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:
Jan. 23, 2019
Applicant:
Mazda Motor Corporation, Aki-gun, JP;
Inventors:
Assignee:
Mazda Motor Corporation, Hiroshima, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16D 25/0638 (2006.01); F16H 63/30 (2006.01); F16D 55/40 (2006.01); F16H 57/04 (2010.01); F16H 3/66 (2006.01);
U.S. Cl.
CPC ...
F16D 25/0638 (2013.01); F16H 63/3026 (2013.01); F16D 55/40 (2013.01); F16H 3/663 (2013.01); F16H 57/0473 (2013.01); F16H 57/0484 (2013.01); F16H 2063/303 (2013.01); F16H 2200/006 (2013.01); F16H 2200/2012 (2013.01); F16H 2200/2043 (2013.01);
Abstract
An automatic transmission is provided, which includes a friction engaging element. The friction engaging element includes a plurality of friction plates disposed inside a transmission case, a piston configured to cause the plurality of friction plates to be engaged with each other, and a spring configured to bias the piston. The spring includes a first spring and a second spring with a longer free length than the first spring, and the first spring and the second spring are aligned in circumferential directions of the transmission case.