US3265115A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vertical cylindrical film evaporator with self-rotatable wiper
Assignee: Chicago Bridge and Iron Co
•
Filing: 1964-06-01
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Granted: 1966-08-09
•
Expires: 1984-06-01
Abstract
No abstract record available.
Inventors
- 👤 Maier Richard Charles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:33
CPC Classifications
B; B01; B01D; B01D1/00; B01D1/06; B01D1/065
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
82 words
AN EVAPORATING PROCESSING VESSEL FOR CONCENTRATING LIQUIDS AND THUS GENERATING VAPORS, HAVING AT LEAST ONE VERTICAL ELONGATED TUBE, MEANS FOR FEEDING A LIQUID TO THE UPPER END OF THE TUBE TO GRAVITATE DOWNWARDLY AS A FILM ON THE INNER SURFACE OF THE TUBE, ROTATABLE WIPING MEANS POSITIONED IN THE TUBE TO WIPE THE SURFACE OF THE TUBE AND THEREBY CONTROL THE THICKNESS OF LIQUID FILM THEREON, SAID WIPING MEANS COMPRISING ROTATABLE HELICOIDAL SCREW MEANS, SAID SCREW MEANS BEING FREELY PIVOTABLE FOR ROTA-
Claim 2
Dependent Claim
82 words
AN EVAPORATING PROCESSING VESSEL FOR CONCENTRATING LIQUIDS AND THUS GENERATING VAPORS, HAVING AT LEAST ONE VERTICAL ELONGATED TUBE, MEANS FOR FEEDING A LIQUID TO THE UPPER END OF THE TUBE TO GRAVITATE DOWNWARDLY AS A FILM ON THE INNER SURFACE OF THE TUBE, ROTATABLE WIPING MEANS POSITIONED IN THE TUBE TO WIPE THE SURFACE OF THE TUBE AND THEREBY CONTROL THE THICKNESS OF LIQUID FILM THEREON, SAID WIPING MEANS COMPRISING ROTATABLE HELICOIDAL SCREW MEANS, SAID SCREW MEANS BEING FREELY PIVOTABLE FOR ROTA-
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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) | 1969-08-08 | 1970-02-07 | 1970-08-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-08 | 1974-02-07 | 1974-08-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-08 | 1978-02-07 | 1978-08-09 | $7700.00 | Window Closed / Lapsed |