Inductive power floor box applications

Abstract

An inductive power floor box assembly can be used to provide power to a portable or temporary load. The assembly can include a floor box and an inductive power transmitter. The floor box has a bottom, a wall extending from the bottom to at least partially define a first interior, and a flange extending from the wall. At least a portion of an inductive power transmitter circuit positioned in the interior of the floor box. A transmitter coil housing is connected to the flange above the interior. An inductive power transmitter coil positioned in the transmitter coil housing.

Description

INDUCTIVE POWER FLOOR BOX APPLICATIONSFIELD

[0001] Various exemplary embodiments relate to delivery of power to portable or temporary use applications.BACKGROUND

[0002] A floor box assembly can include a floor box and a cover configured to connect to the floor box. The floor box is intended to be mounted in the floor, ground, or other surface, including walls or other vertical supports in some application. Floor boxes are intended to house one or more electrical components that are accessible to a user through the cover. The electrical components can include various wiring devices such as electrical receptacles, video connections, phone connections, data connections, or other power or communication devices.

[0003] The floor box can have a variety of configurations that includes different sizes and shapes and different internal and external components. The different components can be modular to create different configurations within a single floor box. Different covers can also be used with different floor boxes. As would be understood by one of ordinary skill in the art, the floor box can be classified by the number of electrical components or gangs that can be placed into the floor box.SUMMARY

[0004] Certain implementations are directed to an inductive power system. The system utilizes a transmitter positioned in a floor box and a moveable receiver unit to provide power to one or more user devices.

[0005] Certain implementations are directed to a method of providing inductive power to a user device.

[0006] In certain configurations, the induction power system includes a power transmitter and receiver device. The power transmitter can include a power input, a transmitter control unit, and a transmitter coil. The receiver device can include a receiver coil, a receiver control unit H4and an electrical component. In certain configurations, the component can be a wiring device, such as a receptacle or other power access point, or it could be a load, such as an electrically powered device.

[0007] Various configurations include an inductive power floor box assembly. A floor box has a bottom, a wall extending from the bottom to at least partially define a first interior, and a flange extending from the wall. At least a portion of an inductive power transmitter circuit positioned in the interior of the floor box. A transmitter coil housing is connected to the flange above the interior. An inductive power transmitter coil positioned in the transmitter coil housing.

[0008] Various configurations include an inductive power floor box assembly. A floor box has a bottom, a wall extending from the bottom to at least partially define a first interior, and a flange extending from the wall. At least a portion of an inductive power transmitter circuit positioned in the interior of the floor box. A transmitter coil housing is connected to the flange above the interior. An inductive power transmittercoil positioned in the transmitter coil housing. A load bearing cover is connected to the floor box over the transmitter coil housing.

[0009] Various configurations include an inductive power floor box assembly. A floor box has a bottom, a wall extending from the bottom to at least partially define a first interior, and a flange extending from the wall. At least a portion of an inductive power transmitter circuit positioned in the interior of the floor box. A transmitter coil housing is connected to the flange above the interior. An inductive power transmitter coil positioned in the transmitter coil housing. A spacer is positioned between the transmitter coil housing and the flange.

[0010] Various configurations include an inductive power floor box assembly. A floor box has a bottom, a wall extending from the bottom to at least partially define a first interior, and a flange extending from the wall. At least a portion of an inductive power transmitter circuit positioned in the interior of the floor box. A transmitter coil housing is connected to the flange above the interior. An inductive power transmitter coil positioned in the transmitter coil housing. A support column extends from the bottom of the floor box towards the flange.

[0011] Various configurations include an inductive power floor box assembly. A floor box has a bottom, a wall extending from the bottom to at least partially define a first interior, and a flange extending from the wall. At least a portion of an inductive power transmitter circuit positioned in the interior of the floor box. A transmitter coil housing is connected to the flange above the interior. An inductive power transmitter coil positioned in the transmitter coil housing. A spring bracket is positioned in the interior to retain a hardware component connected to the transmitter coil.

[0012] Various configurations include an inductive power floor box assembly. A floor box has a bottom, a wall extending from the bottom to at least partially define a first interior, and a flange extending from the wall. At least a portion of an inductive power transmitter circuit positioned in the interior of the floor box. A transmitter coil housing is connected to the flange above the interior. An inductive power transmitter coil positioned in the transmitter coil housing. A heat sink is connected to the wall and at least partially extends through the opening.

[0013] Certain configurations are directed to a receiver housing. At least a portion of an inductive power receiver circuit positioned in the receiver housing. A receiver coil housing is connected to the receiver housing. An inductive power receiver coil positioned in the receiver coil housing.

[0014] Certain configurations are directed to a receiver housing. At least a portion of an inductive power receiver circuit positioned in the receiver housing. A receiver coil housing is connected to the receiver housing. An inductive power receiver coil positioned in the receiver coil housing. The receiver housing includes locating features configured to mate with a cover of a transmitter housing.

[0015] Various configurations include an inductive power floor box assembly having a floor box and a receiver housing. The floor box has a bottom, a wall extending from the bottom to at least partially define a first interior, and a flange extending from the wall. At least a portion of an inductive power transmitter circuit positioned in the interior of the floor box. A transmitter coil housing is connected to the flange above the interior. An inductive power transmitter coil positioned in the transmitter coil housing. At least a portion of an inductive power receiver circuit positioned in thereceiver housing. A receiver coil housing is connected to the receiver housing. An inductive power receiver coil positioned in the receiver coil housing.

[0016] Various configurations include an inductive power floor box assembly having a floor box and a receiver housing. The floor box has a bottom, a wall extending from the bottom to at least partially define a first interior, and a flange extending from the wall. At least a portion of an inductive power transmitter circuit positioned in the interior of the floor box. A transmitter coil housing is connected to the flange above the interior. An inductive power transmitter coil positioned in the transmitter coil housing. The transmitter coil housing includes a transmitter coil cover having a first set of locating features. At least a portion of an inductive power receiver circuit positioned in the receiver housing. A receiver coil housing is connected to the receiver housing. An inductive power receiver coil positioned in the receiver coil housing. The receiver coil housing includes a second set of locating features configured to align with the first set of locating features.BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The aspects and features of various exemplary embodiments will be more apparent from the description of those exemplary embodiments taken with reference to the accompanying drawings.

[0018] FIG. 1 is a schematic of an induction power transfer system.

[0019] FIG. 2 is a schematic of an induction power transmitter and receiver.

[0020] FIG. 3 is a flow chart of a method of providing induction power to a load.

[0021] FIG. 4 is a top perspective view of a floor box containing induction power transmitter components.

[0022] FIG. 5 is a top perspective view of the floor box of FIG. 4 with a transmitter coil and coil housing attached.

[0023] FIG. 6 is a top perspective view of the floor box of FIG. 5 with a load bearing cover attached.

[0024] FIG. 7 is a sectional view of the floor box of FIG. 6.

[0025] FIG. 8 a partial, bottom perspective view of the load bearing cover of FIG. 6.

[0026] FIG. 9 is a partial, sectional view of the engagement of the load baring cover with the base fasteners of FIG. 6.

[0027] FIG. 10 is a top perspective view of the floor box of FIG. 4 with a spacer attached.

[0028] FIG. 11 is a top perspective view of the floor box and load bearing cover in a floor surface.

[0029] FIG. 12 is a top perspective view of a floor box containing induction power transmitter components.

[0030] FIG. 13 is a section view of the floor box of FIG. 12.

[0031] FIG. 14 is a top view of the floor box of FIG. 12.

[0032] FIG. 15 is a perspective view of a spring bracket of FIG. 12.

[0033] FIG. 16 is a top perspective view of the floor box of FIG. 12 with a transmitter coil and coil housing attached.

[0034] FIG. 17 is a top perspective view of the floor box of FIG. 16 with a load bearing cover attached.

[0035] FIG. 18 is a partial view of the keyhole slot of the load bearing cover of FIG.17-

[0036] FIG. 19 is a bottom perspective view of the load bearing over of FIG. 17.

[0037] FIG. 20 is a partial, sectional view of the load bearing cover and floor box of FIG. 17.

[0038] FIG. 21 is a top perspective view of a load bearing cover for use with a floor box.

[0039] FIG. 22 is a partial, sectional view of the load bearing cover of FIG. 21 connected to a base.

[0040] FIG. 23 is a top perspective view of a floor box containing induction power transmitter components.

[0041] FIG. 24 is an exploded view of the floor box of FIG. 23.

[0042] FIG. 25 is a top, sectional view of the floor box of FIG. 23.

[0043] FIG. 26 is a top perspective view of a floor box containing induction power transmitter components.

[0044] FIG. 27 is a top view of the floor box of FIG. 26.

[0045] FIG. 28 is a top perspective view of the component insert of the floor box of FIG. 26.

[0046] FIG. 29 is a top perspective view of the floor box of FIG. 26 with a transmitter coil and coil housing attached.

[0047] FIG. 30 is a sectional view of the floor box and coil housing of FIG. 29.

[0048] FIG. 31 is a top perspective view of the floor box and coil housing of FIG. 29 with a load bearing cover attached.

[0049] FIG. 32 is a partial, sectional view of the floor box, coil housing, and load bearing cover of FIG. 31.

[0050] FIG, 33 is a bottom perspective view of the load bearing cover of FIG. 31.

[0051] FIG. 34 is a load bearing cover for use with a floor box.

[0052] FIG. 35 is a top perspective view of an induction power receiver unit with a receptacle opening.

[0053] FIG. 36 is a top perspective view of the induction power receiver unit of FIG. 35 with a weatherproof outlet cover.

[0054] FIG. 37 is a bottom perspective view of the induction power receiver unit of FIG. 35 with a bottom cover exploded.

[0055] FIG. 38 is a top perspective view of an induction power receiver unit with a hardwired connection.DETAILED DESCRIPTION OF EXEMPLARY EMBODIMENTS

[0056] Delivery of power to a portable or temporary load typically involves an outlet or receptacle hardwired to a mains power supply and a cord with a plug connected to a load. The plug is inserted into the receptacle to create an electrical connection as needed. Indoors in dry locations, power connections are usually made through a wall outlet or floor box. In outdoor or wet environments, power connections can require more specialized components that can withstand moisture and other hazardouselements. In all cases the user is expected to make a direct connection to the power source, potentially exposing a user to the high voltage power source.

[0057] Various implementations are directed to using inductive power supplies to provide power to users with a minimal level of risk. Inductive power supplies can utilize a power transmitter which provides power to a receiver device. Different combinations of hardware and software components can be utilized to provide inductive power transfer based on the environment and the required application. Both the transmitter and receiver components can include at least one circuit, the layout of which can vary depending on the application. One example of components used for a non-contact inductive power transfer are described in U.S. Patent No. 8,125,208, the disclosure of which is incorporated by reference. The power transmitter can be positioned in a housing, such as a floor box positioned in the floor, ground, or other surface level. These devices can work in any environment and are less impacted by rain, snow, ice, flooding, dirt or dust ingress, or the effects of other debris.

[0058] Floor boxes can be installed in any surface, including carpet, tile, raised access flooring, and concrete for indoor locations. Floor boxes can also be installed in various outdoor locations, including concrete, asphalt, dirt, stone, or other locations. When being installed in a concrete floor, a floor box can include a non-metallic temporary cover, for example made from a polymer material, although other materials can be used. The temporary cover can be releasably connected to the floor box or to a permanent cover, for example through a snap fit connection. After the floor box has been set in the floor, for example after a concrete pour, the temporary cover can be broken off or otherwise removed. The concrete can be poured up to and over a portionof the temporary cover which prevents concrete, or other flooring material, from getting into the floor box during installation. Examples of a floor box, cover assembly, and installation method are described in U.S. Patent No. 10,084,297, the disclosure of which is hereby incorporated by reference in its entirety.

[0059] FIG. 1 illustrates an exemplary schematic of an induction power transfer system 100. The induction power system 100 includes a power transmitter 102 and receiver device 104. The power transmitter 102 can include a power input 106, a transmitter control unit 108, and a transmitter coil 110. The receiver device 104 can include a receiver coil 112, a receiver control unit 114, and an electrical component 116. In certain configurations, the component 116 can be a wiring device, such as a receptacle or other power access point, or it could be a load, such as an electrically powered device.

[0060] In certain configurations, the transmitter control unit 108 receives power from a power input 106. The transmitter control unit 108 can include various components depending on the desired operation. For example, the power control unit 108 can include a power conversion circuit to convert power input 106 to another form, e.g., different frequency, phase, etc. In one example, the power input 106 is a multiphase AC power input that is converted to a single-phase AC power. In another example, the power input 106 is a direct current (DC) grid, digital electricity source, or the like. The transmitter control unit 108 provides an alternating current to the transmitter coil 110. The alternating current through the transmitter coil 110 creates an oscillating magnetic field around the transmitter coil 110. The oscillating magnetic field induces an alternating electromotive force that creates an alternating current inthe receiver coil 112. The receiver control unit 114 can also be configured to convert the received power. For example, the receiver control unit 114 can include a receiver power conversion circuit that converts the alternating current in the receiver coil 112 to one of a DC power or other forms of AC power based on the implementation of the power transfer system 100.

[0061] FIG. 2 is a block diagram of one embodiment of an induction power transfer system 200. In the illustrated example, the induction power transfer system 200 includes a power transmitter device 202 and a power receiver device 204. The power transmitter device 202 includes a power input 206, a transmitter electronic processor 208, a transmitter memory 210, a transmitter transceiver 212, a transmitter control unit 214, and a transmitter coil 216. The power receiver device 204 includes a receiver electronic processor 218, a receiver memory 220, a receiver transceiver 222, a receiver power conversion circuit 224, a receiver control unit 226, and a receiver coil 228. The power transmitter device 202 and the power receiver device 204 may include more or fewer components than those illustrated in FIG. 2 and may perform additional functions other than those described herein.

