The assignee for this patent, patent number 8629651, is
Reporters obtained the following quote from the background information supplied by the inventors: "The present invention is directed to devices and methods to transfer power wirelessly to other devices and, more particularly, to such devices and methods that are capable of being self-powered, for example, by one or more batteries.
"Wireless power transmission, such as, by magnetic coil induction, is used in a variety of applications to charge products including, but not limited to, electric-powered transportation carts, power tools, and cooking appliances. Wireless power chargers for mobile devices have also recently entered the market. In one example, these chargers use a charging mat that must be plugged into an electrical wall socket to transmit power wirelessly. Generally, the mobile device, such as, a cell phone or smart phone, is provided with a separate cover and battery connector, in addition to the usual device structures. When charging is to be undertaken, the separate cover is coupled to the battery via the battery connector. The user thereafter places the device onto the charging mat and the mat is energized. When the device is placed in the proper location on the charging mat, a receiver in the cover receives the wirelessly transmitted power and the power is delivered to the device battery through the battery connector to charge the mobile device.
"Various drawbacks have been identified with prior wireless power chargers. For example, such chargers lack portability because they are generally large and bulky and are not easily placed in a user's pocket, purse, briefcase, etc. Further, such chargers require a connection to an external power source, e.g., a connection to an
"Further, the use of a separate cover and battery connector to charge a device may be considered undesirable because of the need to remove any existing cover from the device and replace the cover with the separate cover and battery connector, which, in many cases, does not adequately protect the mobile device if the device is dropped."
In addition to obtaining background information on this patent, VerticalNews editors also obtained the inventors' summary information for this patent: "In one embodiment, a wireless charging device includes a charging battery, a transmitter coupled to the charging battery, and a controller coupled to the charging battery and the transmitter. The controller is configured to direct power from the charging battery to the transmitter and wirelessly transmit the power to a receiver. The wireless charging device also includes a housing, wherein the charging battery, the transmitter, and the controller are disposed at least partly within the housing.
"In another embodiment, a wireless charging system includes a wireless charger having a first battery, a transmitter coupled to the first battery, and a first controller coupled to the first battery and the transmitter. The first battery, the transmitter, and the first controller are further disposed within a housing. The wireless charging system further includes a second battery and a receiver coupled to the second battery. The first controller is configured to direct power from the first battery to the transmitter and wirelessly transmit the power to the receiver. The receiver receives the wirelessly transmitted power to charge the second battery.
"In yet another embodiment, a method of wirelessly charging a device battery, includes the steps of providing a wireless charger that includes an internal power supply and a transmitter and directing power from the internal power supply to the transmitter. The method further includes the steps of wirelessly transmitting power from the transmitter, receiving the wirelessly transmitted power at a receiver associated with a device, and directing the received power to operate the device."
For more information, see this patent: Guccione, Darren S.; Lurey, Craig B.; Aoraha, Lourans. Portable Wireless Charging Device. U.S. Patent Number 8629651, filed
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