Multiple source self noise cancellation
Patent 5692054 Issued on November 25, 1997. Estimated Expiration Date: 
June 30, 2015. 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.
June 30, 2015. 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 ReferencesAircraft cabin noise control apparatus Method for actively attenuating engine generated noise Patent #: 5146505 InventorsAssigneeApplicationNo. 411785 filed on 06/30/1995US Classes:381/71.3, From appliance381/71.5, Within duct415/119WITH SOUND OR VIBRATORY WAVE ABSORBING OR PREVENTING MEANS OR ARRANGEMENTExaminersPrimary: Isen, Forester W.Foreign Patent References
International ClassG10K 011/16AbstractA repetitive noise cancellation system for multiple noise sources employing a controller (36) which senses radiated noise by reference sensors (35) and the status of the noise sources by position sensors (37, 38) and automatically controls one of the noise sources so that the noises being emitted from the multiple sources cancel one another. | |
