3813678

Information

• Patent Grant
• 3813678

• References
• Source

• Patent Number

  3,813,678

• Date Filed

  Not available

• Date Issued

  Tuesday, May 28, 1974
  50 years ago

• CPC

  • G11B5/004 - Recording on, or reproducing or erasing from, magnetic drums
  • G11B5/54 - with provision for moving the head into or out of its operative position or across tracks
  • G11B5/5591 - across drum tracks
  • G11B5/56 - with provision for moving the head support for the purpose of adjusting the position of the head relative to the record carrier
  • G11B5/58 - with provision for moving the head for the purpose of maintaining alignment of the head relative to the record carrier during transducing operation
  • G11B23/50 - Reconditioning of record carriers Cleaning of record carriers; Carrying-off electrostatic charges
  • G11B25/02 - using cylindrical record carriers

• US Classifications

  • 346 - Recorders
  • 360 - Dynamic magnetic information storage or retrieval
  • G9B - INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER