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:
Nov. 26, 2013
Filed:
Apr. 26, 2010
Hayato Hatanaka, Hitachi, JP;
Teyon Shin, Hitachi, JP;
Masahiko Fujita, Hitachi, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
Sealed chamber for monitoring pressureis provided on sealed tank. Sealed tankis filled with insulating gas. And, a connection using insulated pipeis provided between medium-pressure spacethat makes a medium pressure and sealed chamber for monitoring pressure. In sealed chamber for monitoring pressure, a pressure monitoring and controlling means is provided for monitoring the internal pressure thereof to activate the pressure-release control in response to the situation where the monitored internal pressure has reached the predetermined setting value. The pressure monitoring and controlling means includes solenoid valvethat is capable of opening sealed chamber for monitoring pressureto the atmosphere, pressure detectorthat detects the internal pressure, and pressure monitor, which activates solenoid valvefor pressure-release when pressure detectordetects that the internal pressure has reached the predetermined abnormal pressure value.