Ballistic resilient run-flat tire, kit and method thereof
View Patent ↗A ballistic resilient run-flat tire device, kit and method for manufacturing the same are presented for providing a vehicle a capability of traveling for at least 30 miles at 30 miles per hour, after the device has been compromised as of result of exposure due to ballistic ordinance rifle shots such as 7.62×39 mm and 7.62×54 R or air loss from road hazard punctures. The device includes a tire carcass and a polyurethane inner coating inside the tire carcass that defines an inflatable hollow chamber within the ballistic resilient run-flat tire. The tire carcass has an annular tread, sidewalls, and beads. The polyurethane inner coating inside the tire carcass defining a hollow chamber provides additional protection along the sidewalls and tread of the tire carcass. The kit includes the un-interconnected elements of the device. The method includes the steps of curing, discharging, filling, injecting, introducing, mounting, obtaining, and preparing.
1. A method of making a ballistic resilient run-flat tire comprising:
obtaining a tire carcass comprising:
an annular tread;
a pair of sidewalls respectively extending radially inwardly from opposite sides of the tread; and
beads embedded in radially inner ends of the sidewalls;
mounting an inner bladder within the tire carcass;
filling the inner bladder with a fluid;
priming the tire carcass with a primer;
preparing a polyurethane slurry by mixing a polyisocyanate mixture with a polyalcohol mixture;
introducing an antiballistic panel between the tire carcass and the mounted inner bladder;
injecting the polyurethane slurry between the tire carcass and the mounted inner bladder so that a thickness of the polyurethane slurry between the tire carcass and the mounted inner bladder at least one inch thick;
curing the injected polyurethane slurry to form a polyurethane inner coating having a side thickness of at least one inch between the sidewall of the tire carcass and that of the mounted inner bladder and bottom thickness of at least one inch between the tread of the tire carcass and that of the mounted inner bladder; and
discharging the fluid from the inner bladder.
2. The method of claim 1 , further comprising pressurizing the emptied inner bladder with a gas after discharging.
3. The method of claim 1 , further comprising:
adding an aliquot of a sealant into the empty inner bladder after discharging; and
pressuring the inner bladder with a gas.
4. The method of claim 1 , further comprising
dispensing an aliquot of a liquid liner into the empty inner bladder after discharging;
curing the liquid liner within the inner bladder; and
pressuring the inner bladder with a gas.
5. The method of claim 1 , wherein preparing the polyurethane slurry further comprises mixing a cross linking mixture and a curing agent into the polyurethane slurry.