2803973

Information

• Patent Grant
• 2803973

• References
• Source

• Patent Number

  2,803,973

• Date Filed

  Not available

• Date Issued

  Tuesday, August 27, 1957
  67 years ago

• CPC

  • E21B3/06 - Adaptation of rotary draw works to drive rotary tables
  • B66D1/14 - Power transmissions between power sources and drums or barrels
  • B66D2700/0158 - Hydraulically controlled couplings or gearings
  • Y10T74/19023 - Plural power paths to and/or from gearing
  • Y10T74/19102 - Belt or chain
  • Y10T74/19856 - Laterally-spaced wheels

• US Classifications

  • 074 - Machine element or mechanism
  • 192 - Clutches and power-stop control
  • 254 - Implements or apparatus for applying pushing or pulling force