Abstract: A power source, charging system, and inductive receiver for mobile devices. A pad or similar base unit comprises a primary, which creates a magnetic field by applying an alternating current to a winding, coil, or any type of current carrying wire. A receiver comprises a means for receiving the energy from the alternating magnetic field and transferring it to a mobile or other device. The receiver can also comprise electronic components or logic to set the voltage and current to the appropriate levels required by the mobile device, or to communicate information or data to and from the pad. The system may also incorporate efficiency measures that improve the efficiency of power transfer between the charger and receiver.

Abstract: A power source, charging system, and inductive receiver for mobile devices. A pad or similar base unit comprises a primary, which creates a magnetic field by applying an alternating current to a winding, coil, or any type of current carrying wire. A receiver comprises a means for receiving the energy from the alternating magnetic field and transferring it to a mobile or other device. The receiver can also comprise electronic components or logic to set the voltage and current to the appropriate levels required by the mobile device, or to communicate information or data to and from the pad. The system may also incorporate efficiency measures that improve the efficiency of power transfer between the charger and receiver.

Abstract: A system and method for variable power transfer in an inductive charging or power system. In accordance with an embodiment the system comprises a pad or similar base unit that contains a primary, which creates an alternating magnetic field. A receiver comprises a means for receiving the energy from the alternating magnetic field from the pad and transferring it to a mobile device, battery, or other device. In accordance with various embodiments, additional features can be incorporated into the system to provide greater power transfer efficiency, and to allow the system to be easily modified for applications that have different power requirements. These include variations in the material used to manufacture the primary and/or the receiver coils; modified circuit designs to be used on the primary and/or receiver side; and additional circuits and components that perform specialized tasks, such as mobile device or battery identification, and automatic voltage or power-setting for different devices or batteries.

Abstract: An electronic device for inductive power transfer with a second electronic device is disclosed. The electronic device includes a first inductive coil and a permanent magnet strucrure for creating a magnetic attachment between the electronic device and the second electronic device. The permanent magnet structure is positioned around an outer perimeter of the inductive coil to align the inductive coil with a second inductive coil in the second electronic device for inductive power transfer. The permanent magnet structure forms a ring that includes a gap and includes one or more arc-shaped magnets. The permanent magnet structure is configured such that the electronic device can be rotated across a continuous range of angles with respect to the second electronic device while keeping alignment between the coils during inductive power transfer. The electronic device is configured to communicate with the second electronic device through a modulated current in the inductive coil.

Abstract: An electronic device for inductive power transfer with a second electronic device is disclosed. The electronic device includes an inductive coil and a permanent magnet structure for creating a magnetic attachment between the electronic device and the second electronic device. The permanent magnet structure is positioned around an outer perimeter of the inductive coil to align the inductive coil with a second inductive coil in the second electronic device for inductive power transfer. The permanent magnet structure forms a ring that includes a gap and includes one or more arc-shaped permanent magnets. The permanent magnet structure is configured such that the electronic device can be rotated across a continuous range of rotational angles with respect to the second electronic device while keeping the alignment between the inductive coil and the second inductive coil during inductive power transfer.

Abstract: A system and method for variable power transfer in an inductive charging or power system. In accordance with an embodiment the system comprises a pad or similar base unit that contains a primary, which creates an alternating magnetic field. A receiver comprises a means for receiving the energy from the alternating magnetic field from the pad and transferring it to a mobile device, battery, or other device. In accordance with various embodiments, additional features can be incorporated into the system to provide greater power transfer efficiency, and to allow the system to be easily modified for applications that have different power requirements. These include variations in the material used to manufacture the primary and/or the receiver coils; modified circuit designs to be used on the primary and/or receiver side; and additional circuits and components that perform specialized tasks, such as mobile device or battery identification, and automatic voltage or power-setting for different devices or batteries.

Abstract: A power source, charging system, and inductive receiver for mobile devices. A pad or similar base unit comprises a primary, which creates a magnetic field by applying an alternating current to a winding, coil, or any type of current carrying wire. A receiver comprises a means for receiving the energy from the alternating magnetic field and transferring it to a mobile or other device. The receiver can also comprise electronic components or logic to set the voltage and current to the appropriate levels required by the mobile device, or to communicate information or data to and from the pad. The system may also incorporate efficiency measures that improve the efficiency of power transfer between the charger and receiver.

