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:
Jul. 11, 1978
Filed:
May. 10, 1976
Applicant:
Inventor:
Oscar L Denes, Milwaukee, WI (US);
Assignee:
Allen-Bradley Company, Milwaukee, WI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01C / ;
U.S. Cl.
CPC ...
338195 ; 29620 ;
Abstract
A variable resistor having an insulating substrate, a resistive film applied to the surface of the substrate and spaced terminals supported by the resistor and in electrical connection with the resistive film. The resistance of the film is adjusted by means of scribing to remove portions of the film to provide a means of isolating certain areas of the film to increase the resistance of the electrical path between the terminals. Embodiments of the assemblage are disclosed wherein the scribing tool may provide an arcuate configuration or a linear configuration to provide desired resistance values.