Windproof billboard

Details Windproof billboard Windproof billboard

2011-05-31

2011-05-31

Silbermann, Joanne (Department: 3611)

Card, picture, or sign exhibiting

Signs

Billboard type

C248S284100

Reexamination Certificate

active

07950174

ABSTRACT:
A windproof billboard, including at least a body, a pair of first supports, multiple second supports, a rotating shaft, multiple linkage mechanisms, a transmission mechanism, a power mechanism, and at least one brake, wherein the first supports and the second supports are disposed on the ground, the bottom of the body is hinge connected to the first supports, the linkage mechanisms are hinge connected an upper part of the back of the body and fixed on the rotating shaft, and operate to drive the body to rotate with respect to the first supports, the rotating shaft abuts against one of the second supports, the power mechanism is fixed on the transmission mechanism and operates to drive the rotating shaft to rotate via the transmission mechanism, and the brake is disposed on one of the second supports and operates to fix the rotating shaft.

REFERENCES:
patent: 2221606 (1940-11-01), Piacentini
patent: 2746187 (1956-05-01), Ennever
patent: 3235214 (1966-02-01), Sprung
patent: 6886701 (2005-05-01), Hong et al.

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