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Class Information
Number:
254/316
Name:
Implements or apparatus for applying pushing or pulling force
>
Apparatus for hauling or hoisting load, including driven device which contacts and pulls on cable
>
Device includes rotatably driven, cable contacting drum
>
Plural drums or drum with plural distinct sections
>
Having common drive source or mechanically interlinked drive trains
> Including electric motor in drive
Description:
Apparatus wherein the common drive source includes a motor of the kind operated solely by electricity.
Patents under this class:
Patent Number
Title Of Patent
Date Issued
7353913
Elevator hoisting machine and motor
Apr. 8, 2008
6874763
Driving device for the traction of cables or chains
Apr. 5, 2005
6089547
Method and apparatus for winch upgrading
Jul. 18, 2000
5631511
Gear motor with an electric motor having a hollow shaft
May. 20, 1997
5607142
Lifting apparatus
Mar. 4, 1997
5167401
Hoist drive and method for driving a double hoist carrying apparatus
Dec. 1, 1992
4438903
Obstacle detector for a descending or ascending load
Mar. 27, 1984
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