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This patent discloses a system to release a seatbelt in a vehicle automatically. The system may include a seatbelt sensor, mishap sensors, a controller, and a guillotine unit. The controller may communicate signals with the seatbelt sensor and mishap sensors and the guillotine unit may receive signa

This patent discloses a system to release a seatbelt in a vehicle automatically. The system may include a seatbelt sensor, mishap sensors, a controller, and a guillotine unit. The controller may communicate signals with the seatbelt sensor and mishap sensors and the guillotine unit may receive signals from the controller. The guillotine unit may include a webbing guide, a gas chamber having a supply of pressurized gas, and a gas supply line connected between the webbing guide and the gas chamber. The webbing guide may include spring biased piston and a blade attached to the piston at a positioned above a seatbelt webbing of the seatbelt. On receiving a cut signal from the controller, pressurized gas from the gas chamber may be released to cause the piston to move the blade through the seatbelt webbing to slice through seatbelt webbing.

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What is claimed is: 1. A system to release a seatbelt in a vehicle automatically, the system comprising: a seatbelt sensor to determine whether mating pieces of the seatbelt are fastened together; mishap sensors, including at least one of a surround sensor to detect motion of the vehicle, a heat se

What is claimed is: 1. A system to release a seatbelt in a vehicle automatically, the system comprising: a seatbelt sensor to determine whether mating pieces of the seatbelt are fastened together; mishap sensors, including at least one of a surround sensor to detect motion of the vehicle, a heat sensor to detect heat conditions for a fire, and a water sensor to detect immersion of the vehicle in water; a controller configured to communicate signals with the seatbelt sensor and mishap sensors; and a guillotine unit configured to receive signals from the controller, where the guillotine unit includes a webbing guide, a gas chamber having a supply of pressurized gas, and a gas supply line connected between the webbing guide and the gas chamber, where the webbing guide includes a guide housing having therein a piston spring positioned about a piston and a blade attached to the piston at a position that is configured to be above a seatbelt webbing of the seatbelt, where the guillotine unit is responsive to signals from the controller and where the piston is responsive to the supply of pressurized gas such that when the supply of pressurized gas is passed from the gas chamber through the gas supply line to the piston, the supply of pressurized gas overcomes forces from the spring and causes the piston to move the blade through the seatbelt webbing to slice through seatbelt webbing. 2. The system of claim 1, where the guide housing includes a front wall, a U-shape side attached to and following the front wall, and a bottom wall perpendicularly attached to and following along the front wall to connect the U-shape side with itself. 3. The system of claim 2, where the guide housing additionally includes screw bosses, a piston support having a piston first opening, a blade guide having a blade slot, and a webbing slot. 4. The system of claim 3, where the blade has a V-shaped cutting side positioned and configured to both poke through a lateral midpoint of the seatbelt webbing and to slice outwardly through the seatbelt webbing. 5. The system of claim 1, where the gas chamber includes a gas cartridge housing, a solenoid mounting bracket, a gas cartridge cap, a cutter holder, a gas cartridge cutter, a gas cartridge having a cartridge nozzle, a striker pin, and a solenoid, where the gas cartridge housing is connected between the solenoid mounting bracket and the cutter holder. 6. The system of claim 5, where the cutter holder is connected to the gas supply line and retains the gas cartridge cutter, where the solenoid mounting bracket is connected to the gas cartridge cap, where the gas cartridge resides against the solenoid mounting bracket and within gas cartridge housing so that the cartridge nozzle is inline with gas cartridge cutter. 7. The system of claim 6, where the striker pin resides within the solenoid and the solenoid mounting bracket so that the striker pin is inline with the gas cartridge and the gas cartridge cutter. 8. The system of claim 7, where the solenoid resides within the gas cartridge cap and in registration with the solenoid mounting bracket so that the striker pin is inline with the gas cartridge and the gas cartridge cutter. 9. The system of claim 1 further comprising: timers configured to be in communication with the controller to delay signals from the controller to the guillotine unit for a predetermined time. 10. The system of claim 9, where the timers include a rollover timer, an impact timer, a tilt timer, a heat timer, and an immersion timer. 11. The system of claim 10, where the immersion timer is configured to override the rollover timer, the tilt timer, the impact timer, and the heat timer, where the rollover timer is configured to override the tilt timer, the impact timer, and the heat timer, where the tilt timer is configured to override the impact timer and the heat timer, and where the impact timer is configured to override the heat timer. 12. The system of claim 11, where the controller is positioned under a driver seat of the vehicle. 13. The system of claim 12, where there is one seatbelt sensor for each seatbelt in the vehicle. 14. The system of claim 1, further comprising: a seatbelt indicator panel configured to be in communication with the controller; and a recharge supply connected to the controller through the surround sensor. 15. The system of claim 14, where the heat sensor is configured to generate a signal in response to detecting a temperature of approximately greater than 360 degrees Fahrenheit. 16. The system of claim 15, where the water sensor is configured to generate a signal in response to being immersed in water. 17. A method to release a seatbelt in a vehicle automatically, the method comprising: presenting a system to release a seatbelt in a vehicle automatically, where the system includes a seatbelt sensor, mishap sensors, a controller, and a guillotine unit, where the seatbelt sensor is configured to determine whether mating pieces of the seatbelt are fastened together, where the mishap sensors include at least one of a surround sensor to detect motion of the vehicle, a heat sensor to detect heat conditions for a fire, and a water sensor to detect immersion of the vehicle in water, where the controller is configured to communicate signals with the seatbelt sensor and mishap sensors, and where the guillotine unit is configured to receive signals from the controller, where the guillotine unit includes a webbing guide, a gas chamber having a supply of pressurized gas, and a gas supply line connected between the webbing guide and the gas chamber, where the webbing guide includes a guide housing having therein a piston spring positioned about a piston and a blade attached to the piston at a position that is configured to be above a seatbelt webbing of the seatbelt, where the guillotine unit is responsive to signals from the controller and where the piston is responsive to the supply of pressurized gas such that when the supply of pressurized gas is passed from the gas chamber through the gas supply line to the piston, the supply of pressurized gas overcomes forces from the spring and causes the piston to move the blade through the seatbelt webbing to slice through seatbelt webbing; determining whether a driver seatbelt is connected; if driver seatbelt is connected, then using the mishap sensors to determine whether a mishap has occurred to the vehicle; if a mishap has occurred to the vehicle, then receiving a mishap signal in the controller from a mishap sensor; allowing a predetermined amount of time to pass; receiving a cut signal in the guillotine unit from the controller after the predetermined amount of time has passed; and passing the blade through the seatbelt webbing to slice through seatbelt webbing. 18. The method of claim 17, further comprising: causing a striker pin to a strike gas cartridge so that a cartridge nozzle of the gas cartridge moves forward into a cutter blade to be breach by the cutter blade and to release pressurized gas within the gas cartridge into the gas supply line.