3831615

Information

• Patent Grant
• 3831615

• References
• Source

• Patent Number

  3,831,615

• Date Filed

  Not available

• Date Issued

  Tuesday, August 27, 1974
  50 years ago

• CPC

  • B64C11/50 - Phase synchronisation between multiple propellers
  • F02D25/02 - to synchronise speed
  • G01P3/40 - using stroboscopic means
  • G01P3/56 - for comparing two speeds
  • G05D13/38 - involving centrifugal governors of fly-weight type
  • Y10T137/1007 - With manual valve control
  • Y10T137/108 - Centrifugal mass type [exclusive of liquid]

• US Classifications

  • 137 - Fluid handling
  • 073 - Measuring and testing