Cam-actuated thread tapper
    2.
    发明授权
    Cam-actuated thread tapper 失效
    凸轮驱动螺纹塞

    公开(公告)号:US5165828A

    公开(公告)日:1992-11-24

    申请号:US743701

    申请日:1991-08-12

    IPC分类号: G05B19/18

    摘要: An electronic thread tapper includes a cam-operated feed mechanism which drives the tap carriage rigidly in the advance direction only. Separate force means are employed to move the carriage in the retract direction when the tap is being withdrawn from the work material. Spindle and feed motors operate separately, but are cycle-coordinated during a dwell period between tapping strokes. By measuring any position error developed between the spindle and feed positions, a fault condition, such as a worn tap, a workpiece material defect, or an obstruction in the machine can be sensitively detected.

    摘要翻译: 电子螺纹塞子包括一个凸轮操作进给机构,其仅在前进方向上刚性驱动龙头托架。 当水龙头从工作材料中取出时,分离力装置用于沿收回方向移动托架。 主轴和进给电机单独运行,但在敲击行程之间的停留期间是循环协调的。 通过测量在主轴和进给位置之间产生的任何位置误差,可以敏感地检测故障状况,例如磨损的攻丝,工件材料缺陷或机器中的障碍物。

    Chewing gum
    3.
    发明授权
    Chewing gum 失效
    口香糖

    公开(公告)号:US5424081A

    公开(公告)日:1995-06-13

    申请号:US144450

    申请日:1993-11-02

    CPC分类号: A23G4/14 A23G4/068 A23G4/08

    摘要: A non-adhesive chewing gum base comprising a gluten component and a protein condensing agent which promotes cross-linking among gluten proteins forming the gluten component. Preferably the gluten is a wheat gluten and the protein condensing agent is a tannin. The base may also comprise an emulsifying agent, a plasticizing agent and whole wheat flour. Sweeteners, flavors and colors may be added to the gluten-based mixture to produce a desirable chewing gum. The gluten-based chewing gum is light in texture and will not adhere to dentures or fillings when chewed. Ingredients in the gluten-based chewing gum are all natural and will not be harmful if the gum is accidentally swallowed. The chewing gum is formed through low temperature extrusion or by freeze fragmentation processes.

    摘要翻译: 一种非粘性口香糖胶基,其包含谷蛋白成分和蛋白质缩合剂,其促进形成麸质成分的麸质蛋白质之间的交联。 优选地,面筋是小麦面筋,蛋白质缩合剂是单宁。 碱还可以包含乳化剂,增塑剂和全麦面粉。 可以将甜味剂,香料和颜色加入到面筋混合物中以产生所需的口香糖。 基于面筋的口香糖质地轻盈,咀嚼时不会粘在义齿或馅料上。 面筋嚼口香糖中的成分都是天然的,如果口香糖被意外吞咽,则不会有害。 口香糖通过低温挤出或通过冷冻碎裂过程形成。

    12-step commutation device for an electric motor
    4.
    发明授权
    12-step commutation device for an electric motor 失效
    用于电动机的12级换向装置

    公开(公告)号:US4758768A

    公开(公告)日:1988-07-19

    申请号:US100962

    申请日:1987-09-25

    IPC分类号: H02K29/08 H02P6/08 H02P6/14

    CPC分类号: H02P6/14 H02K29/08

    摘要: A 12-step commutation in a brushless DC motor is achieved by six shaft-mounted commutation sensors and circuitry which permits inexpensive shaft-angle decoding for coil excitation. The commutation signal devices are Hall sensors arranged in two sets. A first set is arranged to produce the desired switching signals every 120 electrical degrees; a second set of three Hall sensors is similarly arranged equally spaced between the electrical switch points of the first set, however, the second set of sensors is wired together through the process of EXCLUSIVE-ORing to form a single, fourth output. Thus, the six Hall sensors are configured to produce four output signals which may be inexpensively decoded using a standard 32.times.8 PROM. A further refinement includes current modulation to the field coils in order to equalize the torque output of alternate steps. In one embodiment, this is accomplished by reducing the gain of the motor's servo amplifier so that the desired current shift is achieved by changes in the motor's load impedance.