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:
Apr. 27, 1999
Filed:
Apr. 29, 1997
Applicant:
Inventor:
Lawrence R Folsom, Pittsfield, MA (US);
Assignee:
General Dynamics Defense Systems, Inc., Falls Church, VA (US);
Primary Examiner:
Int. Cl.
CPC ...
F16D / ; F16H / ;
U.S. Cl.
CPC ...
60490 ;
Abstract
An infinitely variable hydrostatic transmission includes an input shaft connected to drive a hydraulic pump unit, a grounded hydraulic motor unit, and an output shaft. A swashplate assembly is connected to impart output torque to the output shaft resulting from the pumped exchanges of pressured hydraulic fluid between the hydraulic pump and motor units. A ratio controller is linked to independently, variably position input and output members of the swashplate assembly and thus vary nutating magnitudes of cylinder blocks of the hydraulic pump and motor units, pursuant to adjustably setting ratio conditions of the transmission.