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:
Dec. 07, 2010
Filed:
Dec. 01, 2005
Applicant:
Sten R. Gerfast, Mendota Heights, MN (US);
Inventor:
Sten R. Gerfast, Mendota Heights, MN (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01C 10/12 (2006.01);
U.S. Cl.
CPC ...
Abstract
A small inexpensive two terminal variable resistance assembly that conveniently changes its resistance when a force of an actuator is applied. It can be made for power applications as well as in miniature dimension versions in values from milli-ohms to meg-ohms. This variable resistor increases its power handling capacity during a decrease in its ohmic value, contrary to present three terminal potentiometers or reostats. It does this by a rolling action that increases or decreases two resistive surface areas in parallel. It could also be used as a variable capacitor.