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:
Feb. 15, 1983
Filed:
May. 08, 1980
Friedrich Ehrlinger, Friedrichshafen, DE;
Michael Meyerle, Meckenbeuren, DE;
Zahnradfabrik Friedrichshafen A.G., Friedrichshafen, DE;
Abstract
A hydrostatic-mechanical gear unit wherein input power is divided into an hydraulic power branch and a mechanical power branch. The hydraulic branch includes two hydrostatic units in tandem. Through gearing the hydraulic branch is directed to a first internal gear for transmitting the rotational hydraulic power. The mechanical branch through gearing leads to a second internal gear for transmitting rotational mechanical power. The internal gears together with pinions form part of a planetary wheel set for integrating the mechanical power and the hydraulic power. An intermediate shaft connected to the pinion carrier conveys power to an output shaft through a coupling in a first forward driving stage and in the reverse driving stage, and a coaxial shaft connected with a sun wheel conveys power to the output shaft through a coupling in a second forward driving stage.