Aft rotor ducted wind turbine
    3.
    发明授权

    公开(公告)号:US10563635B2

    公开(公告)日:2020-02-18

    申请号:US15355859

    申请日:2016-11-18

    Abstract: A wind energy extraction apparatus utilizing a separate surface enclosing the turbine rotor is disclosed. An embodiment of the present invention includes a slotted and un-slotted duct of specified geometry enclosing a wind turbine rotor in such a manner as to provide acceleration of the ambient air though the rotor at a velocity above that which an open rotor exposed to the freestream would experience, thereby resulting in an increased amount of energy extraction relative to a comparable open rotor. In one aspect, the wind turbine rotor is positioned in the duct at a location downstream of the smallest cross-sectional area of the duct as this will provide the maximum power output. According to another aspect, the rotor geometry is such as to incorporate the effect of the duct on the incoming wind velocity profile.

    Wheel Spikes
    4.
    发明申请
    Wheel Spikes 审中-公开

    公开(公告)号:US20190315158A1

    公开(公告)日:2019-10-17

    申请号:US16383131

    申请日:2019-04-12

    Abstract: A traction enhancement device and system for the rear wheel(s) of a wheelchair is provided. The traction enhancement system generally includes a tooth bar assembly that includes a plurality of spikes/teeth and an actuation assembly that includes a lever and swashplate. In use the lever can be moved into ground engaging position and the swashplate will contact and provide a force the tooth bar assembly causing the spikes to extend beyond the diameter of the wheelchair wheel and into engagement with the surface on which the chair is riding. The lever can be pulled out of ground engaging position and the swashplate will not cause the spikes to push outwardly beyond the diameter of the wheel.

    SYSTEM AND METHOD FOR FIB AGGREGATION
    5.
    发明申请

    公开(公告)号:US20190280959A1

    公开(公告)日:2019-09-12

    申请号:US16294529

    申请日:2019-03-06

    Abstract: A system and method for FIB aggregation. FIB Aggregation with Quick Selections (FAQS) is a FIB aggregation algorithm that leverages compact data structures and three unique optimization techniques to quickly and incrementally select next hops when handling route updates. As a result, FAQS can run up to 2.53 and 1.75 times faster for IPv4 and IPv6, respectively, than the optimal FIB aggregation algorithm while achieving a near-optimal aggregation ratio. Meanwhile, it consumes much less memory and generates much smaller number of FIB changes when carrying out frequent updates. The performance enhancement of the new algorithm addresses many concerns from ISPs regarding performance issues, and enhances the probability to push FIB aggregation techniques further to the level of production adoption by the industry.

    Miniature electrical aerosol spectrometer

    公开(公告)号:US09970855B2

    公开(公告)日:2018-05-15

    申请号:US15295278

    申请日:2016-10-17

    CPC classification number: G01N15/0266 G01N2015/0003

    Abstract: A miniature electrical-mobility aerosol spectrometer comprising a 3D-printed body comprising: (i) a single inlet section configured to receive particles to be evaluated by the spectrometer; (ii) an electrostatic precipitator section coupled to the electrostatic precipitator section; (iii) a classifier section, wherein the electrostatic precipitator section is coupled to the classifier section; and (iv) an outlet, wherein the classifier section is coupled to the outlet; a high voltage classifier plate positioned within the classifier section; and a classifier component positioned within the classifier section opposite the high voltage classifier plate, wherein the classifier component comprises sensing circuitry configured to detect particles in the classifier section, and wherein the classifier section comprises a two-sided printed circuit board, wherein the two-sided printed circuit board comprises the sensing circuitry, and wherein a first side of the two-sided printed circuit board comprises a plurality of printed collection plates.

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