Did You Know...
...that Thomas Edison's patent application on his phonograph was approved by the Patent Office in just seven weeks? In contrast, it took Gordon Gould, the inventor of the laser, 30 years to obtain his patent -- finally awarded in 1988!
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| Application No. | Application Title | Issue Date |
| 20090126357 | PASSIVE VALVE ASSEMBLY FOR VEHICLE EXHAUST SYSTEM A passive valve assembly for a vehicle exhaust system includes an exhaust component that defines an exhaust gas flow path and a vane that is positioned within the exhaust gas flow path. The vane is movable between a fully closed position where a maximum portion of the e... | 05/21/2009 |
| 20090126356 | OFFSET PASSIVE VALVE FOR VEHICLE EXHAUST SYSTEM An exhaust component includes a wall with an inner surface defining an exhaust gas flow path. A passive valve assembly includes a vane that is positioned within the exhaust gas flow path to be pivotable between open and closed positions. The vane is defined by a plane t... | 05/21/2009 |
| 20080308347 | VEHICULAR EXHAUST SYSTEM A system and method for dissipating at least one pressure wave in an exhaust gas flow is disclosed. A vehicular exhaust system directs the exhaust gas flow through a plurality of coaxial and perforated generally cylindrical tubes contained within an insulated canister t... | 12/18/2008 |
| 20070272479 | Exhaust System for an Internal Combustion Engine Disclosed is an exhaust system (100) for an internal combustion engine, comprising a first exhaust leg that is provided with a penetrable first muffler (120), especially a rear muffler, and at least one second exhaust leg which runs parallel to the first o... | 11/29/2007 |
| 20070062757 | Pressed assembly for passive valve installation A muffler assembly includes first and second muffler components that are each formed as a single piece. The first muffler component includes a first outlet pipe portion, a first bypass pipe mount portion, and a first resonator shell portion. The second muffler component... | 03/22/2007 |
| 20060272887 | Assembly and method for fan noise reduction from turbofan engines using dynamically adaptive Herschel-Quincke tubes An assembly useful in reducing aircraft engine noise such as turbofan engine noise comprises: (i) at least one tube having an inlet end, an outlet end and a central tube portion therebetween; and (ii) at least one actuator operatively interconnected to at least one tube... | 12/07/2006 |
| 20050205351 | Noise reduction tubes The invention uses tubes for the reduction of radiated duct noise. The tubes may be used to attenuate narrow band noise by diverting a portion of the acoustic energy through the tubes back into the duct. Upon reintroducing the diverted flow out of phase with the primary... | 09/22/2005 |
| 20050016792 | Noise suppressor apparatus for a gas duct A sound damping device (4) for a tubular duct (2), particularly a gas transporting tract of an internal combustion engine (1) having a least one bypass channel (5) running parallel to a main duct (6) in a section of the duct (2)... | 01/27/2005 |
