US3795578A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composite steam chamber for use on a traveling pulp mat
Assignee: Individual
•
Filing: 1972-05-30
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Granted: 1974-03-05
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Expires: 1992-05-30
Abstract
Abstract An elongated chamber, mounted to extend transversely above a pulp mat, includes parallel end walls connected by bottom side walls and a rounded top wall. Cross plates extend between the side walls, and a plurality of thoughts, forming the bottom of the chamber, are supported from the cross plates with their top edges spaced a slight distance apart for the discharge of steam therethrough. A steam delivery pipe extends along in the chamber supported above the cross plates. Water collecting in the valleys of the troughs is discharged through drain caps at the end walls.
Inventors
- 👤 J Dupasquier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:33
CPC Classifications
D; D21; D21F; D21F5/00; Y; Y10; Y10T; Y10T137/00; Y10T137/6851; Y10T137/6966
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) | 1977-03-04 | 1977-09-03 | 1978-03-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-04 | 1981-09-03 | 1982-03-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-04 | 1985-09-03 | 1986-03-05 | $7700.00 | Window Closed / Lapsed |