Temperature control of a heated probe
    1.
    发明授权
    Temperature control of a heated probe 失效
    加热探头的温度控制

    公开(公告)号:US5043560A

    公开(公告)日:1991-08-27

    申请号:US415171

    申请日:1989-09-29

    Abstract: A method and apparatus for precisely controlling the temperature of a heated tip are disclosed. The temperature of a thermocouple within the tip is sensed at a selected rate. The sensed temperature is compared with a preselected temperature set by a user. The power provided to heat the tip is varied to cause the tip to achieve the selected temperature. If an AC power source is used, the temperature sensed at each zero crossing of the power source and the amount of power provided within that cycle is based on the temperaature of the tip sensed within the same cycle. The duration of time that heat is applied to the probe within the cycle is varied to achieve the desired temperature. If a DC power source is used, the temperature of the tip is sensed at selected intervals. The sensed temperature controls the amount of power provided to heat the tip. The exact temperature of the tip is thus advantageously controlled to provide the desired heating.

    Abstract translation: 公开了一种用于精确控制加热尖端的温度的方法和装置。 以选定的速率感测尖端内的热电偶的温度。 将感测到的温度与用户设置的预选温度进行比较。 提供用于加热尖端的功率是变化的,以使尖端达到所选择的温度。 如果使用AC电源,则在电源的每个过零点检测到的温度和在该周期内提供的功率量基于在同一周期内感测到的尖端的温度。 在循环内施加热量的探针的持续时间被改变以达到所需的温度。 如果使用直流电源,则以选定的间隔感测尖端的温度。 感测的温度控制提供用于加热尖端的功率的量。 因此有利地控制尖端的精确温度以提供所需的加热。

    Bidirectional reset integrator converter
    2.
    发明授权
    Bidirectional reset integrator converter 失效
    双向复位积分器转换器

    公开(公告)号:US3989961A

    公开(公告)日:1976-11-02

    申请号:US587157

    申请日:1975-06-16

    CPC classification number: H03K7/06

    Abstract: A bi-directional reset integrator converter, including a common reset pulse generator operable by input currents of either direction, is disclosed. The reset pulse generator creates a current flow through common components in either direction, the direction depending upon the direction of the input current. Upon receipt of a reset pulse request from the integrator of the converter, the common current flow path is connected to the integrating capacitor of the converter and dumps (or withdraws) a Q = I .sup.. .DELTA.T charge that reduces the magnitude of the capacitors stored voltage. Low asymmetry and good linearity result from the use of common components in the current flow path that provides the capacitor voltage reducing charge. In addition, good scale factor stability is provided by a temperature compensating bridge circuit.

    Abstract translation: 公开了一种双向复位积分器转换器,其包括可由任一方向的输入电流操作的公共复位脉冲发生器。 复位脉冲发生器在任一方向上产生通过公共部件的电流,该方向取决于输入电流的方向。 在从转换器的积分器接收到复位脉冲请求时,公共电流流路连接到转换器的积分电容器并转储(或退出)Q = I。 DELTA T充电可以减小电容器存储电压的大小。 通过使用提供电容器电压降低电荷的电流流路中的共同部件,导致低不对称性和良好的线性度。 另外,通过温度补偿桥式电路提供良好的比例因子稳定性。

    Vacuum actuated solder sucker
    3.
    发明授权
    Vacuum actuated solder sucker 失效
    真空驱动吸锡器

    公开(公告)号:US5377895A

    公开(公告)日:1995-01-03

    申请号:US207557

    申请日:1994-03-08

    CPC classification number: B23K3/08 Y10S137/907

    Abstract: A vacuum actuated solder sucker device having a body chamber in which a vacuum is created by a vacuum source attached thereto and a cover chamber separated from the body chamber by a piston. The piston drives a primary air valve which controls the passage of air through a passageway between the body chamber and a nozzle. In a first position the primary air valve permits the application of the vacuum to the nozzle portion, and in a second position the primary air valve permits the vacuum to be reestablished within the body chamber. The primary air valve is actuated by pressure differential across the piston which is controlled by a user who covers or uncovers a bleed hole. Air pressure equalizes between the body and cover chambers through a bleed tube through the piston. The nominal pressure of the cover chamber portion in one embodiment is controlled by an adjustable bleed valve which can restrict the maximum flow of air through the bleed hole.

    Abstract translation: 一种具有主体室的真空致动吸锡装置,其中通过附接到其上的真空源产生真空,以及通过活塞与主体室分离的盖室。 活塞驱动主空气阀,其控制空气通过主体室和喷嘴之间的通道。 在第一位置,主空气阀允许将真空施加到喷嘴部分,并且在第二位置中,一次空气阀允许真空在体腔内重新建立。 一次空气阀通过活塞的压力差来驱动,该压差由覆盖或泄露泄放孔的使用者控制。 空气压力通过穿过活塞的放气管在体和盖室之间平衡。 在一个实施例中,盖室部分的公称压力由可调节的排放阀控制,该排放阀可以限制空气通过排放孔的最大流量。

    Overhead television
    4.
    发明授权
    Overhead television 失效
    架空电视

    公开(公告)号:US5173781A

    公开(公告)日:1992-12-22

    申请号:US655673

    申请日:1991-02-14

    CPC classification number: G02B17/023 A47B23/007 H04N9/3141

    Abstract: A bedside television designed to permit a patient, or the like, to view the television while comfortably lying in bed without bending his neck. The bedside television device includes a television mounted substantially above the head of the patient and having a screen on which an image is displayed, the screen facing substantially upwardly, a pair of orthogonally disposed mirrors for reflecting the image displayed on the screen so as to create a virtual image of the image at a position above and forward of the patient at a distance that is further from the patient than the screen, and a mounting mechanism for mounting the television and the mirrors to a wall. The television and the mirrors are pivotally disposed in the mounting mechanism so as to be rotatable from a closed, non-viewing position to an open, viewing position. The mounting mechanism includes a support bracket secured to the wall and extending outwardly therefrom, a cradle pivotally secured to the bracket and supporting the television in such a manner that the television is pivotal from the viewing position to the non-viewing position by rotating the cradle, and a cabinet pivotally secured to the cradle and having the mirrors disposed on inside, orthogonal surfaces thereof such that the mirrors are rotatable from the viewing position to the non-viewing position by rotating the cabinet.

