Stamp formed muffler
Number of patents in Portfolio can not be more than 2000
United States of America
Stats
-
Oct 9, 1990
Grant Date -
N/A
app pub date -
May 10, 1989
filing date -
Nov 25, 1986
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A muffler is provided with a pair of stamp formed internal plates and a pair of stamp formed external shells. The internal plates define inlet and outlet tubes at least portions of which are provided with arrays of perforations or louvers. One or more tuning tubes may be stamp formed in the internal plates and one or more low frequency resonator chambers may be stamp formed from portions of either the internal plates or the external shells. The external shells may further be configured to define high frequency tuning chambers of a selected size and shape.
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Cited Art Landscape
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