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. 18, 2001
Filed:
Feb. 29, 2000
Robert L. Leon, Maple Glen, PA (US);
Other;
Abstract
An apparatus is disclosed for detecting a leak in a valve and the magnitude of the leak. The valve has an upstream seal, a downstream seal and an inner cavity isolated by the seals. The apparatus comprises a mechanism for generating random pressure pulses in the inner cavity, a first sensor for detecting the onset of each pressure pulse and generating a trigger signal, a second sensor for sensing pressure pulses within the inner cavity and generating a representative second signal for each sensed pressure pulse and a third sensor located either upstream of the upstream seal or downstream of the downstream seal. The third sensor senses pressure pulses and generates a representative third signal for each sensed pressure pulse. Analysis circuitry samples and synchronously averages the second and third signals to determine the existence and magnitude of a seal leak.