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:
Sep. 26, 1989
Filed:
Nov. 10, 1988
Michel Sarrazin, Massingy, FR;
SEB S.A., Selongey, FR;
Abstract
In order to calibrate an appliance for measuring force or moment, the measuring element (l) carries a strain gage bridge (R.sub.1, R.sub.2, R.sub.3, R.sub.4) for delivering a signal which is mainly sensitive to the force or to the moment to be measured and is provided at the time of manufacture with two other strain-gage bridges (R.sub.5, R.sub.6, R.sub.7, R.sub.8); (R.sub.9, R.sub.10, R.sub.11, R.sub.12) for delivering signals which are mainly sensitive to two parasitic stresses other than the force or the moment to be measured. In a first stage, the method consists in measuring the signals delivered by the three strain-gage bridges in the absence of any load applied on the measuring element, then under a number of known reference loads chosen from among those to which each strain-gage bridge is the most sensitive. In a second stage, the reference measurements are used as a basis for calculating the parameters of sensitivity according to which each of the signals delivered by the measuring bridges is a function of the applied loads. In a third stage, these parameters of sensitivity are used as a basis for calculating the correction to be made in the force or the moment measured by the first strain-gage bridge (R.sub.1, R.sub.2, R.sub.3, R.sub.4).