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US 4,521,761 AGranted
Small outline potentiometer
AssigneeSangamo Weston, Inc.
InventorEdward W. Welch
Life of this patent
Estimating the term…
Abstract
A single-turn miniature potentiometer includes a first substrate having an annular conductive track formed thereon and a second substrate facing the first and having an annular resistive track formed thereon. An insulating layer is placed between the two substrates and has an opening provided therein for receiving a disk-like rotor which bears an electrically conductive wiper for simultaneously contacting both the conductive and resistive tracks. Electrical connections are made between the resistive and conductive tracks by means of external U-shaped clips.
Claims14
A potentiometer comprising:
- a first substrate having a conductive layer formed thereon;
- a second substrate having a resistive layer formed thereon, the first and second substrates being arranged in a spaced-apart facing relationship with respect to each other;
- a circular disk-like rotor disposed between the first and second substrates, the rotor including a radial opening formed therein;
- and
- a one-piece conductive wiper formed from a conductive resilient material disposed in the rotor opening, the wiper including a pair of arms having a series of parallel resilient members formed thereon extending above and below the plane of the rotor with the resilient members of one arm arranged to contact the conductive layer of the first substrate and the resilient members of the other arm arranged to contact the resistive layer of the second substrate.
2 more elements
Dependencies are inferred from the claim text.