Traffic light housing

Details Traffic light housing Traffic light housing

1975-07-18

1976-11-09

Caldwell, John W.

Communications: electrical

Digital comparator systems

340 84, 174 52R, E01F 900

Patent

active

039914003

ABSTRACT:
A traffic signal housing particularly suitable for moulding modular units frm engineering thermoplastics. The back body portion is generally cylindrical; each end portion of the cylinder is reinforced with radial webbing connecting to a coaxial inner cylinder, thus forming a stiff load transfer structure extending into the housing to a depth of about 10 percent. The peripheral edges of a one load transfer structure are shaped to mate and seal with those of an adjacent unit. Units are coupled with a pipe bolt passing through adjacent inner cylinders to place the reinforced ends under compression. Thus assembled units have a great rigidity and load may be transmitted without the undue flexing or cracking common in prior known units.

REFERENCES:
patent: 2970289 (1961-01-01), Loomis
patent: 3706070 (1972-12-01), Eikenberry

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