Variable character display device

Details Variable character display device Variable character display device

1976-10-12

1978-09-26

Pitts, Harold I.

Communications: electrical

Audible indication

Percussion-type sound producer

340373, 340381, 340336, G08B 526

Patent

active

041174780

ABSTRACT:
A variable character display device includes a base plate on which is a multiplicity of variable segment display mechanisms. Each mechanism comprises a substantially flat display segment carried by a rotatable arm. A magnet secured to the arm is magnetically rotated by an electrically energized coil which creates a magnetic circuit through two magnetizable poles respectively disposed adjacent to opposite sides of the magnet. The mechanism is housed in a casing which is trapezoidal in axial section so that the display face of the segment is wholly concealed when the display segment is in retracted position. Abutments on a frame are used to stop rotation of the arm in a retracted position, and in a display position. The device dispenses with the usual face plate and mask so that the entire display faces of the segments are exposed when a character is displayed.

REFERENCES:
patent: 3273270 (1966-09-01), Skrobisch
patent: 3678426 (1972-07-01), Pihl
patent: 3886545 (1975-05-01), Skrobisch
patent: 4024532 (1977-05-01), Sherwin

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