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. 02, 2019
Filed:
Sep. 22, 2016
Tatsuno Corporation, Tokyo, JP;
Tsutomu Otaki, Tokyo, JP;
Norikazu Osawa, Tokyo, JP;
TATSUNO CORPORATION, Tokyo, JP;
Abstract
To provide a calibration device for apparatus filling a gas such as hydrogen gas and capable of precisely measuring quantity of the gas that is filled at high pressure. A calibration device of the present invention includes: a filling vessel, accommodated in a measurement housing, to the filling vessela high pressure fuel gas such as hydrogen gas being fed from outside of the measurement housing; a scalefor measuring a weight of a fuel gas fed to the filling vessel; and a control device CU for eliminating an error caused by changing buoyant force from a gas in the measurement housing before and after filling the fuel gas.