[0062] In some configurations, the transmitter electronic processor 208 is implemented as a microprocessor with separate memory, such as the transmitter memory 210. In other embodiments, the transmitter electronic processor 208 can be implemented as a microcontroller (with the memory 210 on the same chip). In other embodiments, the transmitter electronic processor 208 can be implemented using multiple processors. In addition, the transmitter electronic processor 208 can be implemented partially or entirely as, for example, a field-programmable gate array(FPGA), an application specific integrated circuit (ASIC), and the like, and the memory 210 may not be needed or may be modified, accordingly. In the example illustrated, thetransmitter memory 210 includes non-transitory, computer-readable memory that stores instructions that are received and executed by the transmitter electronic processor 208 to carry out required functionality. The transmitter memory 210 can include, for example, a program storage area and a data storage area. The program storage area and the data storage area may include combinations of different types of memory, such as read-only memory and random-access memory. The receiver electronic processor 218 and the receiver memory 220 can be implemented similar to the transmitter electronic processor 208 and the transmitter memory 210.

[0063] The transmitter transceiver 212 and the receiver transceiver 222 allow for communication between the power transmitter device 202 and the power receiver device 204. In some embodiments, the transceivers 212, 222 each include separate transmitter and receiver components. The transceivers 212, 222 can enable wireless communication between the power transmitter device 202 and the power receiver device 204. For example, the transceivers 212, 222 may comprise one or more of Bluetooth® modules, near-field communication (NFC) modules, out-of-band communication modules and the like that allow for short range wireless communication between the devices. One skilled in the art would understand that other wireless communication protocols could also be used instead of or in addition to the above-mentioned protocols consistent with the present disclosure.

[0064] The transmitter control unit 214 receives power from the power input 206.The transmitter control unit 214 can include a power conversion circuit, for example,if necessary or otherwise desired, to convert power input 206 to another form, e.g., different frequency, phase, etc. In one example, the power input 206 is a multi-phase AC power input that is converted to a single-phase AC power to be provided to the transmitter control unit 214. In one example, the power input 206 is a direct current (DC) grid, digital electricity source, or the like. The transmitter control unit 214 is controlled by the transmitter electronic processor 208 to provide an alternating current to the transmitter coil 216. The alternating current through the transmitter coil 216 creates an oscillating magnetic field around the transmitter coil 216. The oscillating magnetic field induces an alternating electromotive force that creates an alternating current in the receiver coil 228. The receiver electronic processor 218 controls the receiver control unit 226 to provide the alternating current from the receiver coil 228 to the receiver power conversion circuit 224. Receiver power conversion circuit 224 converts the alternating current in the receiver coil 228 to one of a DC power and other forms of AC power based on the implementation of the induction power transfer system 200.

[0065] In some configurations, the receiver power conversion circuit 224 converts the AC power received from the receiver coil 228 into a DC power at a power output 230. For example, although not shown in the exemplary embodiment of FIG. 2, the receiver power conversion circuit 224 may include a rectifier to convert the AC power from the receiver coil 228 to a DC power output for a load. In the illustrated embodiment of FIG. 2, the receiver power conversion circuit 224 converts the AC power received from the receiver coil 228 into a three-phase AC power at the power output 230. For example, the receiver power conversion circuit 224 may include oneor more transformers to convert the single-phase AC power from the receiver coil 228 to a three-phase AC power output to a load. In another example, the receiver power conversion circuit 224 may include an electronic-switch based circuit that alters the input to output characteristics of the AC power.

[0066] FIG. 3 is a flowchart illustrating one example method 300 for operating the induction power transfer system 200. It should be understood that the order of the steps disclosed in method 300 could vary. Additional steps may also be added to the control sequence and / or not all of the steps may be required. As illustrated in FIG. 3, the method 300 includes establishing communication between the power transmitter device 202 and the power receiver device 204 (at block 302). Communication can simply include positioning the transmitter coil 216 and the receiver coil 228 in relation to one another to allow for electrical communication through the induction power transfer. Communication could also include a wireless data communication connection such as a Bluetooth® connection, a Zigbee® connection, or the like established between the power transmitter device 202 and the power receiver device 204 to facilitate communication between the transmitter electronic processor 208 and the receiver electronic processor 218. The wireless communication between the power transmitter device 202 and the power receiver device 204 using Bluetooth® and the like is referred to as out-of-band communication. In some embodiments, an in-band communication based on modulating signals provided to the transmitter coil 216 and the receiver coil 228 may be established instead of the out-of-band communication. In these embodiments, the transmitter transceiver 212 and the receiver transceiver 222 may not be required or may be modified accordingly.

[0067] The method 300 also includes negotiating power transfer requirements between the power transmitter device 202 and the power receiver device 204 (at block 304). The transmitter electronic processor 208 and the receiver electronic processor 218 negotiate over the wireless connection established between the power transmitter device 202 and the power receiver device 204. The transmitter electronic processor 208 and the receiver electronic processor 218 negotiate to determine the power requirement, for example, the voltage, frequency, and the like for the non-contact power transfer. In one embodiment, the receiver electronic processor 218 communicates the power requirements of the power receiver device 204 to the transmitter electronic processor 208 and the transmitter electronic processor 208 controls the transmitter control unit 214 accordingly.

[0068] The method 300 also includes providing, using the transmitter control unit 214, alternating current to the transmitter coil 216 (at block 306). For example, as described above, the transmitter control unit 214 provides alternating current from the power input 206 to the transmitter coil 216. The method 300 further includes generating, using the transmitter coil 216, an oscillating magnetic field (at block 308). The alternating current flowing through the transmitter coil 216 generates an oscillating magnetic field. The method 300 also includes generating an alternating current in the receiver coil 228 (at block 310). The oscillating magnetic field induces an electromotive force that creates the alternating current in the receiver coil 228.

[0069] The method 300 also includes converting, using the receiver power conversion circuit 224, the alternating current to a desired output power (at block 312). The receiver control unit 226 provides the alternating current generated in the receivercoil 228 to the receiver power conversion circuit 224. The receiver power conversion circuit 224 converts the alternating current to a direct current, a three-phase alternating current, or the like based on the requirements of the power receiver device 204. The method 300 further includes providing, using the receiver power conversion circuit 224, the output power to a load (at block 314). The receiver power conversion circuit 224 provides the desired output at the power output 380 to a connected load.

[0070] In some configurations, the induction power transfer system 200 is used for metering and monitoring power draw. For example, the power transmitter device 202 includes one or more sensors to detect a current draw, a temperature and the like. The power transmitter device 202 uses the current draw sensor to detect and meter power draw. A power cut-off device may be provided in the power transmitter device 202 to prevent excess power draw from a power receiver device 204. In one example, the power draw is metered such that the power transmitter device 202 cuts off power output after the allotted power draw by a power receiver device 204 has been exceeded.

[0071] The power transmitter device 202 can also monitor a temperature and other parameters of the inductive power transfer system 200. The power transmitter device 202 provides statistics including, for example, temperature, power draw, information about connected loads (e.g., when a device exceeds allotted power), health of the power transmitter device 202, health of the power receiver device 204, and the like to a gateway device or a user device. The gateway device can be, for example, a server or other computing device of an entity where the non-contact separable wiring device power transfer system 200 is installed. The user device is, for example, a computer application associated with the inductive power transfer system 200. The transmittertransceiver 212 may communicate wirelessly over a communication network with the gateway device or the user device to provide the statistics. In an embodiment where the power transmitter device 202 is powered by digital electricity, the power transmitter device 202 may further communicate with the digital electricity source to control the power flow.

