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US 2007/0181862 A1Published application
Hoist Assembly
AssigneeTiffin Scenic Studios, Inc.
InventorBrad Hossler
Life of this patent
Estimating the term…
Abstract
A hoist assembly for raising and lowering a load uses a plurality of flat tensile members and spool drums. A modular hoist system can be adapted to various configurations by mounting a plurality of hoist assemblies in combination.
Claims15
A hoist assembly for raising and lowering a load comprising:
- a frame comprising a plurality of support members;
- a gear motor mounted to said frame;
- a drive shaft coupled to said gear motor;
- at least one spool drum mounted on said drive shaft, said spool drum having a disk portion and a hub portion, said hub portion having an aperture configured such that said hub portion is disposed about said drive shaft;
- and
- an end plate fixed to said hub portion opposite to and spaced from said disk portion.
3 more elements
A hoisting system for raising and lowering a load adapted to be affixed to a structure comprising:
- at least one hoist assembly comprising
- a frame comprising a plurality of support members,
- a gear motor mounted to said frame,
- a drive shaft coupled to said gear motor,
- at least one spool drum mounted on said drive shaft, said spool drum having
- a disk portion and
- a hub portion, said hub portion having
- an aperture configured such that said hub portion is disposed about said drive shaft,
- a cuneal aperture disposed within said hub portion configured to receive a dead-off, and
- a slot within said hub portion extending from a tip of said cuneal aperture to the outer edge of said hub portion, wherein said cuneal aperture and said slot cooperate to secure a flat tensile member to said hub portion;
- an end plate fixed to said hub portion opposite to and spaced from said disk portion;
- at least one loft block assembly mounted to the structure spaced from said hoist assembly;
- and
- a connector adapted to secure said flat tensile member to a load.
11 more elements
Dependencies are inferred from the claim text.