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:
Jan. 15, 1991
Filed:
Jan. 27, 1989
Applicant:
Inventors:
Assignee:
Toyota Jidosha Kabushiki Kaisha, Aichi, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B60K / ;
U.S. Cl.
CPC ...
74868 ; 74866 ; 74878 ;
Abstract
A hydraulic pressure control device for an automatic transmission for a vehicle, including a spool type hydraulic pressure control valve for selectively prevent setting up of the reverse stage when a manual shift valve is set to the reverse range while the vehicle is traveling forward, wherein the spool element of the hydraulic pressure control valve is positively shifted to a position for not preventing the setting up of the reverse stage by a hydraulic pressure available when the manual shift valve is set to the forward range.