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:
Mar. 29, 2011
Filed:
Oct. 23, 2008
Augusto D. Hernandez, Brookfield, WI (US);
Augusto D. Hernandez, Jr., Legal Representative, Lutz, FL (US);
Fred J. Rapant, South Milwaukee, WI (US);
Richard J. Kaluzny, Greenfield, WI (US);
Donald A. Down, Brookfield, WI (US);
Augusto D. Hernandez, Brookfield, WI (US);
Augusto D. Hernandez, Jr., legal representative, Lutz, FL (US);
Fred J. Rapant, South Milwaukee, WI (US);
Richard J. Kaluzny, Greenfield, WI (US);
Donald A. Down, Brookfield, WI (US);
Cooper Technologies Company, Houston, TX (US);
Abstract
The life of load tap changer contacts is monitored by detecting an arcing event; identifying arcing surfaces involved in the arcing event; calculating a per-unit loss of life for the identified arcing surfaces as a result of the arcing event; updating estimates of cumulative erosion for the arcing surfaces; comparing the updated estimates of cumulative erosion to a first threshold value; and signaling for action when at least one of the updated estimates of cumulative erosion exceeds the first threshold value.