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:
May. 24, 2016
Filed:
Aug. 29, 2014
Mazda Motor Corporation, Aki-gun, Hiroshima, JP;
Koichi Hirata, Hiroshima, JP;
Yasunori Kanda, Hiroshima, JP;
Kouji Kubo, Hiroshima, JP;
Mitsutaka Yamaya, Aki-gun, JP;
Shuji Takuma, Hiroshima, JP;
Tatsuya Kobayashi, Hiroshima, JP;
Takeshi Motomuro, Hiroshima, JP;
Mazda Motor Corporation, Hiroshima, JP;
Abstract
A piston pin structure for an engine is provided, which suppresses integral resonance of a piston, a piston pin, and a smaller end part of a connecting rod with respect to a larger end part of the connecting rod on the combustion stroke, as well as suppresses an increase of noise on other strokes, and restricts the fixed dynamic absorber inside the piston pin from coming off and ensures a coming-off function. The piston pin structure may include a dynamic absorber including a fixed part fixed to a piston pin, a movable part extending in the axial direction of the piston pin, and a supporting part for swingably supporting the movable part with respect to the fixed part. A restriction mechanism for mechanically restricting the movement of the dynamic absorber in the axial direction may also be included.