# US 10,767,403 B2 · Automatic car door swing limiter > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,767,403 B2 - Document ID: US10767403B2 - Status: Granted - Kind: B2 - Application number: 15/824,449 - Filed: 2017-11-28 - Published: 2019-04-04 - Granted: 2020-09-08 - Earliest claimed: 2017-10-03 - Assignees: International Business Machines Corporation - Applicants: International Business Machines Corporation - Inventors: Aleksandr Y. Aravkin; Guy Cohen; Lior Horesh; Raya Horesh - Web page: https://patentgrep.com/patent/US10767403B2 ## CPC - E05C 17/006: {with means for detecting obstacles outside the doors} - G08G 1/166: {for active traffic, e.g. moving vehicles, pedestrians, bikes} - G08G 1/168: {Driving aids for parking, e.g. acoustic or visual feedback on parking space} - E05F 15/40: Safety devices, e.g. detection of obstructions or end positions - E05F 2015/483: {for detection during opening} - E05Y 2400/32: Position control, detection or monitoring - E05Y 2400/44: Sensors not directly associated with the wing movement - E05Y 2400/446: Vehicle state sensors, e.g. parked or inclination - E05Y 2900/531: Doors - E05C: BOLTS OR FASTENING DEVICES FOR WINGS, SPECIALLY FOR DOORS OR WINDOWS (latching means for sideboard or tailgate structures for vehicles B62D, {B62D33/02}; fastening devices for constructional or engineering elements E04, F16B; locks, fastening devices structurally or operatively combined or having significant cooperation with locks E05B; means for operating or controlling wing fasteners in conjunction with mechanisms for moving the wing E05F) - 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}) - E05F: DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING - E05Y: INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF ## Abstract A computer implemented method and computer system for automatically limiting the swing angle of a vehicle door to not hit nearby moving objects, including predicting that a moving object will move to be within a predetermined distance of the door and predicting the distance the moving object will be from the door, determining a swing angle extent of an opening of the door that will avoid hitting the moving object and actuating a door controller to limit the swing angle of the door. Historical data on the speed the door is opened can be used in determining the door swing angle. The current position and velocity of the moving object relative to the door of the vehicle is estimated based on signals received from sensors attached to the vehicle. ## Claims ### Claim 1 A computer implemented method for controlling an opening of a door of a vehicle to a swing angle comprising: predicting a first distance a moving object will be from the door of the vehicle at a first point in time; determining a first swing angle extent of an opening of the door that will avoid hitting the moving object at the first point in time based in part on the first predicted distance; actuating a door controller prior to the first point in time to limit a swine angle of the door to the determined first swing angle extent; predicting, after the door controller is actuated and as the door is opening, a second distance the moving object will be from the door of the vehicle at a second point in time after the door has opened, the second distance being less than the first distance; determining, as the door is opening, a second swing angle extent of the opening of the door that will avoid hitting the moving object at the second point in time based in part on the predicted second distance, the second swing angle extent being less than the first swing angle extent; and actuating the door controller, prior to the second point in time, to limit a swing angle of the door to the determined second swing angle extent. ### Claim 2 (depends on 1) The computer implemented method of claim 1, further comprising estimating current position and velocity of the moving object relative to the door of the vehicle. ### Claim 3 (depends on 2) The computer implemented method of claim 2, wherein estimating current position and velocity of the moving object relative to the door of the vehicle is based in part on signals received from at least one sensor attached to the vehicle. ### Claim 4 (depends on 2) The computer implemented method of claim 2, further comprising actuating the door controller prior to the first point in time to increase resistance to an opening movement of the door. ### Claim 5 (depends on 1) The computer implemented method of claim 1, further comprising actuating the door controller prior to the first point in time to stop the opening movement of the door. ### Claim 6 (depends on 1) The computer implemented method of claim 1, further comprising activating a warning signal in response to the actuation of the door controller. ### Claim 7 (depends on 1) The computer implemented method of claim 1, wherein the second distance and the second swing angle extent are based on the door opening speed.