US3833445A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tire building apparatus for building tires
Assignee: National Standard Co
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Filing: 1972-01-14
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Granted: 1974-09-03
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Expires: 1992-01-14
Abstract
Abstract A tire building apparatus about which tire carcass material is laid for formation of the tire carcass material into substantially the form of a completed tire in which the tire beads lie axially inwardly of the circular inner end portions of the sidewall portions of the tire carcass material, in which the sidewall portions of the tire carcass material are reversely curved from the crown of the tire carcass material and the inner end portions of the sidewall portions of the tire carcass material as in a completed or cured tire, and in which suitable means, such as a pair of inflatable bag means are provided, one for effecting turning up the end portions of the tire carcass material to encase the tire beads with the tire carcass material subsequent to formation of the tire carcass material into the aforenoted configuration, and the other for applying sidewall components to the sidewall portions of the tire carcass material after the tire beads have been encased in the end portions of the tire carcass material. The tire building apparatus as aforenoted embodying an expandable and contractable intermediate drum, end drum assemblies at opposite ends of the intermediate drum for supporting tire carcass material embodying tire bead supporting and locking means at the inner ends of the end drums in an arrangement including carrier means for the end drum assemblies and in which the tire bead supporting and locking means may be positioned with respect to the carrier means in equidistant axially spaced apart relation with respect to the transverse centerline of the intermediate drum, and concentrically of the longitudinal axis of the apparatus in which the tire bead supporting and locking means in operative position lock tire beads inwardly of the ends of the tire carcass material characterized by the association therewith of a pair of the aforenoted inflatable bag means being carried by each of the end drum assemblies in which the tire bead supporting and locking means in operative position lock the inner ends of the dual inflatable bag means together with the outer ends of the tire carcass material at the tire beads together with the tire beads, tire carcass back-up means operative to take the reaction of inflation of ply turn-up bag means to encase tire beads in the end portions after formation of the tire carcass material into the aforenoted configuration and inflation thereafter of sidewall applicator bag means of the pair of inflatable bag means operable together with bag pusher means for said sidewall applicator bag means to apply sidewall components to the tire carcass material. The apparatus as aforenoted in which the drum is pressurized to take the reaction of inflation of the inflatable bag means in the application of the sidewall components, and in which the formed tire carcass material is shaped to conform or substantially conform to that of a cured tire in the bead area.
Inventors
- 👤 E Mallory
- 👤 E Bryant
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:58
CPC Classifications
B; B29; B29D; B29D30/00; B29D30/06; B29D30/08; B29D30/20; B29D30/32; B29D30/36; B29D30/24; B29D30/26; B29D2030/2635; B29D2030/3214; B29D2030/3221; B29D2030/3228; B29D2030/3235; B29D2030/3242
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
265 words
In a tire building apparatus having an intermediate radially expandable drum, intermediate drum expanding and contracting means associated with said intermediate expandable drum to dispose the same in positions defining rigid supporting surfaces of different radii, an end drum assembly at each end of said intermediate drum, said intermediate drum and said end drum assemblies providing for support of tire carcass material therearound, the combination therewith of inflatable dual bag means supported by said end drum assemblies comprising a low pressure bag means and a high pressure bag means, said high pressure bag means being adapted upon inflation thereof to form ply turn-ups encasing the tire beads with the tire carcass material on said end drum assemblies, rigid tire carcass back-up means attached to the inner ends of said end drum assemblies, said back-up means in the inward positions of said end drum assemblies being adapted to be disposed against the inner surfaces of the tire carcass material in the tire bead area in the expanded position of the intermediate drum forming the tire carcass material into expanded tire shape form, said back-up means serving to take the reaction of inflation of said high pressure bag means in encasing the tire beads with the carcass material in forming the ply turn-ups, said low pressure bag means being adapted upon inflation thereof to apply sidewall components to the tire carcass material radially outwardly of the tire beads, and said high pressure bag means and said low pressure bag means providing uninterrupted contact with the outer surfaces of the ply turn-ups and sidewalls of the tire carcass.
