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:
Sep. 09, 1997
Filed:
Mar. 01, 1996
George D Baker, Cambridge, MD (US);
Air Liquide America Corporation, Houston, TX (US);
Abstract
An instrument calibrating demand flow regulator for providing a demanded amount of calibration gas from a calibration gas source to an instrument to be calibrated to permit calibration of the instrument includes a housing having an interior, an inlet for connection to the calibration gas source and an outlet for connection to the instrument to be calibrated. A pressure regulating valve device positioned within the interior of the housing regulates the pressure of the calibrated gas entering the interior of the housing through the inlet and a demand flow valve device delivers calibration gas to the outlet of the housing upon demand by a pump operatively associated with the instrument.