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
2007-10-30
2008-08-12
Marcelo, Emmanual 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
C254S273000, 26, 26, 26, C248S329000
Reexamination Certificate
active
07410150
ABSTRACT:
An improved hoist for raising and lowering a weighted object secured to a hoist cable, wherein the improvement comprises a safety switch in series with an up-down switch of the hoist. The safety switch has an actuating member with spaced-apart first and second portions on either side of the hoist cable and proximate the take-up shaft of the winch, and, when the hoist cable becomes unweighted or becomes wound upon the take-up shaft in an improper direction, the hoist cable moves the actuating member and prevents the up-down switch from applying power to the winch motor, thereby disabling the winch motor.
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Marcelo Emmanual M
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