Class 181/272 - Plural chambers

Subclass of Class 181 - Acoustics
Definition: Subject matter having more than one expansion chamber.
No. of applications: 22
Last issue date: 12/09/2010

Application No.	Application Title	Issue Date
20100307865	SILENCER FOR INTERNAL COMBUSTION ENGINE A silencer for an internal combustion engine includes a silencer housing formed by a pair of clamped housing members each having a substantially identical configuration relative to one another. The silencer housing has an intake port formed at a first end and an exhaust...	12/09/2010
20090145689	MUFFLER OF VEHICLE AND EXHAUST APPARATUS USING THE SAME A muffler includes a case divided into three chambers by two baffles. The first chamber is closest to, and the third chamber is farthest from, the exhaust pipe. An inlet pipe has a first end connected to the exhaust pipe, and a second end in fluid communication with the...	06/11/2009
20090114477	Exhaust system for a motorcycle, and motorcycle incorporating same An exhaust system for a motorcycle includes exhaust pipes extending from exhaust ports of an engine, a first muffler chamber for receiving the exhaust pipes, a second muffler chamber arranged parallel to and operatively connected with the first muffler chamber, and a si...	05/07/2009
20080060870	EXHAUST MUFFLER The present specification discloses a muffler for attenuating exhaust noise from an internal combustion engine. The muffler includes a main chamber, an intermediate pipe, a diffuser chamber, a spark arrester, and an exhaust pipe. Exhaust gases from the engine enter the ...	03/13/2008
20080008612	MUFFLER OF SCROLL COMPRESSOR Disclosed herein is a muffler of a scroll compressor. The muffler includes a first muffler having a pair of chambers defined above an outlet of a fixed scroll to communicate with the outlet and a gas passage hole formed at the center of an upper end thereof, and a secon...	01/10/2008
20070227813	Silencer for adsorption-based gas separation systems The present invention generally relates to the attenuation of vacuum blower noise using a silencer. More particularly, the present invention relates to a low-cost, reliable and efficient silencer for reducing noise levels in adsorption-based gas separation plants from t...	10/04/2007
20070144828	Inlet metallic foam support coupled to precious metal catalyst for application on 4 stroke platforms The present invention is directed to an improved dual phase muffler for the abatement of reduction of sound and emission pollutants such as hydrocarbons, carbon monoxide, and nitrogen oxides. More specifically, the muffler comprises a muffler casing, an inner chamber fo...	06/28/2007
20060266580	Muffler for an exhaust system and manufacturing method for same A muffler for an exhaust system of an internal combustion engine, in particular in a motor vehicle, with an exhaust pipe which has an end section that is permeable for airborne sound and which is surrounded by a jacket in this end section to form a reflective chamber. T...	11/30/2006
20060231330	Spun extrusion side entry muffler By using a spun extrusion method to form a side entry exhaust inlet, a muffler can be completely stuffed and end caps can be spun onto opposing ends of the muffler on a high speed production line without interruptions. The side entry exhaust inlet is formed within a muf...	10/19/2006
20060131102	Exhaust muffler The present specification discloses a muffler for attenuating exhaust noise from an internal combustion engine. The muffler includes a main chamber, an intermediate pipe, a diffuser chamber, a spark arrester, and an exhaust pipe. Exhaust gases from the engine enter the ...	06/22/2006
20060124386	Acoustic drain A baffle assembly for a hollow cavity is disclosed. The baffle assembly includes a labyrinth that defines a tortuous drain passageway. The baffle assembly includes a vertical portion that abuts an expandable material to reduce the transmission of noise and other vibrati...	06/15/2006
20060090957	Exhaust muffler An exhaust muffler (1) invention includes an entry chamber (9), a resonator chamber (15), and a baffle chamber (23) positioned in serial order between an exhaust gas inlet (3) that lets exhaust gas into the entry chamber and an exhaust...	05/04/2006
20060086563	Compressor discharge pulsation dampener A pulsation dampener comprising a first resonator tube having a first tube inlet in communication with a compressor outlet. The first resonator tube has an outlet located within a first resonator chamber. The first resonator tube has a length l₁that is equal...	04/27/2006
20060054384	Automobile muffler with high flow rate A sound attenuating exhaust muffler for an internal combustion engine is disclosed. The muffler has a body casing with an exhaust inlet at one end and an exhaust exit at the other end. Internally, three partitions define four serial chambers with a sound absorbing colum...	03/16/2006
20060037814	Exhaust system of internal combustion engine In an exhaust system, exhaust manifolds are connected to two banks provided in a V-type engine of a vehicle, respectively, to which front pipes each having a catalytic converter are connected to the exhaust manifolds, respectively. A muffler is provided at an exhaust do...	02/23/2006
20060037813	Noise reduction structure for hybrid vehicle A noise reduction structure for a hybrid vehicle in which a cover covers at least part of an air intake system connected to an engine capable of giving power to a driving wheel, an exhaust muffler constituting part of an exhaust system connected to the engine, and an el...	02/23/2006
20050279572	Arrangement for internal combustion engine A sound-absorbing exhaust system for an internal combustion engine. The system may comprise a receptacle, an inlet which is arranged in the receptacle and through which exhaust gases can be directed into the same, and a discharge pipe, which connects the interior of the...	12/22/2005
20050258001	Muffler for an engine A muffler suited for use in discharging exhaust gas from an engine. The muffler generally includes a housing that defines a muffler interior, an inlet aperture, and an outlet aperture. A baffle that defines a baffle interior is positioned to divide the muffler interior ...	11/24/2005
20050224284	Engine exhaust muffler with exhaust emission control function In an engine exhaust muffler with an exhaust emission control function, the inside of a box-shaped muffler body is divided into a first exhaust chamber and a second exhaust chamber by a partitioning member which has a third exhaust chamber formed therein. The muffler bo...	10/13/2005
20050121256	Device for establishing noise in a motor vehicle In a device for establishing noise in a motor vehicle, including a housing having an inlet space, which is in communication via an inlet line with a gas-carrying part of an internal combustion engine arranged in the motor vehicle, and an outlet space, which is acoustica...	06/09/2005
20050103567	Exhaust muffler for internal combustion engines Performance sound is produced with a muffler that includes a casing with front (5, 37), rear (7, 41) and side (3, 35) walls, first (9, 45) and second (11, 47) compartment walls each with a central passage (25, 28, 46, 48) and si...	05/19/2005
20050023078	Tuned exhaust system for small engines A tuned exhaust system for small two cylinder engines, the exhaust system including a pair of exhaust passage through which exhaust gasses pass. The exhaust passages are dimensioned to providing a tuning effect to the exhaust gasses for enhanced engine performance. The ...	02/03/2005

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Class 181/272 - Plural chambers