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| Application No. | Application Title | Issue Date |
| 20090223740 | Silencer of Exhaust Gases, in Particular for Motor Vehicles Silencer of exhaust gases, in particular for motor vehicles, comprising an inlet opening (13) and a cylindrical coat (1) provided with an outlet pipe (29) at its opposing end, said cylindrical coat (1) has an internal division into at least f... | 09/10/2009 |
| 20070029134 | Dual-neck plane wave resonator A resonator and method of designing a resonator including a cavity having an effective length that exceeds λ/8 such that a standing wave having an anti-node will form in the cavity. First and second necks each having first ends are attached to and in fluid communicatio... | 02/08/2007 |
| 20060086564 | Dual chamber variable geometry resonator A resonator for attenuating pressure pulses is provided. The resonator includes a housing, a divider, a first neck, and a second neck. Walls of the housing form a cavity with a first and second opening. The divider is located in the cavity and cooperates with the housin... | 04/27/2006 |
| 20060065479 | Resonator A resonator is arranged in an intake system including a pipe section for partitioning an intake port from an intake passage that communicates the intake port with a combustion chamber of an engine, the resonator including: a branch pipe having one end branching to the p... | 03/30/2006 |
| 20060065478 | Compressor sound suppression A compressor includes a housing and one or more working elements. A muffler is located downstream of the discharge plenum and a helmholtz resonator is located in the discharge plenum upstream of the muffler. ... | 03/30/2006 |
| 20060060419 | Apparatus for transmitting sound in a motor vehicle An apparatus for transmitting sound in a motor vehicle including a housing (1) with an inside partition (2), which together define or delimit two separate subspaces (3, 4), which in turn are separated by a transmission valve (6) which opens t... | 03/23/2006 |
| 20060042873 | Apparatus for transmitting sound in a motor vehicle An apparatus for transmitting sound in a motor vehicle having a housing (1) with an inner partition (2), which together define two separate subspaces (3, 4). A transmission valve (6) which separates the two subspaces (3, 4) is provided... | 03/02/2006 |
| 20060032700 | Noise reduction technique for snowmobiles An air intake that reduces the transmission of noise from an internal combustion engine while maintaining high air intake flow rates. The air intake has a duct for delivering air to an internal combustion engine, and resonator volumes in communication with the inside of... | 02/16/2006 |
| 20050279569 | Interference-based exhaust noise attenuation An interference-based exhaust noise attenuation device and method for exhaust flow from an internal combustion engine that generates compressive waves in the exhaust flow. The device includes at least a direct path for the exhaust flow; a looped path for the exhaust flo... | 12/22/2005 |
| 20050230182 | Exhaust volume An exhaust volume (20) of the type including a muffler (24) having a casing provided with an inlet (29) and an outlet (30) for passing gases and adapted to enable the muffler to be mounted in an exhaust system (14). The volume further ... | 10/20/2005 |
| 20050217930 | Systems and methods for controlling acoustical damping A control system (10) controls a variable acoustical damping device (20) disposed in a sound producing channel (5) of a vehicle engine (1). The control system includes a controller (12) and a selection device (14). The controlle... | 10/06/2005 |
| 20050173186 | Air intake apparatus An air intake apparatus has an air intake port opening outside, and an air intake path communicating the air intake port with a combustion chamber of an engine. For suppressing noise getting out from the air intake port, with respect to walls partitioning the air intake... | 08/11/2005 |
| 20050150718 | Resonator with retention ribs A resonator includes an inner perforated tube, an outer shell, and a plurality of annular ribs extending radially therebetween and defining resonant chambers. Progressive stepping of ribs and grooves enables axial insertion assembly with minimal cost. The need for weldi... | 07/14/2005 |
| 20050133300 | Device for establishing noise in a motor vehicle In a device for establishing noise in a motor vehicle with a housing, which is divided by at least one sound transmission device into at least two spaces, of which one space is in connection via an inlet line with a gas-carrying part of an internal combustion engine of ... | 06/23/2005 |
| 20050121255 | Device for establishing noise in a motor vehicle In a device for establishing noise in a motor vehicle, comprising a housing which is divided by a sound transmission device into at least two spaces, of which one space is in communication with a gas-carrying part of an internal combustion engine arranged in the motor v... | 06/09/2005 |
| 20050034918 | High frequency dynamics resonator assembly Aspects of the invention relate to resonator assemblies for use in non-uniform flow environments. The resonator assemblies include one or more features, such as a box or a scoop, for substantially equalizing the pressure on the resonator. In the box configuration, a box... | 02/17/2005 |
| 20050011699 | Muffler A muffler which reduces noises of a wide frequency band with a simple structure. Sound waves of an intake duct enter into and are received in a resonance box via a branch pipe. At the branch pipe, a movable body slidingly abuts a peripheral portion of an opening of a cu... | 01/20/2005 |