Abstract: The present invention relates to a device and method of use thereof for lower leg strengthening, particularly for strengthening the anterior tibialis. In one form, the device includes: a foot mount for mounting to a foot of a user, said foot mount including a pair of opposed side plates and at least two rods interconnecting the opposed side plates, at least one of said two rods including an actuating mechanism for tightening and loosening the opposed side plates about the foot of the user; and a weight mount operatively associated with the foot mount and configured to mount one or more weights thereon. In use, the device is configured to provide resistance to dorsiflexion of the foot of the user.

Abstract: A system includes a primary coil, a first drive circuit, a first sense circuit, and a communication and control circuit for providing power inductively to a portable device that includes a battery and an inductive receiver unit including a receiver coil and a receiver circuit. A portable device includes a battery and a receiver unit capable of receiving inductive power from a compatible inductive charging system including a base unit with a primary coil and associated circuit. A system includes a system rechargeable battery, an inductive coil, a drive circuit, a sense circuit, a communication and control circuit, a receiver rectifier circuit, and a wired power input for providing power inductively to a compatible portable device comprising a battery and an inductive receiver unit including a receiver coil and a receiver circuit.

Abstract: An electronic device having an inductive power transfer system to transfer power to a portable device is disclosed. The electronic device includes a first inductive coil for power transfer using an alternating magnetic field. The electronic device further includes a permanent magnet structure for creating a separable magnetic attachment between the electronic device and the portable device having a second inductive coil for inductive power transfer. The permanent magnet structure is positioned around an outer perimeter of the first inductive coil to align the first inductive coil with the second inductive coil in the portable device for inductive power transfer. The permanent magnet structure includes one or more discontinuous arc-shaped permanent magnets assembled to form a full or partial ring shape that includes a gap to impede eddy current generation in the permanent magnet structure by the alternating magnetic field during inductive power transfer.

Abstract: A system and method for distributed charging of mobile devices. In accordance with an embodiment, the system comprises a secondary coil or receiver associated with a mobile device. When the mobile device is placed in proximity to a base unit having one or more primary coils, each primary coil having a generally planar shape so that when a current is passed through the primary coil a magnetic field is generated in a direction substantially perpendicular to the plane of the primary coil, the perpendicular magnetic field is used to inductively generate a current in the secondary coil or receiver associated with the mobile device, to charge or power the mobile device. In accordance with various embodiments the system can incorporate efficiency measures that improve the efficiency of power transfer between the charger and receiver.

Abstract: An electronic device having an inductive power transfer system to transfer power to a portable device is disclosed. The electronic device includes a first inductive coil for power transfer using an alternating magnetic field. The electronic device further includes a permanent magnet structure for creating a separable magnetic attachment between the electronic device and the portable device having a second inductive coil for inductive power transfer. The permanent magnet structure is positioned around an outer perimeter of the first inductive coil to align the first inductive coil with the second inductive coil in the portable device for inductive power transfer. The permanent magnet structure includes one or more discontinuous arc-shaped permanent magnets assembled to form a full or partial ring shape that includes a gap to impede eddy current generation in the permanent magnet structure by the alternating magnetic field during inductive power transfer.

Abstract: A system for providing power inductively to a portable device is disclosed. The system a primary coil, a drive circuit, a sense circuit, and a communication and control circuit. The communication and control circuit is configured to perform operations, including detection of communication and drive circuit operations. A portable device that includes a receiver unit coupled to a battery and configured to receive inductive power from an inductive charging system including a base unit with a primary coil and associated circuit is also disclosed. The receiver unit includes a receiver coil, a ferrite layer, and a receiver circuit. The receiver circuit includes a receiver communication and control circuit to modulate current in the receiver coil to communicate with a base unit while the receiver circuit is being powered by the inductive charging system.

