Surface-micromachined rotatable member having a low-contact-area hub

    公开(公告)号:US06649947B2

    公开(公告)日:2003-11-18

    申请号:US10098214

    申请日:2002-03-18

    CPC classification number: B81B5/00 B81B2201/034 Y10T74/19651

    Abstract: A surface-micromachined rotatable member formed on a substrate and a method for manufacturing thereof are disclosed. The surface-micromachined rotatable member, which can be a gear or a rotary stage, has a central hub, and an annulus connected to the central hub by an overarching bridge. The hub includes a stationary axle support attached to the substrate and surrounding an axle. The axle is retained within the axle support with an air-gap spacing therebetween of generally 0.3 &mgr;m or less. The rotatable member can be formed by alternately depositing and patterning layers of a semiconductor (e.g. polysilicon or a silicon-germanium alloy) and a sacrificial material and then removing the sacrificial material, at least in part. The present invention has applications for forming micromechanical or microelectromechanical devices requiring lower actuation forces, and providing improved reliability.

    Apparatus with a rotatable MEMS device

    公开(公告)号:US09664897B1

    公开(公告)日:2017-05-30

    申请号:US14883474

    申请日:2015-10-14

    Inventor: Arnon Hirshberg

    Abstract: Embodiments of the present disclosure are directed toward an apparatus with a rotatable MEMS device. The apparatus may include a magnetic circuit with two magnets disposed opposite each other to produce a magnetic field between the magnets. The MEMS device may be placed in a frame disposed between the magnets. The MEMS device may include a driving coil disposed around the device, and may be rotatable around a first axis of the frame, in response to application of electromagnetic force produced by interaction of electric current to pass through the driving coil, with the magnetic field. The frame may include another driving coil, and may be rotatable around a second axis orthogonal to first axis, in response to application of electromagnetic force produced by interaction of electric current to pass through the second driving coil, with the magnetic field. Other embodiments may be described and/or claimed.

    Kinetic energy atom-powered engine
    17.
    发明授权

    公开(公告)号:US09470090B2

    公开(公告)日:2016-10-18

    申请号:US14696266

    申请日:2015-04-24

    Applicant: Lee Ervin

    Inventor: Lee Ervin

    Abstract: A device for converting the kinetic energy of molecules into useful work includes an actuator configured to move within a fluid or gas due to collisions with the molecules of the fluid or gas. The actuator has dimensions that subject it to the Brownian motion of the surrounding molecules. The actuator utilizes objects having multiple surfaces where the different surfaces result in differing coefficients of restitution. The Brownian motion of surrounding molecules produce molecular impacts with the surfaces. Each surface then experiences relative differences in transferred energy from the kinetic collisions. The sum effect of the collisions produces net velocity in a desired direction. The controlled motion can be utilized in a variety of manners to perform work, such as generating electricity or transporting materials.

    MEMS rotary fuze architecture for out-of-line applications
    18.
    发明授权
    MEMS rotary fuze architecture for out-of-line applications 有权
    用于离线应用的MEMS旋转引信架构

    公开(公告)号:US09441931B1

    公开(公告)日:2016-09-13

    申请号:US14756652

    申请日:2015-09-29

    Abstract: An apparatus used in a fuze device, which includes a MEMS micro-rotor. The micro-rotor of the apparatus may move an explosive material, for example, a fuze material, from an out-of-line position to an in-line position. The micro-rotor includes an integral cavity in which the material may be safely loaded and held in the out-of-line position. At an appropriate time, the fuze device of a fully assembled ordnance may be armed. When the apparatus is activated, the micro-rotor carefully moves the explosive material to the in-line position, where the ordnance is armed.

    Abstract translation: 一种在引信装置中使用的装置,其包括MEMS微转子。 装置的微型转子可以将爆炸物质例如引信材料从脱线位置移动到直列位置。 微转子包括整体空腔,其中材料可以被安全地装载并保持在离线位置。 在适当的时候,完全组装的军械的引信装置可以装备。 当设备启动时,微型转子会将爆炸物小心地移动到装备武器的在线位置。

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