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:
Oct. 28, 1997
Filed:
Jan. 09, 1997
Hiroshi Sekiguchi, Fuji, JP;
Jatco Corporation, , JP;
Abstract
A clutch device for automatic transmission comprises a rotatable high clutch drum, a ring-like piston movably fit in the high clutch drum in the axial direction, and a drift-on ball which is inserted in a staged through-hole penetrating the piston in its axial direction and is able to interrupt and communicate with the through-hole by movements thereof in the axial direction. An oil supplying and discharging port which is able to supply oil into an oil chamber partitioned by the high clutch drum and piston is formed at inner circumference of the high clutch drum. A groove which causes the oil supplying and discharging port of the high clutch drum and the through-hole to communicate with each other through a space between each inner circumference of the piston and the high clutch drum is formed at the oil chamber side of the piston.