Turbocharger noise silencer
Patent 4969536 Issued on November 13, 1990. Estimated Expiration Date: 
October 26, 2009. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
October 26, 2009. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 2749998 2869670 3578107 Coke oven hood apparatus Silencer on the intake side of a compressor with assembly of axially spaced annular sound-damping elements Pressure variation absorber Supercharger intake air muffler or sound absorber, and method of muffling inrush air Patent #: 4667769 InventorAssigneeApplicationNo. 427025 filed on 10/26/1989US Classes:181/229, Carburetor, burner, or compressor intake silencer181/225, With fan to assist fluid flow181/226, With adjustable fluid flow181/240, Manifold type181/249, With expansion chamber181/252, With sound absorbing material181/269, Expansion chamber type181/277, Movable baffle415/119WITH SOUND OR VIBRATORY WAVE ABSORBING OR PREVENTING MEANS OR ARRANGEMENTExaminersPrimary: Fuller, Benjamin R.Attorney, Agent or FirmInternational ClassF02M 035/00AbstractA charge air system for an internal combustion engine includes a compressor wheel which is rotated to draw ambient air into a housing, compress the air, and to force the air through a discharge conduit into the the intake manifold of an internal combustion engine. The silencers may be placed in the inlet conduit or the outlet conduit to attenuate pressure fluctuations in the conduits, which are a source of significant noise.Field of SearchUpstream (e.g., intake silencer)Pipe-muffler (e.g., tail pipe type) With adjustable fluid flow Separate distinct units serially connected With exhaust pipe Pneumatic type motor (e.g., air hammer, etc.) Carburetor, burner, or compressor intake silencer With fan to assist fluid flow With solid particle separator (e.g., spark arrestor, vacuum cleaner, etc.) Manifold type With sound absorbing material Expansion chamber type Movable baffle With expansion chamber WITH SOUND OR VIBRATORY WAVE ABSORBING OR PREVENTING MEANS OR ARRANGEMENT | |
