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:
Jul. 11, 2006
Filed:
Aug. 09, 2004
Tomoaki Ishikawa, Saitama, JP;
Shigeji Nakano, Saitama, JP;
Kazunori Fujishima, Saitama, JP;
Masaaki Yamaguchi, Saitama, JP;
Tsuyoshi Fujita, Saitama, JP;
Takao Ueno, Saitama, JP;
Tomoaki Ishikawa, Saitama, JP;
Shigeji Nakano, Saitama, JP;
Kazunori Fujishima, Saitama, JP;
Masaaki Yamaguchi, Saitama, JP;
Tsuyoshi Fujita, Saitama, JP;
Takao Ueno, Saitama, JP;
Honda Motor Co., Ltd., Tokyo, JP;
Abstract
A hydraulic controller of a power transmission device is equipped with a transmission for changing a rotation speed of motor power input from a motor and outputting the motor power; a forward/backward change-over mechanism provided between an input shaft, where the motor power of the motor is input and the transmission; and a torque converter having a direct coupling mechanism for transmitting the motor power between an output shaft and the input shaft of the motor; a solenoid valve for adjusting an original pressure and generating a control pressure; and a change-over element for changing over a hydraulic pressure supplied to the forward/backward change-over mechanism so as to become a low pressure during deceleration driving when the direct coupling mechanism is controlled by the solenoid valve, wherein any one of engagement states of the forward/backward change-over mechanism and the direct coupling mechanism is controlled by the control pressure.