2990157

Information

• Patent Grant
• 2990157

• References
• Source

• Patent Number

  2,990,157

• Date Filed

  Not available

• Date Issued

  Tuesday, June 27, 1961
  63 years ago

• CPC

  • E21B19/00 - Handling rods, casings, tubes or the like outside the borehole
  • Y10T74/19181 - toothed gear and recirculated unconnected elements
  • Y10T74/19712 - Threadless
  • Y10T74/19749 - Recirculating rolling elements

• US Classifications

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