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:
Feb. 04, 1992
Filed:
Mar. 09, 1990
Laurence S Slocum, Indianapolis, IN (US);
Michael T Clouser, Indianapolis, IN (US);
Emerson Electric Co., St. Louis, MO (US);
Abstract
A leak test probe includes a pressure transducer which may be mounted in mechanical contact with liquid in the conduit. The pressure transducer provides a pressure signal to a microprocessor-based circuit which, following software stored in its memory determines if there is a leak in the conduit by measuring the time rate of change of the pressure. The software also analyses the pressure signal and compensates for the effect of gas in the conduit by determining the time rate of change in the pressure immediately after the pump turns off and adjusting a sliding time scale for the leak test depending on the result.