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    • 1. 发明授权
    • Modulation and demodulation system employing AM-PSK and QPSK
communication system using digital signals
    • 采用数字信号采用AM-PSK和QPSK通信系统的调制解调系统
    • US5084903A
    • 1992-01-28
    • US631760
    • 1990-12-21
    • Robert P. McNamaraTimothy P. MurphyJames C. Long
    • Robert P. McNamaraTimothy P. MurphyJames C. Long
    • H04L12/28H04L27/00
    • H04L12/2801H04L27/00
    • A communication network having a first broadband communications channel or transmitting bus and a second broadband communications channel or receiving bus, wherein the first broadband communications channel passes information upstream to a head end employing an offset quadrature phase shift keyed (OQPSK) modulator in bursts, and the second broadband communications channel passes information downstream from the head end to remote nodes in a continuous bit stream. All nodes of the system are coupled to both the first communications channel and the second communications channel. According to the invention, modulation of signals applied to the first communication channel is optimized for burst communication from a plurality of sources to central control at the head end, and modulation applied to the second communications channel is optimized for continuous communication from the central source to a target node. In one specific embodiment, the communication between the central unit (head end) and any one of a choice of target nodes through the second communication channel is by means of three-level class one partial response AM-PSK modulated onto a carrier, which is optimized for continuous operation.
    • 一种具有第一宽带通信信道或发射总线和第二宽带通信信道或接收总线的通信网络,其中所述第一宽带通信信道使用脉冲串中的偏移正交相移键控(OQPSK)调制器将信息上行传送到头端,以及 第二宽带通信信道以连续比特流将信头从头端向下游传送到远端节点。 系统的所有节点都耦合到第一通信信道和第二通信信道。 根据本发明,适用于第一通信信道的信号的调制被优化用于从头部到多个源到中央控制的突发通信,并且对从第二通信信道到第二通信信道的连续通信优化用于从中央源到 目标节点。 在一个具体实施例中,中央单元(头端)和通过第二通信信道的目标节点的选择中的任一个之间的通信是通过调制到载波上的三级一类部分响应AM-PSK来实现的, 优化连续运行。
    • 2. 发明授权
    • Modulation and demodulation system employing AM-PSK and FSK for
communication system using digital signals
    • 使用AM-PSK和FSK的调制解调系统用于使用数字信号的通信系统
    • US5088111A
    • 1992-02-11
    • US317214
    • 1989-02-28
    • Robert P. McNamaraTimothy P. Murphy
    • Robert P. McNamaraTimothy P. Murphy
    • H04L12/28H04L25/34H04L27/00
    • H04L27/00H04L12/2801
    • A communication network having a first broadband communications channel or transmitting bus and a second broadband communications channel or receiving bus, wherein the first broadband communications channel is for passing information upstream to a head end and the second broadband communications channel is for passing information downstream from the head end to remote nodes. All nodes of the system are coupled to both the first communications channel and the second communications channel. According to the invention, modulation of signals applied to the first communication channel is optimized for burst communication from a plurality of sources to central control at the head end, and modulation applied to the second communications channel is optimized for continuous communication from the central source to a target node.
    • 一种具有第一宽带通信信道或发射总线和第二宽带通信信道或接收总线的通信网络,其中所述第一宽带通信信道用于将信息上行传送到头端,并且所述第二宽带通信信道用于将信息下行 头端到远程节点。 系统的所有节点都耦合到第一通信信道和第二通信信道。 根据本发明,适用于第一通信信道的信号的调制被优化用于从头部到多个源到中央控制的突发通信,并且对从第二通信信道到第二通信信道的连续通信优化用于从中央源到 目标节点。
    • 9. 发明申请
    • SPHERICAL BEARING TRIPLE-LIP SEAL
    • 球形轴承三角密封
    • US20110091143A1
    • 2011-04-21
    • US12992315
    • 2009-05-28
    • Timothy P. MurphyLiviu V. AntonIoana C. SavinRichard BorowskiMark Esposito
    • Timothy P. MurphyLiviu V. AntonIoana C. SavinRichard BorowskiMark Esposito
    • F16C33/76F16J15/32F16C19/02
    • F16J15/3232F16C23/043F16C33/74
    • A seal component (100, 200) having a triple-lip configuration for sealing against a moving surface, such as the inner ring race surface (12, 12′) of a spherical plain bearing (14, 14′). The triple-lip configuration incorporates a pair of outward inclined seal lips (102, 202, 104, 204) for providing protection from external contaminates, and a third inwardly inclined seal lip (106, 206) which is orientated to provide lubricant or grease retention within the sealed bearing (14, 14′). The size and configuration of the third seal lip (106, 206) is selected to minimize surface friction and to avoid seal lip inversion during oscillatory motion of the bearing components during use. A retention surface (110a, 210) is disposed to abut against the outer ring race surface (10b, 10b) to resist roll-out displacement of the seal component (100, 200) during use.
    • 具有用于密封诸如球面滑动轴承(14,14')的内圈圈表面(12,12')的运动表面的三唇形结构的密封部件(100,200)。 三唇形结构包括一对向外倾斜的密封唇缘(102,202,104,204),用于提供对外部污染物的保护,以及第三向内倾斜的密封唇缘(106,206),其被定向以提供润滑剂或润滑脂保留 在密封轴承(14,14')内。 选择第三密封唇缘(106,206)的尺寸和构造以使表面摩擦最小化,并且避免在使用期间轴承部件的振荡运动期间的密封唇反转。 保持表面(110a,210)设置成抵靠外圈座圈表面(10b,10b),以防止密封件(100,200)在使用期间的滚出位移。