[0072] FIG. 4 shows an exemplary embodiment of a floor box 400 that can be used to house the associated components for an induction power transmitter. The floor box 400 can be used in a variety of different surfaces, but can be more adaptive for use in indoor locations. The floor box 400 includes a housing 402 having one or more side walls 404 at least partially defining an interior. The illustrated embodiment shows a rectangular configuration of a floor box 400 having four side walls 404. Other configurations can be used including fewer side walls, such as a single cylindrical wall, or a greater number of side walls, for example a hexagon or octagon configuration. One or more knockouts 406 are provided in the housing 402. In the illustrated embodiment, each side wall 404 includes two knockouts 406, although more or fewer knockouts 406 can also be used. The knockouts 406 can be removed by a user to attach conduits that run power or data communication lines into the interior.

[0073] An upper flange 408 can be connected to the side walls 404. The upper flange 408 helps to cover the interior. An opening is provided in the upper flange 408 to provide access to the interior. One or more tabs 410 can extend down from the opening into the interior of the housing 402. A series of apertures 412 are provided around the opening to receive fasteners.

[0074] FIG. 5 shows an example of a coil housing 420 connected to the floor box 400. The coil housing 420 includes a base 422 connected to the upper flange 408 through one or more base fasteners 424. A coil cover 426 is connected to the base 422. In one configuration, the coil cover 426 includes a central portion 428 and an outer flange 430. A mounting ring 432 can engage the outer flange 430 and one of more cover fasteners 434 can be used to secure the coil cover 426 to the base 422. The coil housing 420 can contain a transmitter coil as part of the induction power transfer system. One or more openings can be provided in the base to provide an electrical connection between a coil positioned in the coil housing 420 and the transmitter components positioned in the interior of the housing. The coil housing 420 helps position the coil above the flange 408 and allows the coil to be near an exterior support surface to be placed in communication with a receiver.

[0075] In certain configurations, a load bearing cover 440 can be placed over the coil housing 420. The load bearing cover 440 can be configured to support a receiver unit, but also to support weight of people or objects that may come in contact with the load bearing cover 440 when positioned in a support surface such as a floor or the ground. FIGS. 6-8 show an exemplary embodiment of a load bearing cover 440 having an upper surface 442 and an outer wall 444. The load bearing cover 440 is shown as having a substantially cylindrical outer profile, although other configurations, including different sizes and shapes (e.g., elliptical, triangular, rectangular, pentagonal, etc.), can be used depending on the desired profile or the configuration of the coil housing 420 that is to be covered.

[0076] The interior of the load bearing cover 440 can include an upper section 446 configured to cover the central portion 428 of the coil cover 420, a first section 448 extending from the upper section 446 and configured to cover the outer flange 430, and a second section 450 extending from the first section 448 and configured to cover an outer portion of the base 422 and the base fasteners 424. As best shown in FIG. 8, the first section 448 can include a plurality of first ribs 452 which form chambers therebetween. The second section 450 can include a plurality of second ribs 454 which form chambers therebetween. The second section 450 can also include a plurality of protrusions 456. The protrusions 456 can include a cylindrical portion and a leg offset from the cylindrical portion. As depicted in FIG. 9, the cylindrical portion of the protrusions 456 can be configured to extend into or otherwise mate with the interior of the head of the base fasteners 424 and the leg can be configured to engage an outer portion of the base fastener 424. The protrusions 456 can be spaced from an edge 458 of the second section 450 which can be configured to rest on the base 422. The first and second ribs 452, 454 and the protrusions 456 help increase the strength of the load bearing cover 440. A lower edge 460 of the load bearing cover 440 can also be configured to rest on the flange 408 to provide additional support.

[0077] In certain configurations, a spacer 470 can be used to offset the height of the coil housing 420 relative the flange 408. FIG. 10 shows an example of a spacer 470 that can be positioned on the flange 408 between the base 422 of the coil housing 420. The base fasteners 424 can extend through the base 422 and the spacer 470 to secure the spacer 470 and the base 422 to the flange 408. The spacers 470 raise the position of the coil housing 420 to accommodate for different depths in a flooring material orground area as needed. The thickness of the spacers 470 can be adjusted to accommodate for different depths, and more than one spacer 470 can be used as needed. The spacers 470 can have a width that is greater than the base 422, so that if used in conjunction with the load bearing cover 440, the lower edge 460 of the load bearing cover 440 can rest on the spacer 470.

[0078] During installation, the floor box 400 can be placed in a designated area, for example an opening formed in the ground or a floor structure. The floor box 400 can initially be empty and can include a removable, temporary cover over the opening in the flange 408. Flooring material can then be filled in around the floor box 400. For example, in a concrete floor, concrete can be poured around the floor box 400 and allowed to harden. The temporary cover can then be removed, and the interior components of the transmitter can then be installed. The coil housing 420 can then be connected, along with any necessary spacers 470, and the load bearing cover 440 installed. The installation can result in the load bearing cover 440 being positioned at or near an upper surface 480 of the resultant floor as shown in FIG. 11

[0079] FIG. 12 shows another exemplary embodiment of a floor box 500 that can be used to house the associated components for an induction power transmitter. The floor box 500 can be used in a variety of different surfaces, but can be more adaptive for use in outdoor locations. In an exemplary configuration, the floor box 500 can be made from zinc die casting, although other materials and / or manufacturing processes can be used. The floor box 500 includes a housing 502 having one or more side walls 504 at least partially defining an interior. The illustrated embodiment shows a rectangular configuration of a floor box 500 having four side walls 504. Otherconfigurations can be used including fewer side walls, such as a single rounded (e.g., cylindrical) wall, or a greater number of side walls, for example a hexagon or octagon configuration. One or more conduits 506 are provided in the housing 502. In the illustrated embodiment, conduits 506 are provided on two opposing side walls 504, although more or fewer conduits 506 can also be used. The conduits 506 can be used to run power or data communication lines into the interior.

[0080] An upper flange 508 extends from the side walls 504. The upper flange 508 can be integrally formed with the side walls 504. The upper flange 508 can have a round (e.g., circular or elliptical) outer edge 510 and an opening extending therethrough to provide access to the interior. The opening can be a square opening substantially aligned with the inner surface of the interior. A series of apertures 512 are provided around the opening to receive fasteners and bosses 514 can extend below the upper flange 508 to receive the fasteners. A gasket 516 can be positioned on the upper flange 508.

[0081] One or more trusses 518 can extend from a lower portion of the upper flange 508 to an adjacent side wall 504 of the housing 502. The illustrated embodiment shows two trusses 518 per side wall 504, although fewer or more trusses 518 can be used, and in some configurations trusses 518 on any or all of the side walls 504 can be eliminated.

[0082] One or more feet 520 can be connected to the housing 502 to provide additional stability and support when installed in the ground. The housing 502 can include one or more slots or recesses in the side walls 504 to receive the feet 520. In the illustrated embodiment, one or more recesses can be provided in each lower cornerof the housing 502 and the feet 520 can be connected by one or more fasteners to the side walls 504. The feet 520 can have at least one opening (e.g., three shown) which can receive additional fasteners such as stakes which can help secure the floor box 500.

