3912221

Information

• Patent Grant
• 3912221

• References
• Source

• Patent Number

  3,912,221

• Date Filed

  Not available

• Date Issued

  Tuesday, October 14, 1975
  49 years ago

• CPC

  • F16K41/023 - for spindles which only rotate
  • F16K3/02 - with flat sealing faces Packings therefor
  • F16K31/508 - the actuating element being rotatable, non-rising, and driving a non-rotatable axially-sliding element
  • Y10S277/91 - O-ring seal

• US Classifications

  • 251 - Valves and valve actuation
  • 277 - Seal for a joint or juncture