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:
Nov. 08, 1994
Filed:
Aug. 27, 1992
Hiroshi Goto, Yamatokoriyama, JP;
Omron Corporation, Kyoto, JP;
Abstract
A weight measuring device includes two piezoelectric elements. The first piezoelectric element induces vibration in an object to be measured, and the second one detects the reaction force of the object generated by the vibration. This force is detected by a voltage monitor circuit as an output voltage from the second piezoelectric element. From the voltage which has been detected, the weight of object is determined. The device further includes an absorbing element to absorb unnecessary piezoelectric strain in reaction force generated when the object vibrates. The invention provides a compact weight sensor which can be produced at low cost, and which can measure weight with high accuracy.