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, 1986
Filed:
Sep. 28, 1984
David F Brown, Bethlehem, PA (US);
Joseph L Jones, Jim Thorpe, PA (US);
Livio R Melatti, Bethlehem, PA (US);
David C Sullivan, Bethlehem, PA (US);
George F Wilkinson, Jr, Northampton, PA (US);
AT&T Technologies, Inc., Berkeley Heights, NJ (US);
Abstract
The continuity of a ground strap (16) is tested by pushing down on a switch activating toggle lever (37). The toggle lever is conductive, is isolated from ground and is coupled to a signal input terminal of a test circuit module (14). Thus, when the hand of the operator touches the toggle lever to activate the test circuit module (14), the resistive path through the operator and the ground strap (16) is coupled into the test circuit as the input-terminal-to-ground resistor of a voltage divider circuit. A resulting voltage at the toggle lever causes an indication by lighting either indicator (33) or indicator (34) whether the operator is properly coupled to ground.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile