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51. 发明授权

US3940575A Directional microphone 失效
标题翻译：定向麦克风
公开(公告)号：US3940575A
公开(公告)日：1976-02-24
申请号：US554586
申请日：1975-03-03
申请人： Benjamin B. Bauer
发明人： Benjamin B. Bauer
IPC分类号： H04R9/08 , H04R1/38 , H04R9/00
CPC分类号： H04R9/00 , H04R1/38
摘要： A pressure gradient directional microphone of the moving coil type in which the acousto-mechanical function of the transducer is achieved by a vibratile diaphragm the major area of which is of coneiform shape and the central portion of which is of dome shape and of significantly smaller area and provides a surround for attaching the coil. One side of the diaphragm is exposed to the sound field surrounding the microphone, and the other side is exposed to two cavities, one of relatively large volume behind that portion of the diaphragm which is of coneiform shape, and a second behind the dome portion which is sufficiently smaller that it is unnecessary to provide any phase-shift action for any sound pressure generated therein. The diaphragm is secured at its periphery to a support ring having a plurality of openings formed therein which serve as acoustic ducts from the ambient into the larger cavity.
摘要翻译：运动线圈型的压力梯度定向麦克风，其中换能器的声 - 机械功能由振动膜片实现，其主要区域为锥形，其中心部分为圆顶形状，面积明显更小并提供用于附接线圈的环绕。膜片的一侧暴露于麦克风周围的声场，另一侧暴露于两个空腔，其中一个相当大的体积在隔膜的那个部分之后是锥形形状，第二个在圆顶部分后面足够小，使得不需要为其中产生的任何声压提供任何相移作用。隔膜在其周边处固定到具有形成在其中的多个开口的支撑环，该多个开口用作从环境到较大空腔的声导管。

52. 发明授权

US3832499A Electro-acoustic transducer 失效
标题翻译：电声传感器
公开(公告)号：US3832499A
公开(公告)日：1974-08-27
申请号：US32182673
申请日：1973-01-08
申请人： HEIL O
发明人： HEIL O
IPC分类号： H04R9/00 , H04R9/04 , H04R9/06
CPC分类号： H04R9/047 , H04R9/063
摘要： An electro-acoustic transducer comprising permanent magnet means producing a magnetic field and defining a space communicating with the outer atmosphere, and diaphragm means located in said space and comprising a corrugated sheet of flexible material and a metal foil applied in a meander pattern to at least one face of the plastic sheet.
摘要翻译：一种电声换能器，包括产生磁场并限定与外部空气连通的空间的永磁体装置，以及位于所述空间中的隔膜装置，其包括柔性材料波纹片和以曲折图案施加至少至少塑料片的一面。

53. 发明授权

US3436494A Compliant annulus for loudspeaker and related circuit 失效
标题翻译：用于扬声器和相关电路的合规电路
公开(公告)号：US3436494A
公开(公告)日：1969-04-01
申请号：US3436494D
申请日：1965-10-11
申请人： R T BOZAK MFG CO THE
发明人： BOZAK RUDOLPH T
IPC分类号： H04R1/08 , H04R7/20 , H04R9/06 , H04R9/00 , H04R7/00
CPC分类号： H04R9/06 , H04R1/08 , H04R7/20

54. 发明授权

US3119888A Method of making a transducer diaphragm 失效
标题翻译：制造换能器膜片的方法
公开(公告)号：US3119888A
公开(公告)日：1964-01-28
申请号：US6819960
申请日：1960-11-09
申请人： DUKANE CORP
发明人： SUPITILOV MICHAEL C
IPC分类号： B29C43/00 , B29D99/00 , H04R7/12 , H04R7/14 , H04R9/00 , H04R31/00
CPC分类号： B29D99/005 , B29C43/00 , B29L2031/755 , H04R7/127 , H04R7/14 , H04R9/00 , H04R31/003

55. 发明授权

US2509224A Electroacoustical transducer 失效
标题翻译：电声换能器
公开(公告)号：US2509224A
公开(公告)日：1950-05-30
申请号：US55440744
申请日：1944-09-16
申请人： INT STANDARD ELECTRIC CORP
发明人： LAWRENCE GAYFORD MICHAEL
IPC分类号： H04R1/22 , H04R9/00 , H04R9/08 , H04R9/10
CPC分类号： H04R9/10 , H04R1/22 , H04R9/00 , H04R9/08

56. 发明授权

US2238741A Electrodynamic transducer 失效
公开(公告)号：US2238741A
公开(公告)日：1941-04-15
申请号：US25309739
申请日：1939-01-27
申请人： GEN ELECTRIC
发明人： HANS LAUFFER
IPC分类号： H04R1/22 , H04R9/00
CPC分类号： H04R1/22 , H04R9/00

57. 发明授权

US2205227A Electromechanical amplifier 失效
公开(公告)号：US2205227A
公开(公告)日：1940-06-18
申请号：US18961338
申请日：1938-02-09
申请人： PERU RADIO LAB INC
发明人： SMITH HOWARD H
IPC分类号： H04R9/00 , H04R23/02
CPC分类号： H04R23/02 , H04R9/00

58. 发明授权

US1637397A Telephone transmitter and receiver 失效
标题翻译：电话发射机和接收机
公开(公告)号：US1637397A
公开(公告)日：1927-08-02
申请号：US7191925
申请日：1925-11-28
申请人： FRANCIS SYKES ADRIAN
发明人： FRANCIS SYKES ADRIAN
IPC分类号： H04R9/00
CPC分类号： H04R9/00

59. 发明授权

US11641553B1 Magnetic field canceling audio devices 有权
公开(公告)号：US11641553B1
公开(公告)日：2023-05-02
申请号：US17493824
申请日：2021-10-04
申请人： SeeScan, Inc.
发明人： Ray Merewether , Mark S. Olsson
IPC分类号： H04R9/00 , H04R9/06 , G01V3/08 , H04R1/24 , H04R1/28 , H04R19/01 , H04R9/02 , H04R3/12 , H04R5/02
摘要： Magnetic field cancelling audio systems and associated devices are disclosed. In one embodiment, an audio system with two electromagnetic audio drivers positioned and electrically connected to reduce emitted magnetic fields over a range of predefined frequencies.

60. 发明授权

US11367555B2 Mounting substrate 有权
公开(公告)号：US11367555B2
公开(公告)日：2022-06-21
申请号：US16175884
申请日：2018-10-31
申请人： Murata Manufacturing Co., Ltd.
发明人： Shingo Ito
IPC分类号： H01F5/00 , H01F27/06 , H01F41/04 , H01F27/29 , H04R9/00 , H01F17/00 , H05K1/16 , B06B1/04 , H04R9/06 , H04R31/00 , H01F27/28 , H01F41/26 , H05K3/24 , H05K3/46 , H05K3/10
摘要： A mounting substrate includes a resin layer and a first conductor including a contact surface in contact with the resin layer. The first conductor includes a first surface facing toward the mounting surface and a second surface on a side opposite to the first surface and extends in a direction parallel or substantially parallel to the mounting surface. The first conductor has a difference of a maximum value and a minimum value of a distance between the first surface and the mounting surface smaller than a difference of a maximum value and a minimum value of a distance between the second surface and the mounting surface. The resin layer includes a resin wall portion surrounding an opening portion partially exposing the first conductor on the mounting surface side, and the first conductor includes an exposed portion defining a mounting electrode.

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