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. 22, 2010
Filed:
Jul. 16, 2004
Yuji Iwase, Susono, JP;
Masami Sugaya, Susono, JP;
Hiroyuki Nishizawa, Tajimi, JP;
Kisaburo Hayakawa, Nagoya, JP;
Masataka Osawa, Nagoya, JP;
Yuji Iwase, Susono, JP;
Masami Sugaya, Susono, JP;
Hiroyuki Nishizawa, Tajimi, JP;
Kisaburo Hayakawa, Nagoya, JP;
Masataka Osawa, Nagoya, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota-shi, JP;
Abstract
A hydraulic control apparatus includes two oil flow control valves () each provided with a supply control portion () for controlling an oil supply from a pressurized oil source, and a discharge control portion () for controlling connection with a discharge passage. One of those oil flow control valves supplies/discharges oil to/from one of hydraulic chambers () that are oppositely formed in a hydraulic servo mechanism. An operation direction of the hydraulic servo mechanism is performed by operating one of the oil flow control valves. The other operation direction of the hydraulic servo mechanism is performed by operating the other oil flow control valve.