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. 01, 2008
Filed:
Dec. 14, 2005
Sam Yong Woo, Daejeon, KR;
IN Mook Choi, Daejeon, KR;
Boo Shik Kim, Daejeon, KR;
Abstract
Disclosed herein is a calibration apparatus for vacuum gauge having a combined use for an 1 Torr level, a 10 Torr level, and a 100 Torr level vacuum gauge. According to the present invention, there is provided a calibration apparatus for vacuum gauge, in which a standard pressure gaugeis installed within a pressure vesselfor calibrating a monitoring pressure gauge, the apparatus comprising: a balance mounting shaftinstalled vertically within the pressure vesseland provided with a plurality of balance mounting basesspaced apart from one another at predetermined intervals along an axial direction, and the standard pressure gaugebeing connected to lower portion of the balance mounting shaft; a plural sets of balances mounted between the respective balance mounting bases, each of which is composed of a plurality of balances; means for elevating each balance of the plural sets of the balances from the balance mounting baseseparately or mounting the balance on the balance mounting base; and means for controlling the operation of the elevating means according to commands received from the outside.