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الإعدادات

الإعدادات

1. EP0454341 - An active noise cancellation apparatus.

المكتب المكتب الأوروبي للبراءات (EPO)
رقم الطلب 91303361
تاريخ الطلب 16.04.1991
رقم النشر 0454341
تاريخ النشر 30.10.1991
نوع النشر B1
التصنيف الدولي للبراءات
Description not available in lang ar
Description not available in lang ar
Description not available in lang ar
G 10K
F01N 1/06
G10K 11/178
التصنيف التعاوني للبراءات
F01N 1/065
G10K 11/178
G10K 2210/112
G10K 2210/12822
G10K 2210/3045
G10K 2210/3227
مودعي الطلبات FORD MOTOR CO
FORD WERKE AG
FORD FRANCE
FORD MOTOR CO
المخترعين GEDDES EARL R
بيانات الأولوية 07514624 25.04.1990 US
الاسم
(DE) Gerät für Rauschkompensation.
(EN) An active noise cancellation apparatus.
(FR) Dispositif pour la suppression du bruit.
الملخص
(EN)
An active, noise cancellation apparatus for a duct, the apparatus comprising, a sensor (12) for generating a sensor signal representative of an input pulse train, a transducer having a front side (20) and a rear side (22), means for mounting said transducer adjacent to a duct (14), electronic control means (16) for driving said transducer in response to said sensor signal and producing an output pulse train having a phase opposite to said input pulse train at a predetermined point, and means (24,26) for acoustically coupling said first and second sides (20,22) of said transducer with said conduit.

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