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:
Dec. 01, 1998
Filed:
Feb. 18, 1997
Applicant:
Inventors:
William Edward Reeves, Coffeyville, KS (US);
Kevin Lee Vaughters, Altamont, KS (US);
George William Detrick, III, Coffeyville, KS (US);
Norval Thomas Gruver, Independence, KS (US);
Briton Todd Eastman, Coffeyville, KS (US);
Assignee:
Deere & Company, Moline, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16D / ; F16H / ;
U.S. Cl.
CPC ...
74335 ; 7433 / ; 477 78 ;
Abstract
The hydraulically operated clutch elements of a powershift transmission have hold pressures and fast-fill times which are calibrated as a function of the rotation speed of an internal component of the transmission. The engine speed remains substantially constant and no or substantially no torque is transmittted to the output shaft of the transmission.