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:
Aug. 01, 1988
Applicant:
Inventors:
Yasuo Kita, Kyoto, JP;
Yoshihiko Nakakoji, Kyoto, JP;
Assignee:
Shimadzu Corporation, Kyoto, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16H / ;
U.S. Cl.
CPC ...
74687 ; 74720 ;
Abstract
A stepless speed reducer includes the mechanical power transmission lines for high speed and low speed, the two lines being selectively concluded to effect power transmission. When the working speed ratio comes near a predetermined critical speed ratio, the operation is maintained at the critical speed ratio while the pump motor for low speed is kept inoperative and no pressure difference exists between the transmission circuits, thereby transmitting power through the line for high speed.