Communications: electrical – Digital comparator systems
Patent
1977-07-11
1978-09-26
Caldwell, Sr., John W.
Communications: electrical
Digital comparator systems
340 84, 40564, 362196, 362226, 362362, 362374, E01F 900
Patent
active
041174569
ABSTRACT:
A housing for traffic signal lamps employs modular building block units with a minimum number of different components, which can be combined together to form a variety of configurations. A basic half section unit is used to form the individual lamp housings. This half section unit is in the form of a tray having an internal rib structure and an external rib on the front surface for stiffening, a pair of such units being joined together to form a container for a traffic lamp. An aperture is formed in the front wall of the container for passing the light from the lamp, there being a door wth a mating aperture formed therein removably latched to a hinge pin structure formed on the front wall of the container. This hinge pin structure and the latching mechanism on the door are arranged to permit either right or left hand opening of the door. A plurality of the signal lamp units can be stacked as desired to form a composite signal lamp display with the individual units being joined together to form an assembly along with a back plate which fits into retaining channels formed along the side edges of the individual container units.
REFERENCES:
patent: 2534992 (1950-12-01), Reid
patent: 3706070 (1972-12-01), Eikenberry
patent: 3991400 (1976-11-01), Beuhler
patent: 3999160 (1976-12-01), McDonnell
Caldwell Sr. John W.
Crosland Donnie L.
Econolite Control Products Inc.
Sokolski Edward A.
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