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
2009-04-18
2010-06-08
Langdon, Evan H (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
C254S344000, C254S346000, C254S372000
Reexamination Certificate
active
07731158
ABSTRACT:
A insert type chain hoist includes a base disc having a transmission disc and a driving disc installed on a side of the base disc. The base disc includes a pivotal pillar disposed at the central position of a lateral surface of the base disc and pivotally connected to the transmission disc and the driving disc, a manual device installed on a surface of the base disc, and a driver for driving the transmission disc. The manual device includes a chain hoist drive wheel installed on the same surface of the base disc and the pivotal pillar for driving the transmission disc. The chain hoist drive wheel is connected to the manual pillar. A sleeve is sheathed onto an end of the manual pillar. A chain hoist is positioned at another end of the sleeve and away from the manual pillar. Users can use the manual device to roll a rolling door quickly and easily.
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Inno Digic Ltd.
Langdon Evan H
LandOfFree
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