3718316

Information

• Patent Grant
• 3718316

• References
• Source

• Patent Number

  3,718,316

• Date Filed

  Not available

• Date Issued

  Tuesday, February 27, 1973
  51 years ago

• CPC

  • E21B19/09 - specially adapted for drilling underwater formations from a floating support using heave compensators supporting the drill string
  • B66C13/02 - Devices for facilitating retrieval of floating objects
  • F15B11/02 - Systems ess entially incorporating special features for controlling the speed or actuating force of an output member
  • F15B11/0725 - with the driving energy being derived from a pneumatic system, a subsequent hydraulic system displacing or controlling the output element
  • F15B2211/21 - Systems with pressure sources other than pumps
  • F15B2211/212 - the pressure sources being accumulators
  • F15B2211/216 - the pressure sources being pneumatic-to-hydraulic converters
  • F15B2211/30505 - Non-return valves
  • F15B2211/40515 - with variable throttles or orifices
  • F15B2211/426 - electrically or electronically
  • F15B2211/455 - Control of flow in the feed line
  • F15B2211/50545 - using braking valves to maintain a back pressure
  • F15B2211/555 - for assuring a minimum pressure
  • F15B2211/7053 - Double-acting output members
  • F15B2211/7128 - the chambers being connected in parallel
  • Y10S60/907 - Working member positioned against counterforce by constantly applied motive fluid
  • Y10S254/90 - Cable pulling drum having wave motion responsive actuator for operating drive or rotation retarding means

• US Classifications

  • 254 - Implements or apparatus for applying pushing or pulling force
  • 060 - Power plants
  • 175 - Boring or penetrating the earth