3856355

Information

• Patent Grant
• 3856355

• References
• Source

• Patent Number

  3,856,355

• Date Filed

  Not available

• Date Issued

  Tuesday, December 24, 1974
  50 years ago

• CPC

  • E02F3/8816 - Mobile land installations
  • E02F3/88 - with arrangements acting by a sucking or forcing effect
  • E02F3/9206 - Digging devices using blowing effect only, like jets or propellers
  • E02F3/9231 - Suction wheels with axis of rotation parallel to longitudinal axis of the suction pipe
  • E02F3/9243 - Passive suction heads with no mechanical cutting means
  • E02F3/925 - with jets
  • E02F3/9275 - with axis of rotation parallel to longitudinal axis of the suction pipe
  • E21B4/02 - Fluid rotary type drives
  • E21B7/12 - Underwater drilling
  • E21B7/24 - Drilling using vibrating or oscillating means
  • E21B27/00 - Containers for collecting or depositing substances in boreholes or wells
  • E21C50/00 - Obtaining minerals from underwater, not otherwise provided for

• US Classifications

  • 299 - Mining or in situ disintegration of hard material
  • 175 - Boring or penetrating the earth