Patent Application
20210207420
The present invention is directed to exterior and interior doors for residential or commercial buildings, such as for a home, apartment, condominium, hotel room or business, and more particularly to a door system comprising a prewired door provided with integrated electric devices plugged into or otherwise electrically connected to prewired receptacles, and sources of low- and/or high-voltage electrical power in order to provide power that may be used to operate the integrated electric devices.
Typical existing exterior and interior doors for residential or commercial buildings may have a number of electric devices (or components) mounted to the doors in order to provide desired functions, such as electronic access control, door state feedback, an entry camera and audio communication, an electric powered door latch, an electric powered door lock, etc. Also, the market for exterior and interior doors has seen an increasing adoption of additional electric devices, including video doorbells, smart locks, LED lighting, smart glass, electromechanical door closers, wireless connectivity electronics, etc. Each of these discrete electric devices is an add-on to an existing door, functions with the existing door construction, and is powered separately with at least one battery that needs periodic replacement. Should the battery not be replaced, then the electric device will not operate.
Current electric devices are mounted to exterior and interior doors in a manner that can be unattractive and unpleasant to look at. They typically each have either one or more rechargeable battery packs or at least one non-rechargeable battery that must periodically be changed and have some type of weatherable housing.
While the commercial market, e.g. multi-tenant and mixed-use housing, hospitality, office, etc., has developed electrified door entry systems with electric strikes and door controller technologies, adoption of such devices into the residential market has been limited. Existing residential door construction techniques focus on stile and rail construction, and have not seen integration of power systems, power management systems or integration of electric devices.
Therefore, the need exists for a door designed for integration of electric devices into the door through plugs and other connection devices, with power run to the door so electric devices can function with the power managed by a control system so that the devices may be easily integrated into and powered from a central power supply without adversely impacting structural integrity, insulation and/or acoustic performance, energy efficiency, and aesthetics of the door. Thus, improvements that may enhance performance and cost of door systems with electric devices are possible.
According to a first aspect of the present invention, there is provided a door system. The door system comprises a door frame adapted to be mounted within an opening, a door pivotally attached to the door frame, a power converter such as an AC/DC converter configured to be electrically connected to an AC power unit operably associated with the door system, a slot in the door, a pre-wired receptacle disposed in the slot, and a DC electric device removably disposed in the pre-wired receptacle and electrically connected to the AC/DC converter through the electrical connector of the pre-wired receptacle. The pre-wired receptacle comprises an electrical connector electrically connected the AC/DC converter.
According to a second aspect of the present invention, there is provided an entryway. The entryway comprises a door frame within an opening, a door pivotally attached to the door frame, an AC power supply operably associated with the door frame, a power converter such as an AC/DC converter operably associated with the door frame and electrically connected to the AC power supply, a DC power distribution system mounted to the door or door frame and electrically connected to the AC/DC converter, a plurality of DC electric devices mounted to the door or door frame and electrically connected to the DC power distribution system, a slot in the door, and a pre-wired receptacle disposed in the slot, the pre-wired receptacle comprising an electrical connector electrically connected to the DC power distribution system. At least one of the DC electric devices is removably mounted in the pre-wired receptacle and electrically connected to the AC/DC converter through the electrical connector of the pre-wired receptacle.
Other aspects of the invention, including apparatus, devices, methods, and the like which constitute parts of the invention, will become more apparent upon reading the following detailed description of the exemplary embodiments.
The accompanying drawings are incorporated in and constitute a part of the specification. The drawings, together with the general description given above and the detailed description of the exemplary embodiments and methods given below, serve to explain the principles of the invention. In such drawings:
Reference will now be made in detail to the exemplary embodiments and exemplary methods as illustrated in the accompanying drawings, in which like reference characters designate like or corresponding parts throughout the drawings. It should be noted, however, that the invention in its broader aspects is not necessarily limited to the specific details, representative materials and methods, and illustrative examples shown and described in connection with the exemplary embodiments and exemplary methods.
