TETHER HOIST SYSTEMS AND APPARATUSES
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United States of America Patent
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Issued Date -
Feb 24, 2011
app pub date -
Aug 18, 2010
filing date -
Aug 18, 2009
priority date (Note) -
Abandoned
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Abstract
A rigging system for raising and lowering a load includes at least one tether suspended between first and second spaced apart connection points. A hoist apparatus is selectively movable along the at least one tether and is coupled to the load so that movement of the hoist apparatus causes the raising and lowering of the load. The hoist apparatus can include drive pulleys and guide pulleys. A connection apparatus for connecting a tether to a fixed surface includes a base plate, a spring mechanism, at least at least one end plate, and a bushing member coupling the second end of the spring mechanism to the end plate. Tension on the tether causes the spring mechanism to compress and reduce distance between the end and base plates.
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