The present invention relates to wobbly balls and exercise coil springs. A wobbly ball may include a non-spherical rigid, hollow ball body formed of two halves, each half comprising an upper ladle or a lower ladle which are welded together along a central seam therebetween, and defining a hollow cavity therein. A spherical inner ball is captured within the hollow cavity of the hollow ball body of the wobbly ball, so that upon movement of the wobbly ball, the inner ball rolls within the cavity, producing a wobbly, eccentric motion. The exercise coil spring may be formed of a single coiled wire, the coiled spring including a central portion where the coiled wire is coiled to a first diameter that is constant. Opposed flared ends are provided ends of the central portion where the coiled wire is progressively coiled from the first diameter to a second diameter, which is greater.

A switch device (10) and method for generation of energy for operating the switch device (10), wherein the switch device (10) is provided with a drive unit (120) interacting with an actuation device operable by a user, and with a moving device (130) configured to be set in motion by the drive unit (120), and with an energy harvester (132, 140, 140a) for providing energy to the switch device (10) in dependence on a motion of the moving device (130), such that energy for commands or other operations is provided to the switch device (10). The moving device (130) is configured to be repeatedly repositioned in relation to a defined zero position, as long as it has kinetic energy, in order to provide kinetic energy which can be converted in electric energy by the energy harvester (132, 140, 140a). Such an electromechanical device for generating energy can ensure wireless operation of the switch device (10) without the need of batteries or any other kind of power supply.

A switch device (10) and method for generation of energy for operating the switch device (10), wherein the switch device (10) is provided with a drive unit (120) interacting with an actuation device operable by a user, and with a moving device (130) configured to be set in motion by the drive unit (120), and with an energy harvester (132, 140, 140a) for providing energy to the switch device (10) in dependence on a motion of the moving device (130), such that energy for commands or other operations is provided to the switch device (10). The moving device (130) is configured to be repeatedly repositioned in relation to a defined zero position, as long as it has kinetic energy, in order to provide kinetic energy which can be converted in electric energy by the energy harvester (132, 140, 140a). Such an electromechanical device for generating energy can ensure wireless operation of the switch device (10) without the need of batteries or any other kind of power supply.

A self charging portable power source docking station system for use with automobiles that converts mechanical energy into electrical energy.

A self charging portable power source docking station system for use with automobiles that converts mechanical energy into electrical energy.

Provided are a lens driving motor and an elastic member of the lens driving motor. The elastic member of a lens driving motor, the elastic member includes a first spring and a second spring. The second spring is different from the first spring and disposed together with the first spring on one side of a carrier to support the carrier. A first lead line of a coil and a first external power source are connected to the first spring, and a second lead line of the coil and a second external power source are connected to the second spring to supply power to the coil. Since the carrier can be assembled to other part after a (+) lead line and a (−) lead line of the coil are connected to the first and second springs, respectively, using solder, a process is simple and convenient.

A device for recovering or dampening vibratory energy from a mechanical resonator, comprising: an electrical generator comprising an element for converting mechanical vibration energy into electrical charges coupled to the resonator, the electrical generator periodically transferring a portion of the electrical charges from one terminal of the conversion element to the other; a frequency variation to phase variation conversion device, comprising an injection-locked oscillator of which the free-running oscillation frequency is equal to the resonance frequency of the resonator, and supplying to the electrical generator a control signal of frequency equal to that of the signal outputted by the conversion element and of which the phase shift depends on the difference between the frequency of the signal outputted by the conversion element and the resonance frequency of the resonator.

A transducer assembly configured to convert a pyrotechnic initiation to an electrical signal may comprise a magnet, a hollow tube, and a conductive element. The hollow tube may be wrapped around the magnet in the shape of a coil. The hollow tube may be at least partially filled with a thermite. The conductive element may be coupled to an outlet of the hollow tube. The conductive element may seal the outlet of the hollow tube.

A VCM is disclosed, the VCM including a rotor including a bobbin arranged at an upper surface of a base formed with an opening, and a driving coil wound on the bobbin, a stator including a driving magnet opposite to the driving coil, and a yoke secured by the driving magnet at an inner surface of a lateral plate, and a tilting unit including a tilt magnet arranged at an outer surface of the lateral plate, a housing fixing the tilt magnet, and a tilt coil unit opposite to the tilt magnet.

The operating unit for a vehicle is provided with a housing and an operating element elastically mounted in and/or on the housing, wherein the elastically mounted operating element forms a spring-mass system having a construction-related resonance frequency. The operating unit is further provided with an actuator for pulse-shaped mechanical excitation of the operating element, and a control unit for controlling the actuator when manually actuating the operating element. The resonance frequency is, due to construction, above the highest cut-off frequency that can typically still be detected by receptors for haptic feedback and/or for tactile sensation of a person. The frequency spectrum of the mechanical pulse at the resonance frequency and/or at one of the harmonics of the resonance frequency has no frequency components in that the power density spectrum above the cut-off frequency is energy-free or substantially energy-free.