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. 16, 1976
Filed:
Feb. 19, 1975
Applicant:
Inventors:
Toshimitsu Sakai, Toyota, JA;
Tadashi Saito, Toyota, JA;
Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B60K / ;
U.S. Cl.
CPC ...
74866 ; 74869 ;
Abstract
Controls for automatic transmissions of the four-forward-speed type having two shift valves equipped with solenoid valves in a hydraulic system, and a manual valve for changing over the fluid passages or lines in the reverse and forward speed regions. The automatically controlled shift positions in the first to fourth speed ranges in the forward speed region and the shift positions to be assumed by restricting the shift range by manual operation are attained by means of the two solenoid valves in response to signals from an electric control system.