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:
May. 27, 2003
Filed:
Jan. 05, 2001
Hiroyuki Hirano, Kanagawa, JP;
Kazuhiro Yamada, Miura, JP;
Yasushi Narita, Yokohama, JP;
Tatsuya Nagato, Yokosuka, JP;
Hiromasa Sakai, Yokosuka, JP;
Motoharu Nishio, Yokohama, JP;
Hiroaki Kuramoto, Yokosuka, JP;
Hirofumi Shimizu, Yokosuka, JP;
Masaki Nakano, Yokohama, JP;
Eio Sagara, Yokosuka, JP;
Masayoshi Kimura, Yokosuka, JP;
Nissan Motor Co., Ltd., Yokohama, JP;
Abstract
An infinite Speed ratio continuously variable transmission comprises a power recirculation mode clutch ( ) and direct mode clutch ( ). At least one of the power recirculation mode clutch ( ) and direct mode clutch ( ) comprises an electromagnetic two-way clutch. The electromagnetic two-way clutch maintains the engaged state during excitation and can transmit drive force from both the drive side and non-drive side. On the other hand, when there is a change-over from the energized state to the non-energized state, a one-way clutch state is obtained wherein drive force is permitted only in the transmission direction of drive force in the instant of the change-over to non-excitation. When a drive force is input in the reverse direction to the drive force transmitted in the one-way clutch state, the one-way clutch state is disengaged, and the disengaged state of the clutch is maintained until subsequent re-excitation. Therefore, change-over of the clutch at the rotation synchronous point RSP where the power recirculation mode and direct mode are changed over, can be performed rapidly.