Back to results
US 5,096,772 AGranted
Anisotropic laminate of belted portions of a scrap tire
OwnerRobert H. Snyderinventor
Life of this patent
Estimating the term…
Loading patent…
Loading patent…
OwnerRobert H. Snyderinventor
Estimating the term…
The problem of recycling scrap radial tires is addressed by providing many uses for a laminate made by bonding two or more belt sections of a radial tire, the sidewalls of which have been cut away, the tire then cut open, and de-treaded. The result is a multi-ply structure which is sensibly rigid in all three directions because each belt ply in a belt is reinforced with cords at an angle, the cord angle in one belt ply being opposed to the angle in the other. A slat, bar, or beam, formed with plural belts is essentially rigid in a direction at right angles to its longitudinal axis, because for bending to occur, one belt must be in tension and the other in compression. Neither condition is favored because of the opposed cord angles and belt geometry. Though essentially rigid because of the cord geometry, the amount of rubber in the laminate allows it to be deformable relative to wood or steel having the same thickness. The result is a laminate which has anisotropic properties but may also be used to absorb impact. Belts reinforced with steel wire cords are preferred. Various configurations, such as arcuate slats, bars or beams may be formed, as well as mats and annular bodies.
A reinforced laminate of arbitrary shape and size comprising at least two belted portions ("belts") of a vulcanized rubber pneumatic radial tire, each belt being detreaded and freed of the tire's beads and sidewalls, said belts being bonded together at their common interface with a bonding means, each belt having at least two reinforcing belt plies having parallel spaced-apart reinforcing cords at equal and opposite cord angles with respect to a mid-longitudinal center plane of each belt ply wherein there is a cord angle sequence in the range from about +20.degree./-20.degree. to +45.degree./-45.degree., whereby an essentially rigid, anistropic laminate of cordreinforced vulcanizate is formed.
A ballast mat comprising rubber vulcanizate reinforced with plural layers of superimposed steel wire cords in spaced-apart relationship with respect to each other in the same layer, and in spaced-apart relationship to cords in another layer, a first, upper layer of belts being provided by at least two adjacent steel-belted portions of a vulcanized pneumatic tire in longitudinal edge-to-edge relationship in a first edge-abutting line, and a second lower layer of belts being provided by at least two adjacent steel-belted portions of a vulcanized pneumatic tire in longitudinal edge-to-edge relationship in a second edge-abutting line, wherein said first and second edge-abutting lines are mutually displaced relative to each other in parallel planes.
An energy-absorbing laminate comprising at least two detreaded belted portions or "belts" of a vulcanized pneumatic radial tire, coextensively laminarly bonded together at their common interface, each belt having at least two reinforcing belt plies having parallel spaced-apart cords at equal and opposite cord angles with respect to a mid-longitudinal center plane of each belt ply wherein there is a cord angle sequence in the range from about +20.degree./-20.degree. to +45.degree./-45.degree., whereby an energy-absorbing laminate of reinforced vulcanizate having anisotropic properties, is formed.
A method for forming an energy-absorbing laminate comprising,
Dependencies are inferred from the claim text.