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:
Dec. 07, 2010
Filed:
Mar. 31, 2008
Applicant:
Michael A. Murphy, Raleigh, NC (US);
Inventor:
Michael A. Murphy, Raleigh, NC (US);
Assignee:
Elster Electricity LLC, Raleigh, NC (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G08B 13/08 (2006.01); G08B 13/14 (2006.01); G01R 11/56 (2006.01); G01R 21/133 (2006.01); G06F 17/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A tamper alarm circuit for detecting a tampered condition of a utility meter is disclosed. The tamper alarm circuit has a transducer coupled to an amplification circuit which is coupled to a detection circuit, the detection circuit generating an alarm condition when the detection circuit determines that a voltage signal generated by the transducer and amplified by the amplification circuit has reached a predetermined threshold.