Acoustics – Sound-modifying means – Muffler – fluid conducting type
Reexamination Certificate
2007-12-18
2007-12-18
San Martin, Edgardo (Department: 2837)
Acoustics
Sound-modifying means
Muffler, fluid conducting type
C181S249000, C181S255000, C181S270000, C089S014400
Reexamination Certificate
active
11284287
ABSTRACT:
A sound suppressor for a firearm for reducing sound and flash levels upon the discharge of a firearm comprises a cylindrical housing, a proximal end cap with means for attachment to a firearm and to the cylindrical housing, a distal end cap with means for attachment to the housing, and a plurality of baffles positioned within the housing and between the proximal end and distal end caps of the suppressor. A separate cylindrical spacer element is positioned between the proximal end cap of the suppressor and the first baffle. This spacer provides axial positioning of the baffles within the cylindrical housing of the suppressor. The distal end cap of the suppressor is provided with a concentric circular hole or aperture for the projectile to pass through the end of the suppressor. In a number of preferred embodiments, the sound suppressor utilizes baffles that use two or more of the disclosed features that enhance reduction of sound and flash, these features being a rearward conical protrusion provided with multi-annular steps, a flange with an external diameter slightly less than the internal diameter of the cylindrical housing, a frontal turbulence generation structure, a frontal turbulence generation structure provided with at least one cut-out, a turbulence generation structure, and gas cross-flow enhancement cuts positioned on the proximal and distal sides of the baffles.
REFERENCES:
patent: 951770 (1910-03-01), Miller
patent: 981584 (1911-01-01), Miller
patent: 1081348 (1913-12-01), Unke et al.
patent: 1259251 (1918-03-01), Love
patent: 2925755 (1960-02-01), Krus
patent: 3385164 (1968-05-01), Hubner et al.
patent: 3748956 (1973-07-01), Hubner
patent: 4291610 (1981-09-01), Waiser
patent: 4576083 (1986-03-01), Seberger, Jr.
patent: 4588043 (1986-05-01), Finn
patent: 4907488 (1990-03-01), Seberger
patent: 5029512 (1991-07-01), Latka
patent: 5164535 (1992-11-01), Leasure
patent: 5679916 (1997-10-01), Weichert
patent: 6308609 (2001-10-01), Davies
patent: 6374718 (2002-04-01), Rescigno et al.
patent: 6425310 (2002-07-01), Champion
patent: 6575074 (2003-06-01), Gaddini
patent: 7207258 (2007-04-01), Scanlon
patent: 7237467 (2007-07-01), Melton
patent: WO 8903958 (1989-05-01), None
Gemini Technologies, Inc.
Martin Edgardo San
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