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. 30, 1980
Filed:
Aug. 30, 1978
Applicant:
Inventor:
Randall C Ragan, Rancho Sante Fe, CA (US);
Assignee:
North American Philips Corporation, New York, NY (US);
Primary Examiner:
Int. Cl.
CPC ...
H01C / ;
U.S. Cl.
CPC ...
338174 ; 338163 ; 338202 ;
Abstract
An open frame single turn potentiometer with a helical coil spring wiper including a resilient member situated between the substrate and the rotor. The resilient member consists of an annular ring preferably having a 'D-shaped' or hemispherically shaped cross section. This 'D' ring member performs the function of providing a spring action between the substrate and the rotor; means for controlling torque; and means for adjusting to the build-up in tolerences between the various component elements of the trimmer, thereby achieving optimum electrical and mechanical performance.