Blow-through pivotal sign

Details Blow-through pivotal sign Blow-through pivotal sign

1982-09-29

1985-03-12

Swiatek, Robert P.

Card, picture, or sign exhibiting

Signs

With wind spilling feature

40613, G09F 700

Patent

active

045036314

ABSTRACT:
A blow-through pivotal sign for preventing damage to advertising structures are the like. The blow-through pivotal sign comprises a signboard attached to a support structure to allow the signboard to rotate along a horizontal or vertical axis. The blow-through pivotal sign also comprises a mechanism for retaining the signboard in a fixed position until a preselected torque due to windload is applied as well as a wind responsive retractor for retracting the retaining mechanism to prevent damage thereto after the signboard has been deflected from the fixed position and is swinging freely.

REFERENCES:
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patent: 3521390 (1970-07-01), Carlson
patent: 3638341 (1972-02-01), Holmes
patent: 3662482 (1972-05-01), Sarkisian
patent: 3899843 (1975-08-01), Doyle et al.

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