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    Rotor magnet driven optical shutter assembly
    4.
    发明申请
    Rotor magnet driven optical shutter assembly 审中-公开
    转子磁铁驱动光学快门组件

    公开(公告)号：US20070172231A1

    公开(公告)日：2007-07-26

    申请号：US11340044

    申请日：2006-01-26

    Applicant: David Durfee

    Inventor： David Durfee

    IPC: G03B9/08

    CPC classification number: G03B9/10 ,  G03B9/22 ,  G03B9/24

    Abstract: A rotor magnet driven optical shutter assembly with a permanent magnet rotor directly connected to and driving the rotation of an optical shutter blade, to alternately block or allow transmission of light through the shutter aperture. The rotor is cylindrical with optional center hole, is magnetized across its diameter, and rotates around a pivot bearing coaxial with its center axis. A stator is arranged around the rotor and is shaped so that, as the rotor rotates over its range of travel, the flux through the electromagnet drive coil core varies in magnitude and direction. A drive current through the electromagnet drive coil thus induces a torque to the rotor, to open or close the shutter blade. By driving the electromagnet drive coil with a controlled current waveform, the shutter aperture may be opened or closed (either quickly or slowly), held open/closed, or moved to any intermediate position, as desired.

    Abstract translation: 具有直接连接到光学快门叶片的旋转并驱动光学快门叶片的旋转的永磁体转子的转子磁体驱动的光学快门组件，以交替地阻挡或允许光通过快门光圈的透射。 转子是圆柱形的，具有可选的中心孔，在其直径上被磁化，并且围绕与其中心轴线同轴的枢转轴承旋转。 定子围绕转子设置，并且成形为使得当转子在其行程范围内旋转时，通过电磁体驱动线圈芯的磁通量在大小和方向上变化。 因此，通过电磁驱动线圈的驱动电流引起转子的转矩，以打开或关闭快门叶片。 通过以受控的电流波形驱动电磁驱动线圈，可根据需要打开或关闭（快速或缓慢）快门孔，保持打开/关闭或移动到任何中间位置。

    Precision positioning and fastening system
    5.
    发明申请
    Precision positioning and fastening system 有权
    精密定位和紧固系统

    公开(公告)号：US20070025826A1

    公开(公告)日：2007-02-01

    申请号：US11214347

    申请日：2005-08-29

    Applicant: David Durfee

    Inventor： David Durfee

    IPC: F16B21/18

    CPC classification number: F16B5/0208 ,  F16B5/025 ,  F16B21/18 ,  F16B37/14 ,  F16B37/145 ,  F16B39/08 ,  Y10S269/902 ,  Y10T403/1624 ,  Y10T403/7015

    Abstract: A locator/fastener has a first outer member with a precision-machined external body portion, a retention head protruding from a first end, and a multi-diameter throughbore. A fastener, which may take the form of a cap screw, floats in the throughbore of the locator with the threaded portion protruding from a second end of the locator. A receiver has an internal precision-machined surface which contacts the precision-machined body portion of the locator and a threaded bore which receives the protruding fastener. By separating the locating and fastening functions, a quick connect disconnect device is created which does not bind or gall. A hangar system allows a sub-base plate to be attached to a base using the locator-fastener disclosed herein.

    Abstract translation: 定位器/紧固件具有第一外部构件，其具有精密加工的外部主体部分，从第一端突出的保持头和多直径通孔。 可以采取帽形螺钉形式的紧固件浮动在定位器的通孔中，螺纹部分从定位器的第二端突出。 接收器具有接触定位器的精密加工主体部分的内部精密加工表面和接收突出紧固件的螺纹孔。 通过分离定位和紧固功能，创建一个快速连接断开装置，其不会结合或弯曲。 机库系统允许使用本文公开的定位器紧固件将底座板附接到基座。

    Vise jaw accessory system for attaching and releasing vise accessories while maintaining positional accuracy of the accessories
    6.
    发明授权
    Vise jaw accessory system for attaching and releasing vise accessories while maintaining positional accuracy of the accessories 失效
    虎钳配件系统，用于安装和释放虎钳配件，同时保持配件的位置精度

    公开(公告)号：US5065990A

    公开(公告)日：1991-11-19

    申请号：US636250

    申请日：1990-12-31

    Applicant: David Durfee

    Inventor： David Durfee

    IPC: B25B1/24

    CPC classification number: B25B1/24 ,  B25B1/2452 ,  B25B1/2463

    Abstract: A vise jaw system for a vise having a keyway that defines a horizontal datum surface and a vertical datum surface includes at least one removable jaw for selective attachment to the vise, the removable jaw having a bottom surface held in fixed relation to the horizontal datum surface and a front surface perpendicular to the horizontal datum surface. The removable jaw also includes a recess formed in at least the bottom surface of the removable jaw. At least one positioning plate is selectively attached to the removable jaw, the positioning plate having a bottom face contacting the horizontal datum surface and a rear face perpendicular to the horizontal datum surface. The positioning plate further includes a cleat fixed to the positioning plate adjacent to the bottom face of the positioning plate, the cleat having a shape sized for reception in the recess. Pressure devices are located in one of the removable jaw and the cleat for engaging the cleat when received in the recess to urge the bottom face of the positioning plate against the horizontal datum surface. In one embodiment of the invention, the recess has a lateral length less than the lateral length of the bottom surface of the removable jaw, such that the cleat of the positioning plate enters the recess in a longitudinal direction. The system has a lateral alignment mechanism for laterally aligning the positioning plate relative to the vertical datum surface upon longitudinal insertion of the cleat within the recess.

    Abstract translation: 用于台钳的虎钳钳口系统具有限定水平基准表面和垂直基准面的键槽，包括至少一个可选择性地连接到虎钳的可拆卸钳口，所述可移除钳口具有与水平基准面固定的底表面 以及垂直于水平基准面的前表面。 可移除的钳口还包括形成在可移除钳口的至少底表面中的凹部。 至少一个定位板选择性地附接到可移除的夹爪，定位板具有接触水平基准表面的底面和垂直于水平基准面的后表面。 所述定位板还包括固定到所述定位板的固定板，所述定位板邻近所述定位板的底面，所述防滑板具有尺寸适于在所述凹部中接纳的形状。 压力装置位于可移除的夹爪和防滑板中的一个中，用于在容纳在凹槽中时接合防滑板，以将定位板的底面抵靠水平基准面推动。 在本发明的一个实施例中，凹部的横向长度小于可移除的夹爪的底面的横向长度，使得定位板的防滑板在纵向方向上进入凹部。 该系统具有横向对准机构，用于在防滑板在凹槽内纵向插入时相对于垂直基准面侧向对准定位板。

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