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
2006-05-23
2006-05-23
Marcelo, Emmanuel M (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
C254S335000, C212S296000, C212S299000, C212S306000, C212S348000
Reexamination Certificate
active
07048257
ABSTRACT:
A portable winch suitable for use in underground pipe bursting and replacement includes a mounting frame positionable at a top opening of a hole such as a receiving pit or manhole. A telescoping mast having a series of nested, top and bottom mast sections is mounted on the frame. A powered winch unit, also mounted on the frame, includes a drive unit and a cable. A guide assembly includes a sheave that guides the cable from the drive unit to the bottom mast section. Suitable means are connected to the frame for mechanically raising and lowering the mast into and out of the hole. As such, the mast according to the invention does not require assembly or disassembly at the beginning and end of each job. The mechanical means for raising and lowering the mast is preferably the powered winch unit.
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Vermeer Hydroguide Winches, www.vermeer.com/equipment/hydroquide, Vermeer Manuafacturing Company, 1 page.
Hau Paul W.
Wentworth Steven W.
Earth Tool Company L.L.C.
Marcelo Emmanuel M
Meyers Philip G.
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