[0083] FIGS. 13 and 14 show an exemplary configuration of the interior of the floor box 500. A first set of components 530 can be positioned on a first side of the interior and a second set of components 532 can be positioned on a second side of the interior. The first and second components 530, 532 can include various hardware and software components to facilitate the control and transmission of inductive power through one or more transmission coils. One or more features can be used to position and support the first and second components 530, 532 in the interior.

[0084] In an exemplary configuration, one or more first projections 534 can extend from a bottom 536 of the housing 502 to help position and support the first set of components 530. The first projections 534 can include a first base having a raised step and a first spine that extends at an oblique angle to the raised step. The first spine can help support and position a lower portion of the first set of components 530. One or more brackets 538 are used to connect the first set of components 530 to a side wall 504. In the illustrated configuration, two brackets 538 are used on each side of the first set of components 530. A spacer 540 can be positioned between the first set of components 530 and the side wall 504. The spacer 540 can be a thermal spacer 540 that helps to increase the heat transfer between the first set of components 530 and the side wall 504. In certain configurations the first set of components can be directly connected to the side wall 504.

[0085] A spring bracket 542 can also be used to engage the first set of components 530. As best shown in FIG. 15, the spring bracket 542 includes a cross brace 544, a transition 546, a pair of legs 548, and a foot 550 extending from each leg 548. The legs 548 extend at an oblique angle relative to the cross brace 544 to extend towards the first set of components 530 and the feet 550 can extend at an oblique angle to the legs 548. The legs 548 can act as spring members to apply a force to the first set of components 530. This helps to ensure a tighter engagement with the thermal spacer 540 that helps to increase heat transfer from the first set of components 530.

[0086] As best shown in FIGS. 13 and 14, one or more second projections 552 can extend from the bottom 534 to help position and support the second set of components 532. The second projection 552 can include a base and spine extending from the base. The spine can include a slot for slidably receiving a circuit board. A pair of second projections 552 can be used with one on each side to slidably retain the circuit board.

[0087] In certain configurations, the interior of the housing 502 can also include a support column 554. The support column 554 can be positioned in a central region of the interior. The support column 554 can be designed to allow loads from the cover to be centrally supported to reduce span and increase load rating. In the illustrated embodiment, the support column 554 is a cylindrical post positioned on a support base 556. The support base 556 extends into at least a portion of the cylindrical post. The support base 556 can have an upper section and a lower section, with the upper section extending at least partially into the support column 554 and a lower edge of the support column 554 resting on the lower section. This can provide greater support and help to minimize deflection.

[0088] FIG. 16 shows an example of a coil housing 560 connected to the floor box 500. The coil housing 560 includes a base 562 connected to the upper flange 508 through one or more base fasteners 564. Connected over the gasket 516, the coil housing 560 can seal the opening to provide a water tight enclosures.

[0089] A coil cover 566 is connected to the base 562. In one configuration, the coil cover 566 includes a central portion 568 and an outer flange 570. A mounting ring 572 can engage the outer flange 570 and one of more coil cover fasteners can be used to secure the coil cover 566 to the base 562. The coil housing 560 can contain a transmitter coil as part of the induction power transfer system. One or more openings can be provided in the base 562 to provide an electrical connection between a coil positioned in the coil housing 560 and the transmitter components 530, 532 positioned in the interior of the housing 502. The coil housing 560 helps position the coil above the flange 508 and allows the coil to be near an exterior support surface to be placed in communication with a receiver.

[0090] In certain configurations, a load bearing cover 574 can be placed over the coil housing 560. The load bearing cover 574 can be configured to support a receiver unit, but also to support weight of people or objects that may come in contact with the load bearing cover 574 when positioned in a support surface such as a floor or the ground. FIGS. 17-20 show an exemplary embodiment of a load bearing cover 574 having an upper surface and an outer wall. The load bearing cover 574 is shown as having a substantially cylindrical outer profile, although other configurations, including different sizes and shapes, can be used depending on the desired profile or the configuration of the coil housing 574 that is to be covered.

[0091] In certain configurations, the load bearing cover 574 can include a rotational locking connection. For example, as best shown in FIG. 18, one or more slots 576 can be provided in the outer wall of the load bearing cover 574. The slot 576 can house a keyhole slot 578 having a major opening and a minor opening. A first surface 580 at least partially surrounds the major opening and a second surface 582 at least partially surrounds the minor opening. The first surface 580 can be raised relative to the second surface 582 and a ramp can transition between the first surface 580 and the second surface 582. A channel 584 can provide communication between the slot 576 through to the upper surface.

[0092] The load bearing cover 574 can be place over fasteners inserted into the base 562 so that the heads of the fasteners enter the major opening of the keyhole slot. The cover 574 can then be rotated, for example by approximately 5 degrees, to lock into place. The ramp between the first and second surfaces 580, 582 can provide noticeable tactile feedback to help inform a user that the cover 574 is secured. The ramp also helps resists movement to move the cover 574 back to the open position. The channel 584 can provide access to the slot 576 for aiding in rotation with a specialized spanner tool. Grooves 586 (shown in FIG. 16) formed on the base 562 can help to show rough alignment locations of the fasteners so the user can have an idea of where to place the load bearing cover 574 for installation.

[0093] As best shown in FIGS. 19 and 20, the interior of the load bearing cover 572 can include an upper section 588 configured to cover the central portion of the coil cover 560, a first section 590 extending from the upper section 588 and configured to cover the outer flange 570, and a second section 592 extending from the first section590 and configured to cover an outer portion of the base 562 and the base fasteners 564. As best shown in FIG. 19, the first section 590 can include a plurality of first ribs 594 which form chambers therebetween. The second section 592 can include a plurality of second ribs 596 which form chambers therebetween. The second section 592 can also include a plurality of raised areas 598 to accommodate the base fasteners 564-

[0094] FIGS. 21 and 22 show another exemplary embodiment of a load bearing cover 610 that can be used with a transmission unit positioned in a floor box. The load bearing cover 610 includes an upper surface 612 and an outer wall 614. The load bearing cover 610 is shown as having a substantially cylindrical outer profile, although other configurations, including different sizes and shapes, can be used depending on the desired profile or the configuration of the coil housing 610 that is to be covered.

[0095] In certain configurations, the load bearing cover 610 can include a rotational locking connection. For example, as best shown in FIG. 21, one or more recesses 616 can be provided in the outer wall of the load bearing cover 616. An upper rim 618 can be positioned in each recess 616. The recesses 616 can house a keyhole slot 620 having a major opening and a minor opening. A first surface 622 at least partially surrounds the major opening and a second surface 624 at least partially surrounds the minor opening. The first surface 622 can be raised relative to the second surface 624 and a ramp can transition between the first surface 622 and the second surface 624.

