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. 17, 1979
Filed:
Aug. 26, 1977
Applicant:
Inventor:
Gerhard Nonnenmacher, Korntal, DE;
Assignee:
Robert Bosch GmbH, Stuttgart, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16H / ;
U.S. Cl.
CPC ...
60445 ; 60447 ; 60464 ; 60494 ;
Abstract
The control system for a hydraulic transmission comprises a throttle element which consists of a constant throttle and a spring charged adjustable throttle arranged in parallel or, alternatively, comprises a combination of a constant throttle with adjustable throttles. The adjustable throttle has a cross section varying in response to the operating pressure of the hydrostatic transmission. The moment of rotation of a hydrometer included in the transmission is determined by the fluid stream caused by an adjustable pump which is adjusted by a servomechanism controlled by the throttle element and thus forms a transmission control member.