(under subclass 213) Devices wherein the magnetic attracting
element or elements are in rotating disk form or form part of a disk, the disk being rotated.
(1) Note. Disks which operate as shields or conveyors adjacent magnetic elements not of rotary disk type, which disks do not include a magnetic or magnetized portion, are not included. The subclass will include a series of open-spaced magnetic elements arranged to define a disk and rotated.
