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US 2006/0231330 A1Published application
Spun extrusion side entry muffler
AssigneeET US Holdings LLC
InventorsAnthony Morales, Alfred Tucker
Life of this patent
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Abstract
By using a spun extrusion method to form a side entry exhaust inlet, a muffler can be completely stuffed and end caps can be spun onto opposing ends of the muffler on a high speed production line without interruptions. The side entry exhaust inlet is formed within a muffler shell at a position between the opposing ends. A spinning tool engages an internal peripheral area of the side entry exhaust inlet to form a spun extruded surface that extends outwardly from the muffler shell.
Claims16
A muffler comprising:
- a shell including an internal cavity, said shell defining a longitudinal axis that extends between first and second ends;
- a first end cap substantially enclosing said internal cavity at said first end;
- a second end cap substantially enclosing said internal cavity at said second end;
- and
- an exhaust inlet formed within said shell at a position between said first and second ends, said exhaust inlet having a spun extruded surface extending outwardly from said shell.
2 more elements
A method of forming a muffler comprising the steps of:
- (a) forming an outer shell with an internal cavity extending between first and second shell ends;
- (b) forming an exhaust inlet in the outer shell at a position between the first and second shell ends;
- and
- (c) spinning a tool against an inner peripheral area of the exhaust inlet to form a spun extruded surface about the exhaust inlet.
1 more element
A method of forming a muffler comprising the steps of:
- (a) forming an outer shell with an internal cavity extending between first and second shell ends;
- (b) forming a connection interface portion in the outer shell at a position between the first and second shell ends;
- and
- (c) spinning a tool against an inner peripheral area of the connection interface portion to form a spun extruded surface about the connection interface portion.
1 more element
Dependencies are inferred from the claim text.