This description of exemplary embodiments is intended to be read in connection with the accompanying drawings, which are to be considered part of the entire written description. In the description, relative terms such as “horizontal,” “vertical,” “front,” “rear,” “upper”, “lower”, “top” and “bottom” as well as derivatives thereof (e.g., “horizontally,” “vertically,” “downwardly,” “upwardly,” etc.) should be construed to refer to the orientation as then described or as shown in the drawing figure under discussion and to the orientation relative to a vehicle body. These relative terms are for convenience of description and normally are not intended to require a particular orientation. Terms concerning attachments, coupling and the like, such as “connected” and “interconnected,” refer to a relationship wherein structures are secured or attached to one another either directly or indirectly through intervening structures, as well as both movable or rigid attachments or relationships, unless expressly described otherwise. The term “operatively connected” is such an attachment, coupling or connection that allows the pertinent structures to operate as intended by virtue of that relationship. The term “integral” (or “unitary”) relates to a part made as a single part, or a part made of separate components fixedly (i.e., non-moveably) connected together. Additionally, the word “a” and “an” as used in the claims means “at least one” and the word “two” as used in the claims means “at least two”.
The door frame 12 includes first and second parallel, spaced apart vertically extending jamb members 121, 122 and a horizontally extending upper jamb rail member or header 12c that connects upper ends of the first and second jamb members 121, 122. Those skilled in the art recognize that lower ends of the jamb members 121, 122 may be interconnected through a threshold 12t. The at least one hinge 161 pivotally attaches the door 14 to the first jamb member 121. Typically, at least two hinges 161 and 162 are provided to secure the door 14 to the first jamb member 121. Preferably, as best shown in
The door 14 includes a rectangular inner door frame 20, an exterior door skin (or facing) 23, and an interior door skin (or facing) 24 secured to opposite sides of the inner door frame 20, as best shown in
The inner door frame 20 includes a pair of parallel, spaced apart horizontally extending top and bottom rails 211 and 212, respectively, and a pair of parallel, spaced apart vertically extending first and second stiles 221 and 222, respectively, typically manufactured from wood or an engineered wood, such as a laminated veneer lumber (LVL). The top and bottom rails 211 and 212 horizontally extend between the first and second stiles 221and 222. Moreover, the top and bottom rails 211 and 2122 may be fixedly secured to the first and second stiles 221 and 222, such as through adhesive or mechanical fasteners. The inner door frame 20 further may include a mid-rail. The mid-rail extends horizontally and is spaced apart from the top and bottom rails 211 and 212, respectively, and is typically also manufactured from wood or an engineered wood, such as a laminated veneer lumber (LVL). Moreover, the mid-rail may be fixedly secured to the first and second stiles 221 and 222. The hinges 16 are secured to the first stile 221, which defines a hinge stile of the inner door frame 20.
The inner door frame 20 and the exterior and interior door skins 23, 24 of a typical door 14 surround an interior cavity, which may be hollow or may be filled with, for example, corrugated pads, foam insulation, or other core materials, if desired. Thus, the door 14 may include a core 15 disposed within the inner door frame 20 between the exterior and interior door skins 23 and 24. The core 15 may be formed from foam insulation, such as polyurethane foam material, cellulosic material and binder resin, corrugated pads, etc.
The door system 10, according to the first exemplary embodiment, includes a number of DC (i.e., direct current) electric components (devices) mounted to the door 14 of the door system 10 to provide functions, such as electronic access control, door state feedback, entry camera and audio/video communication, etc. Specifically, the electric devices that may be mounted to the door 14 of the door system 10 include, but are not limited to, an electric powered door latch 30, a video doorbell 361, a digital camera 362, a threshold LED light 363 and a hallway illumination light 364 with a motion detector (or motion sensor) or a proximity sensor 62 mounted to the frame assembly 12, as best illustrated in
The DC electric devices 361-364 typically are low-voltage DC electric devices operated by low-voltage DC electrical power. Low voltage direct current (DC) is known in the art as 50 volts (V) or less. Common low voltages are 5 V, 12 V, 24 V, and 48 V. Low voltage is normally used for doorbells, video doorbells, garage door opener controls, heating and cooling thermostats, alarm system sensors and controls, outdoor ground lighting, household and automobile batteries. Many DC electric devices operate at 5 V DC. Low voltage (when the source is operating properly), such as 5 V DC, will not provide a shock from contact. However, a high current, low voltage short circuit (automobile battery) can cause an arc flash and possible burns.
It should be understood that the door system 10 according to the present invention may include other electric devices, as there are a number of electric devices marketed to be mounted to doors and provide functions such as electronic access control, door state feedback, entry camera and communication, etc. In the interest of simplicity, the following discussion will sometimes use a reference numeral without a subscript numeral to designate an entire group of the electric devices. For example, the reference numeral 36 will be sometimes used when generically referring to the electric devices 361-364.
