US4377193A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pneumatic tire and method for making same
Assignee: Goodyear Tire and Rubber Co
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Filing: 1980-12-05
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Granted: 1983-03-22
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Expires: 2000-12-05
Abstract
Abstract An improved pneumatic tire and improved method for building same on a high crown building drum. The lower bead portion of the tire is provided with an additional reinforcing ply structure which is wrapped about a substantially inextensible bead wire. An improved method of building a tire on a high crown building drum wherein the additional reinforcing ply structure in the bead area is placed in tension during vulcanization.
Inventors
- 👤 Grahame N. W. Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 06:56
CPC Classifications
B; B60; B60C; B60C15/00; B60C15/04; B60C15/05; B29; B29D; B29D30/00; B29D30/06; B29D30/08; B29D30/20; B29D30/32; B29D30/48; B29D2030/486; Y; Y10; Y10T; Y10T152/00; Y10T152/10; Y10T152/10495; Y10T152/10819; Y10T152/10828; Y10T152/10855
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
236 words
A large pneumatic tire having a ground-engaging tread portion, a pair of bead portions said bead portions each having a substantially inextensible bead core, a pair of sidewall portions, each of said sidewall portions extending from one of said lateral ends of said tread portions radially inward terminating at one of said bead portions, respectively, a carcass reinforcing structure extending circumferentially about said tire from one of said bead portions through said sidewall portions and said tread portion terminating in the other bead portion, said carcass structure having its lateral ends wrapped about each of said bead cores respectively, characterized by a second pair of reinforcing bead cores each being disposed axially outward of each of said respective bead cores, said carcass reinforcing structure and said lateral ends of said carcass structure, a second reinforcing structure is wrapped about each of said second reinforcing bead cores and extends radially outward with respect to the axis of rotation of said tire terminating prior to reaching the maximum section width of the tire, wherein said second reinforcing structure constitutes the exclusive reinforcement wrapped around each of said second reinforcing bead cores, an elastomeric spacer is disposed between said second reinforcing structure and said lateral ends of said carcass structure, said tire having a sufficient amount of elastomeric material adjacent said second reinforcing structure such that during vulcanization of said tire said second reinforcing structures are placed in tension.
Claim 2
Dependent Claim
236 words
A large pneumatic tire having a ground-engaging tread portion, a pair of bead portions said bead portions each having a substantially inextensible bead core, a pair of sidewall portions, each of said sidewall portions extending from one of said lateral ends of said tread portions radially inward terminating at one of said bead portions, respectively, a carcass reinforcing structure extending circumferentially about said tire from one of said bead portions through said sidewall portions and said tread portion terminating in the other bead portion, said carcass structure having its lateral ends wrapped about each of said bead cores respectively, characterized by a second pair of reinforcing bead cores each being disposed axially outward of each of said respective bead cores, said carcass reinforcing structure and said lateral ends of said carcass structure, a second reinforcing structure is wrapped about each of said second reinforcing bead cores and extends radially outward with respect to the axis of rotation of said tire terminating prior to reaching the maximum section width of the tire, wherein said second reinforcing structure constitutes the exclusive reinforcement wrapped around each of said second reinforcing bead cores, an elastomeric spacer is disposed between said second reinforcing structure and said lateral ends of said carcass structure, said tire having a sufficient amount of elastomeric material adjacent said second reinforcing structure such that during vulcanization of said tire said second reinforcing structures are placed in tension.
Claim 3
Dependent Claim
17 words
A pneumatic tire according to claim 1 further characterized by said tire being a large earthmover tire.
Claim 4
Dependent Claim
26 words
The invention according to claims 1 or 2 further characterized by said second reinforcing structure comprising two plies of fabric reinforcement which form four ply layers.
Claim 5
Dependent Claim
36 words
The invention according to claim 1 or 2 further characterized in that said second reinforcing structure terminates at a distance from the nominal rim diameter of approximately 25 percent of the section height of said tire.
Claim 6
Dependent Claim
20 words
The invention according to claim 1 or 2 further characterized by said second reinforcing structure having cords made of nylon.
Claim 7
Dependent Claim
34 words
The invention according to claim 1 or 2 further characterized in that the included angle between adjacent ply layers of said second reinforcing structure is at least 20° and no greater than about 140°.
Claim 8
Dependent Claim
26 words
The invention according to claim 1 or 2 further characterized by the included angle between adjacent ply layers of said second reinforcing structure being approximately 25°.
Claim 9
Dependent Claim
31 words
The invention according to claim 1 or 2 further characterized in that said second reinforcing bead cores are located radially inward of the radially outermost part of said first bead cores.
Claim 10
Dependent Claim
33 words
The invention according to claim 1 or 2 further characterized in that said second reinforcing bead cores are located at about the same radial position as the center of said first bead cores.
Claim 11
Dependent Claim
21 words
The invention according to claim 1 or 2 further characterized by said second reinforcing bead cores comprising a single metal wire.
Claim 12
Dependent Claim
20 words
The invention according to claim 1 or 2 further characterized in that said pneumatic tire is a large earthmover tire.
Claim 13
Dependent Claim
45 words
The invention according to claim 1 or 2 further characterized by a carcass structure comprising at least one layer of parallel cords, said cords being oriented at an angle in the range between 75° and 90° with respect to the mid-circumferential centerplane of said tire.
Claim 14
Independent Claim
189 words
A method of building a tire on a high crown building drum comprising the steps of: providing a carcass reinforcing structure about the circumference of said building drum; providing a pair of substantially inextensible bead cores radially about said structure and adhering thereto said bead cores in axially spaced apart position; forcing the lateral ends of said carcass reinforcing structure about said bead cores; providing a fabric reinforcing structure adjacent each bead core, said reinforcing structure comprising of at least one cord reinforcing strip; providing a second substantially inextensible reinforcing bead core about each of said fabric reinforcing structures; folding the lateral ends of said fabric reinforcing structure about said second substantially inextensible bead cores; providing an elastomeric sidewall structure about said reinforcing structure; shaping the tire assembly to a substantial toroidal configuration; providing an elastomeric tread structure circumferentially about the outer periphery of said tire; vulcanizing said tire to its final configuration, said tire having a sufficient amount of elastomeric material adjacent said reinforcing structures so that during vulcanization said elastomeric material flows radially outward thereby causing said cords of said reinforcement strips to be placed in tension.
Claim 15
Independent Claim
189 words
A method of building a tire on a high crown building drum comprising the steps of: providing a carcass reinforcing structure about the circumference of said building drum; providing a pair of substantially inextensible bead cores radially about said structure and adhering thereto said bead cores in axially spaced apart position; forcing the lateral ends of said carcass reinforcing structure about said bead cores; providing a fabric reinforcing structure adjacent each bead core, said reinforcing structure comprising of at least one cord reinforcing strip; providing a second substantially inextensible reinforcing bead core about each of said fabric reinforcing structures; folding the lateral ends of said fabric reinforcing structure about said second substantially inextensible bead cores; providing an elastomeric sidewall structure about said reinforcing structure; shaping the tire assembly to a substantial toroidal configuration; providing an elastomeric tread structure circumferentially about the outer periphery of said tire; vulcanizing said tire to its final configuration, said tire having a sufficient amount of elastomeric material adjacent said reinforcing structures so that during vulcanization said elastomeric material flows radially outward thereby causing said cords of said reinforcement strips to be placed in tension.
Claim 16
Independent Claim
163 words
A method of building a tire on a high crown building drum comprising the steps of: providing a carcass reinforcing structure about the circumference of said building drum; providing a pair of substantially inextensible bead cores radially about said structure and adhering thereto said bead cores in axially spaced apart position; folding the lateral ends of said reinforcing structure about said bead cores; providing a second preassembled reinforcing structure about each of said cores, said preassembled structure comprising at least one fabric strip folded about a second inextensible bead core; providing an elastomeric sidewall structure about said reinforcing structure; shaping the assembly to a substantially toroidal configuration; providing an elastomeric tread structure circumferentially about the outer periphery of said tire; vulcanizing said tire to its final configuration, said tire having a sufficient amount of elastomeric material adjacent said reinforcing structures so that during vulcanization said elastomeric material flows radially outward thereby causing said cords of said reinforcement strips to be placed in tension.
Claim 17
Independent Claim
163 words
A method of building a tire on a high crown building drum comprising the steps of: providing a carcass reinforcing structure about the circumference of said building drum; providing a pair of substantially inextensible bead cores radially about said structure and adhering thereto said bead cores in axially spaced apart position; folding the lateral ends of said reinforcing structure about said bead cores; providing a second preassembled reinforcing structure about each of said cores, said preassembled structure comprising at least one fabric strip folded about a second inextensible bead core; providing an elastomeric sidewall structure about said reinforcing structure; shaping the assembly to a substantially toroidal configuration; providing an elastomeric tread structure circumferentially about the outer periphery of said tire; vulcanizing said tire to its final configuration, said tire having a sufficient amount of elastomeric material adjacent said reinforcing structures so that during vulcanization said elastomeric material flows radially outward thereby causing said cords of said reinforcement strips to be placed in tension.
Claim 18
Dependent Claim
27 words
The method according to claim 13 or 14 further characterized by providing a reinforcing belt structure circumferentially about said tire prior to applying said elastomeric tread structure.
Claim 19
Dependent Claim
26 words
The method according to claim 13 or 14 further characterized by providing an elastomeric spacer adjacent each of said lateral ends of said carcass reinforcing structure.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-03-21 | 1986-09-20 | 1987-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-03-21 | 1990-09-20 | 1991-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-03-21 | 1994-09-20 | 1995-03-22 | $7700.00 | Window Closed / Lapsed |