公开(公告)号：US4471651A

公开(公告)日：1984-09-18

申请号：US441019

申请日：1982-11-12

申请人： John Dimeff ,  Clyde R. Stewart

发明人： John Dimeff ,  Clyde R. Stewart

IPC分类号： B65H75/36 ,  G01M3/00 ,  G01M3/24 ,  G01M3/08

CPC分类号： B65H75/364 ,  G01M3/005 ,  G01M3/246

摘要： A duct probe having a coaxial cable is provided to advance a microphone through an underground or other duct containing a cable in a pressurized sheath for sensing fluid leaks in the sheath. The coaxial cable is embedded in a resilient fiberglass rod of one-piece construction. The rod is sufficiently flexible so that it can be wound onto and unwound from a reel having a cage-like configuration. A stationary base is provided to rotatably mount the reel, and the base is provided with a length measuring device responsive to the movement of the duct probe as it is unwound from the reel so that the distance by which the duct probe penetrates a duct can be determined. At the outer end of the rod, a microphone is mounted for sensing the sounds caused by a fluid leak in the pressurized sheath in the duct. The coaxial cable in the rod couples the microphone to a telephone jack at the reel, one part of the jack being stationary and the other part of the jack being coupled to the reel so that the reel can rotate relative to the base, yet a signal can be taken from the coaxial cable and directed to a electronic signal processor unit for showing an indication of the leak. The rod can be repaired quickly and easily by an improved technique if the rod cracks as a result of being misused.

摘要翻译： 提供具有同轴电缆的管道探针以使麦克风通过包含加压护套中的电缆的地下或其它管道，以传感护套中的流体泄漏。 同轴电缆嵌入一体式结构的弹性玻璃纤维棒。 该杆具有足够的柔性，使得其可以卷绕在具有笼状结构的卷轴上并展开。 设置固定基座以可旋转地安装卷轴，并且基座设置有长度测量装置，其响应于管道探针从卷轴展开时的运动，使得管道探针穿过管道的距离可以是 决心。 在杆的外端，安装了麦克风，用于感测由管道中的加压护套中的流体泄漏引起的声音。 杆中的同轴电缆将麦克风耦合到卷轴处的电话插孔，插座的一部分是静止的，并且插座的另一部分联接到卷轴，使得卷轴可相对于基座旋转，而信号 可以从同轴电缆取出并被引导到电子信号处理器单元以显示泄漏的指示。 如果由于被误用而导致杆裂开，则可以通过改进的技术来快速且容易地修复杆。

公开(公告)号：US3953734A

公开(公告)日：1976-04-27

申请号：US526438

申请日：1974-11-22

申请人： John Dimeff

发明人： John Dimeff

IPC分类号： G01N21/37 ,  G01N21/26

CPC分类号： G01N21/37

摘要： A non-dispersive gas analyzing apparatus is described having a first chamber for containing a first gas, the density of which it is desired to determine. A source of radiant energy is provided for passing radiant energy through the first chamber. Modulation means are provided for modulating the radiant energy passing through the first chamber by modulating the volume of the chamber at the acoustic resonance frequency of the first gas and the chamber. Signal generating means including a second chamber for containing a gas which is heated by radiant energy emerging from the first chamber and a microphonic means responsive to the resulting pressurization in the second chamber is provided for generating a signal having a frequency and amplitude corresponding to the modulation of the radiant energy in the first chamber. In one embodiment this signal is used to modulate in phase opposition radiant energy passing through an intermediate gas-filled third chamber so as to cancel in the second chamber the effects of the modulation in the first chamber. In a second embodiment this signal is used to modulate in phase opposition the intensity of the radiant energy emerging from the energy source so as to cancel in the second chamber the effects of the modulation in the first chamber. Output means are further provided responsive to the amplitude of the signal generated by the signal generating means and the amplitude of the modulation in the first chamber for providing an output proportional to the density of the gas in the first chamber.