During installation of the digital camera 362, the exterior door facing 23 is drilled at a predetermined place to create an opening in the door facing 23 and the core 15 in which the camera 362 may be positioned, for exposing the lens of the digital camera 362 and having the camera 362 observe a field in front of the door system 10. The digital camera 362 may be fixed to the exterior door facing 23 by a bezel (not shown) when the digital camera 362 is received in the door 14. The camera 362 additionally may be mechanically secured within the opening in the door 14, such as through a barbed clip or the like extending from the camera 362 and engaging the interior surface of the door facing 23. Moreover, an exterior bezel around camera 362 prevents humidity, moisture, water or rain penetration inside the door 14. Additionally, the bezel makes unintended removal or disablement of camera 362 more difficult by preventing access to the interior of the door 14.
As best illustrated in
Moreover, the door system 10 further comprises an electric door operator (powered door closer) 52 associated with the frame assembly 12 and connected to the door 14, as best shown in
As illustrated in
The AC distribution unit 46 preferably is located in a pocket (or slot) 47 machined or otherwise formed into the first jamb member 121 of the door frame 12, which is adjacent to the hinges 16 and the first stile of the door frame 20, i.e., adjacent to the hinge side 14H of the door panel 14. Alternatively, the AC distribution unit 46 may be located in a pocket (or slot) machined or otherwise formed into the upper jamb rail member header 12c of the frame assembly 12. Alternatively, the AC distribution unit 46 may be disposed outside the door assembly 11, such as at the wall adjacent the frame 12. The AC distribution unit 46 is electrically connected to the 120 (or 115) V AC power unit 42 installed during home construction and located adjacent the door system 10. The AC distribution unit 46 also is electrically coupled to the low voltage AC to DC (AC/DC) converter 40. In this way, the 120 V AC power is distributed by the AC distribution unit 46 to the low voltage AC/DC converter 40 mounted in the door frame 12, and to at least one other electric device mounted into or on the frame assembly 12, such as the electric door operator 52, through a high-voltage supply wire 45, shown in
The AC/DC converter 40 is electrically connected to the door 14 through an electric power transfer device. A low voltage supply electrical wire(s) 44 runs from the low voltage AC/DC converter 40 to the electric power transfer device, such as one of the hinges 161, 162, 163. Specifically, the low voltage supply electrical wire(s) 44 runs to and through the hinge 161 disposed usually in the middle of the first jamb member 121 of the door frame 12 and provides an electric powered (or electric transfer) hinge that conducts the low voltage electrical power therethrough. The low voltage supply electrical wire(s) 44 transfers electrical power across or through the electric powered hinge 161. Exemplary electrical hinges are disclosed in U.S. Pat. Nos. 3,860,312, 3,857,625, 3,842,386, 3,838,234, 3,355,695, 1,744,040, 61/5,209, 61/2,192 and US published patent application No. 2017/0306674, 2014/0213073, 2014/0001880, 2012/0073083, the complete disclosures of which are incorporated herein by reference.
Alternatively, an electric power transfer device, such as provided by an armored electrical cable, may be used instead of the hinges 161, 162, 163 to transfer low voltage electrical power from the door frame 12 to the pivotable door 14. The low voltage supply electrical wire(s) 44 may pass from the low voltage AC/DC converter 40 in the first jamb member 121 of the door frame 12 to the pivotable door 14 without using the electric powered hinge, i.e., bypassing any of the door hinges 161, 162, 163. Exemplary electric power transfer devices are disclosed in U.S. Pat. Nos. 3,848,361, 4,445,299, 6,350,956, 6,812,407, 8,448,382, 8,505,169 and 9,825,443, the complete disclosures of which are incorporated herein by reference. Low voltage DC power is supplied to door 14 in order to minimize the possibility of electrical shock to a user. Further, the electric devices 36 typically are battery operated and thus operate on DC current at relatively low voltages, typically 5 V DC.
