Abstract: An inductive power transfer system operable in a plurality of modes comprising an inductive power transmitter capable of providing power to the inductive power receiver over an extended region. The system may be switchable between the various modes by means of a mode selector operable to activate various features as required, such as: an alignment mechanism a resonance tuner, an auxiliary coil arrangement or a resonance seeking arrangement. Associated methods are taught.

Abstract: A locator for locating power outlets and power receivers. A sensor is provided in a power receiver for detecting a detection signal emitted by a remote power outlet. A processor uses the detected signal to compute location coordinates of the power outlet.

Abstract: A triggerable power transmitter for power transmission from a primary coil to an inductively coupled secondary coil in a power receiver has a primary coil; a driver for electrically driving the primary coil; a probing coil receives analog signals indicative of resonance properties of the primary coil; analog filters may be used to filter frequencies, and a processor capable of generating digital information in response to the analog signal and determining if said primary coil is coupled to a secondary coil based on the digital information, and triggering power from the primary coil to said secondary coil when said primary coil is inductively coupled to said secondary coil. A resistor may be selectably connected in series with the primary coil and shorted out when power is transmitted.

Abstract: An inductive power transmitter for inductive power transmission to an inductive power receiver is provided, comprising a primary coil, capable of being inductively coupled to a secondary coil in the inductive power receiver, a power supply and an associate driver configured to provide a varying electrical potential from the power supply to the primary coil, a monitoring system configured to measure electrical flow parameters of the primary coil, and a controller configured to detect, based on the electrical flow parameters measured by the monitoring system, an error condition indicative of a foreign object introduced between the primary coil and the secondary coil, and to facilitate, when the error condition is detected, interrupting the electrical potential to the primary coil.

Abstract: Remote marker systems are disclosed for marking a target using optical markers. Such systems may allow a target to be marked using a remote optical marking device. Also disclosed are photochromic solutions and methods of their preparation.

Abstract: An inductive power receiver configured for receiving power transferred from an inductive power outlet having a primary coil includes a secondary coil configured to form an inductive couple with the primary coil thereby facilitating the power transfer. The inductive power receiver further includes a transmission circuit having a variable amplifier configured to vary the voltage of the power drawn by the secondary coil, and a modulator configured to control the variable amplifier. The inductive power receiver is configured to modulate a signal by the varying of the voltage. An inductive power outlet configured for transferring power to the inductive power receiver includes a primary coil and a receiving circuit configured to detect changes in voltage of the power transferred and to produce an output signal based on the changes.

Abstract: A triggerable power transmitter for power transmission from a primary coil to an inductively coupled secondary coil in a power receiver has a primary coil; a driver for electrically driving the primary coil; a front end receiving analog signal indicative of resonance properties of the primary coil and generating digital information in response to the analog signal; and a processor capable of: determining if said primary coil is coupled to a secondary coil based on the digital information, and triggering power from the primary coil to said secondary coil when said primary coil is inductively coupled to said secondary coil. The effective inductance of the primary coil increases reducing the resonance frequency when a secondary coil is inductively coupled to the primary coil. However, foreign material such as a metal sheet placed on the primary coil increases the effective resistance thus shortening the decay time of the resonance.

Abstract: An inductively enabled power pack charging system and method includes an integrated circuit for controlling inductive transfer of power to the power pack and managing communication with an external power source. The system may further include an electrochemical cell for storing energy received from the external power supply and magnetic shielding material for guiding magnetic flux away from the electrochemical cell.

Abstract: Wireless power transfer between a power transmitter and a power receiver may include a power transfer established by a detector of the wireless power transmitter detecting a magnetic field from a wireless power receiver in proximity to the wireless power transmitter and activating the wireless power transmitter to transfer power to the wireless power receiver.

Abstract: A system to prevent the creation of pressure-wounds in a subject is provided, comprising at least one pressure detection mat comprising at least one layer of an insulating material sandwiched between first and second layers of conducting and a second layer of conducting strips overlapping at a plurality of intersections forming sensors, a driving unit configured to supply electrical potential selectively to the first layer' conducting strips, a control unit wired to the second layer's conducting strips and configured to control the driving unit and to receive data from the sensors, a processor configured to monitor electrical potential on the second layer's conductive strips to calculate impedance values and determine accumulated pressure applied thereto by calculating a summation of pressure measured by the sensor at predetermined intervals, and at least one display configured to present indications of pressure distribution and accumulated pressure.

