US6983776B2
Expired / Lapsed
US
⏱️ 0.0 years remaining
Structurally supported resilient tire with bias ply carcass
Assignee: Michelin Recherche et Technique SA Switzerland
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Filing: 2002-12-13
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Granted: 2006-01-10
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Expires: 2022-12-13
Abstract
Abstract A resilient tire that supports a load without internal air pressure includes a ground contacting tread portion and sidewall portions extending radially inward from said tread portion and anchored in bead portions. A bias ply carcass extends between the beads to support the sidewalls. A reinforced annular band is disposed radially inward of the tread portion. The band comprises an elastomeric shear layer at a radially outer side of the bias ply carcass and a membrane adhered to a radially outward side of the elastomeric shear layer. Each of the bias ply and membrane has a longitudinal tensile modulus sufficiently greater than the shear modulus of the shear layer so that when under load the ground contacting portion of the tire deforms to a flat contact region through shear strain in the shear layer while maintaining constant the length of the membranes.
Inventors
- 👤 Ronald Hobart Thompson
- 👤 Timothy B. Rhyne
- 👤 Kenneth W. DeMino
- 👤 Steven M. Cron
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:11
CPC Classifications
B; B60; B60C; B60C17/00; B60C7/00; B60C7/22; B60C9/00; B60C9/02; B60C9/04; B60C9/06; Y; Y10; Y10T; Y10T152/00; Y10T152/10; Y10T152/10135; Y10T152/10171; Y10T152/1018; Y10T152/10279; Y10T152/10288; Y10T152/10297
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
142 words
A structurally supported resilient tire, comprising a ground contacting tread portion and sidewall portions extending radially inward from said tread portion and anchored in bead portions for securing the tire to a wheel, the tire further comprising: a carcass ply having at least two layers extending between the bead portions and including parallel reinforcing cords oriented relative to the tire equatorial plane at an angle greater than about 10° and less than about 45°, the cords of said at least two layers being mutually oblique; an elastomeric shear layer disposed radially outward of said reinforced ply; and a membrane adhered to the radially outward extent of said elastomeric shear layer, wherein said membrane and a portion of said carcass ply disposed radially inward of said shear layer each have a longitudinal tensile modulus greater than the shear modulus of said shear layer.
Claim 2
Dependent Claim
142 words
A structurally supported resilient tire, comprising a ground contacting tread portion and sidewall portions extending radially inward from said tread portion and anchored in bead portions for securing the tire to a wheel, the tire further comprising: a carcass ply having at least two layers extending between the bead portions and including parallel reinforcing cords oriented relative to the tire equatorial plane at an angle greater than about 10° and less than about 45°, the cords of said at least two layers being mutually oblique; an elastomeric shear layer disposed radially outward of said reinforced ply; and a membrane adhered to the radially outward extent of said elastomeric shear layer, wherein said membrane and a portion of said carcass ply disposed radially inward of said shear layer each have a longitudinal tensile modulus greater than the shear modulus of said shear layer.
Claim 3
Dependent Claim
39 words
The tire as claimed in claim 1 , wherein the reinforcing cords of the carcass ply are disposed at an angle in a range of about 15° to about 20° to the tire equatorial plane in a tire summit.
Claim 4
Dependent Claim
38 words
The tire as claimed in claim 1 , wherein the reinforcing cords of the carcass ply are disposed at an angle in a range of about 30° to about 60° to the equatorial plane in the sidewall portions.
Claim 5
Dependent Claim
18 words
The tire as claimed in claim 1 , wherein said carcass ply comprises two sheets of reinforcing cords.
Claim 6
Dependent Claim
35 words
The tire as claimed in claim 1 , wherein said carcass ply is a single sheet of reinforcing cords disposed to wrap around the beads and with its free ends overlapping at the equatorial plane.
Claim 7
Dependent Claim
19 words
The tire as claimed in claim 1 , wherein the shear layer is adhered directly to the carcass ply.
Claim 8
Dependent Claim
43 words
The tire as claimed in claim 1 , wherein a ratio of the longitudinal tensile modulus of said portion of the reinforced carcass ply radially inward of the shear layer to the shear modulus of said shear layer is at least about 100:1.
Claim 9
Dependent Claim
32 words
The tire as claimed in claim 1 , wherein a ratio of the longitudinal tensile modulus of said membrane to the shear modulus of said shear layer is at least about 100:1.
Claim 10
Dependent Claim
32 words
The tire as claimed in claim 8 , wherein the ratio of the longitudinal tensile modulus of said membrane to the shear modulus of said shear layer is at least about 1000:1.
Claim 11
Dependent Claim
43 words
The tire as claimed in claim 1 , wherein said membrane comprises layers of essentially inextensible cord reinforcements embedded in an elastomeric coating layer having a shear modulus of elasticity at least equal to the shear modulus of elasticity of said shear layer.
Claim 12
Dependent Claim
29 words
The tire as claimed in claim 10 , wherein the cord reinforcements of said membrane form an angle with the tire circumferential direction of between about 10° and 45°.
Claim 13
Dependent Claim
45 words
The tire as claimed in claim 1 , further comprising a second membrane disposed between the shear layer and the carcass ply and adhered to the shear layer, the second membrane having a longitudinal tensile modulus greater than the shear modulus of said shear layer.
Claim 14
Dependent Claim
44 words
The tire as claimed in claim 12 , wherein said second membrane comprises layers of essentially inextensible cord reinforcements embedded in an elastomeric coating layer having a shear modulus of elasticity at least equal to the shear modulus of elasticity of said shear layer.
Claim 15
Dependent Claim
30 words
The tire as claimed in claim 13 , wherein the cord reinforcements of said second membrane form an angle with the tire circumferential direction of between about 10° and 45°.
Claim 16
Dependent Claim
26 words
The tire as claimed in claim 1 , wherein the tire has a counterdeflection stiffness per unit contact area width greater than 0.1 DaN/mm 2 .
Claim 17
Dependent Claim
54 words
The tire as claimed in claim 1 , wherein G·h≈P·R, wherein G is the shear modulus of elasticity of said shear layer, h is the radial thickness of said shear layer, P is a predetermined ground contact pressure for the tire and R is the radial position of the outermost extent of said membrane.
Claim 18
Dependent Claim
19 words
The tire as claimed in claim 1 , where said sidewall portions are rectilinear in the tire meridian plane.
Claim 19
Dependent Claim
25 words
The tire as claimed in claim 17 , wherein said sidewall portion has a maximum thickness 20% of the radial section height of said tire.
Claim 20
Dependent Claim
25 words
The tire as claimed in claim 17 , wherein said sidewall portion has a maximum thickness 10% of the radial section height of said tire.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2009-01-09 | 2009-07-11 | 2010-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2013-01-09 | 2013-07-11 | 2014-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2017-01-09 | 2017-07-11 | 2018-01-10 | $7700.00 | Window Closed / Lapsed |