An electric drive system including: a rotary motor system including a hub assembly, a first rotating assembly, a second rotating assembly, and a third rotating assembly, wherein the hub assembly defines a rotational axis about which the first rotating assembly, the second rotating assembly, and the third rotating assembly are coaxially aligned and are capable of independent rotational movement independent of each other; a multi-bar linkage mechanism connected to each of the first and third rotating assemblies and connected to the hub assembly and constraining movement of the hub assembly so that the rotational axis of the hub assembly moves along a defined path that is in a transverse direction relative to the rotational axis and wherein the multi-bar linkage mechanism causes the rotational axis of the hub assembly to translate along the defined path in response to relative rotation of the first rotating assembly and the third rotating assembly with respect to each other.

An energy storage unit may include multiple kinetic cells that store kinetic energy by use of a rotating, levitating mass to provide large amounts of electrical energy therefrom. The kinetic cells may use air bearings to support the levitating mass in a frictionless state. In an embodiment, the air bearings may be aerodynamic air bearings that enable the mass to self-levitate when rotating, thereby enabling the energy storage unit to be transported without the kinetic cells being charged.

A rotary motor capable of reducing repulsive force is disclosed. The rotary motor comprises a housing, a stator located in the housing and configured to have a shape of a cylinder on which a central part is penetrated, and a rotator configured to rotate in the stator. Here, the stator rotates clockwise or counterclockwise.

A rotor for an electromagnetic clutch assembly includes a substantially cylindrical main body extending from a first end to a second end. The first end of the main body is configured to engage an armature of the electromagnetic clutch assembly and includes a first flange formed around a circumference thereof. The second end of the main body includes a second flange formed around a circumference thereof. One of the first flange or the second flange has a non-uniform cross-sectional shape as the one of the first flange or the second flange extends circumferentially around the main body, wherein the cross-sectional shape of the one of the first flange or the second flange taken through a plane extending parallel to an axis of rotation of the main body.

An electric drive system including: a rotary motor system including a hub assembly, a first rotating assembly, a second rotating assembly, and a third rotating assembly, wherein the hub assembly defines a rotational axis about which the first rotating assembly, the second rotating assembly, and the third rotating assembly are coaxially aligned and are capable of independent rotational movement independent of each other; a multi-bar linkage mechanism connected to each of the first and third rotating assemblies and connected to the hub assembly and constraining movement of the hub assembly so that the rotational axis of the hub assembly moves along a defined path that is in a transverse direction relative to the rotational axis and wherein the multi-bar linkage mechanism causes the rotational axis of the hub assembly to translate along the defined path in response to relative rotation of the first rotating assembly and the third rotating assembly with respect to each other.

A device for converting between motion in one direction and motion in another direction is disclosed. The device comprises: a magnetic protrusion or patch mounted on a first movable element and comprising a surface; and a track with predefined magnetic properties mounted on a further movable element, said track defining a pathway towards which said magnetic protrusion or patch is attracted by magnetic forces, said magnetic forces constraining said movable elements to move such that said magnetic protrusion or patch travels in a direction along said magnetic track in response to relative movement between said first and further elements.

The present invention relates to a linear actuator with an improved electric motor. In particular, the invention focuses on improved technical solutions for braking or locking of a rotating electric motor by using an electro-mechanical locking mechanism. The mechanism uses a solenoid having a nonrotating locking element, which is displaceable by solenoid action and arranged to engage with a rotating locking element. In particular, solutions have been found in which a surprisingly small solenoid with a much-reduced requirement on stroke length may be deployed to effectively unidirectionally or bidirectionally lock against rotation of the motor.

A motor arrangement includes a solenoid disposed within a cavity of the motor stator. The solenoid is configured to axially move the motor shaft arrangement. In certain examples, the solenoid causes the motor shaft arrangement to selectively engage a torque limiting arrangement or other device. The motor shaft arrangement may be biased into engagement with the device.

An electric drive system including: a rotary motor system including a hub assembly, a first rotating assembly, a second rotating assembly, and a third rotating assembly, wherein the hub assembly defines a rotational axis about which the first rotating assembly, the second rotating assembly, and the third rotating assembly are coaxially aligned and are capable of independent rotational movement independent of each other; a multi-bar linkage mechanism connected to each of the first and third rotating assemblies and connected to the hub assembly and constraining movement of the hub assembly so that the rotational axis of the hub assembly moves along a defined path that is in a transverse direction relative to the rotational axis and wherein the multi-bar linkage mechanism causes the rotational axis of the hub assembly to translate along the defined path in response to relative rotation of the first rotating assembly and the third rotating assembly with respect to each other.

An electromechanical actuator assembly operable in a plurality of modes. The EMA assembly includes: an electrical motor having a motor shaft extending along an axis (A) of the EMA, the motor driving the shaft to rotate about the axis; a gear assembly mounted around, and in geared connection with the shaft, to rotate with the shaft; an EMA output connected to the gear assembly such that rotation of the motor shaft causes rotation of the output via the gear assembly, the output rotating at a speed which is a predetermined fraction of the speed of rotation of the motor shaft based on the gear ratio of the gear assembly.