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1017 条记录 (耗时 0.033 秒)

    Devices for and methods of forming segregated layers from mixtures of granular materials
    51.
    发明授权
    Devices for and methods of forming segregated layers from mixtures of granular materials 有权

    公开(公告)号：US10926966B2

    公开(公告)日：2021-02-23

    申请号：US15984533

    申请日：2018-05-21

    申请人： Northwestern University

    发明人： Paul B. Umbanhowar ,  Richard M. Lueptow ,  Yi Fan

    IPC分类号： B65G69/10 ,  B01F11/00 ,  B01F5/24

    摘要： Layering of initially mixed granular dissimilar material components deposited by surface flow is realized by varying the relative angle of the flowing layer periodically with respect to the bulk of the pile formed. Layer thickness and extent can be controlled by varying the timing and extent of the surface variations. Variation in surface flow rates may be realized by varying the feed rate from an inlet to a collection base at a fixed feed location, varying the feed location relative to the collection base, tilting the collection base that is supporting the material, and reducing the pile repose angle using vibration or fluid flow through the base.

    Biomimetic and variable stiffness ankle system and related methods
    54.
    发明授权
    Biomimetic and variable stiffness ankle system and related methods 有权

    公开(公告)号：US10806602B2

    公开(公告)日：2020-10-20

    申请号：US15723575

    申请日：2017-10-03

    申请人： Rehabilitation Institute of Chicago

    发明人： Elliott J. Rouse ,  Max K. Shepherd

    IPC分类号： A61F2/66 ,  A61B5/103 ,  A61F2/76 ,  A61F2/50

    摘要： A cam system for an assistive device and related methods are disclosed. The cam system may comprise a cam profile and a cam follower. The cam profile has a curved outer edge comprising a concave portion. The cam follower is positioned within the concave portion when the assistive device is in an equilibrium position. The assistive device may further comprise a spring that deflects in response to a force applied by the cam system. The assistive device may have a sliding element to adjust the stiffness of the spring in deflection. The assistive device may take the form of a prosthesis or an orthosis.

    Locking folding knife and knife lock mechanism
    55.
    发明授权
    Locking folding knife and knife lock mechanism 有权

    公开(公告)号：US10792823B2

    公开(公告)日：2020-10-06

    申请号：US16229660

    申请日：2018-12-21

    申请人： Jerry P. Busse

    发明人： Jerry P. Busse

    IPC分类号： B26B1/04

    摘要： Various embodiments of a folding knife are disclosed. In one embodiment, a folding knife is provided that has a handle having a slot having at least one top surface and a blade pivotably connected to the handle, wherein the blade has a tang having a contoured peripheral surface and an open block engagement tang surface, wherein the blade has an axis of rotation. The blade further has a locking block translatable on a plane orthogonal to the axis of rotation of the blade, wherein the locking block has an engagement surface positioned to contact at least one of the contoured peripheral surface and the open block engagement tang surface when the blade is in an open position, and wherein the locking block has at least two bearing surfaces engaging the at least one top surface along two lines.

    Progressive mobility aid device
    59.
    发明授权
    Progressive mobility aid device 有权

    公开(公告)号：US10688013B2

    公开(公告)日：2020-06-23

    申请号：US16440943

    申请日：2019-06-13

    申请人： Debbie Joles ,  Chad Morgan ,  Sandeep Kumar

    发明人： Debbie Joles ,  Chad Morgan ,  Sandeep Kumar

    IPC分类号： A61H3/04 ,  A61H3/00

    摘要： Disclosed herein are novel embodiments of progressive mobility aid devices. Such progressive mobility aid devices are designed to progress through a variety of configurations to accommodate the use of the progressive mobility aid device in a safe and secure manner as the user of the progressive mobility aid device traverses a variety of surfaces and terrain such as traversing irregular surfaces including sidewalks and stone-based surfaces; loose surfaces and terrain including gravel and sand; soft surfaces including wet ground and carpeted surfaces; and variable gradient surfaces including stairs and inclining or declining surfaces and terrain. The progressive mobility aid devices accommodate such uses with an articulating design that provides for front legs of the progressive mobility aid device to be pivotably adjusted with respect to the rear legs of the progressive mobility aid device, and with wheel assemblies that are selectively deployable and retractable.