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:
May. 09, 1978
Filed:
Mar. 04, 1977
Applicant:
Inventors:
Milton Goldish, Chicago, IL (US);
Arthur E Evenson, Chicago, IL (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01R / ;
U.S. Cl.
CPC ...
324 62 ; 320-1 ;
Abstract
An ohmmeter and circuit therefor which does not require an internal battery or a continuing coupling to an external voltage source during normal use, with the necessary operating electrical power supplied through a high capacity capacitor which, after initial energization by a temporary connection to an external voltage source, develops a stored source of operating power. As the operating current is constant, there is no necessity for scale adjustment prior to each use of the ohmmeter.