Expandable pistons
    31.
    发明授权

    公开(公告)号:US10738615B1

    公开(公告)日:2020-08-11

    申请号:US16507997

    申请日:2019-07-10

    Abstract: A piston is arranged to move in a cylinder to define a variable volume chamber, and can expand in two directions under the influence of pressure in the variable volume chamber to provide sealing against the cylinder. The piston can comprise a primary foot and a secondary foot arranged to move relative to each other in a first direction. The primary foot and the secondary foot can each comprise plural segments arranged to move relative to each other in a second direction. The piston may be suitable for use in an inner rotor, where it forms the end of a projection of the inner rotor and fully exits and reenters the cylinders.

    DIFFERENTIAL PLANETARY GEARBOX
    32.
    发明申请

    公开(公告)号:US20190085941A1

    公开(公告)日:2019-03-21

    申请号:US16133676

    申请日:2018-09-17

    Abstract: A torque transfer device has plural planets arranged for planetary rotation about one or more sun gears and within one or more ring gears. Each planet includes at least one planetary gear set comprising plural planetary gears connected to rotate together, but having a different diameter to form a differential gear system. To improve load sharing, the plural planetary gears of each planetary gear set may have a different helical angle, the plural planetary gear sets being axially movable with respect to one another. Alternatively or in addition, the planetary gears may be made flexible with respect to radial forces.

    Low joint strain fitness system
    33.
    发明授权

    公开(公告)号:US12280288B2

    公开(公告)日:2025-04-22

    申请号:US18503178

    申请日:2023-11-06

    Abstract: An exercise device is provided using, for example, handles, connected to cords that increase in tension as the handles are pulled. The tension may be provided using elasticity of the cords or by an actuator, for example powered by an electric motor. Pulleys allow adequate extension while remaining compact enough to fit in a standard height room and allowing accessibility to components. Upper and forward pulleys may be used. The upper pulleys may be displaced from potential obstacles, including the forward pulleys.

    Compact actuator arrangement
    34.
    发明授权

    公开(公告)号:US12179352B2

    公开(公告)日:2024-12-31

    申请号:US17418897

    申请日:2020-01-16

    Abstract: An actuator comprising: a motor comprising a housing and a drive shaft, the motor arranged to rotate the drive shaft relative to the housing about a drive shaft axis; a first torque transfer device comprising a first drive member on the drive shaft and a first driven member on a second shaft, the first drive member being arranged to transfer torque to the first driven member, such that the first torque transfer device is arranged to transfer torque from the drive shaft to the second shaft, the second shaft being rotatable about a second shaft axis spaced from the drive shaft axis; and an output torque transfer device comprising an output drive member on the second shaft and an output driven member, the output drive member being arranged to transfer torque to the output driven member, such that the output driven member rotates about an output axis; wherein a torque ratio of the output torque transfer device is smaller than or equal to a torque ratio of the first torque transfer device.

    PULLEY AND CABLE ARRANGEMENT
    35.
    发明申请

    公开(公告)号:US20220107009A1

    公开(公告)日:2022-04-07

    申请号:US17418892

    申请日:2020-01-16

    Abstract: A pulley system comprising: a first pulley rotatable about a first pulley axis, a first cable portion wrapped around the first pulley, such that, when the first pulley is rotated in a first direction about the first pulley axis, the first cable portion is unwound from the first pulley, and a second cable portion wrapped around the first pulley, such that, when the first pulley is rotated in the first direction about the first pulley axis, the second cable portion is wound further onto the first pulley, wherein the first and second cable portions form a continuous cable passing radially through the first pulley.

    DIFFERENTIAL PLANETARY GEARBOX
    37.
    发明申请

    公开(公告)号:US20210025478A1

    公开(公告)日:2021-01-28

    申请号:US17069444

    申请日:2020-10-13

    Abstract: A torque transfer device has plural planets arranged for planetary rotation about one or more sun gears and within one or more ring gears. Each planet includes at least one planetary gear set comprising plural planetary gears connected to rotate together, but having a different diameter to form a differential gear system. To improve load sharing, the plural planetary gears of each planetary gear set may have a different helical angle, the plural planetary gear sets being axially movable with respect to one another. Alternatively or in addition, the planetary gears may be made flexible with respect to radial forces.

    Roller drive
    38.
    发明授权

    公开(公告)号:US10174818B2

    公开(公告)日:2019-01-08

    申请号:US15115897

    申请日:2015-01-30

    Abstract: A high speed ratio drive system is formed of planet rollers, each having varying diameter, an outer fixed ring in contact with one diameter of the planet rollers, and an outer drive ring in contact with another diameter of the planet rollers. An inner drive element is provided by a sun drive roller in contact with the planet rollers or by a planet carrier. Preferably the system has an axial reflective symmetry minimizing twisting forces on the planet rollers.

    MOBILE PLATFORM
    39.
    发明申请
    MOBILE PLATFORM 有权
    移动平台

    公开(公告)号:US20160251044A1

    公开(公告)日:2016-09-01

    申请号:US15012664

    申请日:2016-02-01

    CPC classification number: B62D57/022 B60F3/0007 B60F5/00 B62D57/028

    Abstract: A mobile platform intended for civilian, industrial, research or other use. An ambulation system or mobile platform such as for traveling over uneven terrain includes one or more leg arrangements attached to a main body or chassis. In an embodiment, a leg arrangement comprises one or more legs, such as legs that rotate in the same and singular direction around their respective rotary joints when the vehicle is moving in a single direction. The rotational axis for both legs is located near each other and preferably coaxially and allows ground contact of two or more legs at all times.

    Abstract translation: 用于民用,工业,研究或其他用途的移动平台。 诸如用于在不平坦地形上行进的行走系统或移动平台包括附接到主体或底盘的一个或多个腿部装置。 在一个实施例中,腿布置包括一个或多个腿,例如当车辆沿单个方向移动时围绕其相应的旋转接头以相同和单数方向旋转的腿。 两个腿的旋转轴线彼此靠近并且优选地同轴并且允许两个或更多个腿在任何时候的地面接触。

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