2973941

Information

• Patent Grant
• 2973941

• References
• Source

• Patent Number

  2,973,941

• Date Filed

  Not available

• Date Issued

  Tuesday, March 7, 1961
  64 years ago

• CPC

  • B66D1/06 - Safety cranks for preventing unwanted crank rotation and subsequent lowering of the loads
  • B66D1/34 - Attachment of ropes or cables to drums or barrels
  • Y10S242/903 - Drum for a winch or hoist
  • Y10T74/18832 - including flexible drive connector [e.g., belt, chain, strand, etc.]

• US Classifications

  • 242 - Winding, tensioning, or guiding
  • 074 - Machine element or mechanism
  • 254 - Implements or apparatus for applying pushing or pulling force