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. 10, 2003
Filed:
Jan. 18, 2002
Applicant:
Inventors:
Steven H. Gluck, Cambridge, IA (US);
Frederic W. Pollman, Eden Prairie, MN (US);
Assignee:
Sauer-Danfoss, Inc., Ames, IA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16H 6/140 ;
U.S. Cl.
CPC ...
F16H 6/140 ;
Abstract
A method to provide a smooth shift during mode changes of an HMT when using mechanical clutches by reducing the power into the transmission momentarily when a shift is initiated by cutting fuel to the engine, and also reducing power in the hydrostatic transmission by crossporting the fluid circuit, and then reapplying power to both the engine and the transmission after the clutch has been shifted.