Coil edge protection from lifting device
AssigneeArmco Inc.
InventorWilliam K. Moyer
Life of this patent
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Abstract
A coil lifter (26) adapted for being suspended from an overhead crane for lifting a coil (10) of strip material having a central opening (14). The lifter includes a vertical lifting arm (28), an upper portion (34), a lower portion (36), a lifting surface (42) on the lower arm portion for being inserted into and contacting a curvature (44) of the central opening of the coil. The lifting arm includes a facing surface (30) adjacent to a coil edge (16, 18), side surfaces (32, 33) and a pair of spaced apart rollers (46, 48) made from an elastic laminated material (72) for preventing damage to the edge of the coil. The rollers are rotatably supported by the lifting arm so that an annular outer surface (50) of each roller extends to a position between the coil edge and the facing surface.
Claims14
A lifter for transporting a coil of strip material having a central opening, comprising:
- a coil lifter for being suspended from an overhead crane,
- the coil lifter including a lifting arm for being inserted into the central opening of the coil and a wheel for preventing damage to a coil edge when the lifting arm is inserted into the central opening,
- an annular outer surface of the wheel being a laminated material radiating outwardly from a center of the wheel,
- the lifting arm including at least two vertically extending surfaces and a lifting surface,
- one of the vertically extending surfaces adjacent to the coil edge,
- the wheel being rotatably mounted to the other vertically extending surface of the lifting arm wherein the annular outer surface of the wheel is positioned between the coil edge and the one surface thereby preventing the one surface from making inadvertent contact with the coil edge.
A lifter for transporting a coil of strip material having a central opening, comprising:
- a coil lifter for being suspended from an overhead crane,
- the coil lifter including a vertical lifting arm having a lower potion for being inserted into the central opening of the coil and a pair of spaced apart wheels for preventing damage to a coil edge when the lower portion is inserted into the central opening,
- the lifting arm including at least two juxtaposed vertically extending surfaces, another vertically extending surface intermediate the juxtaposed surfaces and a lifting surface on the lower portion,
- the intermediate surface adjacent to the coil edge,
- each wheel having a laminated outer surface radiating outwardly from a center of the wheel and one of the wheels being rotatably mounted to one of the juxtaposed surfaces and the other of the wheels being rotatably mounted to the other of the juxtaposed surfaces of the lifting arm wherein the outer surface of the wheels is positioned between the toil edge and the intermediate surface thereby preventing the intermediate surface from making inadvertent contact with the coil edge.
A lifter for transporting a coil of strip material having a central opening, comprising:
- a coil lifter for being suspended from an overhead crane,
- the coil lifter including a vertical lifting arm having a lower portion for being inserted into the central opening of the coil, a pair of spaced apart off-set wheels for preventing damage to a coil edge when the lower portion is inserted into the central opening and a frame for supporting the wheels,
- the lifting arm including a facing surface adjacent to the coil edge and a lifting surface on the lower portion,
- each wheel having a laminated elastic outer surface radiating outwardly from a center of the wheel and being rotatably mounted to the frame wherein the outer surface
- of the wheels is positioned between the coil edge and the facing surface thereby preventing the facing surface from making inadvertent contact with the coil edge.
Dependencies are inferred from the claim text.