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:
Oct. 11, 1988
Filed:
Oct. 21, 1986
Applicant:
Inventors:
Yasuo Kita, Kyoto, JP;
Hiroyuki Fujii, Uji, JP;
Assignee:
Shimadzu Corporation, Kyoto, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16H / ;
U.S. Cl.
CPC ...
74687 ; 74866 ;
Abstract
A hydromechanical transmission that can be used as an efficient continuously variable transmission has a pair of speed sensors for detecting the rotational speeds at the transmission ends of two mechanical transfer lines formed in the transmission, a pair of pressure sensors for detecting the pressures at two positions, an actuator, and a computer. The computer controls the actuator and two clutches in such a way that the system is switched from a low-speed mode to a high-speed mode and vice versa without producing a shock.