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US 5,180,070 AGranted
Directional control system for a gantry type crane
AssigneeShuttelift, Inc.
InventorThomas H. Feider
Life of this patent
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AssigneeShuttelift, Inc.
InventorThomas H. Feider
Estimating the term…
A directional control system for a gantry type cane operable in either a longitudinal direction or a transverse direction is disclosed. The gantry type crane has first and second, spaced front wheels and first and second, spaced rear wheels. The first front wheel and the first rear wheel are on one longitudinal side of the crane, and the second front wheel and the second rear wheel are on the other longitudinal side of the crane. The control system cooperatively rotates the first and second front wheels for controlling the direction of travel of the crane in the longitudinal direction, and cooperatively rotates the first front wheel and the first rear wheel for controlling the direction of travel of the crane in the transverse direction. Thus the wheels positioned perpendicular to the direction of travel provide the steering.
A directional control system for a gantry type crane, said gantry type crane operable in either a longitudinal direction or a transverse direction, said gantry type crane further having a pair of front wheels and a pair of rear wheels as defined with respect to said longitudinal direction, said control system comprising:
A directional control system for a gantry type crane operable in either a longitudinal direction or a transverse direction, said gantry type crane having first and second, spaced front wheels and first and second, spaced rear wheels, said first front wheel and said first rear wheel being on one longitudinal side of said crane and said second front wheel and said second rear wheel being on the other longitudinal side of said crane, said control system comprising:
A directional control system for a gantry type crane operable in either a longitudinal direction or a transverse direction, said gantry type crane having first and second, spaced front wheels and first and second, spaced rear wheels, said first front wheel and said first rear wheel being on one longitudinal side of said crane and said second front wheel and said second rear wheel being on the other longitudinal side of said crane, said control system comprising:
Dependencies are inferred from the claim text.