Two terminal variable resistor

Details Two terminal variable resistor Two terminal variable resistor

2005-12-01

2010-12-07

Enad, Elvin G (Department: 2832)

Electrical resistors

Mechanically variable

Deformable

C338S096000

Reexamination Certificate

active

07847674

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.

REFERENCES:
patent: 1660161 (1928-02-01), Hansen
patent: 2862089 (1958-11-01), Mairs
patent: 4185263 (1980-01-01), Frey
patent: 4257305 (1981-03-01), Friend et al.
patent: 4333068 (1982-06-01), Kishel
patent: 6891465 (2005-05-01), Hatayama
patent: 7140921 (2006-11-01), Liu
patent: 7190251 (2007-03-01), Schrum et al.

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