3703913

Information

• Patent Grant
• 3703913

• References
• Source

• Patent Number

  3,703,913

• Date Filed

  Not available

• Date Issued

  Tuesday, November 28, 1972
  52 years ago

• CPC

  • F16K1/40 - of helical shape
  • F16K15/145 - the closure elements being shaped as a solids of revolution
  • Y10S251/902 - Springs employed as valves
  • Y10T137/7839 - Dividing and recombining in a single flow path
  • Y10T137/7869 - Biased open
  • Y10T137/7879 - Resilient material valve
  • Y10T137/87555 - Having direct response valve [e.g., check valve, etc.]

• US Classifications

  • 137 - Fluid handling
  • 138 - Pipes and tubular conduits
  • 251 - Valves and valve actuation