Communications: electrical – Continuously variable indicating – With particular transmitter
Patent
1981-06-19
1983-09-06
Swann, III, Glen R.
Communications: electrical
Continuously variable indicating
With particular transmitter
324 61R, 340686, G08C 2100
Patent
active
044032196
ABSTRACT:
An oscillator operating within the frequency and with the wave shape selected for the operation of the device cooperates with transmitter strips of a length of the desired distance of indication of the movement and formed, e.g., in the way of printed circuits as connected to the said oscillator, as well as corresponding receiver strips as connected to a differential amplifier, e.g. to the amplifier of an integrated circuit. Hereinafter it is possible, by means of the indicator, to indicate a connecting together of the transmitter strips and the receiver strips by means of mobile plates placed on the device whose position is supposed to be indicated. According to the invention, the transmitter strips and the receiver strips are formed in such a way in pairs that the mobile plates, when placed on one side of the indication point, connect a certain one of the transmitter strips with a certain one of the receiver strips but, after the mobile plates have moved to the other side of the indication point, this connection has become opposite.
REFERENCES:
patent: 2948890 (1960-08-01), Barth et al.
patent: 3340400 (1967-09-01), Quittner
patent: 3702957 (1972-11-01), Wolfendale
patent: 3815021 (1974-06-01), Kerr
patent: 3938113 (1976-02-01), Dobson et al.
Eflab Oy
Swann III Glen R.
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