3494300

Information

• Patent Grant
• 3494300

• References
• Source

• Patent Number

  3,494,300

• Date Filed

  Not available

• Date Issued

  Tuesday, February 10, 1970
  55 years ago

• CPC

  • E01B27/17 - combined with means for lifting, levlling or slewing the track
  • E01B27/16 - Sleeper-tamping machines
  • F15B11/17 - using two or more pumps
  • E01B2203/12 - Tamping devices
  • E01B2203/141 - on the track to be treated
  • E01B2203/145 - on the ballast
  • E01B2203/146 - using other means than driven wheels as propulsion means
  • E01B2203/148 - having wheelsets that can be displaced horizontally or vertically
  • F15B2211/20576 - with multiple pumps
  • F15B2211/265 - Control of multiple pressure sources
  • F15B2211/30505 - Non-return valves
  • F15B2211/3116 - the pump port being open in the centre position
  • F15B2211/50581 - using counterbalance valves
  • F15B2211/7128 - the chambers being connected in parallel
  • F15B2211/7142 - the output members being arranged in multiple groups
  • F15B2211/78 - Control of multiple output members

• US Classifications

  • 104 - Railways