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. 09, 1979
Filed:
Nov. 10, 1977
Oscar L Denes, Milwaukee, WI (US);
Allen-Bradley Company, Milwaukee, WI (US);
Abstract
A trimmable resistor includes inner and outer resistive strips which are deposited on a base and spaced apart to form a gap. The outer strip is electrically connected at each end to one of a pair of spaced electrical terminals. A plurality of conductive members are spaced apart along the length of the gap and bridge the gap to connect the two resistive strips at a corresponding plurality of locations. The severing of successive frangible conductive members increases the resistance of the trimmer in increments. In a specific embodiment the resistive strips are formed of a cermet material, the base is an alumina substrate, the gap is arcuate, and a thermosetting plastic resin is disposed in the gap to form an insulating buffer pad for each of the frangible conductive members.