Spun extrusion side entry muffler

Details Spun extrusion side entry muffler Spun extrusion side entry muffler

2008-01-08

2008-01-08

San Martin, Edgardo (Department: 2837)

Acoustics

Sound-modifying means

Muffler, fluid conducting type

C181S272000, C029S890080

Reexamination Certificate

active

07316292

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.

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