Implements or apparatus for applying pushing or pulling force – Apparatus for hauling or hoisting load – including driven... – Device includes rotatably driven – cable contacting drum
Reexamination Certificate
2005-05-10
2005-05-10
Marcelo, Emmanuel (Department: 3654)
Implements or apparatus for applying pushing or pulling force
Apparatus for hauling or hoisting load, including driven...
Device includes rotatably driven, cable contacting drum
C254S347000, C254S365000
Reexamination Certificate
active
06889958
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, Philadelphia, PA. Dec. 15, 1999.
English Abstract of publication DE 37 37 612.
English Abstract of publication DE 42 04 153.
English Abstract of publication EP 0 540 136.
English Abstract of publication EP 0 778 239.
English Abstract of publication FR 2 689 415.
Aceto, Esq. Roger
Harter Secrest & Emery LLP
Marcelo Emmanuel
Shaw Esq. Brian B.
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