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:
Aug. 29, 1989
Filed:
Dec. 09, 1986
Applicant:
Inventor:
Albert P Buck, Orlando, FL (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01F / ; G01F / ;
U.S. Cl.
CPC ...
7386105 ; 73-3 ;
Abstract
An improved primary gas flow calibrator measures the flow rate of a gas source through a fixed volume by monitoring the travel time of a liquid soap film. The device comprises a novel mechanism for generating a single film of soap across a first end of a flow tube and an infrared light beam responsive timing system for determining the speed of a soap film moving through a portion of the flow tube. The device is a microprocessor-based system which comprises settable adjusting DIP switches for avoiding exacting dimensional tolerances of the flow tube during manufacture.