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. 09, 1981
Filed:
Jul. 02, 1979
Applicant:
Inventor:
Richard A Schafer, Traer, IA (US);
Assignee:
Deere & Company, Moline, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A01B / ;
U.S. Cl.
CPC ...
172-7 ; 172430 ;
Abstract
An improved draft sensing device for a tractor draft control system, the draft sensing device including a tapered load pin having its large end rigidly attached to the tractor and its free end pivotally carrying the tractor draft link through a load arm which imposes a torsional load on the load pin in proportion to the draft load. A bracket secured to the load arm amplifies and measures the load pin motion.