Utility cart unloading system
First Claim
Patent Images
1. A portable cart unloading device comprising:
- a frame comprising a front end and a back end and being configured to be removably attached to a top edge of a utility cart;
a hollow tube rotatably secured to the back end of the frame;
a flexible sling having a front edge and a back edge, wherein the front edge is secured to the front end of the frame and the back edge is secured to the hollow tube, such that the sling is rolled up on the hollow tube when the tube is rotated;
a tubular motor arranged within the hollow tube and connected at one end to the frame and comprises a shaft rigidly connected to the hollow tube to rotate the hollow tube; and
a switch wired to the tubular motor to control rotation of the hollow tube;
wherein the sling has a length from the front edge to the back edge that permits the sling to line the utility cart when completely unrolled, and to span a distance between the front and back ends of the frame when completely rolled up on the hollow tube.
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Accused Products
Abstract
A utility cart unloading system that is both functional and necessary. A canvas sling is attached to a steel tube which is installed into a frame that fits on the top rim of a cart. Rotation clockwise/counterclockwise of the steel tube is provided by an electrical tubular motor and controlled by a rocker switch. Lifting of the contents of a cart is provided by winding one side of a canvas sling around the steel tube. The other side of the canvas sling is attached to the frame opposite the steel tube.
17 Citations
21 Claims
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1. A portable cart unloading device comprising:
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a frame comprising a front end and a back end and being configured to be removably attached to a top edge of a utility cart;
a hollow tube rotatably secured to the back end of the frame;
a flexible sling having a front edge and a back edge, wherein the front edge is secured to the front end of the frame and the back edge is secured to the hollow tube, such that the sling is rolled up on the hollow tube when the tube is rotated;
a tubular motor arranged within the hollow tube and connected at one end to the frame and comprises a shaft rigidly connected to the hollow tube to rotate the hollow tube; and
a switch wired to the tubular motor to control rotation of the hollow tube;
wherein the sling has a length from the front edge to the back edge that permits the sling to line the utility cart when completely unrolled, and to span a distance between the front and back ends of the frame when completely rolled up on the hollow tube. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 21)
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13. A portable automatically unloading utility cart system comprising:
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a utility cart having a front wall, a back wall, and two side walls connecting the front and back walls;
a hollow tube rotatably secured to the back wall;
a flexible sling having a front edge and a back edge, wherein the front edge is secured to the front wall of the utility cart and the back edge is secured to the hollow tube, such that the sling is rolled upon the hollow tube when the tube is rotated;
a tubular motor arranged within the hollow tube and connected at one end to the back or side wall of the utility cart and comprises a shaft rigidly connected to the hollow tube to rotate the hollow tube; and
a switch wired to the tubular motor to control rotation of the hollow tube;
wherein the sling has a length from the front edge to the back edge that permits the sling to line the utility cart when completely unrolled, and to span a distance between the front and back walls of the cart when completely rolled up on the hollow tube. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
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Specification