US4798579A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotor for centrifuge
Assignee: Beckman Coulter Inc
•
Filing: 1987-10-30
•
Granted: 1989-01-17
•
Expires: 2007-10-30
Abstract
Abstract The present invention provides an improved rotor for a centrifuge that operates by centrifugal elutriation. The rotor consists of a chamber assembly, a disk assembly, and a quick release mechanism. The chamber assembly is relatively light and it includes one or two separation chambers, tubing and a rotating seal. The disk assembly consists of the relatively heavy support structure. The two piece construction facilitates handling the parts of the rotor that generally need to be autoclaved. The chamber assembly has a novel structure that allows the rotor to easily be configured for operation with one or two chambers. The disk assembly has a unique strain relief that prevents structural cracking. The quick release mechanism is held in the latched position by centrifugal force during operation of the rotor.
Inventors
- 👤 Harry A. Penhasi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 20:49
CPC Classifications
B; B04; B04B; B04B5/00; B04B5/04; B04B5/0442; B04B9/00; B04B9/08; F; F16; F16D; F16D1/00; F16D1/10; F16D1/108; F16D1/112; B04B2005/0471
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
82 words
An improved rotor for a centrifuge that operates by centrifugal elutriation comprising, a unitary chamber assembly having at least one separation chamber, a rotating fluid seal, and tubes for passing fluid from and to said chamber through said rotating seal, a generally flat disk assembly with at least one recess, said recess having walls, said separation chamber positioned in said recess, whereby said walls physically hold said chamber assembly, and a quick release mechanism connecting said chamber assembly and said disk assembly.
Claim 2
Dependent Claim
82 words
An improved rotor for a centrifuge that operates by centrifugal elutriation comprising, a unitary chamber assembly having at least one separation chamber, a rotating fluid seal, and tubes for passing fluid from and to said chamber through said rotating seal, a generally flat disk assembly with at least one recess, said recess having walls, said separation chamber positioned in said recess, whereby said walls physically hold said chamber assembly, and a quick release mechanism connecting said chamber assembly and said disk assembly.
Claim 3
Dependent Claim
28 words
The rotor recited in claim 1 wherein said disk assembly comprises a disk with a plurality of openings and means for connecting said disk to a centrifuge spindle.
Claim 4
Dependent Claim
17 words
The rotor recited in claim 1 wherein said chamber assembly has two separation chambers connected in series.
Claim 5
Dependent Claim
103 words
An improved rotor for a centrifuge that operates by centrifugal elutriation comprising, a disk having a plurality of openings, means for connecting said disk to a centrifuge spindle, a unitary separation chamber assembly comprising, at least one separation chamber adapted to be positioned in one of the openings in said disk, whereby said chamber does not add to the aerodynamic resistance of said disk, an entrance port, an exit port, and a rotating seal for fluid and, means connecting said separation chamber to said entrance and exit ports through said rotating seal, whereby said separation chamber assembly can be removed from said disk.
Claim 6
Dependent Claim
103 words
An improved rotor for a centrifuge that operates by centrifugal elutriation comprising, a disk having a plurality of openings, means for connecting said disk to a centrifuge spindle, a unitary separation chamber assembly comprising, at least one separation chamber adapted to be positioned in one of the openings in said disk, whereby said chamber does not add to the aerodynamic resistance of said disk, an entrance port, an exit port, and a rotating seal for fluid and, means connecting said separation chamber to said entrance and exit ports through said rotating seal, whereby said separation chamber assembly can be removed from said disk.
Claim 7
Dependent Claim
93 words
An improved rotor for a centrifuge comprising in combination, connection means for supplying fluid to and for removing fluid from said rotor, a disk having first and second openings, a first unitary separation chamber assembly means positioned in said first opening, a rotating seal, tubing means connecting said first separation chamber means through said rotating seal to said connection means, means removably securing said first separation chamber means and said tubing means to said disk, whereby said chamber means and said tubing means can be removed for cleaning without removing said disk means.
Claim 8
Dependent Claim
93 words
An improved rotor for a centrifuge comprising in combination, connection means for supplying fluid to and for removing fluid from said rotor, a disk having first and second openings, a first unitary separation chamber assembly means positioned in said first opening, a rotating seal, tubing means connecting said first separation chamber means through said rotating seal to said connection means, means removably securing said first separation chamber means and said tubing means to said disk, whereby said chamber means and said tubing means can be removed for cleaning without removing said disk means.
Claim 9
Dependent Claim
36 words
The combination recited in claim 5 including a second separation chamber means positioned in said second opening in said disk, said tubing means including means connecting said first and said second separation chamber means in series.
Claim 10
Dependent Claim
14 words
The combination recited in claim 5 including a counterweight positioned in said second opening.
Claim 11
Dependent Claim
46 words
The combination recited in claim 5 including a hub wherein said rotating seal is mounted, a plurality of fluid passageways in said hub for allowing fluid to move vertically through said hub, and a plurality of rigid tubes connecting said separation chamber to said fluid passageways.
Claim 12
Dependent Claim
70 words
The combination recited in claim 5 including a second separation chamber means positioned in said second opening in said disk, a hub wherein said rotating seal is mounted, a plurality of fluid passageways in said hub for allowing fluid to move vertically through said hub, and said tubing means including a plurality of rigid tubes connecting said separation chambers in series and connecting said separation chambers to said fluid passageways.
Claim 13
Dependent Claim
156 words
A rotor for a centrifuge comprising in combination, a disk having means for connecting said disk to a drive shaft, said disk having a plurality of openings each of which has walls, a unitary separation chamber assembly having at least one separation chamber and fluid connecting means for connecting said chamber to external tubes via a rotating seal, said separation chamber being adapted to fit in one of said openings in said disk, and holding means for removably holding said separation chamber assembly to said disk, said holding means providing to tangential force to said separation chamber assembly, whereby radial and tangential forces are exerted on said chambers by said walls, a leak detection system comprising a leak collection chamber, a holding chamber and a passageway connecting said leak collection chamber and said holding chamber, said chambers being positioned such that fluid an be moved from said collection chamber to said holding chamber by centrifugal force.
Claim 14
Dependent Claim
156 words
A rotor for a centrifuge comprising in combination, a disk having means for connecting said disk to a drive shaft, said disk having a plurality of openings each of which has walls, a unitary separation chamber assembly having at least one separation chamber and fluid connecting means for connecting said chamber to external tubes via a rotating seal, said separation chamber being adapted to fit in one of said openings in said disk, and holding means for removably holding said separation chamber assembly to said disk, said holding means providing to tangential force to said separation chamber assembly, whereby radial and tangential forces are exerted on said chambers by said walls, a leak detection system comprising a leak collection chamber, a holding chamber and a passageway connecting said leak collection chamber and said holding chamber, said chambers being positioned such that fluid an be moved from said collection chamber to said holding chamber by centrifugal force.
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) | 1992-01-17 | 1992-07-18 | 1993-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-01-17 | 1996-07-18 | 1997-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-01-17 | 2000-07-18 | 2001-01-17 | $7700.00 | Window Closed / Lapsed |