# US 9,751,433 B2 · Child restraint system with user interface > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 9,751,433 B2 - Document ID: US9751433B2 - Status: Granted - Kind: B2 - Application number: 14/514,280 - Filed: 2014-10-14 - Published: 2015-04-02 - Granted: 2017-09-05 - Earliest claimed: 2011-10-06 - Assignees: Thorley Industries LLC - Applicants: Thorley Industries LLC - Inventors: Richard P. Juchniewicz; Rochak Chadha; Justin Cole; Robert Daley; Sun Jan Huang; Robert Pike; Chad Staller; David Szakelyhidi; Henry Thorne; Parker Trow - Web page: https://patentgrep.com/patent/US9751433B2 ## CPC - B60N 2/2806: {for securing the child seat to the vehicle} - B60N 2/269: {detecting or alerting means responsive to the Isofix locking on the child seat or vehicle} - B60N 2/2812: {for securing the child to the child seat} - B60N 2/2816: {with additional belt accessories, e.g. belt tension detectors} - B60N 2/2821: {having a seat and a base part} - B60N 2/2845: {having handles} - B60N 2/2851: {provided with head-rests} - B60N 2/2857: {characterised by the peculiar orientation of the child (B60N2/2869 takes precedence)} - B60N 2/2875: {inclinable, as a whole or partially} - B60N 2/2887: {Fixation to a transversal anchorage bar, e.g. isofix} - B60R 22/48: Control systems, alarms, or interlock systems, for the correct application of the belt or harness - B60R 2022/4841: {for sensing belt tension} - B60R 2022/4866: {Displaying or indicating arrangements thereof} - G01C 9/00: Measuring inclination, e.g. by clinometers, by levels - B60N: SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR - B60R: VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR - G01C: MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY (measuring liquid level G01F; radio navigation, determining distance or velocity by use of propagation effects, e.g. Doppler effects, propagation time, of radio waves, analogous arrangements using other waves G01S) ## Abstract A child seat or child restraining system for securing a child to a vehicle seat, and method of installing the car seat are provided. The child seat, which is configured to be secured to a seat of a vehicle, includes: a seat base secured to the seat of the vehicle; a child receiving portion supported by the seat base; and a belt tensioning system incorporated into the seat base. The belt tensioning system is configured to receive a belt that couples the seat base to the seat of the vehicle. The child seat also includes a controller operatively connected to the belt tensioning system and configured to automatically actuate the belt tensioning system. The belt tensioning system may be configured to drive the at least one belt in a pay-in direction to apply tension to the at least one belt. ## Claims ### Claim 1 A child seat configured to be secured to a seat of a vehicle comprising: a seat base secured to the seat of the vehicle; a child receiving portion supported by the seat base; a belt tensioning system incorporated into the seat base for receiving at least one belt that couples the seat base to the seat of the vehicle; and a controller operatively connected to the belt tensioning system and configured to automatically actuate the belt tensioning system, wherein the belt tensioning system is operable in a non-backdriveable state in which belt pay-out is prevented and in a backdriveable state in which belt pay-out is premitted. ### Claim 2 (depends on 1) The child seat of claim 1, wherein the belt tensioning system is configured to drive the belt in a pay-in direction to apply tension to the at least one belt. ### Claim 3 (depends on 1) The child seat of claim 1, wherein the belt tensioning system further comprises at least one drive system, a spindle connected to the belt and rotatable in the pay-in direction or in a payout direction, and a clutch configured to transfer torque generated by the drive system to the spindle to drive the spindle in the pay-in direction. ### Claim 4 (depends on 3) The child seat of claim 3, wherein the at least one drive system comprises one or more electric motors, one or more hydraulic motors, or combinations thereof. ### Claim 5 (depends on 3) The child seat of claim 3, wherein the clutch is configured to transition between an engaged position, in which the clutch is engaged to the spindle allowing the drive system to drive the spindle in the pay-in direction, and a disengaged position, in which the clutch disengages from the spindle, thereby allowing the spindle to rotate free from the drive system in either the pay-in direction or the payout direction. ### Claim 6 (depends on 5) The child seat of claim 5, wherein the belt tensioning system further comprises a clutch motor, the clutch motor being configured to transition the clutch between the engaged position and the disengaged position. ### Claim 7 (depends on 3) The child seat of claim 3, wherein the belt tensioning system further comprises a ratchet and pawl mechanism comprising a pawl configured to selectively engage the spindle to prevent rotation of the spindle in the payout direction. ### Claim 8 (depends on 7) The child seat of claim 7 wherein the belt tensioning system further comprises a manual override mechanism selectively coupled to the pawl that allows a user to manually disengage the pawl from the spindle. ### Claim 9 (depends on 8) The child seat of claim 8, wherein the manual override mechanism comprises an override clutch configured to automatically disengage from the pawl when the child receiving portion is connected to the seat base, thereby preventing the user from manually disengaging the pawl from the spindle with the manual override mechanism when the child receiving portion is connected to the base. ### Claim 10 (depends on 1) The child seat of claim 1, wherein the belt tensioning system comprises a belt retractor configured to apply a preload to the at least one belt prior to application of a full torque of the belt tensioning system. ### Claim 11 (depends on 1) The child seat of claim 1, wherein the child receiving portion comprises a rear-facing infant carrier, a forward facing infant carrier, a forward facing convertible child seat, a rear facing convertible child seat, a combination seat, or a booster seat. ### Claim 12 (depends on 1) The child seat of claim 1, further comprising at least one sensor connected to or associated with the child seat and operatively connected to the controller, wherein the controller is configured to process data from the at least one sensor to determine tension of the belt. ### Claim 13 (depends on 1) The child seat of claim 1, wherein the controller is configured to actuate the belt tensioning system to increase tension of the at least one belt if the tension of the at least one belt is determined to be below a threshold value. ### Claim 14 (depends on 1) The child seat of claim 1, wherein the controller is configured to stop the belt tensioning system if the tension of the at least one belt exceeds a threshold value. ### Claim 15 (depends on 1) The child seat of claim 1, further comprising: a battery for supplying power to the belt tensioning system and controller; and a battery monitor for determining a power level of the battery, wherein the battery monitor is configured to prevent the controller from installing the seat base to the seat of the vehicle when the power level is below a predetermined level. ### Claim 16 (depends on 1) The child seat of claim 1, further comprising at least one user interface device. ### Claim 17 (depends on 16) The child seat of claim 16, wherein the controller is configured to provide installation instructions via the user interface device, and wherein the controller selects a specific installation instruction based on feedback from at least one sensor or a user. ### Claim 18 (depends on 1) The child seat of claim 1, further comprising a leveling system comprising an automated drive system incorporated into the child seat for automatically leveling the child receiving portion relative to the seat of the vehicle. ### Claim 19 (depends on 18) The child seat of claim 18, wherein the leveling system further comprises a manual adjustment mechanism separate from the automated drive system, the manual adjustment mechanism being configured to allow a user to level the child receiving portion without actuating the automated drive system. ### Claim 20 (depends on 18) The child seat of claim 18, wherein the leveling system further comprises a telescoping foot extending from the seat base, and wherein the automated drive system is coupled to the telescoping foot and is configured to retract or extend the telescoping foot to adjust the height of the seat base. ### Claim 21 (depends on 1) The child seat of claim 1, wherein the child receiving portion is releasably connected to the seat base. ### Claim 22 A method for securing a child to a vehicle seat, the method comprising: providing a child seat comprising: a seat base secured to the seat of the vehicle, a child receiving portion supported by the seat base, at least one sensor, a belt tensioning system incorporated into the seat base for receiving at least one belt that couples the seat base to the seat of the vehicle, and a controller operatively connected to the belt tensioning system and configured to automatically actuate the belt tensioning system; and actuating the belt tensioning system in backdriveable state in which belt pay-out is permitted. ### Claim 23 (depends on 22) The method of claim 22 further comprising providing at least one of installation instructions and installation status via at least one user interface device connected to the child seat.