Indication system

Details Indication system Indication system

1977-03-16

1978-12-26

Pitts, Harold I.

Communications: electrical

Audible indication

Percussion-type sound producer

340 52F, 340518, G08B 1900

Patent

active

041318862

ABSTRACT:
An indication system for indicating abnormal conditions on an indication drum. A rotary switch having a plurality of stationary contacts connected to a plurality of sensors and a movable contact connected to the indication drum is provided to control the rotation of the indication drum. Receiving an output signal of one of the sensors, the rotary switch rotates together with the indication drum until the movable contact comes into contact with one of the stationary contacts to which the output signal is applied. The indication drum, then, indicates one abnormal condition represented by this output signal. A manually-operated switch is further provided to forcibly rotate the movable contact. When the manually-operated switch is activated, the movable contact is caused to slide over the stationary contacts so as to detect another output signal representing another abnormal condition to be indicated.

REFERENCES:
patent: 3925752 (1975-12-01), Jensen
patent: 3936799 (1976-02-01), Hynes
patent: 3987439 (1976-10-01), Spaniola
patent: 4034336 (1977-07-01), Arai

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