Acoustics – Sound-modifying means – Muffler – fluid conducting type
Patent
1990-03-26
1990-09-25
Fuller, Benjamin R.
Acoustics
Sound-modifying means
Muffler, fluid conducting type
181228, 181243, 181272, 181273, F01N 718
Patent
active
049587013
ABSTRACT:
A stamp formed muffler includes upper and lower internal plates and upper and lower external shells secured to the respective internal plates. The internal plates are formed to include arrays of channels that are placed in register with one another to define an array of tubes. The external shells are formed to define chambers that surround selected tubes formed by the internal plates. The upper internal plate includes at least one pair of aligned channels disposed in spaced apart end-to-end relationship and in register with a continuous channel in the lower internal plate. The chambers of the external shells are separated from one another by baffle creases. The baffle crease of the upper external shell is disposed in registration with the spaced apart aligned channels of the upper external shell. As a result, the baffle crease of the upper external shell is substantially free of pockets that conceivably could trap foreign materials.
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AP Parts Manufacturing Company
Casella Anthony J.
Fuller Benjamin R.
Hespos Gerald E.
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