# US 9,752,740 B1 · Electronic flameless candle > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 9,752,740 B1 - Document ID: US9752740B1 - Status: Granted - Kind: B1 - Application number: 15/489,589 - Filed: 2017-04-17 - Granted: 2017-09-05 - Earliest claimed: 2013-03-15 - Applicants: Xiaofeng Li - Inventors: Xiaofeng Li - Web page: https://patentgrep.com/patent/US9752740B1 ## CPC - F21S 10/04: simulating flames - A61L 9/03: Apparatus therefor - A61L 9/12: Apparatus, e.g. holders, therefor - A61L 9/127: {comprising a wick} - F21S 6/001: {candle-shaped} - F21S 9/02: the power supply being a battery or accumulator - F21V 23/04: the elements being switches (safety devices F21V25/00) - F21V 23/0442: {activated by means of a sensor, e.g. motion or photodetectors} - F21V 33/004: {Sanitary equipment, e.g. mirrors, showers, toilet seats or paper dispensers} - H05B 45/10: Controlling the intensity of the light - H05B 47/16: by timing means - A61L 2209/111: Sensor means, e.g. motion, brightness, scent, contaminant sensors - A61L 2209/12: Lighting means - A61L 2209/133: Replaceable cartridges, refills - F21W 2121/00: Use or application of lighting devices or systems for decorative purposes, not provided for in codes F21W2102/00 – F21W2107/00 - F21Y 2115/10: Light-emitting diodes [LED] - H05B 45/12: using optical feedback - H05B 47/19: via wireless transmission - H05B 47/196: {characterised by user interface arrangements} - H05B 47/1965: {using handheld communication devices} - F21S: NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS - A61L: METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES (preservation of bodies or disinfecting characterised by the agents employed A01N; preserving, e.g. sterilising, food or foodstuffs A23; preparations for medical, dental or toiletry purposes A61K) - F21V: FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR - H05B: ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL - F21W: INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS - F21Y: INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED ## Abstract An electronic flameless candle including a body having a top surface, a bottom surface, a sidewall between the top surface and the bottom surface, and a cavity defined by the top surface, the bottom surface and the sidewall, the body configured in shape and size to simulate a true flame candle. The candle may also include a light source operably connected to the body, the light source electrically operated to illuminate in a way that simulates a natural flicker of a real candle flame. The candle may also include a scent component, operably connected to the body, the scent component configured to emit a scent when heated and/or a sensor component, operably connected to the body, the sensor component configured to sense an environmental condition and affect a mode of the light source upon the sensing of the environmental condition. ## Claims ### Claim 1 An electronic candle, comprising: a body comprising a top surface, a bottom surface, at least one sidewall between the top surface and the bottom surface, and a cavity defined by the top surface, the bottom surface and the at least one sidewall, the body configured to simulate a true flame candle; and a light source operably connected to the body, the light source electrically operated to illuminate in a way that simulates a natural flicker of a real candle flame; a control circuitry in communication with at least two sensing devices: a first of at least two sensing devices including a wireless sensor configured to receive wireless signals from a remote control device and to control an operation of the light source or a timer operation in accordance with the received wireless signals; a second of the at least two sensing devices including a motion sensor configured to emit electromagnetic radiation, to receive reflected electromagnetic radiation upon reflection of the emitted electromagnetic radiation from an object, to sense different motions based on output signals produced from the received electromagnetic radiation, and to control an operation of the light source including an adjustment of one or more of: a brightness of the light source or a color of the light source. ### Claim 2 (depends on 1) The electronic candle of claim 1, further including a third sensor device configured to detect air movement, the third sensor device coupled to control circuitry to receive a signal indicative of a blow and to turn the electronic candle off in response thereto. ### Claim 3 (depends on 1) The electronic candle of claim 1, wherein the wireless sensor is a Bluetooth sensor. ### Claim 4 (depends on 1) The electronic candle of claim 1, wherein the motion sensor is positioned on a peripheral surface of the body and is flush with a surface of the body. ### Claim 5 (depends on 1) The electronic candle of claim 1, wherein the control circuitry is configured to detect different hand motions based on the received electromagnetic radiation, and to activate or deactivate a particular function of the electronic candle based on each detected hand motion. ### Claim 6 (depends on 5) The electronic candle of claim 5, wherein control circuitry is configured to turn on the electronic candle in response to detection of a first hand motion, and to turn off the electric candle based on detection of a second hand motion. ### Claim 7 (depends on 1) The electronic candle of claim 1, wherein the control circuitry is configured to detect motions of the object that is positioned between 5 to 10 meters from the motion sensor. ### Claim 8 (depends on 1) The electronic candle of claim 1, wherein the control circuitry is configured to, based on the received wireless signals, turn on the light source for a particular period of time in one of a flicker or a steady mode of operation, and to automatically turn off the electronic candle after expiration of the particular period of time. ### Claim 9 (depends on 1) The electronic candle of claim 1, wherein one or more walls of the cavity are partially transparent to allow at least a portion of light from the light source to pass through the partially transparent walls to outside environment. ### Claim 10 (depends on 1) The electronic candle of claim 1, further comprising a first removable outer shell that can be replaced by a second removable outer shell. ### Claim 11 (depends on 10) The electronic candle of claim 10, wherein first and the second removable outer shells have different colors. ### Claim 12 (depends on 1) The electronic candle of claim 1, further comprising a scent cartridge including a central hole, the scent cartridge positioned within the cavity and arranged to allow the light source to protrude upward from the central hole of the scent cartridge. ### Claim 13 (depends on 12) The electronic candle of claim 12, comprising a heating element configured to supply heat to the scent cartridge to facilitate dispersion of an aroma from the scent cartridge. ### Claim 14 (depends on 12) The electronic candle of claim 12, wherein the scent cartridge is configured to receive an electric current to facilitate dispersion of an aroma from within the cavity to the outside environment. ### Claim 15 (depends on 12) The electronic candle of claim 12, wherein the scent cartridge is part of a scent component of the electronic candle, and the control circuitry is configured to operate the scent component in one of the following modes of operation: on, on-high, on-low, off, or timed. ### Claim 16 (depends on 12) The electronic candle of claim 12, further including a fan coupled to the control circuitry to facilitate dispersion of scent from the scent cartridge. ### Claim 17 (depends on 1) The electronic candle of claim 1, wherein the control circuitry is configured to adjust an emission of scent from the scent cartridge based on the output signals produced by the motion sensor.