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:
Aug. 14, 1979
Filed:
Jan. 26, 1978
Ivan L Brandt, Milwaukee, WI (US);
Theodor VON Alten, Grafton, WI (US);
Richard E Voss, Succasunna, NJ (US);
Oscar L Denes, Greendale, WI (US);
Allen-Bradley Company, Milwaukee, WI (US);
Abstract
A method of manufacturing a resistor element for fixed or variable resistors. The element comprises an insulating substrate injection molded from ceramic-glass frit material and organic binder and lubricating material and layers of resistive material and conducting termination material deposited on the unfired substrate. The organic materials in the substrate and its termination and resistive layers are substantially 'burned out' prior to simultaneously co-firing the substrate and the deposited resistive and termination layers. The fixed resistor element may be molded as a half-shell arranged to receive leads extending from opposite ends thereof and attached by soldering to the termination areas. A substantially identical cover member molded and fired from the same material as the substrate is adhesively attached to the substrate to complete the resistor. The invention further contemplates the provision of attaching respective leads by means of forming a solder ball of low melting solder on one end of a solder coated lead and fastening this end by means of a hydrogen torch to the portion of the fixed resistor subassembly containing the termination material.