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. 02, 1987
Filed:
Jan. 22, 1985
Mitsuhiko Okada, Toyota, JP;
Hiroshi Itoh, Toyota, JP;
Nobuyuki Kato, Toyota, JP;
Mitsuru Takada, Toyota, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota, JP;
Abstract
A continuously variable transmission (CVT) has input and output pulleys interconnected by a V-belt. The output pulley is actuated by a line pressure. A throttle pressure is increased as the position of an intake throttle valve arranged in an intake path is increased. A transmission-ratio pressure is decreased as the position of the intake throttle valve is increased. The transmission-ratio pressure is decreased in the region of smaller openings of the intake throttle valve more gently than in the region of larger ones. The line pressure is produced in relation to the throttle pressure and the transmission-ratio pressure.