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. 04, 1989
Filed:
Sep. 28, 1987
Hiromi Hasegawa, Obu, JP;
Toshiaki Ishiguro, Nagoya, JP;
Aisin Seiki Kabushiki Kaisha, Kariya, JP;
Abstract
If a vehicle is at rest after it has been detected that the shift position of the vehicle transmission has been shifted to neutral, hydraulic pressure is introduced to a brake in the transmission gear train that is for establishing the first speed state. The introduction of hydraulic pressure to the brake causes the brake to engage in advance of an actual shift to first speed. As a result, when the shift position is shifted out of the neutral range, the first speed state is quickly established, thereby shortening the neutral-to-drive shift time lag when the vehicle is at rest. If the vehicle is traveling after the shift to neutral has been detected, hydraulic pressure is exhausted from the brake to disengage the same, thereby preventing high-speed rotation of sun gears and clutch disk in the gear train due to transmission of rotation from the output side of the automatic transmission.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile