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31. 发明授权

US5429002A Coriolis-type fluid mass flow rate measurement device and method employing a least-squares algorithm 失效
标题翻译：科里奥利流体质量流量测量装置和采用最小二乘法的方法
公开(公告)号：US5429002A
公开(公告)日：1995-07-04
申请号：US241423
申请日：1994-05-11
申请人： Gerald A. Colman
发明人： Gerald A. Colman
IPC分类号： G01F1/84 , G01R25/00
CPC分类号： G01F1/8436
摘要： A Coriolis-type fluid flow rate measuring system splits a fluid flow that is to be measured into two equal half flows and passes the same respectively through two physically similar conduits which are oscillated about respective parallel oscillation axes. Analog sinusoidal signals corresponding to relative velocity of motion between the two conduits are obtained at two locations, the analog signals a digitized, and a conventional microprocessor is used to apply a least-squares sine fit to the digitized data to determine to a very high degree of accuracy a phase shift between the signals. An empirical proportionality factor is determined for the system to relate phase shift to fluid flow rate and is used to determine the fluid flow rate. The least-squares sine fit provides an accurate, economically computed fluid flow rate, and the apparatus is highly insensitive to temperature induced effects, harmonic distortions, and the combined effects of noise and harmonic distortion.
摘要翻译：科里奥利型流体流量测量系统将要测量的流体流分成两个相等的半流量，并将其分别通过两个物理相似的导管，这些管道围绕各自的平行振荡轴线振荡。在两个位置处获得对应于两个管道之间的相对运动速度的模拟正弦信号，模拟信号被数字化，并且常规微处理器用于对数字化数据应用最小二乘正弦拟合以非常高的程度精确度是信号之间的相移。确定系统的经验比例因子将相移与流体流速相关联，并用于确定流体流速。最小二乘正弦拟合提供了精确的经济计算的流体流速，并且该装置对温度感应效应，谐波失真以及噪声和谐波失真的组合影响高度不敏感。

32. 发明授权

US5422939A Parallel off-hook detection for both line-available and phone pick-up detection 失效
标题翻译：线路可用和电话接听检测的并行摘机检测
公开(公告)号：US5422939A
公开(公告)日：1995-06-06
申请号：US102325
申请日：1993-08-05
申请人： Richard A. Kramer , Scott C. Swanson
发明人： Richard A. Kramer , Scott C. Swanson
IPC分类号： H04M1/72 , H04M1/82 , H04M11/06 , H04M11/00 , H04M1/00
CPC分类号： H04M1/82 , H04M11/06 , H04M1/72 , Y10S379/902
摘要： A secondary communications device, such as a modem, a facsimile machine, an automatic meter reader or an answering machine, shares a telephone line with a subscriber's telephone and must grant the telephone primary access to the line. The present invention prevents the secondary device from seizing the line when the telephone is already off-hook and will terminate a line seizure by the secondary device if the subscriber picks up the telephone handset during use of the line by the secondary device. An average interval for charging a capacitor to a threshold voltage in response to an on-hook voltage appearing across the telephone line is determined. When the secondary communications device is ready to use the line, circuitry measures an interval for charging the capacitor in response to the current voltage appearing across the telephone line. The secondary communication device seizes the line only if the measured interval does not exceed the average interval by more than a predetermined amount. After seizure by the secondary communication device, a steady-state condition is brought about between the secondary device, the line steady-state impedance, and the central office voltage source. If the line impedance drops from the steady-state value, the circuitry assumes that the subscriber has taken the telephone off-hook and terminates the line seizure by the secondary device.
摘要翻译：诸如调制解调器，传真机，自动仪表读取器或应答机之类的辅助通信设备与用户电话共享电话线，并且必须授予电话主要访问线路。本发明在电话机已经摘机时防止辅助设备占用线路，并且如果用户在辅助设备使用该线路期间拿起电话手机，则终止由辅助设备的线路占用。确定响应于电话线上出现的挂机电压而将电容器充电到阈值电压的平均间隔。当辅助通信设备准备好使用线路时，电路测量响应于电话线上出现的当前电压而对电容器充电的间隔。次要通信装置仅在所测量的间隔不超过平均间隔超过预定量时占用线路。在二次通信装置卡住之后，在二次装置，线路稳态阻抗和中心局电压源之间产生稳态条件。如果线路阻抗从稳态值下降，则电路假定用户已将电话摘机并终止辅助设备的线路占用。

