US3793426A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for curing endless elastomeric belts
Assignee: Individual
•
Filing: 1973-07-12
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Granted: 1974-02-19
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Expires: 1993-07-12
Abstract
Abstract The belts to be cured are tensioned over the periphery of a drum which is steam heated and rotated in a vertical plane. The drum is partially filled with water to provide a chilled zone in the region where the belts leave the drum upon initiation of drum rotation. A rotatable liquid outlet is clutch-coupled to rotate with the drum for lowering the liquid level at a rate corresponding with the rate of movement of a point fixed on the rotating drum. The drum rotates at a rate such that an uncured portion of belting initially contacting the top of the drum is completely cured as it leaves the bottom of the drum.
Inventors
- 👤 G Ritchie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 02:21
CPC Classifications
B; B29; B29D; B29D29/00; B29C; B29C35/00; B29C35/16; B29C2035/1616; B29C35/02; B29C35/04; B29C35/049; B29C71/00; B29C71/02; B29K; B29K2021/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-02-18 | 1977-08-20 | 1978-02-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-18 | 1981-08-20 | 1982-02-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-18 | 1985-08-20 | 1986-02-19 | $7700.00 | Window Closed / Lapsed |