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, 1992
Filed:
Nov. 13, 1990
Applicant:
Inventors:
Shigeki Goto, Kariya, JP;
Masato Shimei, Midori, JP;
Assignee:
Aisin Seiki Kabushiki Kaisha, Kariya, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B60K / ; B60K / ;
U.S. Cl.
CPC ...
74878 ; 74866 ; 74869 ; 3644241 ;
Abstract
A shift control device for an automatic transmission comprises a shift valve, a solenoid valve connected to the shift valve, a shift timing valve also connected to the shift valve, a cut-off device connected to the solenoid valve and the shift timing valve, and a timing solenoid valve connected to the cut-off device so as to avoid the problem of shift shock which occurs when the timing solenoid valve is in an abnormal operating condition.