Fire escape – ladder – or scaffold – Platform with elevating or lowering means – Operating means on platform
Reexamination Certificate
2010-07-23
2011-11-15
Will, Thomas (Department: 3671)
Fire escape, ladder, or scaffold
Platform with elevating or lowering means
Operating means on platform
C280S006153, C280S006154
Reexamination Certificate
active
08056677
ABSTRACT:
This lift system serves as a powered ladder having a small footprint. The system is divided into two subchasses with a mast fixedly attached to a first subchassis for support of a liftable platform which may carry a human operator. Maneuverability is accomplished by a virtual articulating joint between the two subchasses. The joint comprises hydraulic cylinders operating in conjunction with wheel struts to form a three-point support. Articulation enables the lift system to be adjusted on sloped or uneven terrain to maintain the mast in a vertical orientation. One use of the lift system is to carry a fruit picker into an orchard or vineyard and to position the picker to work efficiently. The lift system may carry a robot and may be controlled either locally or remotely.
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O'Brien Fred K.
Roberts Roy
Frohwerk Robert A.
Misa Joan
Roberts Equipment, Inc.
Will Thomas
Your Intellectual Property Matters, LLC
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