摘要翻译： 描述了一种非分散性气体分析装置，其具有用于容纳第一气体的第一室，其密度需要确定。 提供辐射能源，用于将辐射能通过第一腔室。 提供调制装置，用于通过在第一气体和室的声共振频率下调制室的体积来调制通过第一室的辐射能。 信号产生装置包括用于容纳由第一室产生的辐射能加热的气体的第二室和响应于在第二室中产生的加压的麦克风装置，用于产生具有对应于调制的频率和振幅的信号 的第一个室内的辐射能。 在一个实施例中，该信号用于调制通过中间充满气体的第三室的相对相对辐射能，以便在第二室中消除第一室中调制的影响。 在第二实施例中，该信号用于相位地调制从能量源产生的辐射能的强度，从而在第二室中抵消第一室中调制的影响。 响应于信号发生装置产生的信号的幅度和第一室中的调制幅度进一步提供输出装置，以提供与第一室中的气体的密度成比例的输出。

公开(公告)号：US3022672A

公开(公告)日：1962-02-27

申请号：US73480558

申请日：1958-05-12

申请人： JOHN DIMEFF ,  GARDNER MURRAY S

发明人： JOHN DIMEFF ,  GARDNER MURRAY S

IPC分类号： G01L9/00

CPC分类号： G01L9/006

公开(公告)号：US6164142A

公开(公告)日：2000-12-26

申请号：US183722

申请日：1998-10-30

申请人： John Dimeff

发明人： John Dimeff

IPC分类号： G01F1/42

CPC分类号： G01F1/42

摘要： An air flow measurement device includes a connector conduit for the air flow having a transverse restrictor plate located therein with a plurality of uniform and uniformly spaced apertures extending therethrough. The restrictor plate is maintained in the connector conduit by a pair of sleeves each of which includes on its interior diameter a plurality of angularly spaced passages and on its outer diameter a circumferential groove communicating with the passages. A pair of valves are mounted through the wall of the connector conduit for communication with the circumferential grooves so that a differential pressure meter may be connected to the valves to measure the difference in pressure upstream and downstream of the restrictor plate to thereby determine the flow rate. The sleeves may be made in two identical pieces to form the passages and grooves, and additional smoothing screens may be positioned upstream and downstream of the restrictor plate by further identical sleeve pieces.

摘要翻译： 气流测量装置包括用于空气流的连接器导管，其具有位于其中的横向限制器板，其具有延伸穿过其中的多个均匀且均匀间隔开的孔。 限流板通过一对套筒保持在连接器管道中，每个套筒在其内径上包括多个成角度间隔的通道，并且在其外径上包括与通道连通的周向槽。 一对阀通过连接器导管的壁安装以与周向沟槽连通，使得差压计可连接到阀门上，以测量限流板上游和下游的压力差，从而确定流量 。 套筒可以制成两个相同的部件以形成通道和槽，并且另外的平滑筛可以通过进一步相同的套筒件定位在限流板的上游和下游。

公开(公告)号：US4303919A

公开(公告)日：1981-12-01

申请号：US966017

申请日：1978-12-04

申请人： John Dimeff

发明人： John Dimeff

IPC分类号： A61C19/045 ,  G01D5/241 ,  G08C19/10 ,  A61C19/04

CPC分类号： A61C19/045 ,  G01D5/2412

摘要： Multi-component motions between two parts are sensed by this apparatus which comprises a first conductive element and a plurality of second conductive elements with a frame connected to the first and second elements to hold them closely spaced from each other but not in electrical contact. An electric oscillator is connected between the first element and the second elements to apply an oscillating signal between the first element and each of the second elements. A sensing circuit is connected to each of the second elements to separately detect changes in the protential between the first element and each of the second elements as the two parts are moved relative to each other and to produce a first set of separate electrical signals representative of such changes in the potential. These signals are then algebraicly combined in a plurality of predetermined combinations to thereby generate a second set of electrical signals which are each representative of the separate linear and rotative orthogonal components of the relative motion between the two parts.

