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    Switchable magnetic battery docking
    1.
    发明授权
    Switchable magnetic battery docking 有权

    公开(公告)号：US10807492B1

    公开(公告)日：2020-10-20

    申请号：US15130880

    申请日：2016-04-15

    Applicant: X Development LLC

    Inventor： Eric Holland ,  Michael George Sleator

    IPC: B60K1/04 ,  B60L53/80 ,  B60L53/14 ,  B60L53/35 ,  B60L53/60 ,  B60L58/21 ,  B60S5/06 ,  H01F7/04

    Abstract: One or more switchable magnetic systems is located near a battery attachment surface of an electric vehicle, where the battery attachment surface is configured to accept and electronically connect to a battery pack. The electric vehicle also includes a control system that operates the one or more switchable magnetic system switching from a first to a second state. In the first state the magnetic field of the switchable magnetic system secures the battery pack to the battery attachment surface so that the battery pack is electronically coupled to an electric motor of the electric vehicle. When the control system receives a message corresponding to removal of the battery pack, the control system switches the switchable magnetic system to the second state such that the battery pack is removable from the battery attachment surface.

    Factory-calibrated multi-spoke strain sensor system
    2.
    发明授权
    Factory-calibrated multi-spoke strain sensor system 有权

    公开(公告)号：US10295418B1

    公开(公告)日：2019-05-21

    申请号：US15376845

    申请日：2016-12-13

    Applicant: X Development LLC

    Inventor： Eric Holland

    IPC: G01L3/10 ,  G01L3/14

    Abstract: A sensor system includes a body, which includes an outer wall defining an inner opening centered about an axis, and radiating structures disposed in the opening and extending radially from the axis to the outer wall. The radiating structures are spaced circumferentially around the axis by a substantially equal angle. The system includes sensors that generate signals in response to deformations of the radiating structures. The signals provide vectors corresponding to the deformations. The deformations are caused by: (i) a torque about the axis, and (ii) a secondary torque or force. The system includes a controller electrically coupled to the sensors and configured to determine, by combining the vectors provided by the signals, a measurement of the torque about the axis. The sensors are arranged on the radiating structures such that combining the vectors substantially eliminates any effect of the secondary torque or force from the measurement.

    Rotary transformer
    5.
    发明授权
    Rotary transformer 有权

    公开(公告)号：US09718193B1

    公开(公告)日：2017-08-01

    申请号：US14963541

    申请日：2015-12-09

    Applicant: X Development LLC

    Inventor： Michael George Sleator ,  Eric Holland

    IPC: H01F27/28 ,  B25J13/08 ,  H03D3/02 ,  H03C3/12 ,  H03L7/08 ,  H03B5/12 ,  H03M5/12 ,  B25J13/02

    CPC classification number: H03M5/12 ,  B25J13/006 ,  H01F38/18 ,  H03C3/12 ,  H03D3/02 ,  H03L7/08

    Abstract: Example implementations may relate to a rotary transformer configured to transmit data. In some implementations, the rotary transformer may include a primary transformer component with a primary winding magnetically coupled to a secondary transformer component with a secondary winding. The rotary transformer may also include a resonant circuit including a frequency determining element and an amplifier. The frequency determining element may consist of the primary and secondary windings connected in parallel to respective capacitors. The primary transformer component may be coupled to a fixed-frequency signal generator. The rotary transformer may include a modulator coupled to the secondary transformer component and configured to vary the phase of the resonant circuit to generate an output signal and a demodulator coupled to the primary transformer component and configured to demodulate the output signal.

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