Supports – Staff type – Stand or base
Patent
1995-06-20
1996-07-16
Chin-Shue, Alvin O.
Supports
Staff type
Stand or base
248526, A47G 3312
Patent
active
055359779
ABSTRACT:
A cylindrical shaped element supporting structure that includes an inverted vertically arranged hollow open top frustum-shaped container, knurling circumferentially disposed on the outer surface of the inverted vertically arranged hollow open top frustum-shaped container, at least three supporting stand legs vertically slidably mounted to the inverted vertically arranged hollow open top frustum-shaped container, and at least three crescent-shaped locking levers each of which being vertically pivotally mounted to a respective one of the at least three supporting stand legs. When the cylindrical shaped element is placed in the inverted vertically arranged hollow open top frustum-shaped container the weight of the cylindrical shaped element causes the inverted vertically arranged hollow open top frustum-shaped container to slide downwardly along the at least three supporting stand legs. The at least three crescent-shaped locking levers pivot upwardly allowing the lower end of each of the at least three crescent-shaped locking levers to ride upwardly and outwardly on the inverted vertically arranged hollow open top frustum-shaped container outer surface. Each upper end of the at least three crescent-shaped locking levers contacts the cylindrical shaped element. The crescent-shaped locking lever lower ends engage the knurling and prevent the at least three crescent-shaped locking levers from further pivoting. The cylindrical shaped element is stabilized in a self-locking fashion.
REFERENCES:
patent: 1714498 (1929-05-01), Danner
patent: 2459533 (1949-01-01), Irvin
patent: 2679994 (1954-06-01), Mellen
patent: 3885763 (1975-05-01), Blom
patent: 4261138 (1981-04-01), St. George Syms
patent: 4313588 (1982-02-01), Sjostrand
patent: 4565028 (1986-01-01), Stephan
patent: 4571882 (1986-02-01), Capen
Berger Derek J.
Chin-Shue Alvin O.
Miller Richard L.
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