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:
Mar. 05, 1991
Filed:
Mar. 06, 1990
Harry F Deutsch, New Hope, PA (US);
Measurement Systems, Inc., New Hope, PA (US);
Abstract
Apparatus and method for proving a test meter comprising a standard for a test gas to a meter; encoder means for determining the amount of test gas supplied from said standard; valve for regulating the flow of gas from said supply means; a sensor comprising two metallic reeds encapsulated in a housing, said reeds being maintained in a non-contacting position the magnetic field of at least two magnets, said sensor being placed in proximity to the oscillating diaphragm of a gas meter whereby said oscillating diaphragm periodically interferes with said magnetic field thereby resulting in the periodic contact of said reeds and the generation of a signal at said sensor representing the passage of a predetermined quantity of test gas; and an electronic sensing device which activates upon the contact of the metallic reeds. The mechanism includes a device for adjusting the sensitivity of the reeds.