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:
Sep. 29, 1987
Filed:
Feb. 04, 1986
Applicant:
Inventor:
Jeffrey C Marks, Waterloo, IA (US);
Assignee:
Deere & Company, Moline, IL (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16H / ;
U.S. Cl.
CPC ...
74767 ; 74766 ; 7478 / ;
Abstract
A three-speed planetary transmission having a single ring gear and dual planetary gear sets meshing with the single ring gear. Gear changes are effected by coupling or alternately fixing a set of two sun gears which mesh with the two planetary gear sets. This transmission can provide a direct drive and two other speed ratios. Utilizing a single ring gear in combination with two planetary gear sets allows nesting of gear elements and economy of space for the transmission.