Abstract: An inductive power transfer system and method for transferring power to an electrical device wirelessly include an inductive power outlet and an inductive power receiver. During operation, instruction signals are sent from the inductive power outlet to the inductive power receiver. When no instruction signals are transferred, the system is configured to deactivate such that power is drawn by the system only during operation.

Abstract: An inductive power transfer system includes an inductive power transmitter in the shape of a container that is capable of holding one or more electrical devices. The system is operable to transfer power inductively to devices stowed within the container via inductive power receivers. The inductive power transmitter includes at least one primary inductor configured to couple inductively with at least one secondary inductor and at least one driver configured to provide a variable electric potential at a driving frequency across said primary inductor. The inductive power receiver may comprise at least one secondary inductor connectable to a receiving circuit and an electric load, said secondary inductor configured to couple inductively with said at least one primary inductor such that power is transferred to said electric load.

Abstract: A flexible conductive material may be a selectively conductive textile fabricated by intertwining yarns having different affinities to conductive impregnation. Another flexible conductive material may be formed from an array of conductive elements connected via sinuous connecting wires embedded in a flexible host material. The regions having a high conductivity may serve as conductive electrodes, for example of a pressure sensing mat.

Abstract: An inductive power outlet operable to transfer power to an inductive power receiver includes a driver wired to a primary inductive coil and operable to provide a driving voltage across the primary inductive coil. The primary inductive coil is configured to form an inductive couple having a characteristic resonant frequency with at least one secondary inductive coil wired to an electric load, the secondary inductive coil being associated with the inductive power receiver. The driving voltage oscillates at a transmission frequency substantially different from the characteristic resonant frequency of the inductive couple.

Abstract: A transmission-guard is disclosed for preventing an inductive power outlet from transmitting power in the absence of an inductive power receiver. A transmission lock is associated with an inductive power outlet and a transmission key is associated with an inductive power receiver. The transmission lock is configured to prevent a primary inductor from connecting to the power supply unless triggered by a release signal via the transmission key.

Abstract: An inductive power receiver including a dual purpose inductor wired to an electric load, the dual purpose inductor is configured to inductively couple with a primary inductor wired to a power supply. The dual purpose inductor typically comprises a radio antenna such as a near field communication antenna. A method is described for charging electromagnetic cells via the inductive power receiver.

Abstract: A system and method is disclosed for integrating inductive power outlet functionality to provide power transfer to electrical devices, as an in-surface wireless charging system, embedded into a host such as a furniture item. An inductive power outlet may include a body casing for containing a primary inductor a driving unit and a fastening mechanism. The body casing may have dimensions suitable for introduction into a passageway through a plate of the item of furniture. The fastening mechanism may be utilized to secure the body casing to the plate of the item of furniture.

Abstract: An inductive power transfer system and method for transferring power to an electrical device wirelessly includes an inductive power outlet and an inductive power receiver. During operation, instruction signals are sent from the inductive power outlet to the inductive power receiver. When no instruction signals are transferred, the system is configured to deactivate such that power is drawn by the system only during operation.

Abstract: A transmission-guard is disclosed for preventing an inductive power outlet from transmitting power in the absence of an inductive power receiver. A transmission lock is associated with an inductive power outlet and a transmission key is associated with an inductive power receiver. The transmission lock is configured to prevent a primary inductor from connecting to the power supply unless triggered by a release signal via the transmission key.

Abstract: A pressure wound prevention system operable to prompt at least one caregiver to reposition a subject at risk of developing a pressure wound. The system includes a pressure-detection surface comprising a plurality of pressure sensors configured to monitor pressure exerted upon the pressure-detection surface by the subject as well as orientation sensors configured to monitor an angle of the pressure-detection surface. A processor is operable to interpret and analyze data from the sensors and to provide indications to a caregiver when the subject requires repositioning.