Main event umbrella
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United States of America Patent
Stats
-
Jan 27, 2009
Grant Date -
Mar 3, 2005
app pub date -
Aug 28, 2003
filing date -
Aug 28, 2003
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An umbrella having opposed moving hubs, one upper and one lower, to which is attached a series of spaced spars to the upper hub and a series of spaced ribs to the lower hub. The ribs are also connected one rib to one spar. An acme-threaded rod passes through an acme nut mounted on each hub, one left hand threaded and one right hand threaded, such that the rod, when connected to a drive shaft and gear motor, and actuated causes the hubs to move toward each other to close the umbrella and away from each other to open the umbrella. The umbrella is covered over by a canopy attached thereto.
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Family
International Classification(s)
Cited Art Landscape
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