Implements or apparatus for applying pushing or pulling force – Device or member for contacting and guiding moving cable – Including rotatable – cable contacting – pulley wheel element
Reexamination Certificate
2007-08-21
2007-08-21
Marcelo, Emmanuel M (Department: 3654)
Implements or apparatus for applying pushing or pulling force
Device or member for contacting and guiding moving cable
Including rotatable, cable contacting, pulley wheel element
C254S388000, C254S331000
Reexamination Certificate
active
11325401
ABSTRACT:
A lift assembly having a drum rotatably mounted to a frame and linearly translatable with respect to the frame. A plurality of head blocks are connected to the frame along a helical mounting path, wherein linear translation of the drum during takeoff or take-up maintains a predetermined fleet angle between a take off point from the drum and the head block.
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Cyclorama Batten Systems, Regional Performing Arts Center, Dec. 15, 1999.
Daktronics Hoist, Inc.
Jaeger, Esq. Hugh D.
Marcelo Emmanuel M
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