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Sliding Auter Shunt Sleeve Pole Piece

IP.com Disclosure Number: IPCOM000052068D
Original Publication Date: 1981-Apr-01
Included in the Prior Art Database: 2005-Feb-11

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Graham, SM [+details]


The apparatus shown in Figs. 1 and 2 functions to magnetically couple an assembly 10 to a magnetic tape reel 11 to permit rotary motion. The magnetic coupling arrangement prevents stray flux from magnet 13 from adversely affecting the tape on reel 11. A metal disk member 14 is attached to the bottom of the reel. The movement of magnet 13 by magnet support member 15 in an axial direction positions the magnet 13 in an attracting relationship with member 14 while the outer cylindrical shunt sleeve 16 prevents stray flux from magnet 13 from affecting the magnetic tape.