Abstract: Devices, systems, and techniques are described to detect when a power transmitting and receiving system is in an inefficient position, which may cause a thermal response that less desirable than a more efficient position. The system may power transmitting device configured to wirelessly transfer electromagnetic energy to a power receiving device. Processing circuitry of the system may compute a target output power deliverable by the power transmitting device for a first duration and control the power transmitting device to output the target output power based in part on a heat limit. The processing circuitry may further calculate an energy transfer efficiency to the power receiving unit, update an adjustment factor based on the calculated energy transfer efficiency, and apply the adjustment factor to the heat limit for a subsequent duration.

Abstract: A system that includes a power transmitting antenna (124) with a coiled conductor defined by a first axis and a second axis perpendicular to the first axis, where a single plane comprises the first axis and the second axis. The system includes a support layer (140, 142) comprising: a substantially planar top surface and a substantially planar bottom surface opposite the substantially planar top surface arranged parallel to the plane. The support layer also comprises a material with a predetermined resiliency. The support layer is configured to support a mass of a user and maintain a predetermined spacing between the plane of the power transmitting antenna and the user during compression of the material from the mass of the user.

Abstract: A male adaptor device is disclosed that is designed for connecting a female receptacle to a wall receptacle. The male adaptor device comprises a housing unit that encases a two-pronged male plug and a three-pronged male plug, wherein the two-pronged male plug and the three-pronged male plug are in electrical communication with one another. The two-pronged male plug is typically secured to and recessed in a first end of the housing unit. Further, the three-pronged male plug is typically secured to a second end of the housing unit. The male adaptor device also comprises a cap utilized to cover the three-pronged male plug in the second end of the housing unit. The male adaptor device further comprises an on/off power switch and a female receptacle positioned on an outside surface of the housing unit.