Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
December 20, 2011
Patent Application Number
12890240
Date Filed
September 24, 2010
Patent Citations Received
Patent Primary Examiner
Patent abstract
A device comprises a spring and a sleeve. The spring is configured to form a closed loop. The spring is moveable between a coiled configuration when the spring is collapsed and an uncoiled configuration when the spring is expanded. The spring defines a circumference while in the uncoiled configuration. The spring is disposed within the sleeve.
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