# US 11,998,115 B2 · Motorized furniture > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,998,115 B2 - Document ID: US11998115B2 - Status: Granted - Kind: B2 - Application number: 18/148,246 - Filed: 2022-12-29 - Published: 2023-05-04 - Granted: 2024-06-04 - Earliest claimed: 2018-03-12 - Assignees: Paramount Bed Co., Ltd. - Applicants: Paramount Bed Co., Ltd. - Inventors: Shinnosuke Kubota; Toshihide Shiino; Tadahiko Sakamaki; Shunsuke Yokoo - Web page: https://patentgrep.com/patent/US11998115B2 ## CPC - A47C 20/041: {by electric motors} - A61B 5/6892: {Mats} - A61B 5/024: Measuring pulse rate or heart rate - A61B 5/0816: {Measuring devices for examining respiratory frequency (measuring frequency of electric signals G01R23/00)} - A61B 5/4809: {Sleep detection, i.e. determining whether a subject is asleep or not} - A61G 7/015: divided into different adjustable sections, e.g. for Gatch position - A61M 21/02: for inducing sleep or relaxation, e.g. by direct nerve stimulation, hypnosis, analgesia (for massage A61H; electrotherapy A61N, e.g. applying alternating or intermittent electric currents for producing anaesthesia A61N1/36021) - A61B 5/4836: {Diagnosis combined with treatment in closed-loop systems or methods (A61B5/0036 takes precedence)} - A61M 2021/0022: {by the tactile sense, e.g. vibrations} - A61M 2021/0083: {especially for waking up} - A61M 2205/3303: Using a biosensor - A61M 2230/06: Heartbeat rate only - A61M 2230/42: Rate - A61M 2230/63: Motion, e.g. physical activity - A47C: CHAIRS; SOFAS; BEDS - A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D) - A61G: TRANSPORT, PERSONAL CONVEYANCES OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS (appliances for aiding patients or disabled persons to walk A61H3/00); OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES (embalming corpses A01N1/00) - A61M: DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY (introducing media into or onto the bodies of animals A61D7/00; means for inserting tampons A61F13/26; devices for administering food or medicines orally A61J; containers for collecting, storing or administering blood or medical fluids A61J1/05); DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY (surgery A61B; chemical aspects of surgical articles A61L); DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR {(Electrotherapy, e.g. producing anaesthesia by the use of alternating or intermittent currents A61N1/36021)} ## Abstract A motorized furniture according to embodiments of the present invention includes a control unit. The control unit transitions to a first falling asleep operation at second time where the elapse of time since first time, where the sleep of a user of the motorized furniture is detected, is equal to or larger than a first time threshold. The control unit performs a second falling asleep operation when a variation of a signal corresponding to a biological signal of the user in a first period during the first falling asleep operation is smaller than the variation in a first prior period, which exists prior to the first period, during the first falling asleep operation or when the absolute value of a difference between the variation in the first period and the variation in the first prior period is smaller than a first variation threshold. In the second falling asleep operation, the control unit performs at least one of: an operation of decreasing the inclination of a section of the motorized furniture; an operation of decreasing the gap between the height of a head part of a mattress of the motorized furniture and the height of a waist part of the mattress; and an operation of decreasing the difference between the pressure in the head part and the pressure in the waist part. The embodiments provide a motorized furniture capable of offering more comfortable sleep. ## Claims ### Claim 1 A furniture comprising: a moveable part; a sensor configured to detect a signal corresponding to a body movement of a user; and a controller configured to determine whether a change of the signal increases or decreases after the user is falling asleep, a state of the signal being a first state or a second state, automatically perform a first operation in response to determining that the change of the signal increases and the signal being in the first state closest to a given time, the first operation including raising a of the moveable part, and automatically perform a second operation in response to determining that the change of the signal increases and the signal not being in the first state closest to the given time, the second operation including lowering a tilt of the moveable part. ### Claim 2 (depends on 1) The furniture according to claim 1, wherein the controller is configured to change the tilt of the moveable part based on a history of the change of the signal associated with a history of the tilt of the moveable part. ### Claim 3 (depends on 2) The furniture according to claim 2, wherein the controller includes a standby mode and a sleeping mode, and the controller is configured to control the sensor to acquire the signal in the sleeping mode. ### Claim 4 (depends on 1) The furniture according to claim 1, wherein the controller includes a standby mode and a sleeping mode, and the controller is configured to control the sensor to acquire the signal in the sleeping mode. ### Claim 5 (depends on 4) The furniture according to claim 4, wherein the controller is configured to automatically perform the second operation in response to the change of the signal decreasing in the sleeping mode. ### Claim 6 (depends on 1) The furniture according to claim 1, wherein the controller is configured to: control the sensor to acquire the signal in response to the controller not receiving an instruction from the user; and not perform the second operation in response to receiving an instruction from the user. ### Claim 7 (depends on 6) The furniture according to claim 6, wherein the controller is configured to: automatically perform the second operation in response to the controller not receiving an instruction from the user; and not perform the second operation in response to receiving an instruction from the user. ### Claim 8 (depends on 7) The furniture according to claim 7, wherein the controller is configured to control the moveable part so as to execute the instruction from the user. ### Claim 9 (depends on 8) The furniture according to claim 8, wherein the controller is configured to: perform the second operation in response to the change of the signal decreasing; and suspend the second operation and control the moveable part so as to execute the instruction from the user in response to receiving the instruction from the user during the second operation. ### Claim 10 (depends on 7) The furniture according to claim 7, wherein the controller is configured to: perform the second operation in response to the change of the signal decreasing; and suspend the second operation and control the moveable part so as to execute the instruction from the user in response to receiving the instruction from the user during the second operation.