Communications: electrical – Selective – Having indication or alarm
Patent
1983-03-10
1985-10-29
Caldwell, Sr., John W.
Communications: electrical
Selective
Having indication or alarm
340 87, 340 50, 340 68, 340 78, B60Q 100
Patent
active
045503044
ABSTRACT:
A system for signalling conditions of, including an emergency within, a vehicle comprises a main housing mountable on the vehicle at a location visible from substantially all lateral points. A warning light is mounted within the housing and light which it generates is projected from the housing by an optical system as a plurality of substantially collimated beams each of which is oblique with respect to the major axis of the vehicle. A switch for actuating the warning light is located within the vehicle for unobtrusive operation. The system also includes additional signal lights for signalling different conditions of the vehicle and circuitry which prevents simultaneous operation of certain of the signal lights that have contradictory meanings.
REFERENCES:
patent: 1857210 (1932-05-01), Nelson et al.
patent: 2029211 (1936-01-01), Adler
patent: 2478178 (1949-08-01), Brasington et al.
patent: 2814028 (1957-11-01), Hamilton
patent: 3349280 (1967-10-01), Siiberg
patent: 3786414 (1974-01-01), Dressayre
patent: 4259664 (1981-03-01), Boisclair
patent: 4384271 (1983-05-01), Visser
Caldwell Sr. John W.
Queen Tyrone
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