# US 2018/0323632 A1 · Door lock mechanism > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2018/0323632 A1 - Document ID: US20180323632A1 - Status: Published application - Kind: A1 - Application number: 15/588,172 - Filed: 2017-05-05 - Published: 2018-11-08 - Earliest claimed: 2017-05-05 - Assignees: Western Digital Technologies, Inc. - Applicants: Western Digital Technologies, Inc. - Inventors: Shaun Astarabadi - Web page: https://patentgrep.com/patent/US20180323632A1 ## CPC - E05B 47/0012: {with rotary electromotors (actuators with rotary electromotors per se H02K7/06, H02K23/68)} - E05B 47/026: {the bolt moving rectilinearly} - E05B 53/008: {by planetary gears} - G07C 9/00174: {Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys (mechanical locks with electric permutation E05B49/00; arrangements for sensing or reading record carriers G06K7/00; electronic switching H03K17/00)} - H02J 50/10: using inductive coupling - E05B 2047/0061: {using induction} - E05B 2047/0084: {Key or electric means; Emergency release} - G07C 9/00563: {using personal physical data of the operator, e.g. finger prints, retinal images, voicepatterns} - G07C 9/0069: {actuated in a predetermined sequence} - G07C 2009/00634: {Power supply for the lock} - G07C 2009/00769: {with data transmission performed by wireless means} - H02J 7/70: characterised by the mechanical construction - E05B: LOCKS; ACCESSORIES THEREFOR; HANDCUFFS - G07C: TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE - H02J: ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY ## Abstract A lock mechanism for a door including a deadbolt configured to be positioned in an extended first position and a retracted second position. The lock mechanism further includes an actuator for moving the deadbolt between the first and second positions, and a rechargeable battery for powering the actuator. A receiving coil of the lock mechanism generates an induced current for charging the rechargeable battery. The receiving coil is configured to generate the induced current from an electromagnetic field generated by a transmitting coil facing the receiving coil and located on an interior surface of a door frame for the door. ## Claims ### Claim 1 A lock mechanism for a door, comprising: a deadbolt configured to be positioned in an extended first position and a retracted second position; an actuator for moving the deadbolt between the first and second positions; a rechargeable battery for powering the actuator; and a receiving coil for generating an induced current for charging the rechargeable battery from an electromagnetic field generated by a transmitting coil facing the receiving coil and located on an interior surface of a door frame for the door. ### Claim 2 (depends on 1) The lock mechanism of claim 1, wherein the receiving coil is configured to be located on a side, top, or bottom edge surface of the door. ### Claim 3 (depends on 1) The lock mechanism of claim 1, wherein a length of the receiving coil is greater than a width of the receiving coil so that the length of the receiving coil is configured to extend along a length of an edge surface of the door. ### Claim 4 (depends on 1) The lock mechanism of claim 1, further comprising circuitry configured to: determine whether the receiving coil is generating the induced current; and indicate a position of the door based on whether the receiving coil is generating the induced current. ### Claim 5 (depends on 1) The lock mechanism of claim 1, further comprising circuitry configured to wirelessly communicate with a remote electronic device. ### Claim 6 (depends on 1) The lock mechanism of claim 1, further comprising a second receiving coil for charging the rechargeable battery, such that the second receiving coil is configured to be located on an edge surface of the door such that when the door is closed, the second receiving coil generates a second induced current from a second electromagnetic field generated by a second transmitting coil facing the second receiving coil on the interior surface or another interior surface of the door frame. ### Claim 7 (depends on 1) The lock mechanism of claim 1, wherein the transmitting coil is configured to receive power from a circuit for powering a doorbell or from a mains power circuit. ### Claim 8 A charging system for a device configured to be located on a window or a door, the charging system comprising: a transmitting coil configured to be located on an interior surface of a frame for the window or the door and to generate an electromagnetic field; and a receiving coil configured to be located on an edge surface of the window or the door and to generate an induced current from the electromagnetic field generated by the transmitting coil, wherein the generated induced current charges a rechargeable battery of the device. ### Claim 9 (depends on 8) The charging system of claim 8, wherein the receiving coil is further configured to be located on a side, top, or bottom edge surface of the window or the door. ### Claim 10 (depends on 8) The charging system of claim 8, wherein a length of the receiving coil is greater than a width of the receiving coil so that the length of the receiving coil is configured to extend along a length of the edge surface. ### Claim 11 (depends on 8) The charging system of claim 8, wherein the device comprises circuitry configured to: determine whether the receiving coil is generating the induced current; and indicate a position of the window or the door based on whether the receiving coil is generating the induced current. ### Claim 12 (depends on 8) The charging system of claim 8, wherein the device comprises circuitry configured to wirelessly communicate with a remote electronic device. ### Claim 13 (depends on 8) The charging system of claim 8, further comprising: a second transmitting coil configured to be located on the interior surface or another interior surface of the frame and to generate a second electromagnetic field; and a second receiving coil configured to be located on the edge surface or another edge surface of the window or the door such that when the window or the door is closed, the second receiving coil generates a second induced current from the second electromagnetic field for charging the rechargeable battery. ### Claim 14 (depends on 8) The charging system of claim 8, wherein the transmitting coil is configured to receive power from a circuit for powering a doorbell or from a mains power circuit. ### Claim 15 (depends on 8) The charging system of claim 8, wherein the device is at least one of a motorized lock, a door or window position sensor, a video camera, a doorbell, a biometric sensor, a Radio Frequency Identification (RFID) reader, and a keypad. ### Claim 16 A door, comprising: a deadbolt configured to be positioned in a first extended position and in a second retracted position; an actuator for moving the deadbolt between the first and second positions; a rechargeable battery for powering the actuator; and a receiving coil located on an edge surface of the door, wherein the receiving coil is configured to generate an induced current for charging the rechargeable battery from an electromagnetic field generated by a transmitting coil facing the receiving coil when the door is closed and located on an interior surface of a door frame for the door. ### Claim 17 (depends on 16) The door of claim 16, wherein the receiving coil is located on a side, top, or bottom edge surface of the door. ### Claim 18 (depends on 16) The door of claim 16, wherein a length of the receiving coil is greater than a width of the receiving coil such that the length of the receiving coil extends along a length of the edge surface of the door. ### Claim 19 (depends on 16) The door of claim 16, further comprising circuitry configured to: determine whether the receiving coil is generating the induced current; and indicate a position of the door based on whether the receiving coil is generating the induced current. ### Claim 20 (depends on 16) The door of claim 16, further comprising a second receiving coil for charging the rechargeable battery and located on the edge surface or another edge surface of the door such that when the door is closed, the second receiving coil is configured to generate a second induced current from a second electromagnetic field generated by a second transmitting coil facing the second receiving coil on the interior surface or another interior surface of the door frame.