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    Cast components having surfaces with resin coatings
    53.
    发明授权
    Cast components having surfaces with resin coatings 有权

    公开(公告)号：US11052583B2

    公开(公告)日：2021-07-06

    申请号：US15871517

    申请日：2018-01-15

    Applicant: Amazon Technologies, Inc.

    Inventor： Steven McGinnis ,  Prescott Gee Glynn ,  Kader Chellabi ,  Adrian Timothy Wallace ,  Ricky Dean Welsh

    IPC: B29C44/58 ,  B29C44/34 ,  B29C44/42 ,  B29C33/50 ,  B29D99/00 ,  B29C33/38 ,  B29L31/30 ,  B29C33/48

    Abstract: Lightweight and strong components may be manufactured using foam material compositions and resin coating materials by the processes described herein. One or more mandrels and/or a molding tool may be coated with resin coatings, the one or more mandrels may be inserted into the molding tool, and a foam material composition may be injected into the molding tool. After closing the molding tool, the foam material composition may expand and cure to form a component, and heat may be applied to cure the resin coatings into skins. For example, an external skin may be formed by the resin coatings on an exterior surface of the component in contact with surfaces of the molding tool, and one or more internal skins may be formed by the resin coatings on one or more interior surfaces of negative space spars of the component in contact with surfaces of the one or more mandrels.

    Circumferentially-driven propulsion mechanism
    54.
    发明授权
    Circumferentially-driven propulsion mechanism 有权

    公开(公告)号：US11046432B1

    公开(公告)日：2021-06-29

    申请号：US16193101

    申请日：2018-11-16

    Applicant: Amazon Technologies, Inc.

    Inventor： Brian C. Beckman ,  Menashe Haskin ,  Atishkumar Kalyan ,  Louis Leroi LeGrand, III ,  Michael Rolnik ,  Ricky Dean Welsh

    IPC: B64C27/20 ,  B64C39/02 ,  B64C27/08

    Abstract: Described is an unmanned aerial vehicle (“UAV”) that includes a lifting propulsion mechanism that is circumferentially-driven and includes a propeller assembly and a propeller rim enclosure. The propeller assembly includes a plurality of propeller blades that extend radially and are coupled to an inner side of a substantially circular propeller rim that encompasses the propeller blades. Permanent magnets are coupled to an outer side of the propeller rim. The propeller rim and the magnets are positioned within a cavity of the propeller rim enclosure such that the propeller rim will rotate within the propeller rim enclosure. Also within the cavity of the propeller rim enclosure are electromagnets that are used to cause the propeller rim to rotate.

    MAINTAINING ATTITUDE CONTROL OF UNMANNED AERIAL VEHICLES BY VARYING CENTERS OF GRAVITY
    56.
    发明申请
    MAINTAINING ATTITUDE CONTROL OF UNMANNED AERIAL VEHICLES BY VARYING CENTERS OF GRAVITY 有权

    公开(公告)号：US20210107633A1

    公开(公告)日：2021-04-15

    申请号：US16992074

    申请日：2020-08-12

    Applicant: Amazon Technologies, Inc.

    Inventor： Gur Kimchi ,  Dominic Timothy Shiosaki ,  Ricky Dean Welsh

    IPC: B64C25/26 ,  B64C39/02 ,  B64C25/52 ,  B64C17/02 ,  B64C27/52 ,  B64D31/06 ,  B64C25/10

    Abstract: Aerial vehicles may be configured to control their attitudes by changing one or more physical attributes. For example, an aerial vehicle may be outfitted with propulsion motors having repositionable mounts by which the motors may be rotated about one or more axes, in order to redirect forces generated by the motors during operation. An aerial vehicle may also be outfitted with one or more other movable objects such as landing gear, antenna and/or engaged payloads, and one or more of such objects may be translated in one or more directions in order to adjust a center of gravity of the aerial vehicle. By varying angles by which forces are supplied to the aerial vehicle, or locations of the center of gravity of the aerial vehicle, a desired attitude of the aerial vehicle may be maintained irrespective of velocity, altitude and/or forces of thrust, lift, weight or drag acting upon the aerial vehicle.

    Tethering system for unmanned aerial vehicles
    58.
    发明授权
    Tethering system for unmanned aerial vehicles 有权

    公开(公告)号：US10384777B1

    公开(公告)日：2019-08-20

    申请号：US14633502

    申请日：2015-02-27

    Applicant: Amazon Technologies, Inc.

    Inventor： Ricky Dean Welsh

    IPC: B64C39/02 ,  B64F3/02

    Abstract: This disclosure describes a tethering system in which an unmanned aerial vehicle is attached by a tether to a movable tethering apparatus (e.g., a small cart or other mechanism) which rolls or slides along a guiding portion (e.g., a pipe, track, trough, cable, etc.). In various implementations, the guiding portion may be on or near the ground wherein the unmanned aerial vehicle flies above the guiding portion, or alternatively the guiding portion may be attached a ceiling or other elevated structure wherein the tether allows the unmanned aerial vehicle to fly below but is short enough so as to prevent the unmanned aerial vehicle from impacting the ground. In various implementations, the guiding portion may provide electricity that is conducted through the tether for powering the flight of the unmanned aerial vehicle.

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