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:
Jul. 19, 2011
Filed:
Apr. 28, 2006
Hiroshi Hamamoto, Kyoto, JP;
Sugio Tsukada, Kyoto, JP;
Tsuyoshi Sato, Kyoto, JP;
Koji Hattori, Kyoto, JP;
Hiroshi Hamamoto, Kyoto, JP;
Sugio Tsukada, Kyoto, JP;
Tsuyoshi Sato, Kyoto, JP;
Koji Hattori, Kyoto, JP;
Shimadzu Corporation, Kyoto, JP;
Abstract
An electronic balance is provided, in which a tolerance resulting from temperature variation is variable and a frequency for sensitivity calibration corresponds to the tolerance. A load detecting portiondetects a load of an object to be weighed, a processing portionconverts a detecting signal from the load detecting portioninto a mass value, transmits the mass data to a display portion, and controls a sensitivity calibrating mechanismto perform a sensitivity calibration by increasing or reducing internal weightson the load detecting portion. An operation control program of the processing portionis built with a tolerance input function, a sensitivity calibration execution condition calculating functionand a sensitivity calibration execution determining function. Whenever the temperature variation reaches or exceeds an allowable temperature variation ΔT, a sensitivity calibration is performed.