Patent US3562767A successfully refreshed from Google Patents.
US3562767A
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US
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Apparatus for the continuous distribution of expandable liquides
Assignee: Rhone Poulenc SA
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Filing: 1968-11-01
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Granted: 1971-02-09
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Expires: 1988-11-01
Abstract
Abstract THE SPECIFICATION DESCRIBES AN APPARATUS FOR THE CONTINUOUS DISTRIBUTION OF EXPANDABLE LIQUIDS, SUCH AS POLYURETHANE, BETWEEN TWO FIXED, SMOOTH PLATE SURFACES. BETWEEN EACH OF THE FOILS AND ASSOCIATED PLATE SURFACES A FILM E.G. OF POLY (ETHYLENE GYLCOL TEREPHTHALATE) IS MOVED RELATIVE TO BOTH THE FOIL AND PLATE SURFACES, PREFERABLY IN THE OPPOSITE DIRECTION TO THE FOILS. THE COEFFICIENT OF SLIDING FRICTION BETWEEN THE FILMS AND FOILS IS LESS THAN 1, PREFERABLY LESS THAN 0.5.
Inventors
- 👤 Michel Mallet
- 👤 Georges Zeller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:08
CPC Classifications
B; B29; B29C; B29C44/00; B29C44/20; B29C44/30; B29L; B29L2007/00; B29L2009/00
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) | 1974-02-08 | 1974-08-10 | 1975-02-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-08 | 1978-08-10 | 1979-02-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-08 | 1982-08-10 | 1983-02-09 | $7700.00 | Window Closed / Lapsed |