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:
Jan. 21, 1992
Filed:
Aug. 21, 1990
Stephen S Clark, Michigan City, IN (US);
Brian L Palmer, Michigan City, IN (US);
Dwyer Instruments, Inc., Michigan City, IN (US);
Abstract
A shoe tester for use in environments where static electricity sparking must be eliminated between so called Electrostatic Dissipating (ESD) shoes and the floor, by personnel wearing a pair of such shoes, wherein the tester comprises a pair of metallic electrically conductive shoe plates secured together in spaced but side-by-side relation resting on such floor on insulated studs or the like, on which the person wearing the shoe stands with his shoes on the respective plates, and a 'plug-in' electronic circuit for measuring the resistance of such person and the shoes, including a scale and a pointer arm associated with the tester for actuation by the circuit when electrically energized by any grounded 115 volt alternating current outlet available for indicating acceptable and unacceptable shoe resistances, wherein the circuit includes an amplifier arrangement that permits the resistance measurements to be made to be in the range of 2,000 megohms.