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:
Oct. 17, 1989
Filed:
May. 06, 1988
Vitaly S Dzjuban, Donetsk, SU;
Alexandr D Sazhin, Donetsk, SU;
Valery K Zhitnikov, Donetsk, SU;
Anatoly I Konoplyanko, Donetsk, SU;
Other;
Abstract
A device has a communication line leading to a control desk and a power supply connected to the communication line. Connected to the power supply are two circuits each comprising a unit for testing the communication line for condition and a current amplifier which are connected in series with each other. Connected to the inputs of each current amplifier is an interference suppression unit having its input connected to a current comparison unit. Two current comparison units are connected to the power supply and an electrical apparatus being controlled. The device also has a logical circuit connected to the power supply and the test units and an actuating unit connected to the logical circuit and one of the test units and coupled to the electrical apparatus.