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. 30, 2003
Filed:
Jan. 18, 2002
Kazuhiro Takatori, Yokohama, JP;
Osamu Sato, Kanagawa, JP;
Tatsuya Imamura, Kanagawa, JP;
Yasushi Fujita, Kanagawa, JP;
Kazuo Tomioka, Shizuoka, JP;
Kazuhito Sano, Shizuoka, JP;
Jatco LTD, Fuji, JP;
Abstract
A hydraulic control system controls a hydraulic pressure as a standby pressure in a period from an engagement start point at which an engagement instruction for engaging a friction element is started to an abutment start point at which an abutment between an input element and an output element is started. The hydraulic pressure supplied to at least one friction element is so increased as to switch the friction element from a disengagement state to an engagement state, thus transmitting a revolution of the input element of the friction element to the output element of the friction element. The hydraulic control system includes: a speed sensor for sensing a speed of the friction element; and a standby pressure increase section for increasing the standby pressure in accordance with the speed of the friction element sensed with the speed sensor.