1795548

Information

• Patent Grant
• 1795548

• References
• Source

• Patent Number

  1,795,548

• Date Filed

  Not available

• Date Issued

  Tuesday, March 10, 1931
  94 years ago

• CPC

  • B66F3/08 - screw operated
  • B66F19/00 - Hoisting, lifting, hauling or pushing, not otherwise provided for
  • E21D11/40 - Devices or apparatus specially adapted for handling or placing units of linings or supporting units for tunnels or galleries
  • E21D15/26 - with screw, worm, or the like, not self-locking but normally prevented from rotation by friction members which slip upon excessive pressure

• US Classifications

  • 254 - Implements or apparatus for applying pushing or pulling force