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:
Mar. 15, 2022
Filed:
Feb. 16, 2021
Applicant:
Deere & Company, Moline, IL (US);
Inventor:
Austin J. Karst, Bloomfield, IA (US);
Assignee:
DEERE & COMPANY, Moline, IL (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16H 61/4192 (2010.01); F16H 39/02 (2006.01); F16H 61/44 (2006.01); F16H 61/00 (2006.01);
U.S. Cl.
CPC ...
F16H 61/4192 (2013.01); F16H 39/02 (2013.01); F16H 61/0025 (2013.01); F16H 61/44 (2013.01); F16H 2061/0068 (2013.01);
Abstract
A method of diagnosing a hydrostatic transmission system includes defining an initial charge pressure of a charge pump at a defined operating position of a primary pump. The primary pump is controlled to operate at the defined operating position. A current charge pressure from the charge pump is sensed when the primary pump is operating at the defined operating position. A pressure difference between the initial charge pressure of the charge pump and the current charge pressure of the charge pump is calculated and correlated to a system state of health of the hydrostatic transmission system.