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US 7,114,613 B2Granted
Article unscrambler with high speed tapered roller
AssigneeDematic Corp.
InventorsGerald A Brouwer, James P Johnson
Life of this patent
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Abstract
An unscrambler conveyor including a frame, a plurality of tapered rollers rotatably supported by the frame for unscrambling packages, and means for driving the rollers. Each of the rollers has a longitudinal axis and a polyurethane body that extends along the longitudinal axis to form a tapered outer surface. The tapered outer surfaces of the rollers define a conveying surface and have variations in concentricity of less than 0.01 inches.
Claims21
An unscrambler conveyor assembly comprising:
- a frame;
- a plurality of tapered rollers rotatably supported by said frame for unscrambling packages, each of said rollers having a first end, a second end, a longitudinal axis, and a longitudinal extent extending along said longitudinal axis from approximate said first end to approximate said second end, each of said rollers having a base and a unitary polyurethane body extending along said longitudinal axis across said longitudinal extent, said base having an outer surface, said unitary polyurethatne body having an inner surface bonded to said outer surface of said base, each of said unitary polyurethane bodies having a solid cross-section extending along said longitudinal extent to form a tapered outer surface, said tapered outer surfaces of said rollers defining a conveying surface;
- and
- means for driving said tapered rollers.
1 more element
An unscrambler conveyor assembly comprising:
- a frame;
- a plurality of tapered rollers rotatably supported by said frame, each of said tapered rollers having a first end, a second end, a longitudinal axis and a longitudinal extent extending from approximate said first end to approximate said second end, each of said tapered rollers including a base roller and a unitary polyurethane body formed without joints extending from said base roller along said longitudinal extent and forming a tapered outer surface of said tapered roller, said tapered outer surfaces defining a conveying surface;
- and
- means for driving said tapered rollers, when operated said means driving said tapered rollers at a speed of at least 900 rpm.
1 more element
An unscrambler conveyor assembly comprising:
- a frame;
- a plurality of tapered rollers rotatably supported by said frame, each of said tapered rollers having a longitudinal axis and comprising a straight base roller with an outer surface with terminal ends and a monolithic unitary polyurethane body having a solid cross-section extending from said straight base roller along said longitudinal axis from adjacent one of said terminal ends to adjacent to another of said terminal ends, each of said unitary polyurethane bodies having a thickness, said thicknesses increasing across said longitudinal axes at a generally uniform rate to form continuous tapered outer surfaces;
- and
- means for driving said tapered rollers.
1 more element
Dependencies are inferred from the claim text.