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:
Apr. 08, 1986
Filed:
Jun. 01, 1984
Yoshihisa Nishiyama, Shizuoka, JP;
Tokyo Electric Co., Ltd., Tokyo, JP;
Abstract
A load cell type weight measuring device includes a load cell which produces an output voltage corresponding to the weight applied thereto, an amplifier circuit for amplifying the output voltage of the load cell, and an A/D converter for converting an output voltage of the amplifier circuit to digital data. This weight measuring device further includes a rated voltage generating circuit for generating an output voltage equal to the output voltage generated from the load cell which is applied with a rated weight; switches for selectively connecting the load cell, the rated voltage generating circuit and the ground terminal to the amplifier circuit; and a microcomputer which gives control signals to the switches and inhibits the output data of the A/D converter from being supplied as effective weight measurement data when it is detected that the difference between two items of output digital data of the A/D converter, which are respectively obtained when the ground terminal and the rated voltage generating circuit are selected, exceeds a predetermined range.