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. 04, 2003
Filed:
May. 21, 2001
Applicant:
Inventors:
Shinji Miyata, Kanagawa, JP;
Hiroyuki Itoh, Kanagawa, JP;
Assignee:
NSK Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16H 3/702 ;
U.S. Cl.
CPC ...
F16H 3/702 ;
Abstract
Between a water pump and an electric motor there is interposed a toroidal-type continuously variable transmission By changing the gear change ratio of the toroidal-type continuously variable transmission the water supply quantity can be changed while the electric motor is being operated at a constant speed.