Elevator – industrial lift truck – or stationary lift for vehicle – Having specific load support drive-means or its control – Includes linking support cable in drive-means
Reexamination Certificate
2005-09-29
2009-08-18
Nguyen, John Q. (Department: 3654)
Elevator, industrial lift truck, or stationary lift for vehicle
Having specific load support drive-means or its control
Includes linking support cable in drive-means
C187S261000, C187S264000, C187S336000, C254S266000, C312S247000, C248S317000, C248S330100
Reexamination Certificate
active
07575098
ABSTRACT:
A lift system and method for lifting or lowering items from one level to another within a building is accomplished by providing a lift platform. An upper level support structure having an opening is configured to allow passage of the platform through the opening. The opening is suspended above a generally open area of a lower level. An upper level frame is coupled to the support structure. A winch having a motor that rotates a drum is supported by the upper level frame. A length of cable secures at one end to the winch and at the other end to the platform through a biasing member. Operation of the winch rotates the drum to wind or unwind the cable to raise or lower the platform through the open area of the lower level without any laterally adjacent support or guidance structure within the open area.
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Bergen Grady K.
Griggs Bergen LLP
Kruer Stefan
Nguyen John Q.
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