Patent US4208243A successfully refreshed from Google Patents.
US4208243A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thin film treatment apparatus
Assignee: Oesterreichische Studiengesellschaft fuer Atomenergie GmbH
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Filing: 1978-07-05
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Granted: 1980-06-17
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Expires: 1998-07-05
Abstract
Abstract A thin film treatment apparatus, especially a thin film evaporator, comprising a rotor having a shaft and a rotationally symmetrical wall arranged about said rotor. The rotor is equipped with essentially radial, elastically resilient scraper elements extending up to such wall. These scraper elements are of essentially blade-shaped construction, and these scraper elements and the rotor are at least partially covered with an elastomeric material.
Inventors
- 👤 Karl Knotik
- 👤 Peter Leichter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 11:53
CPC Classifications
B; B01; B01D; B01D1/00; B01D1/22; B01D1/222; B01D1/223; B01D1/225; Y; Y10; Y10S; Y10S159/00; Y10S159/15
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
91 words
A thin film evaporator, comprising: a rotor having a shaft and a rotationally symmetrical wall arranged about said rotor, said rotor having essentially radial, elastically resilient scraper elements having a base and extending nearly up to the region of said wall, said scraper elements having no contact with the wall and each of said scraper elements having a blade configuration, means at the rotor for connecting each of said scraper elements at its base with the rotor, and means for surrounding said connecting means and said rotor with an elastomeric material.
Claim 2
Dependent Claim
91 words
A thin film evaporator, comprising: a rotor having a shaft and a rotationally symmetrical wall arranged about said rotor, said rotor having essentially radial, elastically resilient scraper elements having a base and extending nearly up to the region of said wall, said scraper elements having no contact with the wall and each of said scraper elements having a blade configuration, means at the rotor for connecting each of said scraper elements at its base with the rotor, and means for surrounding said connecting means and said rotor with an elastomeric material.
Claim 3
Dependent Claim
14 words
The evaporator as defined in claim 1, wherein: said elastomeric material comprises silicone rubber.
Claim 4
Dependent Claim
13 words
The evaporator as defined in claim 1, wherein: said elastomeric material comprises fluoroelastomers.
Claim 5
Dependent Claim
13 words
The evaporator as defined in claim 1, wherein: said elastomeric material comprises rubber.
Claim 6
Dependent Claim
24 words
The evaporator as defined in claim 1, further comprising: means for at least partially movably connecting each of said scraper elements with said rotor.
Claim 7
Dependent Claim
22 words
The evaporator as defined in claim 1, wherein: said rotor is structured such that each of said scraper elements is mounted therein.
Claim 8
Dependent Claim
24 words
The evaporator as defined in claim 1, further comprising: holder means for connecting each of the scraper elements with the shaft of the rotor.
Claim 9
Dependent Claim
32 words
The evaporator as defined in claim 1, wherein: said scraper elements and said surrounding means with the elastomeric material form a unit which can be pushed onto the shaft of the rotor.
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) | 1983-06-17 | 1983-12-17 | 1984-06-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-06-17 | 1987-12-17 | 1988-06-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-06-17 | 1991-12-17 | 1992-06-17 | $7700.00 | Window Closed / Lapsed |