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:
Apr. 01, 1980
Filed:
Jun. 12, 1978
Jack Elias, Lansdale, PA (US);
Arthur M Olen, Pennsbyrg, PA (US);
Honeywell Inc., Minneapolis, MN (US);
Abstract
A method for fault-testing of electrical apparatus includes the steps of interrupting the application of control signals normally producing changes in the electrical apparatus, disconnecting electrical apparatus monitoring circuits from energizing signal means used to produce output signals from the electrical apparatus monitoring circuits dependent on the state of electrical apparatus, and checking the subsequent output of monitoring circuits to detect the output signal to detect output signals during the deenergized state indicative of a fault in the monitoring circuits. An apparatus for performing the aforesaid testing method includes a digital computer having a stored test control program therein for selectively addressing the power supply connection means of the monitoring equipment to produce a deenergization of the monitoring equipment and means for checking the output of the monitoring equipment after the deenergization thereof.