公开(公告)号：WO1996014011A2

公开(公告)日：1996-05-17

申请号：PCT/US1995013907

申请日：1995-10-27

Applicant: NOISE CANCELLATION TECHNOLOGIES, INC.

Inventor： NOISE CANCELLATION TECHNOLOGIES, INC. ,  SMITH, Dexter, G. ,  NOWICKI, Christopher, P. ,  ARNOLD, Michael, F.

IPC: A47L00/00

CPC classification number: A47L9/0081

Abstract: An ultra quiet vacuum cleaner having a bag cavity (44), a motor/blower chamber (48) connected to said cavity by a flexible coupling (47) and an active, adaptive noise cancellation controller (52) so configured to quiet the exhaust of the air used to cool the motor/blower unit. Fast compensation and feedback compensation allow use of a straight, short duct (51) for superior cancellation performance.

Abstract translation: 一种超静音真空吸尘器，具有袋腔（44），通过柔性联轴器（47）连接到所述空腔的电动机/鼓风机室（48）以及主动自适应噪声消除控制器（52），其被配置成使排气 用于冷却电机/鼓风机单元的空气。 快速补偿和反馈补偿允许使用直管短管（51），以获得出色的取消性能。

公开(公告)号：WO1994017719A1

公开(公告)日：1994-08-18

申请号：PCT/US1994001190

申请日：1994-02-08

Applicant: NOISE CANCELLATION TECHNOLOGIES, INC.

Inventor： NOISE CANCELLATION TECHNOLOGIES, INC. ,  SMITH, Dexter, G. ,  NOWICKI, Christopher, P. ,  ARNOLD, Michael, F.

IPC: A47L09/00

CPC classification number: A47L9/0081

Abstract: An ultra-quiet vacuum cleaner system having an active noise controller (26) adapted to measure with microphones (28), (29) the noise generated by the system and to provide via a speaker (27) an equal counter-noise to thereby attenuate the generated noise. The system also includes designing the coupling (22) between the bag cavity (20) and the motor chamber (23) and the motor chamber (23) itself as structures for reducing noise.

Abstract translation: 一种超静音真空吸尘器系统，具有主动噪声控制器（26），适用于用麦克风（28）测量，（29）由系统产生的噪声，并通过扬声器（27）提供相等的反噪声从而衰减 产生的噪音。 该系统还包括设计袋腔（20）和马达腔（23）与马达腔（23）本身之间的联结件（22），作为减少噪音的结构。

公开(公告)号：EP0683639A1

公开(公告)日：1995-11-29

申请号：EP94907955.0

申请日：1994-02-08

Applicant: NOISE CANCELLATION TECHNOLOGIES, INC.

Inventor： SMITH, Dexter, G. ,  NOWICKI, Christopher, P. ,  ARNOLD, Michael, F.

IPC: A47L9

CPC classification number: A47L9/0081

Abstract: An ultra-quiet vacuum cleaner system having an active noise controller (26) adapted to measure with microphones (28), (29) the noise generated by the system and to provide via a speaker (27) an equal counter-noise to thereby attenuate the generated noise. The system also includes designing the coupling (22) between the bag cavity (20) and the motor chamber (23) and the motor chamber (23) itself as structures for reducing noise.