Disk pack bottom cover with magnetic latch

In a disk pack, a bottom cover comprising:

• a bottom wall, an inverted channel member having top wall and side walls with the side walls secured to the upper surface of the bottom wall, said channel member defining with this bottom wall a housing for a magnetic latching element, a group of spaced apart slots in the top wall of the channel member, a group of spaced apart pole pieces equal in number to the number of slots and disposed in the housing and registering with the slots,
• and a magnet disposed in the housing and energizing the pole pieces.

A disk pack bottom cover comprising a bottom wall and a hollow ring mounted on the bottom wall, said ring having means defining integral side walls secured to the bottom wall and defining with the bottom wall a substantially closed housing having a top wall, a plurality of groups of parallel slots formed in the top wall of the ring, a magnet assembly associated with each group of slots, said assemblies including pole pieces disposed in the housing and registering with and extending through the slots, each of said assemblies also including permanent magnets disposed between the pole pieces and beneath the top wall of the ring, and means for securing the magnet assemblies together.

A disk pack bottom cover comprising a bottom wall and a ring mounted on the bottom wall, a plurality of groups of parallel slots formed in the ring, a magnet assembly associated with each group of slots, said assemblies including pole pieces disposed beneath the ring and registering with and extending through the slots, each of said assemblies also including permanent magnets disposed between the pole pieces and beneath the ring, and means for securing the magnet assemblies together,

• each of the plates having one long side edge extending through a slot in the ring,
• and shoulders provided at the ends of the plates and disposed beneath the ring for retaining the assemblies beneath the ring.

A disk pack bottom cover comprising a bottom wall and a ring mounted on the bottom wall, a plurality of groups of parallel slots formed in the ring, a magnet assembly associated with each group of slots, said assemblies including pole pieces disposed beneath the ring and registering with and extending through the slots, each of said assemblies also including permanent magnets disposed between the pole pieces and beneath the ring, and means for securing the magnet assemblies together,

• each plate having parallel side edges with each edge being adapted to extend through a slot in the ring,
• and shoulders formed at each end of each edge of each plate so that when the bottom cover is assembled, each edge may be positioned to register with and extend through a slot and the shoulders may secure the plates to the ring.