[0096] The load bearing cover 610 can utilize a cap 630 having an upper body 632 and a projection 634 extending from the upper body 632. The projection 634 is configured to fit into the major opening of the keyhole slot 620 and a lower surface ofthe upper body 632 is designed to rest on the upper rim 618. The projection 634 can include a snap-fit connection, for example one or more cantilevered beams having one or more prongs, although other types of connections (e.g., friction fit) may be used. After the load bearing cover 610 has been placed and rotated so the fastener is in the minor opening of the keyhole slot 620, the cap 630 can be snap fit into the major opening so that the cap 630 covers and limits access to the fastener and thus helps to prevent unwanted removal of the load bearing cover 612.

[0097] FIG. 23 shows another exemplary embodiment of a floor box 700 that can be used to house the associated components for an induction power transmitter. The floor box 700 can be used in a variety of different surfaces, but can be more adaptive for use in outdoor locations. In an exemplary configuration, the floor box 700 can be made from a polymer material such as PVC. The floor box 700 includes a housing 702 having one or more side walls 704 at least partially defining an interior. The illustrated embodiment shows a rectangular configuration of a floor box 700 having four side walls 704. Other configurations can be used including fewer side walls, such as a single cylindrical wall, or a greater number of side walls, for example a hexagon or octagon configuration. One or more conduits 706 are provided in the housing 702. In the illustrated embodiment, conduits 706 are provided on two opposing side walls 704, although more or fewer conduits 706 can also be used and / or the orientation of the conduits 706 may be adjusted. The conduits 706 can be used to run power or data communication lines into the interior.

[0098] An upper flange 708 extends from the side walls 704. The upper flange 708 can be integrally formed with the side walls 704. The upper flange 708 can have acircular outer edge 710 and an opening extending therethrough to provide access to the interior. The opening can be a square opening substantially aligned with the inner surface of the interior, although openings with other shapes may be used (e.g., circular, elliptical, triangular, rectangular, etc.). A series of apertures 712 are provided around the opening to receive fasteners and bosses 714 can extend below the upper flange 708 to receive the fasteners to connect a coil housing assembly to the flange 708. In an exemplary configuration of the interior of the floor box 700, a first set of components 720 can be positioned on a first side of the interior and a second set of components 722 can be positioned on a second side of the interior.

[0099] As best shown in FIGS. 24 and 25, the floor box 700 can include a pair of heat sinks 730. The heat sinks can be made from a material having a greater thermal conductivity than the side walls 704. For example, the heat sinks 730 can be made from die cast zinc. The heat sinks 730 can include a panel 732 connected to an interior surface of one of the side walls 704 and one or more fins 734 extending outwardly through openings in the side walls 704. A gasket 736 can be positioned on the interior of the housing 702 between the panel 732 and the inner surface of the side wall 704 to provide a water tight seal for the housing 702. A pressure plate 738 can be positioned on the exterior of the side walls 704 to help distribute the load evenly and reduce or eliminates distortion of the housing 702. Fasteners 740 can extend through the pressure plate 738, the gasket 736, and into the heat sink 730 to secure the heat sink 730 to the side wall 704. The first set of components 720 can be connected to a first heat sink 730 and the second set of components 722 can be connected to a second heatsink 730 to help dissipate heat from the components 720, 722 to outside of the floor box 700.[OO1OO] FIG. 26 shows another exemplary embodiment of a floor box 800 that can be used to house the associated components for an induction power transmitter. The floor box 800 can be used in a variety of different surfaces, but can be more adaptive for use in outdoor locations. In an exemplary configuration, the floor box 800 can be made from a polymer material such as PVC. The floor box 800 includes a housing 802 having one or more side walls 804 at least partially defining an interior. The illustrated embodiment shows a rectangular configuration of a floor box 800 having four side walls 804. Other configurations can be used including fewer side walls, such as a single cylindrical or elliptic cylindrical wall, or a greater number of side walls, for example a hexagon or octagon configuration. One or more conduits 806 are provided in the housing 802. In the illustrated embodiment, conduits 806 are provided on two opposing side walls 804, although more or fewer conduits 806 can also be used and / or positioned in different orientations on the side walls 804. The conduits 806 can be used to run power or data communication lines into the interior.

[0101] An upper flange 808 extends from the side walls 804. The upper flange 808 can be integrally formed with the side walls 804. The upper flange 808 can have a circular outer edge 810 and an opening extending therethrough to provide access to the interior. The opening can be a square opening substantially aligned with the inner surface of the interior. A series of apertures 812 are provided around the opening to receive fasteners and bosses 814 can extend below the upper flange 808 to receive thefasteners to connect a coil housing assembly to the flange 808. Trusses 816 can extend below the bosses 814 and connect to the side walls 804.

[0102] In an exemplary configuration of the interior of the floor box 800, a component insert 820 can be housed in the interior. As best shown in FIGS. 27 and 28, the component insert 820 includes one or more side walls 822 at least partially defining an interior. The illustrated embodiment shows a rectangular configuration having four side walls 822. Other configurations can be used including fewer side walls, such as a single cylindrical or elliptic cylindrical wall, or a greater number of side walls, for example a hexagon or octagon configuration depending on the configuration of the floor box. The side walls 804 can be individually formed or formed in sections. For example, two sets of two side walls 804 can be formed and connected through a fastener such as a screw or rivets. The side walls 804 of the component insert 820 can be made from metal which helps with heat transfer from the components 828, 830. An upper flange 824 extends from each of the side walls 822. One or more openings 826 can be provided in the flanges 824 to receive fasteners to connect the component insert to the floor box 800, for example through an associated coil housing.

[0103] A first set of components 828 can be positioned on a first side of the component insert 820 and a second set of components 830 can be positioned on a second side of the component insert 820. The components 828, 830 can be connected to the side walls 822 of the component insert 820. One or more thermal spacers can be positioned between the components 828, 830 and the side walls 822 to increase heat transfer. Use of the component insert 820 can allow the transmitter components to be prepackaged separately from the floor box 800. This can allow of easierinstallation into the floor box 800 and for installation into floor boxes of other configurations.

[0104] The components 828, 830 can also be pre-wired with connectors (pigtails, splices, etc.) to allow for easier installation and daisy chain wiring to other units. In certain configurations, the component insert 820 can be open at the bottom but sealed to hold air and keep water out. In this application, the floor box 800 would not need to be a waterproof enclosure because the enclosure would act like a diving bell, keeping the electronics dry even if the primary enclosure filled with water.

[0105] FIGS. 29 and 30 shows an example of a coil housing 840 connected to the floor box 800. The coil housing 840 includes a base 842 connected to the upper flange 808 through one or more base fasteners. A coil cover 846 is connected to the base 842. In one configuration, the coil cover 846 includes a central portion 848 and an outer flange 850. A mounting ring 852 can engage the outer flange 850 and one of more coil cover fasteners can be used to secure the coil cover 846 to the base 842. Fasteners 854 can be connected to the base 842 for attachment of an outer cover. Notches 856 can be provided in the base to help with alignment to the fasteners 854.

[0106] The coil housing 840 can contain a transmitter coil as part of the induction power transfer system. One or more openings can be provided in the base 842 to provide an electrical connection between a coil positioned in the coil housing 840 and the transmitter components 828, 830 positioned in the interior of the housing 802. The coil housing 840 helps position the coil above the flange 808 and allows the coil to be near an exterior support surface to be placed in communication with a receiver.

[0107] In certain configurations, a load bearing cover 860 can be placed over the coil housing 840. The load bearing cover 860 can be configured to support a receiver unit, but also to support weight of people or objects that may come in contact with the load bearing cover 860 when positioned in a support surface such as a floor or the ground. FIGS. 31-33 show an exemplary embodiment of a load bearing cover 860 having an upper surface and an outer wall. The load bearing cover 860 is shown as having a substantially cylindrical outer profile, although other configurations, including different sizes and shapes, can be used depending on the desired profile or the configuration of the coil housing 840 that is to be covered.

[0108] In certain configurations, the load bearing cover 860 can include a rotational locking connection. For example, as best shown in FIGS. 31 and 32, one or more slots 862 can be provided in the outer wall of the load bearing cover 860. The slot 862 can house a keyhole slot 864 having a major opening and a minor opening. A first surface at least partially surrounds the major opening and a second surface at least partially surrounds the minor opening. The first surface can be raised relative to the second surface and a ramp can transition between the first surface and the second surface.

[0109] The load bearing cover 860 can be place over fasteners 854 inserted into the base 842 so that the heads of the fasteners enter the major opening of the keyhole slot. The cover 860 can then be rotated, for example by approximately 5 degrees to lock into place. The ramp between the first and second surfaces can provide noticeable tactile feedback to help inform a user that the cover 860 is secure and the ramp also helps resists movement to move the cover 860 back to the open position.

[0110] The load bearing cover 86o can utilize a cap 866 having an upper body 868 and a projection 870 extending from the upper body 868. The projection is configured to fit into the major opening of the keyhole slot 864 and a lower surface of the upper body 868 is designed to rest on an upper rim recessed into the load bearing cover 860. The projection 870 can include a snap-fit connection, for example one or more cantilevered beams having one or more prongs. After the load bearing cover 860 has been placed and rotated so the fastener is in the minor opening of the keyhole slot 864, the cap 866 can be snap fit into the major opening so that the cap 866 covers and limits access to the fastener and thus helps to prevent unwanted removal of the load bearing cover 860 and prevents undesired rotation.

[0111] As best shown in FIG. 33, the interior of the load bearing cover 860 can include an upper section 872 configured to cover the central portion of the coil cover 840, a first section 874 extending from the upper section 840 and configured to cover the outer flange 850, and a second section 876 extending from the first section 874 and configured to cover an outer portion of the base 842 and the base fasteners. The first section 874 can include a plurality of first ribs 878 which form chambers therebetween. The second section 874 can include a plurality of second ribs 880 which form chambers therebetween. The second section 876 can also include a plurality of raised areas 882 to accommodate the base fasteners.

[0112] FIG. 34 shows a configuration of a load bearing cover 890 that utilizes locating features 892. The load bearing cover 890 is shown as having a substantially cylindrical outer profile, although other configurations, including different sizes andshapes, can be used depending on the desired profile or the configuration of the coil housing that is to be covered.

[0113] The locating features 892 can be recessed from the upper surface 894 and can have an open outer end 896 facing the exterior of the cover 890 and a closed inner end 898 positioned closer to the center of the cover 890. In the illustrated embodiment, the open outer end 896 is wider than the closed inner end 898, providing a trapezoid configuration. Different configurations of recesses, including different shapes and sizes can be used depending on the application. In certain configurations, a rounded transition can be provided between the recess 892 and the upper surface 894 of the cover 890.

[0114] A corresponding receiver unit can include complimentary protrusions designed to inserted into, mate, or otherwise engage the recesses 892 to provide proper positioning of the receiver and limit movement (either rotational or translational movement) between the receiver and the transmitter. The orientation can also be reversed so that protrusions are provided on the cover 890 and recesses are provided on the receiver unit.

[0115] The interior of the load bearing cover 890 can include any of the structural elements shown and described herein. Other components of the disclosed covers, such as the rotational locking elements, can also be incorporated into the load bearing cover 890.

[0116] FIG. 35 shows an exemplary embodiment of a receiver unit 900 that can be used to house the associated components for an induction power receiver. The receiver unit 900 includes a housing 902 having a substantially curvilinear outer wall 904 withflat base 906. An upper portion of the housing can include one or more receptacle openings housing a receptacle 908. In the illustrated configuration, two single gang receptacles 908 are used and positioned on opposite sides of the housing 902. Other configurations can utilize fewer or more receptacle openings and can utilize different sized receptacle openings to receive multi-gang outlets. Additionally, although a standard 3-prong outlet is shown, different types of receptacles, including USB outlets, and wireless charging outlets can also be used.

[0117] A handle 910 can extend from the top of the housing 902. The handle can be connected to a hinge 912 so that the handle 910 can be pivoted relative to the housing 902. The handle 910 can assist a user in moving and placing the receiver unit 900 at a desired location for a desired period of time. This allows the receiver unit 900 to be deployed in different locations, removed, and stored as needed or desired.

[0118] FIG. 36 shows an exemplary configuration that utilizes weatherproof outlet covers 914 over the receptacle openings in the housing 902. These can be used in outdoor applications to prevent ingress of water through the outlet. Other types of outlet covers, including various weatherproof in-use covers, can also be used.

[0119] FIG. 37 shows an example of a coil housing 920 connected to the floor box 900. The coil housing 920 includes a base 922 connected to the housing 902 through one or more base fasteners. A coil cover 924 is connected to the base 922. In one configuration, the coil cover 924 includes a central portion 926 and an outer flange 928. A mounting ring 930 can engage the outer flange 928 and one of more coil cover fasteners can be used to secure the coil cover 924 to the base 922.

[0120] A cover 932 can be connected to the housing 902 over the coil housing 920. The interior of the cover 932 can include and of the structural elements shown and described herein. Other components of the disclosed covers, such as the rotational locking elements, can also be incorporated into the cover 932. The cover 932 can also include features to position the receiver 900 on a transmitter. For example, the cover 932 can include protrusions or other mating features to correspond to the recesses 892 in the load bearing cover 890 shown in FIG. 34. Other alignment or securement features, for example visual indicators or magnets can also be used. Internal components associated with the receiver and transmitter components can also be used to indicate alignment, for example through an indicator such as a light emitting diode, audio output, or other signaling device.

[0121] The coil housing 920 can contain a receiver coil as part of the induction power transfer system. One or more openings can be provided in the base 922 to provide an electrical connection between a coil positioned in the coil housing 920 and receiver components positioned in the interior of the housing 902. The receiver components can be electrically connected to the receptacles 908. In this way, power can be transferred from a transmitter unit to the receiver unit and provided to a user through a receptacle 908.

[0122] FIG. 38 shows and exemplary embodiment of a hardwired receiver unit 950 that can be used to house the associated components for an induction power receiver. The receiver unit 950 includes a housing 952 having a substantially curvilinear outer wall 954 with flat base 956. An upper portion of the housing 952 can include one or more wired connections 958. The hardwired connection can be connected to anexternal load through the conductor 960. In some configurations, the conductor 960 can be connected to a retractable reel so that the receiver unit 950 can be spooled out to provide power at a certain distance as needed.

