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:
Apr. 18, 1989
Filed:
Dec. 17, 1987
Shunichi Kawai, Nagoya, JP;
Aisin Seiki Kabushiki Kaisha, Kariya, JP;
Abstract
A shift actuator in an automatic shift mechanism of a geared transmission for an automotive vehicle includes a shift rod mounted in a casing so as to slide freely in mutually opposing directions and coupled to a fork shaft to acutate the same by sliding in either of the directions, thereby effecting a gear shift, actuating means attached to the shift rod for urging the shift rod in either of the directions by hydraulic pressure switched by a changeover valve, and a CPU for switching the changeover valve. Hydraulic pressure is switchingly applied to the actuating means by the changeover valve in response to a command from the CPU, thereby urging the shift member coupled to the fork shaft in the shift direction intended. As a result, when synchronization with the rotational speed of the engine is achieved, the fork shaft automatically slips into in a desired shift postion.