3721882

Information

• Patent Grant
• 3721882

• References
• Source

• Patent Number

  3,721,882

• Date Filed

  Not available

• Date Issued

  Tuesday, March 20, 1973
  51 years ago

• CPC

  • G05D3/1445 - with a plurality of loops
  • G05B19/232 - with speed feedback only
  • G05B19/39 - using a combination of the means covered by at least two of the preceding sub-groups G05B19/21, G05B19/27, and G05B19/33
  • G11B5/5547 - "Seek" control and circuits therefor
  • G11B5/5556 - with track following after a "seek"
  • G05B2219/42114 - Loop mode, dual mode incremental coarse, analog fine
  • G05B2219/43179 - Speed changes gradualy from constant value to zero

• US Classifications

  • 360 - Dynamic magnetic information storage or retrieval
  • 318 - Electricity: motive power systems
  • G9B - INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER