US3690795A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bladder clamping device for press for shaping and curing pneumatic tires
Assignee: Kobe Steel Ltd
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Filing: 1970-10-05
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Granted: 1972-09-12
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Expires: 1990-10-05
Abstract
Abstract A press for shaping and curing tires having an inflatable bladder with a device for positively clamping the lower bead of the bladder between a lower stationary bead ring and a lower plate ring connected with the vertical cylinder of the center mechanism wherein the vertical cylinder is raised and lowered by an actuating device having a drive unit, a power converting mechanism transforming the output of the drive unit into mechanical motion acting in a direction axially of the vertical cylinder, and a motion transmitting device connecting the output of the power converting mechanism to the vertical cylinder.
Inventors
- 👤 Shoushi Yoshida
- 👤 Atsuaki Iwama
- 👤 Takashi Okada
- 👤 Tetuo Suda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 02:59
CPC Classifications
B; B29; B29D; B29D30/00; B29D30/06; B29D30/0601; B29D30/0645
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
149 words
In a press for shaping and curing pneumatic tires having an inflatable bladder, a stationary lower bead ring, a center mechanism including a vertical cylinder, a lower plate ring and an actuating device for positively clamping the lower bead of the bladder between the stationary lower bead ring and the lower plate ring, the actuating device being connected to the vertical cylinder of the center mechanism and comprising, drive unit means providing an output motion in a direction generally transverse to the vertical cylinder, toggle link means transforming the output motion of said drive unit means into mechanical motion acting in a direction axially of the vertical cylinder to raise and lower the vertical cylinder, and motion transmitting means connecting the output of said toggle link means to the vertical cylinder, said motion transmitting means including a lever having slot means accommodating pin means attached to the vertical cylinder.
Claim 2
Dependent Claim
149 words
In a press for shaping and curing pneumatic tires having an inflatable bladder, a stationary lower bead ring, a center mechanism including a vertical cylinder, a lower plate ring and an actuating device for positively clamping the lower bead of the bladder between the stationary lower bead ring and the lower plate ring, the actuating device being connected to the vertical cylinder of the center mechanism and comprising, drive unit means providing an output motion in a direction generally transverse to the vertical cylinder, toggle link means transforming the output motion of said drive unit means into mechanical motion acting in a direction axially of the vertical cylinder to raise and lower the vertical cylinder, and motion transmitting means connecting the output of said toggle link means to the vertical cylinder, said motion transmitting means including a lever having slot means accommodating pin means attached to the vertical cylinder.
Claim 3
Dependent Claim
37 words
Apparatus according to claim 1, wherein said drive unit means is a fluid cylinder and said toggle link means mechanically locks to prevent accidental release in the event of loss of fluid pressure in said fluid cylinder.
Claim 4
Dependent Claim
30 words
Apparatus according to claim 1, wherein said toggle link means has adjusting means permitting selective variation of the positioN of the vertical cylinder relative to the stationary lower bead ring.
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) | 1975-09-12 | 1976-03-13 | 1976-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-09-12 | 1980-03-13 | 1980-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-09-12 | 1984-03-13 | 1984-09-12 | $7700.00 | Window Closed / Lapsed |