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.

Date of Patent:
Jun. 15, 1982

Filed:

Mar. 14, 1979
Applicant:
Inventors:

Kazuyoshi Iwanaga, Yokohama, JP;

Kazuhiko Sugano, Tokyo, JP;

Kunio Ohtsuka, Yokohama, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B60K / ;
U.S. Cl.
CPC ...
74868 ; 74861 ; 74863 ; 74864 ; 74869 ;
Abstract

In an automatic power transmission for an automotive vehicle, the hydraulic control system has incorporated therein a gearshift timing control arrangement for controlling the overlap and neutral intervals between the timings at which frictional units contributive to predetermined forward drive gear ratios are to be made operative and inoperative, the control being effected depending upon the road speeds of a vehicle.


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