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. 08, 2010
Filed:
Feb. 08, 2007
Applicants:
Richard B. League, Peoria, IL (US);
Joseph A. Grove, Mapleton, IL (US);
Todd R. Kabrich, Creve Coeur, IL (US);
Inventors:
Richard B. League, Peoria, IL (US);
Joseph A. Grove, Mapleton, IL (US);
Todd R. Kabrich, Creve Coeur, IL (US);
Assignee:
Caterpillar Inc., Peoria, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16H 61/00 (2006.01); G06F 7/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A calibration system for calibrating a transmission adjusts a clutch fill pulse width and hold level current for an oncoming clutch via calibration shifts during operation of the associated machine, thus establishing the desired shift timing and duration. The pulse width is calibrated based on torque transfer characteristics of the clutch during a test shift, and the hold level current is calibrated based on the shift duration of a further test shift.