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:
Aug. 04, 2015
Filed:
Oct. 19, 2010
Naoto Izumo, Kitamoto, JP;
Takaaki Kagawa, Kitamoto, JP;
Naoto Izumo, Kitamoto, JP;
Takaaki Kagawa, Kitamoto, JP;
A&D Company Limited, Tokyo, JP;
Abstract
A portable, small-sized device is provided to accurately conduct a leakage test for a liquid volume meter such as a pipette. In operation, pipette P is connected to the device main body side via a tube. A command from a central processing unit causes a pump to perform a suctioning operation to depressurize the pipette P side to a predetermined pressure. Any pressure changes over a predetermined period of time are monitored by a pressure sensor. The central processing unit determines whether there is leakage from the pipette P, and displays a judgment result on a display unit. In particular, when a diaphragm pump is used as the pump, the pulsation of an air flow occurring in a suction operation is attenuated in a pressure vessel so as not to have harmful effects on either the inspection results or the pipette P side.