3151820

Information

• Patent Grant
• 3151820

• References
• Source

• Patent Number

  3,151,820

• Date Filed

  Not available

• Date Issued

  Tuesday, October 6, 1964
  60 years ago

• CPC

  • G11B15/56 - the record carrier having reserve loop
  • G03B21/43 - Driving mechanisms
  • G11B15/34 - through non-skip drive means
  • G11B15/43 - Control or regulation of mechanical tension of record carrier
  • G11B15/46 - Controlling, regulating, or indicating speed
  • H02P5/485 - using differential movement of the two motors

• US Classifications

  • 242 - Winding, tensioning, or guiding
  • 318 - Electricity: motive power systems
  • G9B - INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER