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
2008-08-23
2010-12-14
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
C254S296000
Reexamination Certificate
active
07850147
ABSTRACT:
This boat lift drive is used for raising and lowering a wide range of boat size. The boat drive is a two stage worm system and uses a drive motor having a motor shaft driving a first worm and a first worm wheel as a first stage, and driving a second worm and a second worm wheel, as second stage. At least one of said worm shafts has a copper alloy intermediate worm portion. A third stage is provided having a spool driven by the second worm wheels, the spool having a cable disposed thereabout for lifting the boat.
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Marcelo Emmanuel M
Polster Lieder Woodruff & Lucchesi L.C.
Superior Gearbox Company
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