摘要翻译： 该装置检测两部分之间的多分量运动，该装置包括第一导电元件和多个第二导电元件，其中框架连接到第一和第二元件以将它们彼此紧密地间隔开而不与电接触。 电振荡器连接在第一元件和第二元件之间，以在第一元件和第二元件之间施加振荡信号。 感测电路连接到每个第二元件，以分开地检测第一元件与每个第二元件之间的保护的变化，因为两个部件相对于彼此移动并且产生代表第一元件的第一组单独的电信号 这种变化的潜力。 这些信号然后以多个预定组合进行代数组合，从而产生第二组电信号，每组代表两部分之间的相对运动的分开的线性和旋转正交分量。

公开(公告)号：US4204326A

公开(公告)日：1980-05-27

申请号：US965749

申请日：1978-12-04

申请人： John Dimeff

发明人： John Dimeff

IPC分类号： A61C11/00 ,  A61C19/045 ,  A61C9/00

CPC分类号： A61C19/045 ,  A61C11/00

摘要： A pair of spaced apart grooves are machined in a plate in correspondence with the movement of a patient's left and right condyles relative to the sockets in which they move. A third groove is also machined in the same plate, equally spaced and remote from the pair of grooves, in correspondence with the minimal separation of the patient's mandibular and maxillary teeth at various lateral and anterior positions. The plate is then attached to a cast of the patient's maxillary teeth and is mounted in an articulator frame on rigid posts which slide in the machined grooves of the plate as the plate is manually moved, thereby reproducing movements corresponding to the patient's closure pathway and condylar topography.

摘要翻译： 一对间隔开的凹槽相对于患者左右髁相对于它们移动的插座的移动而在板中加工。 第三凹槽也被加工在相同的板上，等距并且远离一对凹槽，与在不同的横向和前部位置处患者的下颌骨和上颌牙的最小间隔相对应。 然后将板连接到患者上颌齿的铸件上，并且安装在刚性柱上的咬合器框架中，当手动移动板时，在板的加工凹槽中滑动，从而再现对应于患者的闭合通路和髁的运动 地形。

公开(公告)号：US3943368A

公开(公告)日：1976-03-09

申请号：US514546

申请日：1974-10-15

申请人： John Dimeff

发明人： John Dimeff

IPC分类号： G01N21/35 ,  G01N21/26

CPC分类号： G01N21/3504

摘要： A method and apparatus is described for compensating for reflection losses in an optical path length modulated absorption-absorption gas analyzer used for determining the density of a reference gas in an unknown gas sample. The apparatus comprises a first chamber for containing a first gas including a reference gas at a known partial density and a second chamber for containing a second gas including a sample of the reference gas at an unknown partial density. A source of radiant energy is provided for passing radiant energy through the first and second chambers. Means are provided for modulating the path length of the radiant energy in the chambers. Additionally, a chopper wheel comprising a plurality of gas cells containing a sample of the reference gas is interspersed by a plurality of gas cells containing a gas excluding the reference gas. The chopper wheel is provided between the first and the second chambers and a radiant energy sensing means for intercepting the radiant energy emerging from the first and second chambers before it reaches the radiant energy sensing means. Signal processing means responsive to the radiant energy sensing means and the position of the chopper cells with respect to the radiant energy path provides a signal proportional to the density of the reference gas in the unknown gas sample.

