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21 条记录 (耗时 0.051 秒)

    Two-point sight for archery bow
    5.
    发明授权
    Two-point sight for archery bow 失效
    射箭弓的两点瞄准

    公开(公告)号：US5920996A

    公开(公告)日：1999-07-13

    申请号：US888639

    申请日：1997-07-07

    申请人： John F. Hurckman ,  David L. Porter

    发明人： John F. Hurckman ,  David L. Porter

    IPC分类号： F41G1/467

    CPC分类号： F41G1/467

    摘要： The above objects and advantages are provided for in improved archery bow sight assembly which provides a floating two-pin sight system for sighting a target. According to the invention, a sight assembly body having a forward portion and rear portion is attached directly to the bow. Pivotally attached to the front portion is a floating sight pin. Pivotally attached to the rear portion is a floating peep sight. Movement of the sight pin and peep sight is caused by a sight adjustment lever. Gear teeth on the sight adjustment lever are meshingly engaged with gear teeth on the peep sight arm. The gear teeth of the adjustment lever are indirectly engaged with the sight pin arm via idler gears. This arrangement allows the peep sight and sight pin to move in the same direction as the sight adjustment lever is manipulated. In use, the user views a target through the peep sight and, while maintaining visual contact with the target through the peep sight, intersects the peep sight with the sight pin by manipulation of the sight adjustment lever. Distance indicia located on the back outer wall of the rear portion identify the distance to the target when indicia are aligned with a peep sight.

    摘要翻译： 上述目的和优点在改进的射箭弓瞄准器组件中提供，其提供用于瞄准目标的浮动双针瞄准器系统。 根据本发明，具有前部和后部的瞄准器组件主体直接附接到弓形。 垂直于前部安装的是浮动瞄准销。 枢轴连接到后部是浮动的窥视。 瞄准镜和窥视镜的移动是由视力调节杆引起的。 视力调节杆上的齿轮与窥视瞄准臂上的齿轮啮合啮合。 调节杆的齿轮齿通过空转齿轮与瞄准臂臂间接接合。 这种布置允许窥视瞄准器和瞄准器沿与操纵视线调节杆相同的方向移动。 在使用中，用户通过窥视瞄准器观察目标，并且在通过窥视视野保持与目标的视觉接触的同时，通过操纵视力调节杆将窥视视线与瞄准器相交。 位于后部的后外壁上的距离标记在标记与窥视视野对准时识别与目标的距离。

    Printed circuit switch for windshield wiper motor
    6.
    发明授权
    Printed circuit switch for windshield wiper motor 失效
    风雨刮水器电机印刷电路开关

    公开(公告)号：US4609794A

    公开(公告)日：1986-09-02

    申请号：US771100

    申请日：1985-08-30

    申请人： David L. Porter

    发明人： David L. Porter

    IPC分类号： H01H19/58 ,  H01H19/62 ,  H01H3/42 ,  H01H19/20

    CPC分类号： H01H19/585 ,  H01H19/62

    摘要： A switch includes three blade contact terminals against which is biased a rotating printed circuit board. The printed circuit board is rotationally moveable with respect to the blade contacts and has conductive elements on a first side of the printed circuit board for selectively contacting the switching contacts in response to the relative rotation between the switching contacts and the printed circuit board. The conductor elements include a tab for extending around the edge of the printed circuit board to a second side of the printed circuit board so as to provide electrically connected regions on both first and second sides of the printed circuit board. An electrically conducting resilient contact abuts the second side of the printed circuit board and biases the printed circuit board against the switching contacts. The tab and resilient contact can be coupled to a ground potential.

    摘要翻译： 开关包括三个叶片接触端子，偏置旋转印刷电路板。 印刷电路板可相对于刀片触点旋转移动，并且在印刷电路板的第一侧具有导电元件，用于响应于开关触点和印刷电路板之间的相对旋转选择性地接触开关触点。 导体元件包括用于将印刷电路板的边缘延伸到印刷电路板的第二侧的突片，以便在印刷电路板的第一和第二侧上提供电连接的区域。 导电弹性接触件邻接印刷电路板的第二侧并将印刷电路板偏置在开关触点上。 接头和弹性触点可以耦合到地电位。

    LOW PRESSURE FUEL INJECTOR
    7.
    发明申请
    LOW PRESSURE FUEL INJECTOR 审中-公开
    低压燃油喷射器

    公开(公告)号：US20090090794A1

    公开(公告)日：2009-04-09

    申请号：US11867393

    申请日：2007-10-04

    申请人： David Ling-Shun Hung ,  Vivek A. Jairazbhoy ,  David L. Porter

    发明人： David Ling-Shun Hung ,  Vivek A. Jairazbhoy ,  David L. Porter

    IPC分类号： F02M69/04

    CPC分类号： F02M61/1853 ,  F02M61/18 ,  F02M61/1806 ,  F02M61/188

    摘要： A low pressure fuel injector capable of atomizing fuel at relatively low pressure is configured to have reduced hydraulic resistance. Reduction in the hydraulic resistance minimizes the pressure drop within the fuel injector and thereby improves atomization of the fuel for improved fuel economy and performance, and decreased emissions.

