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. 05, 2012
Filed:
Jan. 11, 2008
Applicant:
Yoshinobu Soga, Toyota, JP;
Inventor:
Yoshinobu Soga, Toyota, JP;
Assignee:
Toyota Jidosha Kabushiki Kaisha, Toyota, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16D 33/16 (2006.01);
U.S. Cl.
CPC ...
Abstract
A lock-up control valve () selectively applies secondary pressure P (L/U) to the apply side hydraulic chamber of a torque converter () or to the release side hydraulic chamber thereof. The lock-up control valve () has a valve element (), a first port (), a second port (), a third port (), a fourth port (), and a drain port (). The valve element () has a first land () and a second land (). The diameter of the second land () is larger than that of the first land ().