Claim 2
Dependent Claim
265 words
In a tire building apparatus having an intermediate radially expandable drum, intermediate drum expanding and contracting means associated with said intermediate expandable drum to dispose the same in positions defining rigid supporting surfaces of different radii, an end drum assembly at each end of said intermediate drum, said intermediate drum and said end drum assemblies providing for support of tire carcass material therearound, the combination therewith of inflatable dual bag means supported by said end drum assemblies comprising a low pressure bag means and a high pressure bag means, said high pressure bag means being adapted upon inflation thereof to form ply turn-ups encasing the tire beads with the tire carcass material on said end drum assemblies, rigid tire carcass back-up means attached to the inner ends of said end drum assemblies, said back-up means in the inward positions of said end drum assemblies being adapted to be disposed against the inner surfaces of the tire carcass material in the tire bead area in the expanded position of the intermediate drum forming the tire carcass material into expanded tire shape form, said back-up means serving to take the reaction of inflation of said high pressure bag means in encasing the tire beads with the carcass material in forming the ply turn-ups, said low pressure bag means being adapted upon inflation thereof to apply sidewall components to the tire carcass material radially outwardly of the tire beads, and said high pressure bag means and said low pressure bag means providing uninterrupted contact with the outer surfaces of the ply turn-ups and sidewalls of the tire carcass.
Claim 3
Dependent Claim
62 words
The tire building apparatus of claim 1 characterized by the provision of bag pusher means adapted upon inflation of said low pressure bag means to engage said low pressure bag means to apply the sidewall component to the tire carcass material when shaped to torus configuration by movement of the movable intermediate drum expanding and contracting means to expand the intermediate drum.
Claim 4
Dependent Claim
34 words
The tire building apparatus of claim 1 characterized by pressurizing the interior of the apparatus to take the reaction force in the application of sidewall components to the sides of the tire carcass material.
Claim 5
Dependent Claim
52 words
The tire building apparatus of claim 3 in which the intermediate drum and expanding means includes supporting members having outer surfaces defining a crown surface while the interior of the apparatus is under pressure and during movement of said intermediate expandable drum to form the tire carcass material into substantially torus configuration.
Claim 6
Dependent Claim
236 words
The tire building apparatus of claim 1 in which shaft means extend longitudinally through said intermediate expandable drum with opposite end portions extending axially outwardly thereof, carrier means mounted for axial movement toward and away from each other on said opposite end portions of said shaft means, said end drum assemblies mounted on said carrier means at opposite ends of said intermediate drum, tire bead supporting and locking means at the inner ends of said drum assemblies, locating means connected with said tire bead supporting and locking means to move the latter to operative and inoperative positions with said tire bead supporting and locking means in operative position being adapted to lock in axially spaced apart relation equidistant of the transverse centerline of said intermediate drum and concentrically of the longitudinal axis of the apparatus, the tire beads at the outer ends of the tire carcass material surrounding said intermediate drum assemblY and the inner ends of said end drum assemblies in which said inflatable bag means are carried by each of said end drum assemblies with the inner ends of said dual inflatable bag means in the operative position of said bead supporting and locking means being clamped together with the outer ends of the tire carcass material at the tire beads, and positioning means for positioning said tire bead back-up means at the inner surfaces of the tire carcass material opposite the tire beads.
Claim 7
Dependent Claim
95 words
The tire building apparatus of claim 5 characterized by said end drum assemblies having ply tensioning means associated therewith comprising tension cylinder means, piston means for said carrier means disposed in said tension cylinder means, and means for admitting fluid under pressure into said tension cylinder at one end thereof to tension the tire carcass material between said tire bead supporting and locking means in the operative positions thereof and upon movement of the axially movable expanding and contracting means for the intermediate drum toward each other forming the tire carcass material into torus configuration.
Claim 8
Dependent Claim
40 words
The tire building apparatus of claim 6 in which said intermediate expandable drum embodies radially and circumferentially movable supporting members which in their outer positions define a crown surface substantially conforming to that of the crown of a cured tire.
Claim 9
Dependent Claim
94 words
The tire building apparatus of claim 6 characterized by the provision of means for bleeding fluid under pressure from said one end of said tension cylinder means, and means for admitting fluid under pressure to the other end of said tension cylinder means whereby said end drum assemblies dispose said tire bead supporting and locating means axially inwardly of the sidewalls of the tire carcass material which, together with means for admitting fluid under pressure into said tire carcass material, form the latter into the shape of a cured tire at the bead area.
Claim 10
Dependent Claim
35 words
The tire building apparatus of claim 8 characterized by the provision of stroke limiting means for engaging the outer ends of said carrier means to limit the inward axial positions of said tension cylinder means.
