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. 11, 1984
Filed:
May. 17, 1982
Applicant:
Inventors:
Stephen P Lang, Waterloo, IA (US);
Yolanda E Martin, Cedar Falls, IA (US);
Patrick E Pinkston, Traer, IA (US);
Assignee:
Deere & Company, Moline, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B60Q / ; G08B / ;
U.S. Cl.
CPC ...
340 57 ; 340 / ; 340 60 ; 340501 ; 340588 ; 340679 ; 73510 ; 74856 ; 180177 ; 180278 ; 374102 ; 374141 ; 374144 ; 192-351 ; 192 / ;
Abstract
An agricultural vehicle, such as a tractor, includes an engine and a hydraulic assist-type transmission coupled together by a clutch. A monitor includes sensors for sensing engine speed, clutch temperature and transmission temperature. Warning signals are generated if the clutch temperature is continuously and at least a certain amount hotter than the transmission temperature for a certain time period. The warning signals are disabled if the engine speed is less than a threshold and for a certain time interval after the engine speed exceeds the threshold.