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    • 112. 发明授权
    • Convertible cart
    • 敞篷车
    • US08070181B2
    • 2011-12-06
    • US12568077
    • 2009-09-28
    • Paul Bradley ForrestGrant M. MasonThomas Perelli
    • Paul Bradley ForrestGrant M. MasonThomas Perelli
    • B62B3/02
    • B62B3/02B62B2206/02
    • The convertible cart comprises a first platform and a platform assembly. The platform assembly comprises a second platform and a third platform and is pivotably connected to the first platform. The platform assembly moves between a first position where the second platform is disposed above the first platform and a second position where the third platform forms a continuous platform with the first platform. In another embodiment the cart comprises a first platform and a second platform movable between a first position where said second platform is disposed above the first platform and a second position where the third platform is coplanar with the first platform. Methods of converting a cart between a utility cart and a platform truck are also provided.
    • 敞篷车包括第一平台和平台组件。 平台组件包括第二平台和第三平台并且可枢转地连接到第一平台。 所述平台组件在所述第二平台设置在所述第一平台之上的第一位置与所述第三平台与所述第一平台形成连续平台的第二位置之间移动。 在另一个实施例中,推车包括第一平台和第二平台,第二平台可在第一位置和第二平台之间移动,第一位置和第二平台之间,第一位置和第二平台与第一平台共面。 还提供了在实用车和平台车之间转换车的方法。
    • 115. 发明授权
    • Single cavity acoustic resonators and electrical filters comprising single cavity acoustic resonators
    • 单腔声谐振器和包括单腔声谐振器的电过滤器
    • US07889024B2
    • 2011-02-15
    • US12201641
    • 2008-08-29
    • Paul BradleyDavid A. Feld
    • Paul BradleyDavid A. Feld
    • H03H9/15H03H9/54H03H9/70
    • H03H9/583H03H9/585H03H9/605
    • A single cavity acoustic resonator comprises: a first electrode; a second electrode; a third electrode disposed between the first electrode and the second electrode. The single cavity acoustic resonator also comprises: a first piezoelectric layer disposed between the third electrode and the first electrode, and comprising a first C-axis having an orientation; and a second piezoelectric layer disposed between the third electrode and the second electrode, and comprising a second C-axis having an orientation parallel to the first C-axis. Application of a time varying electrical signal at a drive frequency to either the third electrode or to the first and second electrodes results in a resonance of the single cavity acoustic resonator at twice a fundamental resonant frequency and a cancellation of substantially all even-order mixing products in the single cavity resonator. An electrical filter and a duplexer are also described.
    • 单腔声谐振器包括:第一电极; 第二电极; 设置在第一电极和第二电极之间的第三电极。 单腔声谐振器还包括:设置在第三电极和第一电极之间的第一压电层,并且包括具有取向的第一C轴; 以及设置在所述第三电极和所述第二电极之间的第二压电层,并且包括具有平行于所述第一C轴的取向的第二C轴。 以驱动频率将时变电信号施加到第三电极或第一和第二电极,导致单谐振腔谐振器在基本共振频率的两倍和基本上所有偶数阶混合产物的消除 在单腔谐振器中。 还描述了一种电动过滤器和双工器。
    • 116. 发明申请
    • CONVERTIBLE CART
    • 可转换卡
    • US20100219615A1
    • 2010-09-02
    • US12568077
    • 2009-09-28
    • Paul Bradley ForrestGrant M. MasonThomas Perelli
    • Paul Bradley ForrestGrant M. MasonThomas Perelli
    • B62B3/02
    • B62B3/02B62B2206/02
    • The convertible cart comprises a first platform and a platform assembly. The platform assembly comprises a second platform and a third platform and is pivotably connected to the first platform. The platform assembly moves between a first position where the second platform is disposed above the first platform and a second position where the third platform forms a continuous platform with the first platform. In another embodiment the cart comprises a first platform and a second platform movable between a first position where said second platform is disposed above the first platform and a second position where the third platform is coplanar with the first platform. Methods of converting a cart between a utility cart and a platform truck are also provided.