The supply electrical wire(s) 44 is connected to the powered hinge 161 on the hinge side 14H of the door 14 and preferably runs through a horizontal supply channel 27 to a DC power distribution system, such as provided by an electrical distribution block 48, located in or adjacent to the vertical supply passage 25 on the latch side 14L of the door 14. The DC power distribution system 48 transmits low voltage DC power, data, electric signals, or a combination thereof. According to the first exemplary embodiment, the DC power distribution system 48 is disposed in a pocket (or slot) machined or otherwise formed in the inner door frame 20. Electric power can be delivered from the DC power distribution system 48 to the electric devices 361 and 362 that are mounted to the door 14, specifically into the latch stile 222.
In the event the electric devices 36 have connectors for connection to the DC power distribution system 48, the connectors may have a flange or some other unique mechanical identifier to mate with a complementary receptacle in order to identify or designate the connector and thus its electric device 36 as approved for use with the door system 11. Alternatively, the electric devices 36 may have an electronic signature or some other electrical identifier to assure that the electric device 36 is approved for installation. A software handshake is another verification mechanism that may be utilized for electric devices 36.
Low-voltage DC electrical power is delivered from the power distribution system 48 to the electric powered door latch 30 and the electric devices 361-363, and other low power DC electric devices, that are mounted to the door 14. Moreover, the low-voltage DC electrical power is delivered from the low-voltage AC/DC converter 40 directly to the low-voltage electric device 364 that is mounted to the frame assembly 12 by the low-voltage supply wire 44 so as to bypass the DC power distribution system 48, as shown in
A plurality of connecting electrical wires 54 electrically connect the DC power distribution system 48 to the electric powered door latch 30, and the electric powered devices 361 and 362. Alternatively, electrical connectors may be pre-mounted in the door 14 at desired locations, so that the electric devices 36 may simply be inserted and plugged into electrical connectors. A standard flange size and plug location relative to the location of a flange of the electric devices 36 may be set, so that suppliers may supply electric devices that are easily plugged into the door 14. The supply electrical wire(s) 44 and the plurality of the connecting electrical wires 54 together define an electrical wire system, which is disposed within the door 14 and is electrically connected to the AC/DC converter 40 and to the DC electric devices 30 and 36. The electrical wire system includes the DC power distribution system and may be in the form of a wire harness electrically connected to the AC/DC converter 40 and to the DC electric devices 30 and 36, and other DC electric devices.
The door 14 allows easy integration of the electric devices 36, while maintaining structural, insulation, acoustic attenuation, and aesthetic requirements of an exterior or interior door. Moreover, slots (or openings) 56, such as of up to 1″ in width, may be machined or otherwise formed, such as by molding, into the latch stile 222 to allow mounting of various electric devices, as best shown in
The connecting wires 54 may be run to the low-voltage power distribution system 48 or connectors may be pre-mounted in the door 14, thus allowing the electric devices 36 to be plugged-in and electrically connected so that electric power can be supplied for use and functioning of the electric devices. Providing electric power to the door system 10 and the door 14 minimizes the need for changing batteries, thus assuring more reliable operation and continuous functioning of the electrical devices.
As illustrated in
As illustrated in
As illustrated in
The door 14 is constructed with at least one pre-wired receptacle 65 in which one of the electric devices 30, 36 and/or the battery 50 is releasably mounted. Specifically, one of the electric devices 30, 36 and/or the battery 50 can be removably (or releasably) plugged into the peripheral edge of the door 14, such as into edge 14EL of the latch side 14L of the door 14. The receptacles 65, best shown in
The housings 66 of the receptacles 65 are molded from a flame retardant polymer or other suitable material that meets the necessary UL and regulatory requirements for housing electrical devices. Ventilation preferably is provided to aid in heat transfer, or a conduit may be connected to the receptacles 65 and vent air out a top of the door 14. The receptacle 65 further comprises a multi-pin electrical socket (or female end) connector 74 including a connector housing 76 defining a socket 78, and a plurality of pins 80 electrically connected to the AC/DC converter 40 through the low-voltage electrical wires 54 of the electrical wire system. While a socket/pin system is shown, those skilled in the art will recognize that various other electrical connector systems, such as USB or HDMI, may be utilized to provide electric power to the associated electric device 36, to allow data transmission from them, and to receive an operating signal, such as to actuate electric powered lock 30.
