Device for the display of data representative of quantities

Communications: electrical – Audible indication – Ultrasonic pest control

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340366F, G08B 500

Patent

active

042019818

ABSTRACT:
A display instrument for aircraft wherein a representation of a data value is recorded and indicated by the position of an illuminated bar alongside a graduated scale. A number of bars are located along the scale, each bar being formed by the emitting end of a respective bundle of optical fibres. A particular bundle is illuminated to illuminate its bar according to a digital value stored in a counting register. This value is variable by the manual rotation of a knob driving an apertured disc so that each time a light beam passes through an aperture as the disc rotates, the beam is incident on an opto-electronic receiver, thus, providing a signal which changes the value stored in the counting register.

REFERENCES:
patent: 3506836 (1970-04-01), Rueger
patent: 3638215 (1972-01-01), Payne
patent: 3647986 (1972-03-01), Lace
patent: 3726250 (1973-04-01), Merk

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