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公开(公告)号：US20070127767A1
公开(公告)日：2007-06-07
申请号：US11606403
申请日：2006-11-28
Applicant: James Croft , David Graebener
Inventor： James Croft , David Graebener
IPC: H04R25/00
CPC classification number: H04R9/047
Abstract: A substantially single-ended planar-magnetic transducer comprises a thin film, diaphragm having a first surface side and a second surface side and including a conductive surface area for converting an input electrical signal into a corresponding acoustic output, said at least one diaphragm including a predetermined active region. A high energy magnetic structure has sufficient magnetic field strength and is configured with respect to the diaphragm to drive the diaphragm as a substantially single-ended audio transducer. Mounting structure is coupled to the diaphragm to hold the diaphragm in a predetermined state of tension and at a predetermined distance from the high energy magnetic structure over an extended period of time including periods of use and nonuse. The diaphragm provides improved performance characteristics by using a polyethylenenaphthalate film as a base material for the diaphragm.
Abstract translation: 基本上单端的平面磁换能器包括薄膜，具有第一表面侧和第二表面侧的隔膜，并且包括用于将输入电信号转换成对应声输出的导电表面区域，所述至少一个隔膜包括 预定的活动区域。 高能磁结构具有足够的磁场强度，并且相对于隔膜构造以驱动隔膜作为基本上单端的音频换能器。 安装结构联接到隔膜，以将隔膜保持在预定的张力状态并且在包括使用时间和不使用的延长的时间段内与高能磁性结构预定距离。 隔膜通过使用聚萘二甲酸乙二醇酯膜作为隔膜的基材提供了改进的性能特征。
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Patent Agency Ranking
公开(公告)号：US20060050923A1
公开(公告)日：2006-03-09
申请号：US11209356
申请日：2005-08-23
Applicant: James Croft , David Graebener
Inventor： James Croft , David Graebener
IPC: H04R9/06
Abstract: A planar magnetic transducer having enhanced magnetic structures which increases performance over a signal-ended device but mitigates some of the drawback of double ended devices, including a supporting structure, a diaphragm incorporating a coil conductor at least primary magnetic structure, and a secondary magnetic structure can be added, including mitigation of high frequency resonance and attenuation by providing a more open architecture, including spacing the magnets wider apart, configuring the inter-magnet spaces to provide better acoustic performance, using high-energy magnets, which magnets can be shaped to form at least a part of the shaped inter-magnet space.
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公开(公告)号：US07251342B2
公开(公告)日：2007-07-31
申请号：US10169218
申请日：2001-03-02
Applicant: David Graebener
Inventor： David Graebener
CPC classification number: H04R9/047 , H04R7/04 , H04R7/18 , H04R7/24 , H04R9/025 , H04R31/003 , H04R2307/029
Abstract: A single end planar magnetic speaker system having at least one thin film, flexible diaphragm (72, 90) having a front side and a rear side for converting an input electrical signal into a corresponding acoustic output, the at least one diaphragm including a predetermined conductive region (76) and a predetermined non-conductive region; a magnetic structure (92) utilizing nonferite high energy magnets of a predetermined thickness wherein the magnets are each at least as wide as they are deep; the magnets having a magnetic strength wherein when compared to magnets of a ferrite type of same width as the nonferite high energy magnets but which have increased depth to yield at least nearly the same magnetic strength as the high energy magnets in the magnetic structure, doubling the depth of the high energy magnets in the magnetic structure, doubling the depth of the high energy magnets in the magnetic structure yields an increase in speaker sensitivity of at least 3 dB while the doubling the depth of the ferrite type magnet will yield a gain of less than 3 dB, and the system further includes a mounting structure coupled to the diaphragm to capture the diaphragm, to hold it in a predetermined state of tension and space it at a predetermined distance from the magnetic structure.