According to the first exemplary embodiment of present invention, the receptacle 65 is inserted into one of the slots 56 in the latch stile 222 of the door 14 as best shown in
The pre-wired receptacle 65 may have a flange or some other unique mechanical identifier associated therewith to mate with a complementary receptacle of each of the electric devices 30 or 36 in order to identify the electrical plug connector and thus its electric device 30 or 36 as approved for use with the pre-wired receptacle 65. Alternatively, the electric devices 30 or 36 may have an electronic signature, electronic handshake or some other electrical identifier to assure that the electric device 30 or 36 is approved for installation. The door system 10 further comprises the electrical or mechanical identifier associated with each of the receptacles 65 and adapted for identifying the DC electric devices 30 or 36 authorized to be mounted within the associated pre-wired receptacle 65. Assuring that the electric devices are approved assures proper operation of the electric devices, maintains regulatory and UL compliance, and minimizes maintenance issues that might arise if unapproved electric devices could easily be installed onto the door system 10.
The receptacles 65 may each be closed on the open side by a removable cover or have a cut-out portion to allow access to electric devices of various size, as best shown in
Preferably, the battery 50, the power management controller 58, the sensors, the electric powered door latch 30 and/or at least some of the electric devices 361-364 are mounted into the edge of the latch side 14L of the door 14 in the prewired receptacles 65 for integration, modularization and serviceability. Further preferably, the battery 50, the power management controller 58, and the sensors, similarly include a pin-hole or other electrical connector adapted to be inserted and plugged into the connector 74 of the receptacle 65.
The power management controller 58 controls the electric powered door latch 30 and the electric devices 361-364, as well as other electrically operated devices in door system 10. Accordingly, the power management controller 58 may be in communication with the electric powered door latch 30 and the electric devices 361-364 through ethernet communication including data links 601, 602, 603, 604 and 60L. As best shown in
The power management controller 58 also controls operation of the electric powered door latch 30. The electric powered door latch 30 includes an electric latch operator, which may be used to lock the door 14 based upon input signals received from the power management controller 58. The central ECU 58 may allow the electric powered door latch 30 to be unlatched remotely, such as through a smartphone app operated by the home owner, without the intervention of a person wishing to enter the building. To unlatch the door 14, the electric latch operator moves the central latch bolt 33 of the electric powered door latch 30 by an electric motor associated with the electric latch operator of the electric powered door latch 30 into the retracted position. Thus, the power management controller 58 with the data links 601, 602, 603, 604 and 60L defines a power management system for the door system 10.
The door system 10 can be configured by a user to enable both local and cloud integration and data storage. Specific examples where a user can configure setting of the door system 10 include:
using motion sensors to turn on LED lighting, such as the threshold LED light 363 or the hallway illumination light 364;
using motion sensors to control the electric powered door latch 30;
using connected door lock sensors and video sensors to detect a user attempting to unlock the door 14;
using door state changes to activate home automation sequences, such as turning on interior lighting or for an announcement of occupancy; and
using motion sensors as a trigger for smart glass of a door lite of the door 14 to turn opaque for privacy.
Those skilled in the art will recognize that the sensors communicating with the power management controller 58 may be located on the building, the door frame 12 and/or the door 14 provided they are in communication with the power management controller 58.
Also, the power management controller 58 may notify a user that securing the door latch 30 is not possible due to the door 14 being ajar or open. For this purpose, the door assembly 10 may have a door state sensor (or door sensor) 64 wirelessly communicating with the power management controller 58, as best shown in
The ECU 58 is in electrical connection with battery 50. The ECU 58 may determine that the battery is depleted and requires replacement, and notify the user through a smartphone app or local controller that the battery 50 needs to be replaced. In the event that the battery 50 includes a charger, the ECU 58 monitors the battery 50 and operates the associated charger to assure sufficient charge of the battery 50 and/or to notify the user when the battery 50 is no longer able to hold a charge.
According to the present invention, the AC powered door closer 52 and the door state sensor 64, such as a Hall-effect sensor, interact to close the door 14 when the door state sensor 64 determines that the door 14 is open. Operation of the electric powered latch 30 when the door 14 is not properly closed may damage the latch 30. It should be understood that capabilities of the door state sensor 64 may contemplate various “states” of the door or the DC electric devices, i.e., locked/unlocked, open/closed, lights on/off, etc., but should also sense problems with the DC or AC electric devices themselves, for example, no Wi-Fi or Bluetooth signal, too much power draw, not enough power draw, too hot, too cold, (for a back-up battery 50, for example), etc. The sensors 62, 64 and other sensors communicate signals to power management controller 58, which then determines the action to take in response to the signals, and issues a command to the appropriate electric device 36. In this way, the door state sensor 64 may send a signal to power management controller 58 that the door 14 is open, and the power management controller 58 may issue a command to door closer 52 to operate to close the door 14 and, after receiving a closed door signal from sensor 64, send a signal to door closer 52 to close the door. The door open signal may be communicated by the door state sensor 64, such as on a periodic basis, but may be in response to an inquiry, such as from the owner through use of a smartphone app.
