Miniature telltale module

Details Miniature telltale module Miniature telltale module

1993-05-03

1995-08-15

Hjerpe, Richard

Communications: electrical

Visual indication

Electromagnetic rotator for indicator wheel

34081567, 40426, 335272, G08B 500

Patent

active

054423384

ABSTRACT:
A miniature telltale module which combines a plurality of telltale functions into one unit and provides reduced cost per function. The module uses a miniature rotary actuator, a series of interconnected images and a single light source. The actuator allows a wide tolerances at the inputs while still precisely selecting the image positions. The actuator has a unique locking device (or brake) which automatically engages when power is removed. This feature allows the control circuitry to select an image with a momentary pulse and then remove the power from the actuator. Power consumption is thereby minimized since no power is required by the device except when changing the image to be displayed.

REFERENCES:
patent: 1823319 (1931-09-01), Dickinson
patent: 3375512 (1968-03-01), Watkins et al.
patent: 3660814 (1972-05-01), Fales
patent: 3835450 (1974-09-01), Reck
patent: 3839701 (1974-10-01), Pomerantz
patent: 3936799 (1976-02-01), Hynes
patent: 4182059 (1980-01-01), Greene
patent: 4446810 (1984-05-01), Bressi
patent: 5028900 (1991-07-01), DeWitt
patent: 5084698 (1992-01-01), Sell
SAE Techical Paper #930550 Miniature Telltale Module-Author Dave Ehle, Mar. 1, 1993, SAE.

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