Communications: electrical – Continuously variable indicating – With particular transmitter
Patent
1988-04-05
1988-12-27
Weldon, Ulysses
Communications: electrical
Continuously variable indicating
With particular transmitter
324 61R, G08C 1910
Patent
active
047943939
ABSTRACT:
A measuring device having first and second members mounted for cooperative movement between different positions with respect to each other. Conductors comprised of at least three groups of spaced apart elements with the elements in each group being interconnected are carried by the first member. Conductors comprised of a plurality of spaced apart elements are carried by the second member so that the conductors carried by the first member and the conductors carried by the second member face each other. A dielectric covers the conductive means on said first and second members so that at least three capacitors can be formed in serial fashion in which only one capacitor is formed in any one position of the different positions of the first and second members with respect to each other. High frequency energy is supplied to one of the conductive means so that high frequency energy can be coupled through the capacitor which is made. Electronics is coupled to the capacitor for ascertaining which capacitor has been made and for ascertaining the direction of relative movement between the first and second members and the increment of movement of the first and second members with respect to each other.
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patent: 4290065 (1981-09-01), Gleason
patent: 4303919 (1981-12-01), Dimeff
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patent: 4423417 (1983-12-01), Tanaka et al.
patent: 4504832 (1985-03-01), Conte
patent: 4543526 (1985-09-01), Burckhardt et al.
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