33. 发明授权

US5422565A Method and system for sensing removal of a utility meter from its socket 失效
标题翻译：用于从其插座中感测到将公用电表拆下的方法和系统
公开(公告)号：US5422565A
公开(公告)日：1995-06-06
申请号：US163215
申请日：1993-12-07
申请人： Scott C. Swanson
发明人： Scott C. Swanson
IPC分类号： G01R11/24 , G08B13/14 , G01R21/06 , G08B21/00
CPC分类号： G01R22/066 , G08B13/1409
摘要： A method and system is disclosed for indication and prevention of tampering with an electricity meter having control circuitry for automatic remote reading. The control circuitry, provided externally of the meter in a base or base extension, to which the meter is connected, is also used for tamper detection. Embodiments of the invention include use of optical sensing, voltage detection and proximity detection. Ambient light sensing may be performed to detect separation of the meter from the external receptacle. Reflected light to a reflective surface of the meter is sensed to determine if the meter is properly engaged. Presence of a meter connection plug element may be sensed either optically or by position responsive switch. Voltage of the utility supply and meter user output may be monitored to determine tampering.
摘要翻译：公开了一种用于指示和防止用具有用于自动远程读取的控制电路的电表的篡改的方法和系统。在仪表连接到的基座或基座延伸部的仪表外部提供的控制电路也用于篡改检测。本发明的实施例包括使用光学感测，电压检测和接近检测。可以执行环境光感测以检测仪表与外部插座的分离。感测到到仪表的反射表面的反射光，以确定仪表是否正确接合。仪表连接插头元件的存在可以光学地或通过位置响应开关来感测。可以监控公用电源和仪表用户输出的电压，以确定篡改。

34. 外观设计

USD348924S Snap-in strainer 失效
公开(公告)号：USD348924S
公开(公告)日：1994-07-19
申请号：US702202
申请日：1991-05-17
申请人： Stanley L. Merrett
设计人： Stanley L. Merrett

35. 发明授权

US5257643A Dry hydrant 失效
标题翻译：干消火栓
公开(公告)号：US5257643A
公开(公告)日：1993-11-02
申请号：US925677
申请日：1992-08-07
申请人： Stanley L. Merrett
发明人： Stanley L. Merrett
IPC分类号： E02B13/02 , E03B3/04 , E03B9/02
CPC分类号： E03B3/04 , E02B13/02 , Y10T137/402 , Y10T137/8807
摘要： A dry (unpressurized) hydrant utilizes a hydrant pipe formed from PVC. One end engages a sliding swivel mount attached to a post with the other end of the pipe being free to swing and to be placed within a nearby body of water. The free end may include a strainer assembly, also formed of a PVC material. The strainer end may be placed at a predetermined depth within a body of water, such as a lake, pond or the like, by means of a second support located proximate the body of water. Alternatively, the strainer end of the hydrant pipe may be provided with a buoyant float to maintain the level of the strainer end of the hydrant pipe just below the water surface. In another embodiment, the strainer end of the hydrant pipe is provided with a rotating wheel assembly which enables the strainer end of the hydrant pipe to be rolled into position beneath the surface of the body of water. The dry hydrant is formed from inexpensive and lightweight materials and can be stored dry when not in use.
摘要翻译：干燥（非加压）消防栓使用由PVC形成的消防栓管。一端接合附接到柱的滑动旋转座，管的另一端自由摆动并放置在附近的水体内。自由端可以包括也由PVC材料形成的过滤器组件。过滤器端可以通过位于水体附近的第二支撑件放置在诸如湖泊，池塘等的水体内的预定深度处。或者，消防龙头管的过滤器端可以设置浮力浮子，以将消防龙头管的过滤器端的水平保持在水面正下方。在另一个实施例中，消火栓管的过滤器端部设置有旋转轮组件，其使得消火栓管的过滤器端能够滚动到水体表面下方的位置。干消火栓由廉价轻质的材料形成，可在不使用时储存干燥。