    Abstract translation: 设计用于允许病人等观看电视的床头电视,同时舒适地躺在床上而不弯曲他的脖子。 床边电视设备包括基本上位于患者头部的电视机,并且具有显示图像的屏幕,屏幕大致向上,一对正交设置的反射镜,用于反映屏幕上显示的图像,以便产生 在病人的距离比病人更远的距离位于患者的上方和前方的图像的虚拟图像,以及用于将电视机和镜子安装到墙壁上的安装机构。 电视机和镜子可枢转地设置在安装机构中,从而可以从闭合的非观看位置旋转到打开的观看位置。 安装机构包括固定在壁上并从其向外延伸的支撑支架,托架枢转地固定到托架并以这样一种方式支撑电视机,使得电视机通过旋转支架而从观看位置枢转到非观看位置 以及枢转地固定到托架上并且具有设置在其内侧的正交表面的反射镜的柜体,使得通过旋转机壳,反射镜可以从观看位置旋转到非观看位置。

    Method and apparatus for apical detection with complex impedance
measurement
    5.
    发明授权
    Method and apparatus for apical detection with complex impedance measurement 失效
    用于复阻抗测量的顶端检测方法和装置

    公开(公告)号:US5759159A

    公开(公告)日:1998-06-02

    申请号:US719333

    申请日:1996-09-25

    CPC classification number: A61B5/0534 A61C19/041 A61B5/7257 A61C19/042

    Abstract: An apical position detector for use in dental endodontics includes an electronic controller coupled to a conductive probe and a lip electrode. The probe is positioned in a root canal and the lip electrode contacts another location on the patient's body. The controller produces a test signal as a combination of signals at selected frequencies. The controller then monitors a voltage of the probe and extracts the amplitude and phase of each of the frequency components of the voltage at the probe. Test scores are generated from summations of the amplitudes and/or phases of the various frequency components to determine when the impedance between the probe and the lip electrode changes from a primarily reactive impedance to a primarily resistive impedance. A first test score is displayed to indicate when the impedance changes from a reactive to a resistive impedance. The second test score indicates when the measurement conditions are unsatisfactory. The test scores are displayed in bar graph or similar form.

    Abstract translation: 用于牙科牙科用的顶端位置检测器包括耦合到导电探针和唇电极的电子控制器。 探针定位在根管中,并且唇部电极接触患者身体上的另一个位置。 控制器产生一个测试信号作为选定频率信号的组合。 然后,控制器监测探头的电压,并提取探针上电压的每个频率分量的振幅和相位。 测试分数是通过各种频率分量的振幅和/或相位的相加产生的,以确定探针和唇形电极之间的阻抗何时从主要的无功阻抗变化到主要的电阻阻抗。 显示第一个测试分数,以指示阻抗何时从无功电阻变化到电阻阻抗。 第二个测试分数表示测量条件何时不令人满意。 测试成绩以条形图或类似形式显示。

    Heating probe having a heated tip forming a thermocouple
    6.
    发明授权
    Heating probe having a heated tip forming a thermocouple 失效
    加热探针具有形成热电偶的加热尖端

    公开(公告)号:US5406053A

    公开(公告)日:1995-04-11

    申请号:US99059

    申请日:1993-07-29

    CPC classification number: B23K3/033 B23K3/0315 H05B3/42

    Abstract: A heated probe and sensor tip incorporating a thermocouple located near the distal end of the probe. Improved temperature monitoring and control are achieved through placement of a thermocouple at or near the heating surface. In one embodiment of the device, the heating tip surface forms one half of a thermocouple junction. In another embodiment, a spiral resistive ribbon is formed integrally with the tip and comprises a resistive heating element. In an alternative embodiment of the device, a replaceable tip is described. A method for producing the device is also described. The thermocouple is preferably formed by the junction between the heating tip and a heating wire that surrounds the tip. The tip is preferably mounted in an insulative body which is, in turn, mounted at the distal end of a conductive support tube. Power is then delivered to the heating wire through the support tube and a lead connected to the heating tip. The electrically conducted support tube and a proximal portion of the heating tip are preferably enclosed by an outer tube having an end wall that contacts the heating tip so that the distal end of the heating tip projects beyond the end wall.

    Abstract translation: 一个加热的探针和传感器尖端,结合了位于探头远端附近的热电偶。 通过在加热表面处或附近放置热电偶来实现改进的温度监测和控制。 在装置的一个实施例中,加热尖端表面形成热电偶结的一半。 在另一个实施例中,螺旋形电阻带与尖端一体地形成并且包括电阻加热元件。 在该装置的替代实施例中,描述了可替换的尖端。 还描述了用于制造该装置的方法。 热电偶优选地由加热尖端和围绕尖端的加热丝线之间的接合部形成。 尖端优选地安装在绝缘体中,绝缘体又安装在导电支撑管的远端。 然后,电力通过支撑管和连接到加热尖端的引线传送到加热丝。 导电支撑管和加热尖端的近端部分优选地由具有与加热尖端接触的端壁的外管封闭,使得加热尖端的远端突出超过端壁。

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