    • 敞篷车包括第一平台和平台组件。 平台组件包括第二平台和第三平台,并且可枢转地连接到第一平台。 所述平台组件在所述第二平台设置在所述第一平台之上的第一位置与所述第三平台与所述第一平台形成连续平台的第二位置之间移动。 在另一个实施例中,推车包括第一平台和第二平台,第二平台可在第一位置和第二平台之间移动,第一位置和第二平台之间,第一位置和第二平台与第一平台共面。 还提供了在实用车和平台车之间转换车的方法。
    • 118. 发明申请
    • SINGLE CAVITY ACOUSTIC RESONATORS AND ELECTRICAL FILTERS COMPRISING SINGLE CAVITY ACOUSTIC RESONATORS
    • 单孔声学谐振器和包含单孔声谐振器的电子滤波器
    • US20100052815A1
    • 2010-03-04
    • US12201641
    • 2008-08-29
    • Paul BradleyDavid A. Feld
    • Paul BradleyDavid A. Feld
    • H03H9/70H03H9/54
    • H03H9/583H03H9/585H03H9/605
    • A single cavity acoustic resonator comprises: a first electrode; a second electrode; a third electrode disposed between the first electrode and the second electrode. The single cavity acoustic resonator also comprises: a first piezoelectric layer disposed between the third electrode and the first electrode, and comprising a first C-axis having an orientation; and a second piezoelectric layer disposed between the third electrode and the second electrode, and comprising a second C-axis having an orientation parallel to the first C-axis. Application of a time varying electrical signal at a drive frequency to either the third electrode or to the first and second electrodes results in a resonance of the single cavity acoustic resonator at twice a fundamental resonant frequency and a cancellation of substantially all even-order mixing products in the single cavity resonator. An electrical filter and a duplexer are also described.
    • 单腔声谐振器包括:第一电极; 第二电极; 设置在第一电极和第二电极之间的第三电极。 单腔声谐振器还包括:设置在第三电极和第一电极之间的第一压电层,并且包括具有取向的第一C轴; 以及设置在所述第三电极和所述第二电极之间的第二压电层,并且包括具有平行于所述第一C轴的取向的第二C轴。 以驱动频率将时变电信号应用于第三电极或第一和第二电极导致单谐振腔谐振器的共振频率为基本谐振频率的两倍,并且基本上消除了基本上所有偶数阶的混合产物 在单腔谐振器中。 还描述了一种电动过滤器和双工器。
    • 119. 发明授权
    • General matching network for acoustic wave filters and acoustic resonators
    • 声波滤波器和声谐振器的通用匹配网络
    • US07501912B2
    • 2009-03-10
    • US11505453
    • 2006-08-17
    • Tiberiu JamnealaPaul BradleyMichael Frank
    • Tiberiu JamnealaPaul BradleyMichael Frank
    • H03H7/46
    • H03H9/706H03H9/0004
    • A method and circuit matches a device to n filters, wherein each filter is a SAW filter, BAW filter, or FBAR filter. The method and system: (a) provide an inductor or transmission line connected between a common terminal and ground; (b) provide a plurality of capacitance values (C1m, C2m, . . . , Cnm) each corresponding to one of the n filters; and (c) for each of the n filters, directly connect a first terminal of the filter to either: (1) the common terminal, or (2) a first terminal of a corresponding capacitor having the correspondence capacitance value calculated in step (b), where a second terminal of the corresponding capacitor is directly connected to the common terminal.
    • 方法和电路将器件与n个滤波器相匹配,其中每个滤波器是SAW滤波器,BAW滤波器或FBAR滤波器。 方法和系统:(a)提供连接在公共端子和地之间的电感器或传输线; (b)提供每个对应于n个滤波器之一的多个电容值(C1m,C2m,...,Cnm) 和(c)对于n个滤波器中的每一个,直接将滤波器的第一端连接到:(1)公共端子,或者(2)具有在步骤(b)中计算的对应电容值的相应电容器的第一端子 ),其中相应电容器的第二端子直接连接到公共端子。