# US 11,110,876 B2 · Carseat adjustment strap sensor > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,110,876 B2 - Document ID: US11110876B2 - Status: Granted - Kind: B2 - Application number: 16/540,282 - Filed: 2019-08-14 - Published: 2020-02-20 - Granted: 2021-09-07 - Earliest claimed: 2018-08-14 - Applicants: Jeremy R. Escobar - Inventors: Jeremy R. Escobar - Web page: https://patentgrep.com/patent/US11110876B2 ## CPC - B60R 21/0155: {sensing belt tension} - B60R 22/12: Construction of belts or harnesses (B60R21/18 takes precedence {; woven fabrics for safety belts D03D1/0005}) - B60R 22/105: {for children (adaptation of children's seats for seat belts B60N2/265, B60N2/2803)} - B60R 22/48: Control systems, alarms, or interlock systems, for the correct application of the belt or harness - H10H 29/14: comprising multiple light-emitting semiconductor components - F21Y 2115/10: Light-emitting diodes [LED] - B60R: VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR - H10H: INORGANIC LIGHT-EMITTING SEMICONDUCTOR DEVICES HAVING POTENTIAL BARRIERS - 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 The present invention discloses a seatbelt strap sensor for automobiles. The seatbelt strap sensor could detachably fasten to a strap of a seatbelt of the automobile. The strap sensor comprises a plurality of LEDs disposed within a housing, and a pressure sensor and a bracket are disposed on the rear surface of the housing. The pressure sensor is positioned against the body of a child and configured to measure the tightness of the strap of a seatbelt. The bracket has capable to tightly hold the strap sensor to the strap of the seatbelt. The LEDs are configured to illuminate different colors for indicating the tightness of the strap based on the output of the pressure sensor. The housing having indications with letters or words and symbols corresponding to the LEDs. It helps users to determine the tightness of the strap and could be adjusted optimally. ## Claims ### Claim 1 A seatbelt strap sensor for attachment to a strap of a seatbelt in an automobile, comprises: a housing comprises a front surface and a rear surface; a plurality of light emitting diodes (LEDs) disposed within the housing, wherein the housing allows the LEDs to project outwards via one or more apertures on the front surface; a bracket mounted on the rear surface of the housing, and a pressure sensor mounted on the surface of the bracket, wherein the pressure sensor is configured to measure the tightness or tension of the strap of the seatbelt. ### Claim 2 (depends on 1) The seatbelt strap sensor of claim 1, wherein the plurality of LEDs having one or more colors, configured to illuminate any one of the LED color, thereby delivering the information on the tightness or tension of the strap to the user. ### Claim 3 (depends on 2) The seatbelt strap sensor of claim 2, wherein the illumination of the LED color is based on the sensor measurement on the tightness or tension of the strap. ### Claim 4 (depends on 1) The seatbelt strap sensor of claim 1, wherein the plurality of LEDs are an amber, a green and a red color. ### Claim 5 (depends on 1) The seatbelt strap sensor of claim 1, wherein the bracket slips under the strap to avoid the slippage of seatbelt strap sensor from the strap of the seatbelt during use. ### Claim 6 (depends on 1) The seatbelt strap sensor of claim 1, wherein the seatbelt strap sensor mounted on a chest clamp of the seatbelt, via the bracket. ### Claim 7 (depends on 1) The seatbelt strap sensor of claim 1, wherein the housing of the seatbelt strap sensor is injection molded from an acrylonitrile butadiene styrene (ABS) polycarbonate plastic. ### Claim 8 (depends on 1) The seatbelt strap sensor of claim 1, wherein the pressure sensor is a metal foil stain gauge. ### Claim 9 (depends on 1) The seatbelt strap sensor of claim 1, wherein the bracket is mounted on the rear side of the sensor, via any one of an adhesive or a fastener. ### Claim 10 (depends on 1) The seatbelt sensor of claim 1, wherein the bracket is a clamp and a clip. ### Claim 11 A seatbelt strap sensor, comprising: a housing comprises a front surface and a rear surface, and a plurality of electronic components, comprises: a plurality of light emitting diodes (LEDs) disposed within the housing, wherein the housing allows the LEDs to project outwards via one or more apertures on the front surface; a pressure sensor mounted on the surface of a bracket mounted on the rear side of the housing, to measure the tightness or tension of the strap of the seatbelt, thereby generating an electrical signal; a microcontroller in communication with the pressure sensor, wherein the microcontroller processes the electrical signal received from the pressure sensor, thereby generating an output signal, and a LED drive module in communication with the microcontroller, wherein the LED drive module receives the output signal of the microcontroller, thereby controlling the plurality of LEDs. ### Claim 12 (depends on 11) The seatbelt strap sensor of claim 11, wherein the output signal of the microcontroller is at least any one of a digital signal or a pulse-width modulation signal. ### Claim 13 (depends on 11) The seatbelt strap sensor of claim 11, further comprises at least one power source disposed within the housing configured to power the plurality of LEDs and one or more electronic components disposed within the housing. ### Claim 14 (depends on 11) The seatbelt strap sensor of claim 11, further comprises a switch for the power source. ### Claim 15 (depends on 11) The seatbelt strap sensor of claim 11, wherein the power source is at least any one of a battery, a fuel cell, and a solar cell.