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. 25, 1991
Filed:
Apr. 03, 1989
Applicant:
Inventor:
Dennis L Jeffries, Waterloo, IA (US);
Assignee:
Deere & Company, Moline, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16H / ;
U.S. Cl.
CPC ...
475142 ; 192 / ;
Abstract
A single piston is used to activate the brake or clutch of a planetary transmission. The piston is spring-biased to engage one component and disengage the other, and hydraulically activated to disengage the first component and engage the second. An annular plate preferably is provided extending between the brake and the clutch, with the brake on one side of the plate and the clutch on the other. A spring then biases the annular plate towards one of the control components and away from the other, while a hydraulic cylinder is provided to press the plate away from the first component and towards the second.