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US 5,004,031 AGranted
Pneumatic tire with a strip reinforcing laminate having filaments arranged together in an undulating form
AssigneeBridgestone Corporation
InventorsKuninobu Kadota, Yoshihide Kohno, Hiroyuki Koseki
Life of this patent
Estimating the term…
Abstract
A strip-like reinforcing laminate is comprised of at least two laminated strips each containing wave-like or zigzag reinforcing elements covered with a particular polymer material, wherein each reinforcing element in each of these strips has interlaced portions crossly lying on at least two reinforcing elements included in the adjoining strip, and the reinforcing elements in all of these strips are aligned in the same direction. Further, such a strip-like reinforcing laminate is used as a reinforcement in various parts of a pneumatic tire.
Claims27
A pneumatic tire comprising;
- a toroidal carcass extended between at least a pair of bead cores as a casing reinforcement, a belt reinforcing a crown portion of said toroidal carcass comprised of at least two belt layers each being composed of a strip comprising filaments arranged together in an undulating form in the same plane and the same direction as a reinforcing element and covered with a high molecular weight material having a modulus of elasticity lower than that of the reinforcing element, and a phase of said undulating form in said reinforcing element between said two strips is shifted so that a shifting quantity is continuously changed in the circumferential direction of said tire.
A pneumatic tire comprising;
- a toroidal carcass extended between at least a pair of bead cores as a casing reinforcement;
- a belt reinforcing a crown portion of said toroidal carcass comprised of a strip reinforcing laminate comprising of plural strips with each strip comprising filaments arranged together in an undulating form in the same plane as a reinforcing element and covered with a high molecular weight material having a modulus of elastitcity lower than that of the reinforcing element, each reinforcing element in each of said strips having interlaced portions on at least two reinforcing elements in the adjoining strip, and said reinforcing elements in all of said strips being aligned in the same direction and phases in said undulating form between said reinforcing element in one of said strips and said reinforcing element in another adjoining strip are shifted so that a shifting quantity is 3/8-5/8.lambda. where .lambda. is a wavelength of said reinforcing element.
A pneumatic tire comprising:
- a toroidal carcass extended between at least a pair of bead cores as a casing reinforcement;
- a belt reinforcing a crown portion of said toroidal carcass comprised of a strip reinforcing laminate comprised of plural strips with each strip comprising filaments arranged together in an undulating form in the same plane as a reinforcing element and covered with a high molecular weight material having a modulus of elasticity lower than that of the reinforcing element, each reinforcing element in each of said strips having interlaced portions on at least two reinforcing elements in the adjoining strips, and said reinforcing elements in all of said strips being aligned in the same direction, and at least one of amplitude and wavelength of said undulating reinforcing element in each strip of the above said strip lamination structure is different between the adjoining mutual strips.
A pneumatic tire comprising;
- a toroidal carcass extended as a casing reinforcement between a pair of bead cores located in bead portions of the tire, a strip reinforcing laminate comprised of plural strips with each strip comprising filaments arranged together in an undulating form in the same plane as a reinforcing element and covered with a high molecular weight material having a modulus of elasticity lower than that of the reinforcing element, each reinforcing element in each of said strips having interlaced portions on at least two reinforcing elements in the adjoining strip, and said reinforcing elements in all of said strips being aligned in the same direction, and used as a reinforcing means for said bead portion.
Dependencies are inferred from the claim text.