Signal generating device

Details Signal generating device Signal generating device

1988-12-02

1992-02-04

Oberley, Alvin

Communications: electrical

Land vehicle alarms or indicators

Internal alarm or indicator responsive to a condition of the...

340706, 338128, G05G 904

Patent

active

050862960

ABSTRACT:
An X-Y signal generating device comprises two belts (11,11') extending between and around two pairs of rollers (12,13) and (12',13'). One band moves in the X-direction and one in the Y-direction, and one band is located inside the other. The rollers are mounted on a common block (14). Each band has a strengthened section (17,17') with a slot (18,18') in it. An actuating key (21) is located at the crossover point of the two slots and may be moved freely in any direction, within limits, causing proportionate movement of the two bands around the rollers. XY control signals can be derived independently from the movement of the bands. The XY control signals can be produced by providing the bands with combined resistive/conductive surfaces and using conductive rollers to pass a current through the bands.

REFERENCES:
patent: 3701963 (1972-10-01), Kasazima
patent: 4459578 (1984-07-01), Sava et al.
patent: 4692756 (1987-09-01), Clark
patent: 4782327 (1988-11-01), Kley et al.

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