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:
Dec. 07, 1976
Filed:
Feb. 10, 1975
Carl Edward Kainer, Cedar Falls, IA (US);
Gordon K Wiegardt, Cedar Falls, IA (US);
Deere & Company, Moline, IL (US);
Abstract
A sensor for measuring the load exerted on a member includes two spaced apart, aligned stationary capacitor plates and a movable capacitor plate disposed intermediate the two stationary plates and spaced therefrom to form two air dielectric capacitors. The stationary plates are attached at one point to the member and the movable plate is connected by a shaft to a second point. Loading the member causes elastic deformation between the first and second points which causes the movable plate to move relative to the stationary plates. This relative movement causes differential changes in capacitance in the two capacitors which are detected and conditioned to form a usable control signal.