1640149

Information

• Patent Grant
• 1640149

• References
• Source

• Patent Number

  1,640,149

• Date Filed

  Not available

• Date Issued

  Tuesday, August 23, 1927
  97 years ago

• CPC

  • H04R23/004 - using ionised gas
  • F16H61/00 - Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
  • F16H2710/18 - the control being mechanical
  • Y10T74/19609 - Governor control

• US Classifications

  • 074 - Machine element or mechanism