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. 30, 1996
Filed:
Dec. 02, 1993
Applicant:
Inventors:
Bruce L Erickson, Champlin, MN (US);
Allen H Stull, Ramsey, MN (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01C / ;
U.S. Cl.
CPC ...
338171 ; 338148 ; 338128 ; 338180 ;
Abstract
A multiple range variable resistor and potentiometer suitable for use in the repair or manufacture of hearing aids and other miniature applications is disclosed. The user of the device can select the desired resistance range thereby allowing one component to be used in many different applications and reducing inventory requirements. It provides increased resistance to contamination of the internal components compared to conventional hearing aid volume controls and is not damaged by over-turning of the control knob in either direction. It can be manufactured for the same cost as conventional single range potentiometers.