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Publication numberUS823115 A
Publication typeGrant
Publication dateJun 12, 1906
Filing dateDec 8, 1905
Priority dateDec 8, 1905
Publication numberUS 823115 A, US 823115A, US-A-823115, US823115 A, US823115A
InventorsBenjamin A Gramm
Original AssigneeBenjamin A Gramm
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
US 823115 A
Abstract  available in
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Description  (OCR text may contain errors)

No. 823,115. PATENTED JUNE 12, i906.




19i P140030.) Q/ 51 we x 1 You 69 GYJWW gmwvw A 33711 C H'ozucu I outlet-compartment; each of said compartments colnprisim an end piece and a series of concentric cylindrical shells one end of each of which is mounted. in one of said end pieces and the other end of each of which is mount-' ed in a partition which separates said compartments from each other; the outer shell of each compartment being imperforate and the other shells thereof being perforated; and said partition being formed with apertures extending entirely around its outer edge be- I 5 tween the walls of theputer and the next to outer shells.


Witnesses H. T. HERMANN, W. H. SCHILDER.

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US3754620 *Aug 21, 1972Aug 28, 1973Foster SMuffler
US3786896 *May 10, 1973Jan 22, 1974Foster SMuffler
US5952625 *Jan 20, 1998Sep 14, 1999Jb Design, Inc.To attenuate sounds of combustion gases exhausted from an ic engine
US6199658 *Jul 30, 1999Mar 13, 2001Jb Design, Inc.Multi-Fold side branch muffler
US6595319Oct 30, 2001Jul 22, 2003Ronald G. HuffMuffler
Cooperative ClassificationF01N1/084