    摘要翻译： 能够在相当低的压力下雾化燃料的低压燃料喷射器被配置为具有降低的液压阻力。 降低液压阻力使燃料喷射器内的压降最小化，从而改善燃料雾化，提高燃油经济性和性能，减少排放。

    Vehicular speed control system with reduced gear chatter
    9.
    发明授权
    Vehicular speed control system with reduced gear chatter 失效
    车速调节系统减少齿轮颤动

    公开(公告)号：US5056613A

    公开(公告)日：1991-10-15

    申请号：US558918

    申请日：1990-07-27

    申请人： David L. Porter ,  Charles F. Weber ,  Kah S. Oo

    发明人： David L. Porter ,  Charles F. Weber ,  Kah S. Oo

    IPC分类号： B60K31/04 ,  F16H55/18

    CPC分类号： F16H55/18 ,  B60K31/047 ,  Y10T74/19898

    摘要： A vehicle speed control system having phasing circuitry which provides a sequence of electrical phase steps in response to a comparison of actual vehicle speed to a desired vehicle speed. A stepper motor coupled to a pinion shaft rotates by discrete phase steps in response to the phasing circuitry. An anti-backlash/transfer gear assembly includes a first sprocket gear coupled to a second sprocket gear by integrally formed compression or flexure members which hold the sprocket gears together and a spring assembly which displaces the circumferential teeth of the two sprocket gears relative to one another. Another gear assembly couples rotational movement from the stepper motor to the engine throttle.

    摘要翻译： 一种车辆速度控制系统，具有定相电路，其响应于实际车辆速度与期望车辆速度的比较来提供一系列电相步骤。 耦合到小齿轮轴的步进电机响应于定相电路以离散相位步进旋转。 反间隙/传递齿轮组件包括通过将链轮齿轮固定在一起的整体形成的压缩或弯曲构件而联接到第二链轮齿轮的第一链轮齿轮;以及弹簧组件，其相对于彼此移动两个链轮齿轮的周向齿 。 另一个齿轮组件将来自步进马达的旋转运动耦合到发动机节气门。

    Fuel pump having pulsating chambers
    10.
    发明授权
    Fuel pump having pulsating chambers 失效
    燃油泵具有脉动室

    公开(公告)号：US3972656A

    公开(公告)日：1976-08-03

    申请号：US533180

    申请日：1974-12-16

    申请人： David L. Porter

    发明人： David L. Porter

    IPC分类号： F02M37/06 ,  F02M37/04 ,  F04B11/00 ,  F04B43/02

    CPC分类号： F02M37/046 ,  F04B11/0033 ,  F04B43/02

    摘要： A reciprocating fuel pump for an internal combustion engine comprising a body having an outer wall defining a pumping chamber and a pair of generally cylindrical projections in fluid communication with the pumping chamber, the projections defining an intake cavity with an intake check valve therein and a discharge cavity with a discharge check valve therein. Elastomeric tubular conduits within the projections form the intake and discharge cavities and are of a flexibility sufficient to provide a collapsing and an expansion of the conduit walls upon relatively small pressure variations resulting from the suction and discharge strokes of the diaphragm. The elastomeric conduits thereby provide pulsating chambers to smooth out the flow of fuel and thereby increase the fuel flow through the fuel pump.

    摘要翻译： 一种用于内燃机的往复式燃料泵，其包括具有限定泵送室的外壁和与泵送室流体连通的一对大致圆柱形突起的本体，所述突出部限定具有进气止回阀的进气腔和排气口 其中具有排放止回阀的腔。 突起内的弹性管状导管形成进气和排出腔，并且具有足够的灵活性，以便在由隔膜的吸入和排出冲程产生的相对较小的压力变化上提供导管壁的塌缩和膨胀。 弹性管道由此提供脉动室以平滑燃料流，从而增加通过燃料泵的燃料流。