US4313992A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Centrifuge screen
Assignee: Sulzer Escher Wyss AG
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Filing: 1979-05-14
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Granted: 1982-02-02
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Expires: 1999-05-14
Abstract
Abstract A centrifuge screen, more particularly for a thrust-type centrifuge, having screen bars consisting of a hard material and extending axially of the centrifuge drum, said bars being fixed on a supporting frame, wherein the screen bars extending axially of the centrifuge drum bear over the entire length on the supporting frame and are connected to the supporting frame by an adhesive bonding which extends over the full length of the screen bars.
Inventors
- 👤 Leonhard Spiewok
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 03:26
CPC Classifications
B; B04; B04B; B04B7/00; B04B7/08; B04B7/12; B04B7/16; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1089; Y10T156/109; Y10T29/00; Y10T29/49; Y10T29/496; Y10T29/49604; Y10T428/00; Y10T428/24; Y10T428/24273; Y10T428/24298; Y10T428/24314; Y10T428/24322; Y10T428/24331; Y10T428/24802; Y10T428/24826; Y10T428/24851
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
106 words
A screen for the drum of a centrifuge comprising a supporting frame, and a plurality of transversely spaced screen bars which are oriented to extend axially of the drum for which the screen is intended, are made of a hard material, and serve to support material which is being centrifuged as the material moves axially through the drum, and characterized in that the frame is a perforated plate so constructed that it supports each bar over the entire length of the bar; and in that each bar is connected to the frame by an adhesive joint which also extends over the entire length of the bar.
Claim 2
Dependent Claim
106 words
A screen for the drum of a centrifuge comprising a supporting frame, and a plurality of transversely spaced screen bars which are oriented to extend axially of the drum for which the screen is intended, are made of a hard material, and serve to support material which is being centrifuged as the material moves axially through the drum, and characterized in that the frame is a perforated plate so constructed that it supports each bar over the entire length of the bar; and in that each bar is connected to the frame by an adhesive joint which also extends over the entire length of the bar.
Claim 3
Dependent Claim
25 words
A centrifuge screen as defined in claim 1 in which the perforations of said plate are centered in the transverse spaces between the screen bars.
Claim 4
Dependent Claim
130 words
A screen for the drum of a centrifuge comprising a supporting frame, and a plurality of transversely spaced screen bars which are oriented to extend axially of the drum for which the screen is intended, are made of a hard material, and serve to support material which is being centrifuged as the material moves axially through the drum, and characterized in that the frame is a grid having members which extend transversely of said screen bars and grating bars which extend axially of the screen bars and on which the screen bars rest, whereby the frame supports each bar over the entire length of the bar; and in that each bar is connected to the frame by an adhesive joint which also extends over the entire length of the bar.
Claim 5
Dependent Claim
130 words
A screen for the drum of a centrifuge comprising a supporting frame, and a plurality of transversely spaced screen bars which are oriented to extend axially of the drum for which the screen is intended, are made of a hard material, and serve to support material which is being centrifuged as the material moves axially through the drum, and characterized in that the frame is a grid having members which extend transversely of said screen bars and grating bars which extend axially of the screen bars and on which the screen bars rest, whereby the frame supports each bar over the entire length of the bar; and in that each bar is connected to the frame by an adhesive joint which also extends over the entire length of the bar.
Claim 6
Dependent Claim
36 words
A centrifuge screen as defined in claim 1 or claim 3 in which the adhesive joint between each screen bar and the frame includes mating surfaces of the bar and the frame which have different curvatures.
Claim 7
Dependent Claim
22 words
A centrifuge screen as defined in claim 1 or claim 3 in which the adhesive joint includes an intermediate layer of rubber.
Claim 8
Dependent Claim
42 words
A centrifuge screen as defined in claim 1 or claim 3 in which the screen bars and the frame are so constructed that said adhesive joint consists of a multitude of small adhesive connections distributed over the entire length of the bar.
References Cited (Backward Citations)
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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) | 1985-02-01 | 1985-08-03 | 1986-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-02-01 | 1989-08-03 | 1990-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-02-01 | 1993-08-03 | 1994-02-02 | $7700.00 | Window Closed / Lapsed |