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:
Jun. 26, 2001
Filed:
Apr. 27, 2000
Applicant:
Inventors:
Jürgen Legner, Friedrichshafen, DE;
Egon Mann, Friedrichshafen, DE;
Siegfried Stützle, Friedrichshafen, DE;
Assignee:
ZF Friedrichshafen AG, Friedrichshafen, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16H 4/700 ;
U.S. Cl.
CPC ...
F16H 4/700 ;
Abstract
A traveling mechanism having a driving motor (,) which drives a feed pump (,) and a hydrostatic variable displacement pump (,), a zero fluctuating hydrostatic variable displacement motor (,) which forms with the hydrostatic variable displacement pump (,) a hydrostatic circuit and a hydrostatically driven 2-speed gear mechanism (,) which is engaged when the torque to be transmitted is minimal and the hydrostatic variable displacement motor (,) is at zero displacement capacity.