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:
Mar. 25, 1986
Filed:
Dec. 22, 1983
Yoshihumi Shibahara, Shiga, JP;
Akira Komoto, Shiga, JP;
Shimadzu Corporation, Kyoto, JP;
Abstract
There is disclosed a weighing scale in which a non-Roberval type load cell is used to detect a weight to be measured. The load cell used consists of two parallel cantilevers with the free ends connected to each other through a connecting means and of four strain gauges applied to the cantilevers by sticking every two of the four strain gauges on two separate positions in the longitudinal direction of each of the cantilevers. The four strain gauges constitute a bridge circuit which outputs the weight value of a weight placed on a weighing tray connected to the two cantilevers so that the center of the tray is positioned above the center of the plane made by the two cantilevers. According to this invention the weighing errors due to an eccentric or uneven weight loading on the tray are automatically eliminated on account of the structural symmetry of the load cell used. The difficulties in manufacturing a Roberval type precision load cell have finally be put out of the way by the present invention.