Multiple stage extensible boom

Details Multiple stage extensible boom Multiple stage extensible boom

1977-05-31

1979-05-15

Moses, Richard L.

Illumination

Plural light sources

Remote adjustment or positioning means

362 61, F21V 2122

Patent

active

RE0300004

ABSTRACT:
An extensible boom for portable lights has a two-part base. One part of the base is fixed to a trailer or other vehicle and the other part is rotatable with respect thereto about a vertical axis. Hinged to the rotatable part about a horizontal axis is a telescopic multisection boom. A first winch elevates the boom from horizontal to vertical position. A second winch controls a cable system located inside the boom sections to elevate the boom. A manually extensible top boom section may be used to increase the maximum height.

REFERENCES:
patent: 2899540 (1959-08-01), Allmand et al.
patent: 3381118 (1968-04-01), Widner
patent: 3463916 (1969-08-01), DeBella
patent: 3495364 (1970-02-01), DeBella

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