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:
Aug. 30, 1983
Filed:
Apr. 03, 1981
Edmund J Gorsek, Springfield, IL (US);
Dickey-john Corporation, Auburn, IL (US);
Abstract
A grain sensor comprises a piezoelectric element mounted to a rear surface of a relatively thin, flat sounding board of substantially greater surface area than the piezoelectric element. Forces experienced by the sounding board due to grain particles impinging upon the front surface thereof are imparted to the piezoelectric element. A rigid frame surroundingly engages side edges of the sounding board. The rigid frame includes an inwardly extending flange for substantially covering a peripheral edge portion of the front surface. A base member having a surface substantially congruent with the sounding board surfaces is mounted in facing relation to the rear sounding board surface for substantially enclosing the piezoelectric element therebetween. A resilient seal and spacer member is interposed between the facing surfaces of the sounding board and the base member.