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:
Sep. 28, 1982
Filed:
Nov. 13, 1980
Applicant:
Inventors:
William B Graves, Cerritos, CA (US);
James F Walsh, Irvine, CA (US);
Assignee:
EECO Incorporated, Santa Ana, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01C / ;
U.S. Cl.
CPC ...
338127 ; 338128 ; 338174 ;
Abstract
A compact configuration of resistive elements, plural circularly-arranged fixed contacts upon, or mountable upon, a printed circuit board (PCB), to comprise a rotary variable resistor. In one embodiment, fixed contacts are disposed upon one side of a PCB, in which through-conductors connect to a resistor pattern upon a separate ceramic substrate. In another embodiment, fixed contacts occupy the central area, and resistors and interconnecting conductors surround the same; all on one side of a ceramic substrate. Mutually insulated spring wipers connect to the fixed contacts to allow rotary variation of resistance.