Back to results
US 4,274,074 AGranted
Slide type variable resistor having dual tracks
AssigneeAlps Electric Co., Ltd.
InventorNozomu Sakamoto
Life of this patent
Estimating the term…
Abstract
Disclosed is a variable resistor of the slide type incorporating a pair of resistor units carried on the same base plate and disposed in parallel with respect to each other. A plurality of conductive taps angle outwardly from a resistance member provided in each of the resistor units and a pair of sliders can be slidingly moved along and in contact with the series of the plurality of conductive taps in the pair of conductor units, respectively, but do not contact the resistance members directly.
Claims8
A variable resistance apparatus of slide type comprising:
- a housing;
- an insulating base plate secured in said housing;
- first and second resistor units provided on said insulating base plate, each of said first and second resistor units including a resistor member having conductive portions connected to the opposite ends thereof and including a plurality of conductive taps extending transversely from said resistor member, said conductive taps being arranged in parallel with respect to one another;
- a central isolation band provided between said first and second resistor units;
- an elongated bridge member consisting of insulating material and being provided above said first and second resistor units;
- first and second conductive bands provided on said bridge member, said conductive bands being insulated from and arranged in parallel with respect to each other;
- and
- a slider holder movably mounted in said housing and holding first and second sliders, said first and second sliders being adapted to slidingly contact with the conductive portions and the conductive taps in said first and second resistor units, respectively, and with the corresponding conductive bands on said bridge member.
5 more elements
Dependencies are inferred from the claim text.