Perpetuum Ltd

Roy Freeland

Stephen William Roberts

Neil Maurice White

John Mark Morgan

Giles Stanley

Keith Dobson Dawkins

Paul R Roberts

An electromechanical generator comprising an electromechanical device for converting mechanical vibrational energy into electrical energy, the electromechanical device being a velocity damped resonator having a damping coefficient and a resonant frequency, a power detector for detecting the output electrical power from the electromechanical device, a controller, and a damping coefficient adjuster for adjusting the damping coefficient of the electromechanical device, the controller being arranged to control the damping coefficient adjuster in response to the output electrical power detected by the power detector.

Converting mechanical vibrational energy into electrical energy

This invention relates to the use of an electromagnetic generator and a pressure bladder located within a biological body in such a position to take advantage of the pressure fluctuations found within that body to produce electrical power. The invention uses these pressure fluctuations to displace the moving parts of a generator, to produce electricity in accordance with the Faraday principal, to power implanted devices.

Energy harvester for an implant device

An electromechanical generator for converting mechanical vibrational energy into electrical energy, the electromechanical generator comprising a substantially annular high-permeability core, the core including at least one magnet therein to define a magnetic circuit, at least one rotatable bearing mounting the core to at least one bearing support, the at least one bearing permitting the core to pivot about a pivot axis, a gap provided in the core, a body of high-permeability material located in the gap, the body being spaced from respective end faces of the core by a respective spacing whereby pivoting movement of the core about the pivot axis causes relative movement between the end faces of the core and the body, and a rotationally fixed coil surrounding a length of the core coaxially with the pivot axis.

Generator for converting mechanical vibrational energy into electrical energy

An electromechanical generator comprising a resonator comprising a vibratable mass, a biasing device connected to the vibratable mass, a power transduction device for converting mechanical vibrational movement of the vibratable mass into electrical power, and a resonator support for supporting the vibratable mass, biasing device and power transduction device, the electromechanical generator further comprising a vibratable mount incorporating at least one spring, the vibratable mount being connected to the resonator support for mounting the resonator to a vibratable body from which electrical energy is to be harvested.

Electromechanical generator for converting mechanical vibrational energy into electrical energy

An electromechanical generator for converting mechanical vibrational energy into electrical energy, the electromechanical generator including a cantilever spring having a fixed end, a free end and a central portion therebetween, a mount for the cantilever spring to which the fixed end is fixed, a mass located at the free end of the cantilever spring, the mass including either a coil or at least one magnet defining a region of magnetic flux, wherein at least one of the fixed end and the free end of the cantilever spring is substantially stiffer than the central portion of the cantilever spring.

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Shawford, United Kingdom

Roy Freeland