摘要翻译： 描述了用于补偿用于确定未知气体样品中参考气体的密度的光路长度调制吸收 - 吸收气体分析仪中的反射损耗的方法和装置。 该装置包括用于容纳包括已知部分密度的参考气体的第一气体的第一室和用于容纳包含未知部分密度的参考气体样品的第二气体的第二室。 提供辐射能源，用于使辐射能通过第一和第二腔室。 提供了用于调制腔室中的辐射能的路径长度的装置。 此外，包括多个含有参考气体的样品的气室的斩波轮被包含除了参考气体之外的气体的多个气体细胞散布。 斩波轮设置在第一和第二室之间，以及辐射能量感测装置，用于在到达辐射能量感测装置之前拦截从第一和第二腔排出的辐射能。 响应于辐射能量感测装置的信号处理装置和斩波单元相对于辐射能量路径的位置提供与未知气体样本中参考气体的密度成比例的信号。

公开(公告)号：US3938956A

公开(公告)日：1976-02-17

申请号：US484209

申请日：1974-06-28

申请人： John Dimeff

发明人： John Dimeff

IPC分类号： G01N27/62 ,  G01N33/00

CPC分类号： G01N27/626

摘要： In a hydrogen flame detector there is provided a means for modulating the density of a gas stream prior to its introduction into the detector flame. A detector, responsive to the resulting modulation of the flame, is provided for producing an output signal having a component fluctuating at the frequency of modulation. A cross-correlator, responsive to the output signal and a signal at the frequency of modulation, is provided for producing a resultant signal proportional to the cross-correlation between its two input signals. A means is further provided for recording or otherwise utilizing the resultant signal thus produced.

摘要翻译： 在氢火焰检测器中，提供了一种用于在将气流引入检测器火焰之前调节气流的密度的装置。 提供响应于所产生的火焰调制的检测器，用于产生具有以调制频率波动的分量的输出信号。 提供响应于输出信号和调制频率的信号的交叉相关器，用于产生与其两个输入信号之间的互相关成比例的合成信号。 还提供了一种用于记录或以其他方式利用由此产生的结果信号的装置。

公开(公告)号：US5337617A

公开(公告)日：1994-08-16

申请号：US44021

申请日：1993-04-08

申请人： John Dimeff

发明人： John Dimeff

IPC分类号： G01F1/22 ,  G01F1/24

CPC分类号： G01F1/24 ,  G01F1/22

摘要： A gas flow meter includes a cylinder closed at its upper end and slidably supported within a bearing ring. The cylinder side wall is provided with openings. A gas flow is directed into the interior of the cylinder which causes it to rise with respect to the bearing ring and permitting the gas to flow out of the area of the openings exposed above the bearing. During a constant flow of gas through the cylinder the flow rate can be measured by the distance which the cylinder has moved upwardly as indicated on a fixed marker positioned adjacent to the cylinder. An electrical signal is also provided by means of an electrical sensor positioned axially within the cylinder.

摘要翻译： 气体流量计包括在其上端封闭并可滑动地支撑在轴承环内的气缸。 气缸侧壁设有开口。 气流被引导到气缸的内部，导致其相对于轴承环升高，并允许气体流出暴露在轴承上方的开口的区域。 在气体通过气缸的恒定流动期间，流量可以通过气缸向上移动的距离来测量，如在邻近气缸定位的固定标记上所指示的。 还通过轴向位于气缸内的电传感器来提供电信号。

公开(公告)号：US4583406A

公开(公告)日：1986-04-22

申请号：US615194

申请日：1984-05-30

申请人： John Dimeff

发明人： John Dimeff

IPC分类号： G01N29/00 ,  G01N29/22 ,  G01N29/34 ,  G01N29/36 ,  G01S7/534 ,  G01N29/04

CPC分类号： G01N29/343 ,  G01N29/00 ,  G01N29/22 ,  G01N29/36 ,  G01S7/534

摘要： Apparatus for processing a composite noise signal containing sonic and ultrasonic components generally in a frequency range of about 20 Hz-100 KHz to make audible both components of the signal includes a heterodyne circuit operable in response to a rectangular wave local oscillator signal to produce output signals which are within the frequency range of human hearing.

摘要翻译： 用于处理包含声音和超声波分量的复合噪声信号的装置通常在约20Hz-100KHz的频率范围内，以使得该信号的两个分量的可听见的包括可以响应于矩形波本地振荡器信号而产生输出信号的外差电路 这在人类听觉的频率范围内。