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:
Nov. 07, 1989
Filed:
Oct. 14, 1988
Applicant:
Inventors:
Seaton Moon, Cedar Falls, IA (US);
Mark A Bergene, Cedar Falls, IA (US);
Assignee:
Deere & Company, Moline, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B60K / ;
U.S. Cl.
CPC ...
180244 ; 180247 ;
Abstract
A clutch control system for the front wheel drive clutch of a four-wheel drive vehicle engages the front wheel drive clutch when both service brakes are simultaneously released or simultaneously applied, but disengages the clutch when only the left or the right service brake alone is applied. The control system includes three brake-operated switches, a manually-operated switch and a speed responsive switch connected to the solenoid of a front wheel drive clutch control valve.