amplifying meanscomprises a tapered memberextending vertically downward from the lower end of an operating rod, a disk memberprovided at the upper end of a valve stem, and front and rear pivotal membersarranged between the two membersand opposed to each other with the tapered memberpositioned therebetween, the pivotal membersbeing pivotally movable about respective pivots. Each of the pivotal membershas a plate body, an upper contact faceformed on an upper portion of the body and in bearing contact with a tapered face of the tapered member, and a lower contact faceformed on a lower portion of the body and bearing on the upper surface of the disk member. The lower contact faceof each pivotal member is in the form of a circular-arc cam face centered about a center line positioned away from the axis of the pivot