# US 2019/0167941 A1 · Drowsiness eliminating device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2019/0167941 A1 - Document ID: US20190167941A1 - Status: Published application - Kind: A1 - Application number: 16/324,006 - Filed: 2017-08-03 - Published: 2019-06-06 - Earliest claimed: 2016-08-12 - Assignees: Aisin Seiki Kabushiki Kaisha - Applicants: Aisin Seiki Kabushiki Kaisha - Inventors: Hideaki YAMAGUCHI; Takayuki KODAMA - Web page: https://patentgrep.com/patent/US20190167941A1 ## CPC - A47C 7/72: Adaptations for incorporating lamps, radio sets, bars, telephones, ventilation, heating or cooling arrangements or the like - A61M 21/00: Other devices or methods to cause a change in the state of consciousness; Devices for producing or ending sleep by mechanical, optical, or acoustical means, e.g. for hypnosis - B60N 2/976: {massaging systems} - B60N 2/986: {Side-rests (B60N2/2872, B60N2/885 take precedence)} - G08G 1/16: Anti-collision systems (road vehicle drive control systems for predicting or avoiding probable or impending collision otherwise than by control of a particular sub-unit B60W30/08) - A61M 2021/0022: {by the tactile sense, e.g. vibrations} - A61M 2021/0083: {especially for waking up} - A61M 2205/50: with microprocessors or computers - B60N 2002/981: {Warning systems, e.g. the seat or seat parts vibrates to warn the passenger when facing a danger} - A47C: CHAIRS; SOFAS; BEDS - 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)} - B60N: SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR - G08G: TRAFFIC CONTROL SYSTEMS (guiding railway traffic, ensuring the safety of railway traffic B61L; arrangement of road signs or traffic signals E01F9/00; radar or analogous systems, sonar systems, lidar systems specially adapted for traffic control G01S13/91, G01S15/88, G01S17/88; {radar or analogous systems, sonar systems, lidar systems specially adapted for anti-collision purposes G01S13/93, G01S15/93, G01S17/93}) ## Abstract The drowsiness eliminating device includes one of a first stimulus imparting device group including a first stimulus imparting device and a second stimulus imparting device imparting the stimulus to the first skin portion which is a skin part covering a skeletal muscle associated with a first motion illusion induced at a supplementary motor area activated by the stimulus to the tendon of latissimus dorsi and a second stimulus imparting device group including a third stimulus imparting device and a fourth stimulus imparting device imparting the stimulus to the second skin portion which is a skin part covering a skeletal muscle associated with a second motion illusion induced at a supplementary motor area activated by the stimulus to the tendon of the gluteus medius muscle and a drive control for drive-controlling one of first stimulus imparting device group and second stimulus imparting device group to impart a stimulus to the user. ## Claims ### Claim 1 A drowsiness eliminating device comprising: at least one of: a first stimulus imparting device group including: a first stimulus imparting device provided on a chair such that a tendon of latissimus dorsi of a user of the chair faces when the user sits on the chair and imparting a stimulus to the tendon of latissimus dorsi of the user; and a second stimulus imparting device provided on the chair facing a first skin portion when the user sits on the chair and imparting a stimulus to the first skin portion of the user which is a skin part covering a skeletal muscle which is a cooperative muscle of the latissimus dorsi and is associated with a first motion illusion induced at a supplementary motor area activated by the stimulus to the tendon of latissimus dorsi; and a second stimulus imparting device group including: a third stimulus imparting device provided on the chair such that a tendon of gluteus medius muscle of the user of the chair faces when the user sits on the chair and imparting a stimulus to the tendon of gluteus medius muscle of the user; and a fourth stimulus imparting device provided on the chair facing a second skin portion when the user sits on the chair and imparting a stimulus to the second skin portion of the user which is a skin part covering a skeletal muscle which is associated with a second motion illusion induced at a supplementary motor area activated by the stimulus to the tendon of gluteus medius muscle and which is a cooperative muscle of the gluteus medius muscle; and a drive control device which includes a driving control portion which drive-controls said at least one of the first stimulus imparting device group and the second stimulus imparting device group to impart a stimulus to the user of the chair. ### Claim 2 (depends on 1) The drowsiness eliminating device according to claim 1, wherein a magnitude of the stimulus imparted from the second stimulus imparting device is set to be smaller than a magnitude of the stimulus imparted from the first stimulus imparting device and a magnitude of the stimulus imparted from the fourth stimulus imparting device is set to be smaller than a magnitude of the stimulus imparted from the third stimulus imparting device. ### Claim 3 (depends on 1) The drowsiness eliminating device according to claim 1, wherein when the stimulus imparted from the second stimulus imparting device and the fourth stimulus imparting device is a vibration stimulus, a frequency of the vibration is set from 40 Hz to 60 Hz. ### Claim 4 (depends on 1) The drowsiness eliminating device according to claim 1, wherein when the stimulus imparted from the second stimulus imparting device and the fourth stimulus imparting device is a pressing force stimulus, a magnitude of the pressing force is set to a value from 1 to 2 kgf. ### Claim 5 (depends on 1) The drowsiness eliminating device according to claim 1, further comprising: a judging portion for judging whether or not it is necessary to eliminate a drowsiness of the user sitting on the chair; and a first stimulus pattern determining portion for determining a first stimulus pattern for eliminating the drowsiness of the user when the judging portion judges that it is necessary to eliminate the drowsiness of the user, wherein the driving control portion imparts the stimulus to the user by drive-controlling said at least one of the first stimulus imparting device group and the second stimulus imparting device group to impart the stimulus to the user based on the first stimulus pattern determined by the first stimulus pattern determining portion. ### Claim 6 (depends on 1) The drowsiness eliminating device according to claim 1, wherein the chair is a vehicle seat installed in a vehicle and the user is a driver of the vehicle.