Similarly, one or more sensors may be provided to not only turn-on the LED light(s) but allow the electric powered door lock 30 to lock after determining that the individual has passed through the door 14 and the door 14 is closed, to communicate with a smartphone app to allow the owner to monitor activity around the door 14, to determine the status of the door 14, whether open or closed, and to determine whether someone is approaching the door 14.
The power management controller 58 may work both locally amongst the electric devices 36, as well as be supplemented by cloud integration for more advanced control while the user is away from the home control system. In the door system 10, a user may access the power system of the door system 10 via a wireless connection, a PC or a mobile device, such as through a smartphone app, to set up, configure and manage one or more power connected electric devices 36. Moreover, a user may access data and have user settable options for both addition of electric devices as well as the diagnostic health of the attached electric devices and/or the battery that would be a more efficient method to service issues that may have occurred with the electric devices and the battery. The smartphone app may be used to monitor activity around the door 14, to activate the electric powered door lock 30 to lock and unlock, and to determine the status of the door 14, whether open or shut.
As illustrated in
As illustrated in
Further according to the second exemplary embodiment, the AC/DC converter 40 is electrically connected to a DC power distribution system 148 by an electric power transfer device, such as by an armored cable 144 provided to transmit low voltage DC power, data, electric signals, or a combination thereof. Preferably the pockets in which the AC/DC converter 40 and the distribution system 148 are positioned are sized sufficiently to allow the armored cable 144 to be retained between them when the door 114 is closed and will not impede closing of the door 14.
Therefore, a pre-wired door system according to the present invention includes a power system and a door power management system and has the ability to provide both high-voltage and low-voltage electrical power for operation of a plurality of electric devices and a power management controller integrated into the door system. For the plurality of the electric devices integrated in the door system, the range of watts required, considering amperes and volts specifically required by each of the electric devices and use, varies widely from LED lighting at the low end, 2.9 watts per foot at 5 volts, to electromechanical door systems requiring extremely high amp output to move a door, typically over 500 watts at 120 volts. Thus, the present invention provides two or more power supply options that better match power needs of electric devices to allow for easier integration and power management given the diversity of power requirements.
By providing a convenient way to integrate the electric devices (hardware) into the door system with power available, manufacturers of the electric devices can simplify the designs and provide consumers with cleaner designs that are hidden and integrated into the door and do not require replacement of batteries. Furthermore, the invention enables integration of the electric devices into the door system in a standardized way through electrical connectors that allows convenient serviceability of the electric devices. The electric devices are integrated into the pre-wired door system according to the present invention so that the door maintains structural integrity, insulation performance, and is free of distortion or other aesthetic defects. In addition, having the components embedded in the door make them better protected from harsh environments making them safer and reliable for use by consumers.
The foregoing description of the exemplary embodiments of the present invention has been presented for the purpose of illustration in accordance with the provisions of the Patent Statutes. It is not intended to be exhaustive or to limit the invention to the precise forms disclosed. Obvious modifications or variations are possible in light of the above teachings. The embodiments disclosed hereinabove were chosen in order to best illustrate the principles of the present invention and its practical application to thereby enable those of ordinary skill in the art to best utilize the invention in various embodiments and with various modifications as are suited to the particular use contemplated, as long as the principles described herein are followed. Thus, changes can be made in the above-described invention without departing from the intent and scope thereof. It is also intended that the scope of the present invention be defined by the claims appended thereto.
This Application claims the benefit of U.S. Provisional Patent Applications Ser. No. 62/957,418 filed Jan. 6, 2020, Ser. No. 63/064,056 filed Aug. 11, 2020 and Ser. No. 63/087,528 filed Oct. 5, 2020, all by Sorice et al., which are hereby incorporated herein by reference in its entirety and to which priority is claimed.
| Number | Date | Country | |
|---|---|---|---|
| 62957418 | Jan 2020 | US | |
| 63064056 | Aug 2020 | US | |
| 63087528 | Oct 2020 | US |
