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. 12, 2000
Filed:
Aug. 07, 1997
Yehia M El-Ibiary, Simpsonville, SC (US);
Richard L Sarkisian, Granger, IN (US);
Reliance Electric Technologies, LLC, Thousand Oaks, CA (US);
Abstract
A system for detecting defects in a rotating machine system includes a sensor such as an accelerometer coupled to the machine system for detecting vibrations of a rotating element. Output of the accelerometer is transmitted, preferably via a network data link to a monitoring/control circuit. The monitoring/control circuit analyzes the vibration data to develop a normal vibration profile for the machine system during a normal operating phase. The normal vibration profile is stored in a memory circuit for later reference. During subsequent operation of the machine system, the monitoring/control circuit cyclically analyzes vibration data to develop actual vibration profiles. The actual vibration profiles are compared to the normal vibration profile and, where variations between the profiles exceed preset tolerances, the circuit provides an indication of a malfunction or defect in the machine system. The technique is particularly well suited to conveyor systems such as drum pulleys and the like in which cracks, breaks and other defects can result in unexpected failure and maintenance.