Abstract translation: 一种具有至少一个薄膜的单端平面磁性扬声器系统，具有前侧和后侧的柔性隔膜，用于将输入电信号转换成对应的声输出，所述至少一个隔膜包括预定的导电 区域（76）和预定的非导电区域; 使用具有预定厚度的非优质高能量磁体的磁性结构（92），其中所述磁体各自至少与它们一样宽; 磁体具有磁强度，其中当与非优质高能量磁体相比，具有相同宽度的铁氧体类型的磁体相比，其具有增加的深度以产生与磁性结构中的高能量磁体至少几乎相同的磁强度时， 磁性结构中的高能量磁体的深度，使磁性结构中的高能量磁体的深度加倍，使扬声器灵敏度增加至少3dB，同时铁氧体型磁体的深度加倍将产生较少的增益 超过3dB，并且该系统还包括耦合到隔膜以捕获隔膜的安装结构，以将其保持在预定的张力状态并将其定位在离磁结构预定距离处。
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公开(公告)号：US07142688B2
公开(公告)日：2006-11-28
申请号：US10055821
申请日：2002-01-22
Applicant: James J. Croft, III , David Graebener
Inventor： James J. Croft, III , David Graebener
IPC: H04R25/00
CPC classification number: H04R9/047
Abstract: A planar-magnetic electro-acoustic transducer including a support structure and a magnetic structure carried by the support structure, the magnetic structure comprising a multiplicity of high-energy magnets configured so as to have shared loop field maxima and local loop field maxima, and a diaphragm carried by the support structure, comprising a plurality of conductors carried by and coupled to the diaphragm, said conductors being disposed in relation to local loop maxima and configured to exploit the energy of local loop maxima, as well as the energy of shared loop maxima in driving the diaphragm to produce an acoustic output; and the magnetic structure can be configured so that it includes magnet rows, and the transverse cross-sectional width of the magnets does not exceed their transverse cross-sectional height, and the distance between adjacent elongated magnet rows is greater than one half the width of either of the magnets of the adjacent magnet rows.
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公开(公告)号：US20090097693A1
公开(公告)日：2009-04-16
申请号：US12079415
申请日：2008-03-25
Applicant: James J. Croft, III , David Graebener
Inventor： James J. Croft, III , David Graebener
Abstract: A planar magnetic transducer having enhanced magnetic structures which increases performance over a signal-ended device but mitigates some of the drawback of double ended devices, including a supporting structure, a diaphragm incorporating a coil conductor at least primary magnetic structure, and a secondary magnetic structure can be added, including mitigation of high frequency resonance and attenuation by providing a more open architecture, including spacing the magnets wider apart, configuring the inter-magnet spaces to provide better acoustic performance, using high-energy magnets, which magnets can be shaped to form at least a part of the shaped inter-magnet space.
Abstract translation: 一种具有增强的磁结构的平面磁换能器，其增加了信号端装置的性能，但是减轻了双端装置的一些缺点，包括支撑结构，至少包含初级磁结构的线圈导体的振膜和辅助磁结构 可以通过提供更开放的架构来减轻高频谐振和衰减，包括使磁体间隔较宽，配置磁体间空间以提供更好的声学性能，使用高能磁体，磁体可以成形为 形成成形的磁体间空间的至少一部分。
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公开(公告)号：US06934402B2
公开(公告)日：2005-08-23
申请号：US10075936
申请日：2002-01-25
Applicant: James J. Croft, III , David Graebener
Inventor： James J. Croft, III , David Graebener
Abstract: A planar magnetic transducer having enhanced magnetic structures which increases performance over a single-ended device but mitigates some of the drawbacks of double ended devices, including a supporting structure, a diaphragm incorporating a coil conductor at least a primary magnetic structure, and a secondary magnetic structure can be added, including mitigation of high frequency resonance and attenuation by providing a more open architecture, including spacing the magnets wider apart, configuring the inter-magnet spaces to provide better acoustic performance, using high-energy magnets, which magnets can be shaped to form at least a part of the shaped inter-magnet space.
Abstract translation: 一种具有增强的磁结构的平面磁换能器，其增加了单端器件的性能，但是减轻了双端器件的一些缺点，包括支撑结构，包含至少一个主磁结构的线圈导体的隔膜和次级磁 可以添加结构，包括通过提供更开放的架构来减轻高频谐振和衰减，包括使磁体间隔较宽，配置磁体间空间以提供更好的声学性能，使用高能磁体，磁体可以被成形 以形成成形的磁体间空间的至少一部分。
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