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Publication numberUS2651381 A
Publication typeGrant
Publication dateSep 8, 1953
Filing dateSep 24, 1951
Priority dateSep 24, 1951
Publication numberUS 2651381 A, US 2651381A, US-A-2651381, US2651381 A, US2651381A
InventorsCooper Richard W
Original AssigneeCooper Richard W
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Exhaust muffler with conical perforated baffles
US 2651381 A
Abstract  available in
Previous page
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Claims  available in
Description  (OCR text may contain errors)

R. w. COOPER 2,651,381 EXHAUST MUFFLER WITH CONICAL PERFORATED BAF'FLES Sept. 8, 1953 Filed Sept. 24, 1951 Fig. 3

F /'g. 2 I

Richard W- Cooper IN V EN TOR.



Application September 24, 1951,

Serial No. 247,964

1 Claim. (01. 18170) struction, strong, durable, highly efficient and reliable in use, compact and which may be manufeatured at low cost.

All of the foregoing and still further objects and advantages of the invention will become apparent from a study of the tion, taken in connection with the accompanying drawing, wherein like characters of reference designate corresponding parts throughout the several views, and wherein:

Figure 1 is a view in longitudinal section through a portion of a muffler constructed in accordance with the present invention;

Figure 2 is a view in transverse section through the device; and

Figure 3 is a plan view of the blank from which the baffles are formed.

Referring now to the drawing in detail, it will be seen that the embodiment of the invention Which has been illustrated comprises a tube 5 of suitable metal. The tube 5 may be of any desired length and said tube is preferably of a diameter corresponding to the usual exhaust and tail pipes which are to be connected to its ends.

Fixed in the tube 5 at longitudinally and circumferentially spaced points is a plurality of metallic bafiies 6. The baifles 6, which are formed from a single sheet of metal, are substantially in the form of segmental cones comprising reversely bent longitudinal marginal portions constituting attaching flanges which are firmly secured to the tube 5 in any suitable manner.

As illustrated to advantage in Figure 2 of the drawing, the baflles 6 have formed therein a multiplicity of openings or perforations 8. The arcuate rear ends of the bafiles 6 define moisture passages 9.

It is thought that the operation of the device will be readily apparent from a consideration of the foregoing. Briefly, the exhaust gases from the usual exhaust pipe of the engine enter the following specificatube 5 and are mufiled by the baffles 6 around and through which said gases pass.

of the exhaust gases may flow straight through the mufller. Any moisture or fluid Which may enter the muffler will be carried therethrough by the exhaust gases, this elimination being facilitated by the passages 9, thereby preventing the formation of rust and materially prolonging the life of the muffler.

It is believed that the many advantages of a invention as claimed. liaving described the invention, what is claimed as new is:

A rnufiler comprising a tube having an inlet at RICHARD W. COOPER.

References Cited in the file of this patent UNITED STATES PATENTS Number Name Date 1,111,265 Maxim Sept. 22, 1914 1,286,365 Loomis Dec. 3, 1918 1,474,115 Heather Nov. 13, 1923 2,122,086 Chase June 28, 1938 2,575,233 Plasse Nov. 13, 1951 FOREIGN PATENTS Number Country Date 646,808 France Jan. 7, 1928 366,257 Great Britain Feb. 4, 1932 655,774 Germany Jan. 22, 1938

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US1111265 *May 8, 1914Sep 22, 1914Hiram Percy MaximSilencer for gas-engines, &c.
US1286365 *Nov 14, 1917Dec 3, 1918Henry F LoomisExhaust device for internal-combustion engines.
US1474115 *Jun 12, 1923Nov 13, 1923Frederick HeatherMeans for silencing explosion noises connected with motor cars, motor vehicles; cycle, gas, oil, and steam engines
US2122086 *Oct 23, 1937Jun 28, 1938Frank Thomase FogdenSilencer for internal combustion engines
US2575233 *Oct 22, 1947Nov 13, 1951Plasse GustaveExhaust muffler with conical baffle plates
DE655774C *Dec 11, 1935Jan 22, 1938Wilhelm WolffSchalldaempfer, insbesondere fuer Kraftfahrzeuge
FR646808A * Title not available
GB366257A * Title not available
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3219142 *Oct 3, 1962Nov 23, 1965Oldberg Mfg CompanyMethod and apparatus for attenuating sound waves in gas streams
US3645357 *Aug 20, 1970Feb 29, 1972Cassel Thomas RichardQuarter-wave tuner structure
US3730293 *May 12, 1972May 1, 1973T CasselExhaust pipe with combined bendable partition
US7086497 *Sep 26, 2002Aug 8, 2006Siemens Vdo Automotive Inc.Induction system with low pass filter for turbo charger applications
US7350620 *Feb 28, 2005Apr 1, 2008Sylvain LalondeCompact silencer
US7717229 *May 9, 2008May 18, 2010Siemens Energy, Inc.Gas turbine exhaust sound suppressor and associated methods
US20030072459 *Sep 26, 2002Apr 17, 2003Roderic ColeInduction system with low pass filter for turbo charger applications
US20050194208 *Feb 28, 2005Sep 8, 2005Sylvain LalondeCompact silencer
US20090277714 *Nov 12, 2009Siemens Power Generations, Inc.Gas turbine exhaust sound suppressor and associated methods
U.S. Classification181/281
International ClassificationF01N1/08
Cooperative ClassificationF01N1/083
European ClassificationF01N1/08D