3780990

Information

• Patent Grant
• 3780990

• References
• Source

• Patent Number

  3,780,990

• Date Filed

  Not available

• Date Issued

  Tuesday, December 25, 1973
  51 years ago

• CPC

  • F15B11/04 - for controlling the speed
  • B66D1/08 - incorporating fluid motors
  • B66D5/26 - pneumatic or hydraulic
  • F15B11/003 - Systems with load-holding valves
  • B66D2700/0133 - Fluid actuated
  • B66D2700/035 - Fluid operated braking devices
  • F15B2211/30505 - Non-return valves
  • F15B2211/30525 - Directional control valves
  • F15B2211/31576 - having a single pressure source and a single output member
  • F15B2211/324 - manually
  • F15B2211/40515 - with variable throttles or orifices
  • F15B2211/413 - the positions being continuously variable
  • F15B2211/41581 - being connected to an output member and a return line
  • F15B2211/428 - actuated by fluid pressure
  • F15B2211/46 - Control of flow in the return lin
  • F15B2211/6054 - using shuttle valves
  • F15B2211/625 - Accumulators
  • F15B2211/7058 - Rotary output members
  • F16H61/4157 - Control of braking
  • F16H2063/3033 - the brake is actuated by springs and released by a fluid pressure

• US Classifications

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