[특허]Noise reducing exhaust system and method

[미국특허] Noise reducing exhaust system and method 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	F01N-007/00
출원번호	US-0439392 (1999-11-15)
발명자 / 주소	Ridlen Charles W.
인용정보	피인용 횟수 : 5 인용 특허 : 16

초록 ▼

A time warp method of reducing noise in an exhaust stream includes the step of directing the exhaust stream into an inlet aperture of a sound cancellation chamber. The method also includes reflecting sound in the sound cancellation chamber toward the inlet aperture of the sound cancellation chamber. Another step of the method includes spreading the exhaust stream radially toward a periphery of the sound cancellation chamber. Yet another step of the method includes collecting exhaust from the periphery of the sound cancellation chamber in an outlet collector ring. Moreover, the method includes directing the exhaust collected from the periphery of the sound cancellation chamber substantially circumferentially about the sound cancellation chamber toward an outlet aperture of the outlet collector ring. Muffler devices for implementing the method are also disclosed.

대표청구항 ▼

[ What is claimed is:] [1.]1. A muffler for reducing noise in an exhaust stream, comprising:a first sound cancellation chamber comprisinga first major surface with a first intake aperture and a first peripheral edge, anda second major surface with a second intake aperture and a second peripheral edge,a first dividing inlet operable to receive said exhaust stream and split said exhaust stream into a first exhaust stream and a second exhaust stream, said first dividing inlet comprisinga first inlet channel operable to direct said first exhaust stream into said first intake aperture on a first common counter-flow centerline in a first flow direction, anda second inlet channel operable to direct said second exhaust stream into said second intake aperture on said first common counter-flow centerline in a second flow direction that is opposite said first flow direction such that said second exhaust stream and said first exhaust stream meet substantially at a first noise cancellation point on said first common counter-flow centerline that is located between said first major surface and said second major surface of said first sound cancellation chamber; andan outlet collector ring coupled to said first peripheral edge and said second peripheral edge of said first sound cancellation chamber such that said outlet collector ring is operable to receive and expel exhaust from said first sound cancellation chamber.

이 특허에 인용된 특허 (16) 인용/피인용 타임라인 분석

Delfosse Kent F. (Madison WI) Steenhagen Shawn K. (Madison WI), Active acoustic attenuation system with power limiting.
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Swinbanks Malcolm Alexander (Glasgow SC), Active control of sound waves.
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Geddes Earl R. (Livonia MI), Active muffler with dynamic tuning.
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Yashiro Haruki (Fujisawa JPX) Sasaki Akira (Yokosuka JPX) Maeda Kazushige (Zushi JPX), Automobile exhaust noise suppressor.
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Flugger Ray T. (Santa Rosa CA), Converging, corridor-based, sound-attenuating muffler and method.
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Howerton Kenneth R. (4200 N. Libby Oklahoma City OK 73122) Smith Derrell (P.O. Box 6772 Moore OK 73160), Engine exhaust muffler.
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Vizard David (Bishops Cleeve GB2), Exhaust mufflers for internal combustion engines.
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Flugger Ray T. (4810 Roblar Rd. Petaluma CA 94952), Lightweight muffler and method for muffling noise.
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Crandell Rodney (4567 New River Stage 2 Phoenix AZ 85027), Muffler for internal combustion engine.
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Schad Kurt (Bischofsheim DEX) Gora Hans-Joachim (Bischofsheim DEX), Muffler of the sound reflecting type for use with internal combustion engines.
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Hopfield John J. (Pasadena CA) Tank David W. (Maplewood NJ), Neural computation by time concentration.
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Moller Paul S. (9350 Curry Rd. Dixon CA 95620), Resonator type mufflers.
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Reu Boiu Rudolph (200 N. Minnesota ; #23 Glendora CA 91740), Sound-attenuating muffler for exhaust gases.
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Clegg Michael W. (Toledo OH) Harwood Jon W. (Toledo OH) Kohntopp Robert A. (Toledo OH), Stamp formed muffler with low back pressure.
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Hall ; Leonard F. ; Noreen ; Robert A., Vent silencer.
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Bychinsky Wilfred A. (Burton MI), Wave interference silencer.
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이 특허를 인용한 특허 (5) 인용/피인용 타임라인 분석

Hawwa, Muhammad A., Expandable chamber acoustic silencer.
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Sullivan, John Timothy, Flow-through mufflers with optional thermo-electric, sound cancellation, and tuning capabilities.
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Sullivan, John Timothy, Flow-through sound-cancelling mufflers.
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Scanlon, Michael, Muffler and related systems.
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Brower, David R.; Mason, John R., Tuned exhaust system for small engines.
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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

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[미국특허] Noise reducing exhaust system and method 원문보기