Maneuverable self-propelled cart
First Claim
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1. A maneuverable self-propelled cart comprising:
- a cart frame;
at least two drive wheels;
a drive wheel carriage adapted to rotate about a substantially vertical axis relative to said cart frame, said drive wheel carriage including, a suspension apparatus adapted to independently suspend each of said at least two drive wheels such that each of said at least two drive wheels may individually engage a ground surface;
a reversible motor coupled to each of said at least two drive wheels, said reversible motor adapted to rotatably drive said drive wheel.
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Abstract
A maneuverable self-propelled cart having a drive assembly including independently suspended drive wheels for propelling the cart over rough or uneven surfaces. The drive assembly is comprised of a drive wheel carriage having at least two drive wheels. The drive wheel carriage may include a turntable or the like adapted to rotate the carriage about a substantially vertical axis relative to the frame of the cart. Each drive wheel may be independently suspended beneath the cart frame by a suspension apparatus so as to allow each drive wheel to individually engage a ground or floor surface.
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Citations
30 Claims
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1. A maneuverable self-propelled cart comprising:
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a cart frame;
at least two drive wheels;
a drive wheel carriage adapted to rotate about a substantially vertical axis relative to said cart frame, said drive wheel carriage including, a suspension apparatus adapted to independently suspend each of said at least two drive wheels such that each of said at least two drive wheels may individually engage a ground surface;
a reversible motor coupled to each of said at least two drive wheels, said reversible motor adapted to rotatably drive said drive wheel. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A maneuverable self-propelled cart comprising:
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a cart frame;
a drive wheel carriage frame mounted to said cart frame, said drive wheel carriage frame adapted to rotate about a substantially vertical axis relative to said cart frame;
at least two drive wheel suspension arms pivotally mounted to said drive wheel carriage frame;
a reversible motor mounted to each of said at least two drive wheel suspension arms;
a drive wheel mounted to said reversible motor wherein said reversible motor rotatably drives said drive wheel, and a suspension apparatus mounted to each of said at least two drive wheel suspension arms, said suspension apparatus adapted to extend said drive wheel suspension arm beneath said carriage frame such that drive wheel engages a ground surface. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. A maneuverable self-propelled cart comprising:
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a cart frame;
a drive wheel carriage having at least two drive wheel suspension arms pivotally mounted thereto;
a turntable mounting said drive wheel carriage to said cart frame, said turntable adapted to allow rotation of said drive wheel carriage relative to said cart frame;
a reversible motor mounted to each of said at least two drive wheel suspension arms;
a drive wheel rotatably mounted to said reversible motor wherein said reversible motor rotatably drives said drive wheel; and
a suspension apparatus mounted to each of said at least two drive wheel suspension arms, said suspension apparatus adapted to support said cart frame; and
a carriage control apparatus for controlling the operation of said reversible motor. - View Dependent Claims (23, 24, 25, 26, 27, 28, 29)
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30. A maneuverable self-propelled cart comprising:
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a cart frame;
at least three swivel wheels distally mounted to said cart frame for supporting the cart;
at least two drive wheels;
a drive wheel carriage adapted to rotate about a substantially vertical axis relative to said cart frame, said drive wheel carriage including a suspension apparatus adapted to independently suspend each of said at least two drive wheels such that each of said at least two drive wheels may individually engage a ground surface;
a reversible motor coupled to each of said at least two drive wheels, said reversible motor adapted to rotatably drive said drive wheel.
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Specification