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:
Feb. 02, 1999
Filed:
Apr. 04, 1997
Fumitomo Yokoyama, Nishikamo-gun, Aichi-ken, 470-02, JP;
Kazuhisa Ozaki, Nukata-gun, Aichi-ken 444-01, JP;
Masahiko Ando, Okazaki-shi, Aichi-ken, 444-12, JP;
Akira Fukatsu, Anjo-shi, Aichi-ken, 444-12, JP;
Makoto Hijikata, Toyota-shi, Aichi-ken, 473, JP;
Toshiyuki Mae, Anjo-shi, Aichi-ken, 446, JP;
Yoshiaki Hirota, Okazaki-shi, Aichi-ken, 444-02, JP;
Yasuo Hojo, Nagoya-shi, Aichi-ken, 467, JP;
Nobuaki Takahashi, Toyota-shi, Aichi-ken, 470-03, JP;
Kagenori Fukumura, Toyota-shi, Aichi-ken, 471, JP;
Yasunari Nakamura, Nagoya-shi, Aichi-ken, 464, JP;
Other;
Abstract
An oil temperature responsive hydraulic control system for an automatic transmission includes a hydraulic servo for applying/releasing a frictional engagement element; a pressure regulator valve for regulating oil pressure fed to the hydraulic servo; and a signal pressure oil passage for applying a pressure regulating signal pressure to the pressure regulator valve. A control valve is arranged in the signal pressure oil passage for changing the effective diameter of the signal pressure oil passage responsive to change in oil temperature.