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:
May. 25, 1976
Filed:
Jun. 17, 1974
Bruce Joseph Berrettini, Allentown, PA (US);
Air Products and Chemicals, Inc., Allentown, PA (US);
Abstract
A method and apparatus for proving and calibrating meters used to measure the amount of cryogen dispensed from a storage receptacle. The apparatus can be lightweight and portable for verifying meters in the field and it is possible with the apparatus to prove or calibrate both volumetric and mass flow type cryogenic meters. The apparatus is further characterized by providing for simultaneously using the meter under test to record the amount dispensed and using the test apparatus to measure the temperature, pressure, volume, flow rate, and time to prove the meter under test by physical determination of the amount of product dispensed. Furthermore, the apparatus of the present invention can serve as a Cryogenic Liquid Meter Transfer Standard which meets the National Bureau of Standards specifications for such devices.