Patent US4692136A successfully refreshed from Google Patents.
US4692136A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Centrifuge
Assignee: Cobe Cardiovascular Inc
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Filing: 1986-02-25
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Granted: 1987-09-08
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Expires: 2006-02-25
Abstract
Abstract A centrifuge is provided which has a stationary core and a bowl rotatively mounted about the core. The bowl can be configured so that it does not taper inwardly from top to bottom. The bowl has an upwardly extending neck which receives the stationary core. To provide a seal between the core and bowl, a lip seal can be employed which is emplaced about an upwardly extending neck of the bowl and abuts an outwardly and downwardly extending nut formed integrally of the core or a face seal can be employed between a shoulder of the nut and a shoulder of the neck.
Inventors
- 👤 Louis W. Feldman
- 👤 David H. Yawn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 18:40
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/16; F16J15/164; B; B04; B04B; B04B5/00; B04B5/04; B04B5/0442; B04B7/00; B04B7/08; B04B2005/0464
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
217 words
A centrifuge for processing liquids having a first and second assembly of components one of which is capable of rotating relative to the other, the centrifuge comprising said first assembly of components comprising core means for receiving and expelling the liquid and for transmitting the liquid to said second assembly, said core means having outwardly extending core shoulder means, said second assembly of components comprising bowl means rotatively mounted about said core means for receiving the liquid and holding it, said bowl means not tapering outwardly from top to bottom, hollow interior shell means mounted within said bowl means forming an area in the interior periphery of the bowl means in which elements in the liquid can accumulate, said bowl means having upwardly extending neck means for receiving said core means, the neck means rotating about said core means during operation of the centrifuge, the neck means having outwardly extending neck shoulder means and wherein seal means are provided between said core means and said neck means for preventing the egress of liquid from between said core means, and said seal means comprising first ring means connected to said core shoulder means and second ring means connected to said neck shoulder means so that said first ring means and said second ring means sealingly contact each other.
Claim 2
Dependent Claim
217 words
A centrifuge for processing liquids having a first and second assembly of components one of which is capable of rotating relative to the other, the centrifuge comprising said first assembly of components comprising core means for receiving and expelling the liquid and for transmitting the liquid to said second assembly, said core means having outwardly extending core shoulder means, said second assembly of components comprising bowl means rotatively mounted about said core means for receiving the liquid and holding it, said bowl means not tapering outwardly from top to bottom, hollow interior shell means mounted within said bowl means forming an area in the interior periphery of the bowl means in which elements in the liquid can accumulate, said bowl means having upwardly extending neck means for receiving said core means, the neck means rotating about said core means during operation of the centrifuge, the neck means having outwardly extending neck shoulder means and wherein seal means are provided between said core means and said neck means for preventing the egress of liquid from between said core means, and said seal means comprising first ring means connected to said core shoulder means and second ring means connected to said neck shoulder means so that said first ring means and said second ring means sealingly contact each other.
Claim 3
Dependent Claim
12 words
The centrifuge of claim 1 wherein the first ring means is ceramic.
Claim 4
Dependent Claim
12 words
The centrifuge of claim 1 wherein the second ring means is ceramic.
Claim 5
Dependent Claim
36 words
The centrifuge of claim 1 wherein a resilient member is placed between at least one of the ring means and its respective shoulder means to force the ring means into contact with the other ring means.
Claim 6
Dependent Claim
21 words
The centrifuge of claim 4 wherein the resilient member is placed between the first ring means and the core shoulder means.
Claim 7
Dependent Claim
21 words
The centrifuge of claim 4 wherein the resilient member is placed between the second ring means and the neck shoulder means.
Claim 8
Dependent Claim
11 words
The centrifuge of claim 4 wherein the resilient member is hollow.
Claim 9
Dependent Claim
11 words
The centrifuge of claim 4 wherein the resilient member is tubular.
Claim 10
Dependent Claim
208 words
A centrifuge for processing liquids having a first and second assembly of components one of which is capable of rotating relative to the other, the centrifuge comprising said first assembly of components comprising core means for receiving and expelling the liquid and for transmitting the liquid to said second assembly, said core means having outwardly extending core shoulder means, said second assembly of components comprising bowl means rotatively mounted about said core means for receiving the liquid and holding it, said bowl means not tapering outwardly from top to bottom, hollow interior shell means mounted within said bowl means forming an area in the interior periphery of the bowl means in which elements in the liquid can accumulate, said bowl means having upwardly extending neck means for receiving said core means, the neck means rotating about said core means during operation of the centrifuge, the neck means having outwardly extending neck shoulder means, and wherein seal means are provided between said core means and said neck means for preventing the egress of liquid from between said core means and said neck means to the exterior of the centrifuge, said seal means comprising expansible seal means connected to said core means and expanding to sealingly contact said neck means.
Claim 11
Dependent Claim
208 words
A centrifuge for processing liquids having a first and second assembly of components one of which is capable of rotating relative to the other, the centrifuge comprising said first assembly of components comprising core means for receiving and expelling the liquid and for transmitting the liquid to said second assembly, said core means having outwardly extending core shoulder means, said second assembly of components comprising bowl means rotatively mounted about said core means for receiving the liquid and holding it, said bowl means not tapering outwardly from top to bottom, hollow interior shell means mounted within said bowl means forming an area in the interior periphery of the bowl means in which elements in the liquid can accumulate, said bowl means having upwardly extending neck means for receiving said core means, the neck means rotating about said core means during operation of the centrifuge, the neck means having outwardly extending neck shoulder means, and wherein seal means are provided between said core means and said neck means for preventing the egress of liquid from between said core means and said neck means to the exterior of the centrifuge, said seal means comprising expansible seal means connected to said core means and expanding to sealingly contact said neck means.
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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) | 1990-09-07 | 1991-03-09 | 1991-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-09-07 | 1995-03-09 | 1995-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-09-07 | 1999-03-09 | 1999-09-08 | $7700.00 | Window Closed / Lapsed |