Apparatus for making tires filled with flatproofing material
AssigneePC Industries
InventorCharles A. Shaffer
Life of this patent
Estimating the term…
Abstract
A tire, and an apparatus and method for forming a tire. The tire may either be a tubed or tubeless tire, and is filled with a mixture of virgin rubber and small rubber pieces. Preferably, a machine grinds the core of used flatproofed tires, or pieces thereof, into a finely communicated pulverulent. The pulverent is mixed with liquid virgin flatproofing material, such as a polyurethane. An injector introduces this mixture, into the core of a tire, typically through a valve. The core of the tire is preferably substantially filled with this mixture. The injector may take the form of one or more elongated screws and the mixing may occur as the ground rubber is being conveyed by the screw.
Claims15
A tire cavity filling system comprising:
- a grinding device capable of grinding cure polyurethane into core bits, having an outlet;
- an elongated rotatable screw device for mixing core bits and a liquid virgin polyurethane and pressurizing and transferring the mixed material into the core of a tire, said screw device disposed adjacent to said grinding device and having an input attached to said grinding device outlet to receive core bits from the grinding device;
- and
- a controller electronically coupled to the grinding device and the elongated screw device.
Dependencies are inferred from the claim text.