2775869

Information

• Patent Grant
• 2775869

• References
• Source

• Patent Number

  2,775,869

• Date Filed

  Not available

• Date Issued

  Tuesday, January 1, 1957
  68 years ago

• CPC

  • E02B17/0845 - with inflatable clamping rings
  • Y10T24/44068 - having gripping member actuated by fluid force
  • Y10T74/1587 - Grip features
  • Y10T74/1598 - Driven ratchet-bar and power dog

• US Classifications

  • 405 - Hydraulic and earth engineering
  • 024 - Buckles, buttons, clasps, etc.
  • 074 - Machine element or mechanism
  • 166 - Wells
  • 182 - Fire escape, ladder, or scaffold
  • 188 - Brakes
  • 254 - Implements or apparatus for applying pushing or pulling force
  • 277 - Seal for a joint or juncture
  • 294 - Handling: hand and hoist-line implements