36. 发明授权

US5216357A Real time solid state register having battery backup 失效
标题翻译：具有电池备份的实时固态寄存器
公开(公告)号：US5216357A
公开(公告)日：1993-06-01
申请号：US641385
申请日：1991-01-14
申请人： Richard Coppola , Thomas G. Street , Richard L. Riggs
发明人： Richard Coppola , Thomas G. Street , Richard L. Riggs
IPC分类号： G01R11/25 , G01R11/56 , G01R21/133
CPC分类号： G01R21/133 , G01R11/25 , G01R11/56 , Y04S20/36
摘要： A microprocessor based time-of-use electricity meter register uses an external real time clock powered by a backup battery during a power outage to measure real time elapsed during the outage. Upon detection of a power outage, line power and real time data are transferred by the microprocessor to an external, non-volatile memory, the external real time clock is energized by the backup battery and the clock reset to accumulate elapsed real time (days, hours, minutes, seconds) during the duration of the outage. Upon resumption of line power, the elapsed real time accumulated by the clock and the content of the non-volatile memory are transferred to the microprocessor, the backup battery is disconnected from the external real time clock and the real time previously stored in the nonvolatile memory is updated by the elapsed real time so that no customer billing data are lost during the outage.
摘要翻译：基于微处理器的使用时间的电表寄存器在断电期间使用由备用电池供电的外部实时时钟来测量在中断期间的实时时间。在检测到停电时，线路电源和实时数据由微处理器传输到外部非易失性存储器，外部实时时钟由备用电池供电，时钟复位以实时累积（天，小时，分钟，秒）。在恢复线路功率时，由时钟累积的经过实际时间和非易失性存储器的内容被传送到微处理器，备用电池与外部实时时钟和先前存储在非易失性存储器中的实时断开由经过的实时更新，以便在停电期间没有客户的计费数据丢失。

37. 发明授权

US5134650A Dial inbound meter interface unit (MIU) for automatic meter reading using no subscriber line access controller 失效
标题翻译：拨号入站仪表接口单元（MIU），用于无需用户线路接入控制器的自动抄表
公开(公告)号：US5134650A
公开(公告)日：1992-07-28
申请号：US644173
申请日：1991-01-22
申请人： James M. Blackmon
发明人： James M. Blackmon
IPC分类号： H04M11/00
CPC分类号： H04M11/002
摘要： The present invention is a method by which a dial inbound MIU is able to provide for connection with a central station computer without the need for any specialized telephone equipment at the telephone company's central office. If the customer's phone has been called, the invention detects whether the customer has answered. It then waits until the customer hangs up, and when the customer hangs up it siezes the line and waits for a modem tone indicative of the presence of the central station computer waiting to establish communication. If that modem tone is present, the MIU will connect to the central computer and permit communication to take place before releasing the phone line.
摘要翻译：本发明是一种方法，通过该方法，拨号入口MIU能够提供与中心站计算机的连接，而不需要电话公司的中心局的任何专门的电话设备。如果客户的电话已经被呼叫，则本发明检测客户是否已经回答。然后等待客户挂断，当客户挂机时，它屏蔽线，并等待调制解调器音，指示中央电脑等待建立通信的存在。如果存在调制解调器音调，则MIU将连接到中央计算机，并允许在发布电话线之前进行通信。

