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1. 发明授权

US07382193B2 Preserving linearity of an isolator-free power amplifier by dynamically adjusting gain and phase 有权
标题翻译：通过动态调整增益和相位来保持无隔离器功率放大器的线性度
公开(公告)号：US07382193B2
公开(公告)日：2008-06-03
申请号：US10538632
申请日：2003-12-10
申请人： Saleh Osman , Richard F. Keenan , Jaroslaw Lucek
发明人： Saleh Osman , Richard F. Keenan , Jaroslaw Lucek
IPC分类号： H03G3/00
CPC分类号： H03F1/302 , H03F1/0272 , H03F1/32 , H03F1/52 , H03F3/191 , H03F3/24 , H03F2200/294 , H03F2200/372 , H03G3/3042
摘要： An amplifier circuit (100) includes a driver stage ( ) 120 with at least an active device (140) for pre-amplification and output of a pre-amplified signal; and an output stage (160) with at least an active device (180) for further amplification of the pre-amplified signal and output of an amplified signal. A phase shifter (155) shifts the phase of the pre-amplified signal. A detector (190) measures levels of forward and reflected parts of the amplified signal, and a gain and phase control circuit (145) independently and selectively controls and adjusts the phase shifter (155) for optimal amplifier performance and minimal difference between the forward and reflected signals. The gain and phase control circuit also independently and selectively controls and modifies the gain of the active devices (140, 180) of the driver and output stages (120, 160) as a function of the levels of the forward and reflected signals to substantially maintain constant linearity of the amplifier circuit (100) with load variations.
摘要翻译：放大器电路（100）包括具有用于预放大和输出预放大信号的至少一个有源器件（140）的驱动级（）120; 以及具有至少一个有源器件（180）的输出级（160），用于进一步放大预放大的信号并输出放大的信号。移相器（155）使预放大信号的相位移位。检测器（190）测量放大信号的正向和反射部分的电平，并且增益和相位控制电路（145）独立地并且选择性地控制和调整移相器（155）以获得最佳的放大器性能，并且前向和反射信号。增益和相位控制电路还独立地和选择性地控制和修改驱动器和输出级（120,160）的有源器件（140,180）的增益，作为前向和反射信号的电平的函数，以基本维持具有负载变化的放大器电路（100）的恒定线性度。

2. 发明授权

US07408404B2 Preserving linearity of an isolator-free power amplifier by dynamically switching active devices 有权
标题翻译：通过动态切换有源器件来保持无隔离器功率放大器的线性度
公开(公告)号：US07408404B2
公开(公告)日：2008-08-05
申请号：US10538624
申请日：2003-12-10
申请人： Saleh Osman , Richard F. Keenan , Jaroslaw Lucek
发明人： Saleh Osman , Richard F. Keenan , Jaroslaw Lucek
IPC分类号： H03F1/14
CPC分类号： H03F1/0277 , H03F1/32 , H03F1/52 , H03F2200/294 , H03F2200/372 , H03G1/0088
摘要： An amplifier circuit (100) includes a driver stage (120) with active devices (140) for pre-amplification and output of a pre-amplified signal; and an output stage (160) with active devices (180) for further amplification of the pre-amplified signal and output of an amplified signal. A detector (190) measures levels of forward and reflected parts of the amplified signal, and a control circuit (145) independently and selectively controls turning on and off of the active devices (140, 180) of the driver and output stages (120, 160) as a function of the levels of the forward and reflected signals to substantially maintain linearity of the amplifier circuit (100) with load variations.
摘要翻译：放大器电路（100）包括具有有源器件（140）的驱动器级（120），用于预放大和预放大信号的输出; 以及具有用于进一步放大预放大信号和输出放大信号的有源器件（180）的输出级（160）。检测器（190）测量放大信号的正向和反射部分的电平，并且控制电路（145）独立地并且选择性地控制驱动器和输出级（120,180）的有源器件（140,180）的导通和截止， 160）作为正向和反射信号的电平的函数，以基本上保持放大器电路（100）的负载变化的线性。

