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. 16, 2003
Filed:
Jan. 11, 2002
Alan Glen Johnson, Raleigh, NC (US);
Frederic Thomas Cuddy, Fayetteville, NC (US);
Phillip Morris Douglas, Clayton, NC (US);
Santronics, Inc., Sanford, NC (US);
Abstract
In order to assist persons of limited skill or time to test electromechanical or other relays without the need for VOM testing and time-consuming test setup, switching circuits, current sources are used in an automated test set with a stored program which tests the impedance between each terminal of the relay and every other terminal of the relay, identifies the terminals for the relay coil and for the relay's contact terminals and whether the contacts are NO, NC, or double throw type. The test set notes the presence or absence of a coil-suppression device across the coil, repetitively tests operation of the contacts, and informs the human operator, in simple terms, if the relay is operable and safe for use with delicate drive circuits.