[0123] Other configurations of the transceivers and receiver units shown and described herein can also be used, including wall mounted units, mobile carts, and batter charging units.

[0124] The foregoing detailed description of the certain exemplary embodiments has been provided for the purpose of explaining the general principles and practical application, thereby enabling others skilled in the art to understand the disclosure for various embodiments and with various modifications as are suited to the particular use contemplated. This description is not necessarily intended to be exhaustive or to limit the disclosure to the exemplary embodiments disclosed. Any of the embodiments and / or elements disclosed herein may be combined with one another to form various additional embodiments not specifically disclosed. Accordingly, additional embodiments are possible and are intended to be encompassed within this specification and the scope of the appended claims. The specification describes specific examples to accomplish a more general goal that may be accomplished in another way.

[0125] As used in this application, the terms “front,” “rear,” “upper,” “lower,” “upwardly,” “downwardly,” and other orientational descriptors are intended to facilitate the description of the exemplary embodiments of the present disclosure, and are not intended to limit the structure of the exemplary embodiments of the present disclosure to any particular position or orientation. Terms of degree, such as“substantially” or “approximately” are understood by those of ordinary skill to refer to reasonable ranges outside of the given value, for example, general tolerances associated with manufacturing, assembly, and use of the described embodiments. Unless specified or limited otherwise, the terms “mounted,” “connected,” “supported,” and “coupled” and variations thereof are used broadly and encompass both direct and indirect mountings, connections, supports, and couplings.

[0126] Functionality described herein may be implemented by any combination of hardware, software, or firmware. Functionality described herein as being performed by one component may be performed by multiple components in a distributed manner. Likewise, functionality performed by multiple components may be consolidated and performed by a single component. Similarly, a component described as performing particular functionality may also perform additional functionality not described herein. For example, a device or structure that is “configured” in a certain way is configured in at least that way but may also be configured in ways that are not explicitly listed.

[0127] Certain electrical components are generally shown and described in terms of their functions or end results as it would be understood by one of ordinary skill viewing this disclosure that the exact structure, connections, and components can be varied to achieve the desired results. In addition, certain implementation may include hardware, software, and electronic components or modules that, for purposes of discussion, may be illustrated and described as if most of the components were implemented solely in hardware. However, one of ordinary skill in the art, and based on a reading of this disclosure would recognize that in certain configurations theelectronic-based aspects may be implemented in software (e.g., stored on non- transitory computer-readable medium) executable by one or more processing units, such as any combination of one or more of a general-purpose processor, microprocessor, DSP, FPGA, application specific integrated circuits (“ASICs”), and / or other programmable logic device.. As such, it should be noted that a plurality of hardware and software-based devices, as well as a plurality of different structural components, may be utilized to implement the embodiments. For example, “servers,” “computing devices,” “controllers,” “processors,” etc., described in the specification can include one or more processing units, one or more computer-readable medium modules, one or more input / output interfaces, and various connections (e.g., a system bus) connecting the components.

Claims

What is Claimed:

1. An inductive power floor box assembly comprising: a floor box having a bottom, a wall extending from the bottom to at least partially define a first interior, and a flange extending from the wall; at least a portion of an inductive power transmitter circuit positioned in the interior of the floor box; a transmitter coil housing connected to the flange above the interior; and an inductive power transmitter coil positioned in the transmitter coil housing.

2. The inductive power floor box assembly of claim 1, wherein the transmitter coil housing includes a coil cover connected to a base.

3. The inductive power floor box assembly of claim 1, further comprising a load bearing cover connected to the floor box over the transmitter coil housing.

4. The inductive power floor box assembly of claim 3, wherein the load bearing cover includes an anti-rotational feature to limit rotation of the load bearing cover relative to the coil housing.

5. The inductive power floor box assembly of claim 4, wherein the anti-rotational feature includes a projection configured to mate with a fastener.

6. The inductive power floor box assembly of claim 3, wherein the load bearing cover includes a keyhole slot configured to mate with a fastener connecting the transmitter coil housing to the floor box.

7. The inductive power floor box assembly of claim 6, further comprising a plug configured to mate with the keyhole slot to limit rotation of the load bearing cover relative to the transmitter coil housing.

8. The inductive power floor box assembly of claim 7, wherein the plug includes a snap-fit connector.

9. The inductive power floor box assembly of claim 1, wherein a spacer is positioned between the transmitter coil housing and the flange.

10. The inductive power floor box assembly of claim 1, wherein a support column extends from the bottom of the floor box towards the flange.

11. The inductive power floor box assembly of claim 1, wherein a spring bracket is positioned in the interior to retain a hardware component connected to the transmitter coil.

12. The inductive power floor box assembly of claim 1, wherein the housing includes an opening in the wall and wherein a heat sink is connected to the wall and at least partially extends through the opening.

13. The inductive power floor box assembly of claim 12, wherein the heat sink includes a panel positioned in the interior and a heat fin extending to an exterior of the floor box.

14. The inductive power floor box assembly of claim 12, wherein a pressure plate is connected to the wall around the opening.

15. The inductive power floor box assembly of claim 1, wherein the transmitter circuit is connected to a transmitter component insert removably positioned in the housing.

16. The inductive power floor box assembly of claim 15, wherein the transmitter component insert is connected to the transmitter coil housing through one or more fasteners.17- The inductive power floor box assembly of claim 3, wherein the load bearing cover includes a locating feature.

18. The inductive power floor box assembly of claim 17, wherein the locating feature includes a recess in an outer surface of the load bearing cover.

19. An inductive power floor box assembly comprising: a floor box having a bottom, a wall extending from the bottom to at least partially define a first interior, and a flange extending from the wall; at least a portion of an inductive power transmitter circuit positioned in the interior of the floor box; a coil housing connected to the flange above the interior; an inductive power transmitter coil positioned in the coil housing; a receiver housing; at least a portion of an inductive power receiver circuit positioned in the receiver housing; a receiver coil housing connected to the receiver housing; and an inductive power receiver coil positioned in the receiver coil housing.20.The inductive power floor box assembly of claim 19, wherein the transmitter coil housing includes a transmitter coil cover connected to a transmitter base.

21. The inductive power floor box assembly of claim 19, further comprising a load bearing cover connected to the floor box over the transmitter coil housing.

22. The inductive power floor box assembly of claim 19, wherein the load bearing cover includes a first locating feature.

23. The inductive power floor box assembly of claim 22, wherein the locating feature includes a recess in an outer surface of the load bearing cover.

24. The inductive power floor box assembly of claim 2, wherein the receiver housing has a second set of locating features configured to align with the first set of locating features.

25. The inductive power floor box assembly of claim 19, wherein a receptacle is at least partially positioned in the receiver housing and connected to the receiver coil.

26. The inductive power floor box assembly of claim 19, wherein a weatherproof outlet cover is connected to the receiver housing.

27. The inductive power floor box assembly of claim 19, wherein a movable handle is connected to the receiver housing.

28. The inductive power floor box assembly of claim 19, wherein the receiver coil housing includes a receiver coil cover connected to a receiver base.

29. The inductive power floor box assembly of claim 19, wherein a wired connection is connected to the receiver housing.

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