Claim 11
Dependent Claim
40 words
The tire building apparatus of claim 6 characterized by said tensioning means having associated therewith tire bead supporting and locating means associated with said tensioning means for disposing said bead supporting and locking means to their operative and inoperative positions.
Claim 12
Dependent Claim
30 words
The tire building apparatus of claim 6 characterized by said tensioning means having locating means including piston means for positioning said tire bead back-up means to operative and inoperative positions.
Claim 13
Dependent Claim
192 words
In a tire building apparatus the combination of an intermediate expandable drum, and an end drum assembly at each end of said intermediate drum, means associated with said intermediate expandable drum to dispose the drum in positions defining supporting surfaces of different radii, tire carcass material supported on said apparatus adapted upon expansion of said intermediate drum to displace said tire carcass material into tire shape form having an outer peripheral crown portion, radially inwardly extending sidewall portions having tire bead areas at their inner ends, and outer end portions of the tire carcass material extending axially outwardly from said sidewall portions and supported on said end drum assemblies, rigid back-up means for the bead areas of the tire carcass material associated with said end drum assemblies providing for curving said sidewall portions axially outwardly adjacent to the bead areas after expansion of said intermediate drum, and ply turn-up means for turning up the outer end portions of said tire carcass material to encase tire beads at said bead areas and firmly apply the same to the outer surfaces of said sidewall portions outwardly of the inner ends of said sidewall portions.
Claim 14
Dependent Claim
192 words
In a tire building apparatus the combination of an intermediate expandable drum, and an end drum assembly at each end of said intermediate drum, means associated with said intermediate expandable drum to dispose the drum in positions defining supporting surfaces of different radii, tire carcass material supported on said apparatus adapted upon expansion of said intermediate drum to displace said tire carcass material into tire shape form having an outer peripheral crown portion, radially inwardly extending sidewall portions having tire bead areas at their inner ends, and outer end portions of the tire carcass material extending axially outwardly from said sidewall portions and supported on said end drum assemblies, rigid back-up means for the bead areas of the tire carcass material associated with said end drum assemblies providing for curving said sidewall portions axially outwardly adjacent to the bead areas after expansion of said intermediate drum, and ply turn-up means for turning up the outer end portions of said tire carcass material to encase tire beads at said bead areas and firmly apply the same to the outer surfaces of said sidewall portions outwardly of the inner ends of said sidewall portions.
Claim 15
Dependent Claim
30 words
The apparatus of claim 12 characterized by the provision of sidewall applicator means for applying tire sidewall cOmponents to the outer surfaces of said sidewalls of said tire carcass material.
Claim 16
Dependent Claim
60 words
The apparatus of claim 12 in which said ply turn-up means comprises inflatable ply turn-up bag means upon which the outer end portions of said tire carcass material are supported, said inflatable bag ply turn-up means, when inflated, encasing the tire beads with the tire carcass material thereon and applying the same to the sidewalls of the tire carcass material.
Claim 17
Dependent Claim
50 words
The apparatus of claim 14 wherein said sidewall applicator means comprises sidewall inflatable bag means for supporting tire wall components thereon, and pusher means adapted upon inflation of said sidewall inflatable bag means with said sidewall components to apply said sidewall components to the sidewalls of said tire carcass material.
Claim 18
Dependent Claim
31 words
The apparatus of claim 15 characterized by means for pressurizing the interior of the tire carcass upon the application of the sidewall components to the sidewalls of the tire carcass material.
Claim 19
Dependent Claim
22 words
The apparatus of claim 1 in which said high pressure ply turn-up bag means is disposed within said low pressure bag means.
Claim 20
Dependent Claim
37 words
The apparatus of claim 1 in which the inner end of said high pressure bag means is integral with the inner end of said low pressure bag means at the bead areas of the tire carcass material.
Claim 21
Dependent Claim
65 words
The apparatus of claim 1 in which said dual bag means comprises inflatable ply turn-up bag means and side wall applicator means comprising side wall applicator bag means and in which said inflatable ply turn-up bag means overlies the inner end of said inflatable side wall bag means in the deflated positions of said ply turn-up bag means and said side wall applicator bag means.
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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) | 1977-09-02 | 1978-03-04 | 1978-09-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-02 | 1982-03-04 | 1982-09-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-02 | 1986-03-04 | 1986-09-03 | $7700.00 | Window Closed / Lapsed |