Drive rope and drive pulley
AssigneeJ.R. Clancy, Inc.
InventorStephen J. Kochan
Life of this patent
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Abstract
The present invention discloses a drive system for theatrical rigging, comprising a drive rope and a drive pulley. The drive rope has a fiber or cable core, surrounded by a plastic jacket. Formed on or in the surface of the drive rope are traction features that engage corresponding grooves in the drive pulley.
Claims11
A drive rope for use in a theatrical rigging system, the drive rope comprising:
- a linear core of flexible material;
- a flexible jacket surrounding said core;
- and
- a plurality of traction elements formed in said plastic jacket.
A drive pulley for use in a power assisted counterweight rigging system, the pulley having a U-shaped groove proximate its perimeter, for receiving a drive rope with traction elements formed on its surface, said U-shaped groove comprising a plurality of traction elements corresponding to the traction elements of the drive rope.
A drive system for a theatrical rigging system, said system comprising:
- a drive rope having:
- a flexible linear core;
- a flexible jacket surrounding said core;
- and
- a plurality of traction elements formed in said flexible jacket;
- and
- a drive pulley having a U-shaped groove for engaging and moving said drive rope, said U-shaped groove comprising a plurality of traction elements corresponding to the traction elements of said drive rope.
Dependencies are inferred from the claim text.