2798569

Information

• Patent Grant
• 2798569

• References
• Source

• Patent Number

  2,798,569

• Date Filed

  Not available

• Date Issued

  Tuesday, July 9, 1957
  67 years ago

• CPC

  • F01N1/006 - comprising at least one perforated tube extending from inlet to outlet of the silencer
  • F01N1/02 - by using resonance
  • F01N1/023 - Helmholtz resonators
  • F01N1/166 - for changing gas flow path through the silencer or for adjusting the dimensions of a chamber or a pipe
  • F01N1/24 - by using sound-absorbing materials
  • F41A21/30 - Silencers
  • F01N2310/12 - Granular material
  • F01N2490/155 - being disposed one after the other in flow direction

• US Classifications

  • 181 - Acoustics