Patent EP0040313A2 successfully refreshed from Google Patents.
US4039366A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for building green tires
Assignee: Bridgestone Corp
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Filing: 1975-10-23
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Granted: 1977-08-02
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Expires: 1995-10-23
Abstract
Abstract Method and apparatus for building green tires, wherein stitching means is mounted on a carrier which transfers a tire component to and around the circumference of another tire component laid on a tire building drum. The carrier in the form of a ring shape is adapted to be axially movable toward and away from the circumference of the tire building drum and has holding means for releasably holding a tire component and a green tire. The stitching means stitches the tire components together on the tire building drum while the carrier is surrounding the circumference of the tire building drum.
Inventors
- 👤 Toshinori Yabe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:42
CPC Classifications
B; B29; B29D; B29D30/00; B29D30/06; B29D30/08; B29D30/20; B29D30/28; B29D30/24; B29D30/26; B29D30/2607
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
154 words
An apparatus for building green tires, comprising: a tire building drum rotatably mounted on a housing and driven for rotation by a motor accommodated in said housing; a ring-shaped frame movable toward and away from an operating position where said ring-shaped frame surrounds the circumference of said tire building drum; tire component holding means including a plurality of tire component holders radially movably mounted on said ring-shaped frame at uniform space from each other for releasably holding a breaker-tread assembly during a green tire producing stage and a green tire after said green tire producing stage; and stitching means including a plurality of rotatable stitching rollers mounted on said ring-shaped frame in alternate relation with said tire component holders and movable toward and away from said tire building drum for stitching said breaker-tread assembly into tight contact with said carcass on said tire building drum while said ring-shaped frame is in said operating position.
Claim 2
Independent Claim
154 words
An apparatus for building green tires, comprising: a tire building drum rotatably mounted on a housing and driven for rotation by a motor accommodated in said housing; a ring-shaped frame movable toward and away from an operating position where said ring-shaped frame surrounds the circumference of said tire building drum; tire component holding means including a plurality of tire component holders radially movably mounted on said ring-shaped frame at uniform space from each other for releasably holding a breaker-tread assembly during a green tire producing stage and a green tire after said green tire producing stage; and stitching means including a plurality of rotatable stitching rollers mounted on said ring-shaped frame in alternate relation with said tire component holders and movable toward and away from said tire building drum for stitching said breaker-tread assembly into tight contact with said carcass on said tire building drum while said ring-shaped frame is in said operating position.
Claim 3
Dependent Claim
87 words
An apparatus as set forth in claim 1, wherein said ring-shaped frame has a circumferential groove formed on the outer periphery thereof and said tire component holding means further includes a plurality of piston cylinders circumferentially mounted at uniform space on the bottom of said circumferential groove in said ring-shaped frame and each having a radially inwardly projecting piston rod slidably engaged with each of radial holes formed in the ring-shaped frame and carrying an arcuate holding member at the extended inner end of said piston rod.
Claim 4
Dependent Claim
131 words
An apparatus as set forth in claim 2, wherein said stitching means further includes a plurality of piston cylinders circumferentially mounted on the bottom of said circumferential groove between said piston cylinders of said tire component holding means and each having a radially inwardly projecting piston rod slidably engaged with each of radial holes formed in the ring-shaped frame, one of said piston rod of said piston cylinder having at its inner end said rotatable stitching roller for stitching the mid-circumferential portion of said breaker-tread assembly into tight contact with said carcass, and one or more remaining piston rods of said piston cylinders each having a pair of said rotatable stitching rollers for stitching the outer sides of said mid-circumferential portion of said breaker-tread assembly into tight contact with said carcass.
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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) | 1980-08-01 | 1981-01-31 | 1981-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-08-01 | 1985-01-31 | 1985-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-08-01 | 1989-01-31 | 1989-08-02 | $7700.00 | Window Closed / Lapsed |