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. 23, 1990
Filed:
Mar. 31, 1989
Applicant:
Inventors:
Keiju Abo, Yokosuka, JP;
Toshikazu Oshidari, Yokohama, JP;
Assignee:
Nissan Motor Co., Ltd., Yokohama, JP;
Primary Examiner:
Int. Cl.
CPC ...
F16H / ;
U.S. Cl.
CPC ...
474 28 ; 474 18 ;
Abstract
A control system for a transmission is disclosed. The control system includes a high clutch and a low clutch. When the high clutch is engaged, the torque transmission path through a V-belt type continuously variable transmission mechanism is established, while when the low clutch is engaged, the torque transmission path through a gearing mechanism is established. The same hydraulic fluid pressure as prevailing in a driver pulley cylinder chamber is admitted to the high clutch directly or via a suitable selector valve (a neutral valve).