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, 1993
Filed:
Mar. 30, 1992
Applicant:
Inventors:
Assignee:
Mazda Motor Corporation, Hiroshima, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16H / ;
U.S. Cl.
CPC ...
475 66 ; 475 70 ;
Abstract
A hydraulically operated stepless transmission has a first power flow path established so as to include a torque converter and a reverse and reduction gear and a second power flow path established so as to include a stepless transmission gear. The first and second flow paths are selectively available. A hydraulic control circuit, including at least one oil pump, causes a decrease in quantity of a lubrication oil delivered to the stepless transmission gear while the first power flow path is established, and causes a decrease in quantity of a working oil delivered to the torque converter while the second power flow path is established.