Card – picture – or sign exhibiting – Changing exhibitor – Fluid operated
Patent
1989-10-05
1990-11-27
Weiss, John
Card, picture, or sign exhibiting
Changing exhibitor
Fluid operated
40608, G09F 1102
Patent
active
049726145
ABSTRACT:
A sign carrying device. A cylindrical base section vertically mounted in a footing has an upper cylindrical section extending upwardly therefrom. A first collar extends radially outwardly between the sections for rotatably receiving a sign carrying support structure. The support structure is formed from two (2) frame members connected together by horizontal supports, one of which is connected to a second collar which is rotatably received on the first collar by providing bearings therebetween. A pulley rotatably mounted in the upper cylindrical section and dual pulleys mounted on a brace extending from the upper cylindrical section have a cable threaded over and therethrough respectively. One end of the cable is rigidly attached to the sign carrying support structure and the other end is attached to a counterweight suspended inside the axially-aligned bores of the cylindrical base section and the upper cylindrical section. This allows rotation of the support structure in response to wind pressure thereon, but returns the support structure to its first or normal position upon cessation or reduction of the wind to a predetermined torque component.
REFERENCES:
patent: 622115 (1899-03-01), Carlson
patent: 1532575 (1925-04-01), Camden
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patent: 1750118 (1930-03-01), Mueller, Jr. et al.
patent: 1825564 (1931-09-01), Whitlow
patent: 1856349 (1932-05-01), Bigelow
patent: 2417122 (1947-03-01), Pearson
patent: 4365435 (1982-12-01), Snyder, Jr.
patent: 4503631 (1985-03-01), Kelly
Bode George A.
LaHaye D. Neil
Lynch Michael
Weiss John
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