38. 发明授权

US5095761A Coriolis-type mass flow meter for sanitary use 失效
标题翻译：科里奥利型卫生用质量流量计
公开(公告)号：US5095761A
公开(公告)日：1992-03-17
申请号：US544784
申请日：1990-06-27
申请人： Gregory J. Nortz , W. Tom Clark
发明人： Gregory J. Nortz , W. Tom Clark
IPC分类号： G01F1/84
CPC分类号： G01F1/8413 , G01F1/8477
摘要： A Coriolis-type mass flow meter for use in sanitary applications. A pair of sensing tubes have their ends rigidly mounted within bores formed within identical inlet and outlet fixtures. The ends of the tubes fit snugly within the bores and are ends brought out flush with the ends of the bores. The flush ends of the tubes are secured to the bores by means of welding. An annular flange is formed about the flush tube ends of the inlet and outlet fixtures to allow easy assembly and removal of the mass flow meter from its associated fluid flow pipeline or conduit. The inlet and outlet fixtures and tubes preferably are formed from a non-reactive, weldable material such as stainless steel. The mounting arrangement of the tubes within the bores of the inlet and outlet fixtures makes it easy to secure the tube ends to the fixtures by means of welding in a readily accessible location. These welds can then be easily smoothed or polished to remove any possible obstructions to fluid flow or hiding places for contamination. This arrangement results in a mass flow meter which is acceptable for sanitary applications, e.g. the measuring of mass flow and/or density of foodstuffs.
摘要翻译：科里奥利型质量流量计，用于卫生应用。一对感测管的端部刚性地安装在形成在相同入口和出口固定装置内的孔内。管的端部紧密地配合在孔内，并且端部与孔的端部齐平。管的平齐端通过焊接固定到孔。围绕入口和出口固定装置的冲洗管端部形成环形凸缘，以便容易地从其相关联的流体流动管道或导管装配和移除质量流量计。入口和出口夹具和管优选地由不可反应的可焊接材料形成，例如不锈钢。管道在入口和出口固定装置的孔内的安装布置使得容易通过在容易接近的位置的焊接将管端固定到固定装置上。这些焊缝然后可以容易地平滑或抛光，以消除任何可能的阻碍流体流动或隐藏的污染场所。这种布置导致质量流量计对于卫生应用是可接受的，例如，测量食品的质量流量和/或密度。

39. 发明授权

US4968970A Method of and system for power line carrier communications 失效
标题翻译：电力线载波通信的方法和系统
公开(公告)号：US4968970A
公开(公告)日：1990-11-06
申请号：US343202
申请日：1989-04-26
申请人： Eric LaPorte
发明人： Eric LaPorte
IPC分类号： H03M7/00 , H02J13/00 , H04B1/713 , H04B3/54 , H04B14/04 , H04L1/00 , H04L27/26
CPC分类号： H04B1/713 , H02J13/0031 , H02J13/0034 , H04B3/542 , H04B2203/5416 , H04B2203/5433 , H04B2203/5483 , H04B2203/5491 , Y02E60/7892 , Y04S40/146
摘要： The transmitter in a power line communications system applies to the power line encoded logical-one and logical-zero bit signals consisting of signals formed respectively of predetermined different sequences of frequencies. The receiver, coupled to the power line, includes a first homodyne, non-coherent, quadratic demodulator for demodulating the logical-one bits and a second for demodulating the logical-zero bits. The first demodulator produces, locally, and in first and second channels, respectively, a first reference signal that is a replica of the logical-one bit sequence of frequencies and a second reference signal that is the replica in quadrature. The second demodulator produces, locally, and in third and fourth channels, respectively, cooresponding third and fourth reference signals for the logical-zero bit sequence. Each of the four reference signals is applied to a corresponding analog multiplier for multiplication by the input signal in each channel. The output of each multiplier is applied to a low pass filter that passes only the dc component of the product signal which in turn is squared. The resultant signals in the first and second channels are summed to provide a first output signal, and the resultant signals in the third and fourth channels are summed to provide a second output signal. Compensation circuitry cancels error voltages developed in the demodulatin channels as a result of component offset, and the two output signals are integrated over a bit period and then compared to each other to detect a logical-one or logical-zero bit.

40. 外观设计

USD306609S Point-of-sale terminal 失效
公开(公告)号：USD306609S
公开(公告)日：1990-03-13
申请号：US939877
申请日：1986-12-09
申请人： Leonardus Koppens, deceased , Han Maarschalkerweerd, executor
设计人： Leonardus Koppens, deceased , Han Maarschalkerweerd, executor

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