3404749

Information

• Patent Grant
• 3404749

• References
• Source

• Patent Number

  3,404,749

• Date Filed

  Not available

• Date Issued

  Tuesday, October 8, 1968
  57 years ago

• CPC

  • F01N13/1838 - characterised by the type of connection between parts of exhaust or silencing apparatus
  • B27B17/00 - Chain saws Equipment therefor
  • F01N1/083 - using transversal baffles defining a tortuous path for the gases or successively throttling gas flow
  • F01N13/1833 - specially adapted for small internal combustion engines
  • F01N13/1894 - the parts being assembled in longitudinal direction
  • F01N2450/22 - by welding or brazing
  • F01N2450/24 - by bolts, screws, rivets or the like
  • F01N2470/10 - Tubes having non-circular cross section
  • F01N2470/18 - the axis of inlet or outlet tubes being other than the longitudinal axis of apparatus
  • F01N2470/20 - Dimensional characteristics of tubes
  • F01N2490/02 - Two or more expansion chambers in series connected by means of tubes
  • F01N2490/08 - Two or more expansion chambers in series separated by apertured walls only
  • F01N2590/06 - for hand-held tools or portables devices

• US Classifications

  • 181 - Acoustics