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. 13, 2018
Filed:
Jul. 18, 2016
Toyota Jidosha Kabushiki Kaisha, Toyota-shi, Aichi, JP;
Shuji Moriyama, Nagakute, JP;
Yoshinobu Soga, Toyota, JP;
Yoshihiro Mizuno, Nagoya, JP;
Hiromitsu Nitani, Nagakute, JP;
Takafumi Inagaki, Toyota, JP;
Kenichi Tsuchida, Anjo, JP;
Toshiaki Hayashi, Anjo, JP;
Yuta Seriguchi, Anjo, JP;
Masafumi Takasu, Anjo, JP;
Yoichiro Kimura, Anjo, JP;
Masashi Takizawa, Anjo, JP;
TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota, JP;
Abstract
A hydraulic control device has: a modulator valve using oil pressure from a hydraulic source for adjusting a modulator pressure; driving and driven-side hydraulic actuator control valves controlling hydraulic oil from the source to driving and driven-side hydraulic actuators; a driving-side control oil pressure adjusting electromagnetic valve using the modulator pressure for outputting a control oil pressure controlling the driving-side control valve; and a driven-side control oil pressure adjusting electromagnetic valve for outputting a control oil pressure controlling the driven-side control valve, the hydraulic control device including a failsafe valve switched from a normal to a failure position based on a failure disabling electric control for the driving-side and driven-side electromagnetic valves, the modulator valve making the modulator pressure lower than a value at the normal position based on an output switching pressure generated due to switching the failsafe valve from the normal to the failure position.