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:
Jan. 20, 2004
Filed:
Feb. 08, 2002
Annie Q. Wang, Shanghai, CN;
Jiangang Chen, Shanghai, CN;
Industrial Scientific Corporation, Oakdale, PA (US);
Abstract
A calibration adaptor for a gas sensing device having a gas entry port therein includes a base piece having a gas entry port therein which is fixedly attached to a surface of the gas sensing device, and provided with means for releasably retaining the base piece in a first position in which the gas entry port of the gas sensing device is open to detect ambient gases, and means for moving the attached base piece to a second position in which the gas entry port of the base piece is aligned with the gas entry port of the gas sensing device, and controls entry of gas into the gas entry port of the gas sensing device. A calibration gas source may be attached to the gas entry port of the base piece.