Abstract: A system for providing power inductively to a portable device is disclosed. The system a primary coil, a drive circuit, a sense circuit, and a communication and control circuit. The communication and control circuit is configured to perform operations, including detection of communication and drive circuit operations. A portable device that includes a receiver unit coupled to a battery and configured to receive inductive power from an inductive charging system including a base unit with a primary coil and associated circuit is also disclosed. The receiver unit includes a receiver coil, a ferrite layer, and a receiver circuit. The receiver circuit includes a receiver communication and control circuit to modulate current in the receiver coil to communicate with a base unit while the receiver circuit is being powered by the inductive charging system.

Abstract: A system and method for distributed charging of mobile devices. In accordance with an embodiment, the system comprises a secondary coil or receiver associated with a mobile device. When the mobile device is placed in proximity to a base unit having one or more primary coils, each primary coil having a generally planar shape so that when a current is passed through the primary coil a magnetic field is generated in a direction substantially perpendicular to the plane of the primary coil, the perpendicular magnetic field is used to inductively generate a current in the secondary coil or receiver associated with the mobile device, to charge or power the mobile device. In accordance with various embodiments the system can incorporate efficiency measures that improve the efficiency of power transfer between the charger and receiver.

Abstract: A power source, charging system, and inductive receiver for mobile devices. A pad or similar base unit comprises a primary, which creates a magnetic field by applying an alternating current to a winding, coil, or any type of current carrying wire. A receiver comprises a means for receiving the energy from the alternating magnetic field and transferring it to a mobile or other device. The receiver can also comprise electronic components or logic to set the voltage and current to the appropriate levels required by the mobile device, or to communicate information or data to and from the pad. The system may also incorporate efficiency measures that improve the efficiency of power transfer between the charger and receiver.

Abstract: A system for power inductively to a portable device is disclosed. In accordance with an embodiment the system includes a first primary coil that provides power inductively at a first power level and a second primary coil that provides power inductively at a second power level different from the first power level. The first primary coil and the second coil area are different in size and overlap one another partially. The system further includes a communication and control circuit that receives current modulated information in the primary coil that provides power. The received information includes information corresponding to a voltage or current induced by the primary coil that provides power, a unique identification code, and a manufacturer code. The system selects which primary coil to use to charge the portable device based on the received information.

Abstract: An electronic device configured to transmit or receive power by inductive power transfer is disclosed. The electronic device includes an inductive charging receiver to receive electromagnetic power through a surface from a magnetic field at an operating frequency within a frequency range of 100 kHz to 1 MHz from an inductive charger. The inductive charging receiver includes a substantially planar inductive coil with a metallic spiral-shaped conductor, and further includes an electrically conductive shield positioned between the conductor of the inductive coil and the surface of the electronic device such that the shield covers the metallic spiral-shaped conductor. The shield may include a metal layer that has a metal thickness in a range of 1 to 70 micrometers, or the shield may be non-metallic. Transmission of electromagnetic power through the shield is allowed in the frequency range for inductive power transfer.

Abstract: A system for power inductively to a portable device is disclosed. In accordance with an embodiment the system includes a first primary coil that provides power inductively at a first power level and a second primary coil that provides power inductively at a second power level different from the first power level. The first primary coil and the second coil area are different in size and overlap one another partially. The system further includes a communication and control circuit that receives current modulated information in the primary coil that provides power. The received information includes information corresponding to a voltage or current induced by the primary coil that provides power, a unique identification code, and a manufacturer code. The system selects which primary coil to use to charge the portable device based on the received information.

Abstract: A system and method for variable power transfer in an inductive charging or power system. In accordance with an embodiment the system comprises a pad or similar base unit that contains a primary, which creates an alternating magnetic field. A receiver comprises a means for receiving the energy from the alternating magnetic field from the pad and transferring it to a mobile device, battery, or other device. In accordance with various embodiments, additional features can be incorporated into the system to provide greater power transfer efficiency, and to allow the system to be easily modified for applications that have different power requirements. These include variations in the material used to manufacture the primary and/or the receiver coils; modified circuit designs to be used on the primary and/or receiver side; and additional circuits and components that perform specialized tasks, such as mobile device or battery identification, and automatic voltage or power-setting for different devices or batteries.