3. 发明申请

US20130220092A1 Dust Collection Assembly and a Tensioning System for a Saw 有权
标题翻译：灰尘收集组件和用于锯的张紧系统
公开(公告)号：US20130220092A1
公开(公告)日：2013-08-29
申请号：US13779820
申请日：2013-02-28
申请人： Richard F. Keenan
发明人： Richard F. Keenan
IPC分类号： B27B5/29 , F16M13/00
CPC分类号： B27B5/29 , B23D59/006 , B26D7/18 , B26D7/1863 , F16M13/00 , Y10T83/207 , Y10T83/2218
摘要： A saw (100) includes a sawdust collection assembly (2) having a chute (10) made of a material having a stretchability to be shaped responsive to movement of a blade housing (102) into a moveable sawdust path. An upper end (40) of a top portion (6) of the chute (10) is removably and reattachably engaged with a top attachment member (36) mounted to the blade housing (102). A bottom portion (8) of the chute (10) is removably and reattachably engaged with a bottom attachment member (26) mounted to a rear side (106C) of a fence (106) of the saw (100). Two side edges (44, 46) of the top portion (6) are respectively attached by two side tension cords (18) to left and right sides (106B, 106A) of the fence (106). One of the side tension cords (18) can be used with a tension block (20, 28) to form a tensioning system.
摘要翻译：锯（100）包括锯木屑收集组件（2），锯木屑收集组件（2）具有由材料制成的滑槽（10），该滑槽具有响应于叶片壳体（102）移动到可移动锯屑路径中的可拉伸性。斜槽（10）的顶部（6）的上端（40）可移除地并且可重新地与安装到叶片壳体（102）的顶部附接构件（36）接合。斜槽（10）的底部（8）可拆卸地与可安装在锯（100）的栅栏（106）的后侧（106C）上的底部附接构件26重新接合。顶部（6）的两个侧边缘（44,46）分别通过两个侧面张紧绳（18）连接到挡板（106）的左侧和右侧（106B，106A）。侧张力线（18）中的一个可以与张力块（20,28）一起使用以形成张紧系统。

4. 发明申请

US20100089497A1 Router Dust Collection Assembly 有权
标题翻译：路由器除尘装置
公开(公告)号：US20100089497A1
公开(公告)日：2010-04-15
申请号：US12349083
申请日：2009-01-06
申请人： Richard F. Keenan
发明人： Richard F. Keenan
IPC分类号： B23Q11/00 , B27C5/02 , B27G21/00
CPC分类号： B23Q11/0046 , Y10T83/207 , Y10T409/304088
摘要： A dust collector is provided for use with a router that is mounted to the underside of a router table. The device serves as a means for collecting dust from both upper and lower surfaces of a cutting tool. The dust collector includes a flexible cup attachable to the underside of the router table, a vacuum hose opening on the cup connectable to a workshop vacuum hose and reducer fitting in combination are attachable to a router table fence and to one of two small openings of a “T” connector fitting on the other end, a vacuum hose attachable to the vacuum hose opening of the cup on one end and attachable to the other of two small openings of the “T” connector on the other end, a larger opening on the “T” connector connectable to a vacuum hose of a workshop vacuum, which in combination.
摘要翻译：提供集尘器用于安装在路由器台的下侧的路由器。该装置用作从切割工具的上表面和下表面收集灰尘的装置。集尘器包括可连接到路面工作台的下侧的柔性杯，可连接到车间真空软管的杯子上的真空软管开口和组合的减速器配件可附接到路由器台栅栏和两个小的开口之一在另一端的“T”型连接器配件，一端连接到杯子的真空软管开口的真空软管，并可连接到另一端的“T”连接器的两个小开口中的另一个，另一端的较大开口 “T”连接器可连接到车间真空的真空软管，它们组合在一起。

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