3854381

Information

• Patent Grant
• 3854381

• References
• Source

• Patent Number

  3,854,381

• Date Filed

  Not available

• Date Issued

  Tuesday, December 17, 1974
  50 years ago

• CPC

  • F15B11/024 - by means of differential connection of the servomotor lines
  • E02F3/6481 - with scraper bowls with an ejector having translational movement for dumping the soil
  • E02F3/651 - Hydraulic or pneumatic drives; Electric or electro-mechanical control devices
  • E02F3/652 - Means to adjust the height of the scraper bowls
  • E02F3/657 - Means to prevent the spilling of dredged material
  • F15B11/20 - controlling several interacting or sequentially-operating members
  • F15B2211/30525 - Directional control valves
  • F15B2211/3058 - having additional valves for interconnecting the fluid chambers of a double-acting actuator
  • F15B2211/31576 - having a single pressure source and a single output member
  • F15B2211/31588 - having a single pressure source and multiple output members
  • F15B2211/324 - manually
  • F15B2211/35 - Directional control combined with flow control
  • F15B2211/50518 - using pressure relief valves
  • F15B2211/5153 - being connected to an output member and a directional control valve
  • F15B2211/5157 - being connected to a pressure source and a return line
  • F15B2211/55 - for limiting a pressure up to a maximum pressure
  • F15B2211/565 - Control of a downstream pressure
  • F15B2211/7053 - Double-acting output members
  • F15B2211/7128 - the chambers being connected in parallel
  • F15B2211/78 - Control of multiple output members
  • F15B2211/85 - Control during special operating conditions

• US Classifications

  • 091 - Motors: expansible chamber type