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. 15, 2020
Filed:
Mar. 10, 2017
Mazda Motor Corporation, Hiroshima, JP;
Takeyoshi Iwagami, Aki-gun, JP;
Masahiro Koizumi, Hiroshima, JP;
Shota Kabasawa, Nagaoka, JP;
Ikuma Takahashi, Hiroshima, JP;
Kenya Ishii, Hiroshima, JP;
MAZDA MOTOR CORPORATION, Hiroshima, JP;
Abstract
An accessory drive system for an engineincludes: a drive shaft (a crankshaft); a driven shaft (an oil pump drive shaft); an endless transmission member (a drive chain); a first tensioner disposed on a slack side of the endless transmission member (a first hydraulic tensioner); and a second tensioner disposed on a tight side of the endless transmission member (a second hydraulic tensioner). The second tensioner has a damping function to damp pushing force applied to the second tensioner by the endless transmission member in a direction opposite to a biasing direction.