Mufflers

Details Mufflers Mufflers

F - Mech Eng,Light,Heat,Weapons

01

N

F01N 1/02 (2006.01) F01N 13/18 (2010.01) F01N 1/12 (2006.01) F01N 7/18 (2006.01)

Patent

CA 2094168

A sound attentuating device, typically applied to the exhaust of internal combusion engines, and consisting of a helicoidal element fitted snugly within a tube. The helicoid is formed by a sequence of flat triangular sufaces generated by a forward fold transverse to a longitudinal axis followed by a reverse fold oblique to the longitudinal axis and having the procedure repeated. It is analogous to an accordion-like strip which rotates because an oblique fold alternates with a transverse fold. The muffler functions by having the helicoid reflect sound waves generated within the machine to which it is attached while permitting the escape of gases through the tube in a spiral manner.

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