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:
Jun. 23, 2020
Filed:
Jan. 24, 2019
Mazda Motor Corporation, Aki-gun, Hiroshima, JP;
Mazda Motor Corporation, Aki-gun, Hiroshima, JP;
Abstract
An automatic transmission is provided, which includes a brake and an oil channel forming member. The brake includes an inner stationary member coupled to a transmission case, an outer rotary member, a plurality of friction plates, a piston configured to cause the friction plates to be engaged, and a hydraulic chamber for engagement. The oil channel forming member forms a supply oil channel for engagement. The piston includes a pressing part, a hydraulic chamber forming part, and a coupling part. The oil channel forming member includes a bonding part, a hydraulic chamber forming part, and a coupling part. The bonding part and the coupling part of the oil channel forming member are disposed in a cutoff part formed in the coupling part of the piston, and are disposed to overlap with the coupling part of the piston in circumferential directions.