| 摘要 |
An apparatus (10,10') for handling articles by magnetic attraction includes a cylindrical casing (12,12') of nonmagnetic material having upper (22,22') and lower (24,24') ports. A rotatable helix (32,32') is disposed within the casing (12,12') between the ports (22,22',24,24'). Magnetic elements (42,42') are disposed outside of the casing (12,12') for directing a magnetic field through the casing (12,12') and into the casing as the ramp (32,32') rotates. The magnetic field extends along the length of the helical ramp (32,32').
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