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:
Sep. 10, 2013
Filed:
Apr. 14, 2009
Shuji Moriyama, Susono, JP;
Akira Murakami, Gotenba, JP;
Keisuke Ichige, Aichi-gun, JP;
Hiroyuki Nishizawa, Tajimi, JP;
Masanori Iritani, Nagoya, JP;
Hideyuki Suzuki, Nisshin, JP;
Shuji Moriyama, Susono, JP;
Akira Murakami, Gotenba, JP;
Keisuke Ichige, Aichi-gun, JP;
Hiroyuki Nishizawa, Tajimi, JP;
Masanori Iritani, Nagoya, JP;
Hideyuki Suzuki, Nisshin, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota-shi, JP;
Abstract
A switching apparatus is provided in a hydraulic control apparatus having a fluid transmission apparatus; a lockup clutch; a switching valve that controls engagement of the lockup clutch; and a control oil pressure generation apparatus that pressurizes oil and outputs a control oil pressure to control activation of the switching valve. The switching apparatus executes a control to warm the oil input into the control oil pressure generation apparatus if the temperature of the oil is below a predetermined temperature and prohibits execution of the control to warm the oil input into the control oil pressure generation apparatus if the temperature of the oil equals or exceeds the predetermined temperature.