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:
Mar. 20, 1990
Filed:
May. 31, 1988
Yoshihiko Morimoto, Mitaka, JP;
Fuji Jukogyo Kabushiki Kaisha, Tokyo, JP;
Abstract
A continuously variable belt drive transmission has a torque converter with a lockup clutch. Transmission ratio of the transmission starts to change in accordance with driving conditions of a vehicle, and the lockup clutch is engaged in accordance with driving conditions of the vehicle. A start signal for starting of the changing of the transmission ratio is produced in accordance with driving conditions, and a lockup signal for engaging of the lockup clutch is produced in accordance with driving conditions. In response to the start signal and to the lockup signal the change of the transmission ratio and engaging of the lockup clutch are performed at the same time.