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. 28, 1976
Filed:
Feb. 21, 1975
Saul Herscovici, Waterloo, IA (US);
Lawrence Vernon Anderson, Cedar Falls, IA (US);
Deere & Company, Moline, IL (US);
Abstract
A four-wheel drive tractor with front and rear frame structures joined for articulation about a generally upright pivot has a split change speed-transmission. The first section of the transmission is supported on the front frame structure of the tractor and provides direct drive and overdrive speed ratios. A second section of the transmission is supported on the rear frame structure of the tractor and has a plurality of forward and reverse transfer ratios. A power take-off on the rear frame structure of the tractor is driven by the drive between the first and second sections of the transmission and includes selectively engageable and disengageable clutch means. An interlock between the clutch means and the first section of the transmission shifts the first section of the transmission to and/or holds the first section of the transmission in its direct drive condition whenever the PTO clutch is engaged. In this manner damage to any PTO driven implement coupled to the tractor as a result of overspeed is avoided.