Electricity: circuit makers and breakers – Multiple circuit control – Pivoted contact
Patent
1991-10-17
1994-03-29
Scott, J. R.
Electricity: circuit makers and breakers
Multiple circuit control
Pivoted contact
200 11G, 200 16D, 200292, H01H 1958, H01H 100, G01D 502
Patent
active
052986985
ABSTRACT:
An encoder for generating a position signal in accordance with a position of a conductive slider comprises a non-conductive substrate, a first conductive pattern formed on the substrate, and at least three second conductive patterns formed on the substrate. The second patterns are independent from the first pattern. Each of the second patterns has a lead wire extending to an edge of the substrate. The slider is slidable on the substrate, and produces a conductive state signal when it abuts against the first pattern and produces a non-conductive state signal when it abuts against the second pattern or the substrate. The position signal is generated in accordance with the conductive state signal and the non-conductive state signal. One of the second patterns is surrounded by the first pattern, and the lead wire extending therefrom passes between the other two second patterns and extends to the exterior of the first pattern.
REFERENCES:
patent: 2896033 (1959-07-01), Hartz
patent: 3030460 (1962-04-01), Huetten et al.
patent: 3089923 (1963-05-01), Wright
patent: 3531603 (1970-09-01), Ashman
patent: 4135065 (1979-01-01), Nicot
Hashimoto Masashi
Iida Yoshikazu
Kosaka Toru
Tsuru Hiroyuki
Nikon Corporation
Scott J. R.
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