US3765601A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Centrifuge
Assignee: MSE Holdings Ltd
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Filing: 1971-03-10
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Granted: 1973-10-16
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Expires: 1991-03-10
Abstract
Abstract A fluid feed head for supplying fluid to and removing fluid from a rotating centrifuge rotor, comprising two coaxial rotating feed tubes one of which is subjected to the axial sealing forces of the head whilst being substantially isolated from the torsional forces between the rotor and head and the other of which tubes is mounted so as to be held against rotation with respect to the rotor and the rotary portion of the head whilst being movable axially.
Inventors
- 👤 Gulley P Baker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:56
CPC Classifications
B; B04; B04B; B04B11/00; B04B11/02; B04B15/00; B04B15/08; B04B5/00; B04B5/04; B04B5/0442; B04B2005/0464
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
157 words
A centrifuge arrangement having a rotor and a fluid feed head for supplying fluid to and removing fluid from said rotor whilst the rotor rotates, the head comprising: a first, stationary, portion defining first and second passages; a second portion rotatable with said rotor; sealing means for effecting a rotary seal between said first and second portions; a first tube providing a feed path between said first passage and said rotor and being axially clamped so as to be subjected to the axial sealing forces of said sealing means whilst being rotatable relative to at least one of said rotor and said second portion; a second tube providing a feed path between said second passage and said rotor; and mounting means of said second tube holding said second tube against rotation relative to said rotor and said second portion whilst permitting axial movement of said second tube relative to one of said rotor and said second portion.
Claim 2
Dependent Claim
157 words
A centrifuge arrangement having a rotor and a fluid feed head for supplying fluid to and removing fluid from said rotor whilst the rotor rotates, the head comprising: a first, stationary, portion defining first and second passages; a second portion rotatable with said rotor; sealing means for effecting a rotary seal between said first and second portions; a first tube providing a feed path between said first passage and said rotor and being axially clamped so as to be subjected to the axial sealing forces of said sealing means whilst being rotatable relative to at least one of said rotor and said second portion; a second tube providing a feed path between said second passage and said rotor; and mounting means of said second tube holding said second tube against rotation relative to said rotor and said second portion whilst permitting axial movement of said second tube relative to one of said rotor and said second portion.
Claim 3
Dependent Claim
16 words
An arrangement as claimed in claim 1, wherein said second tube extends within said first tube.
Claim 4
Dependent Claim
17 words
An arrangement as claimed in claim 2, wherein said mounting means comprises a pin and slot coupling.
Claim 5
Dependent Claim
26 words
An arrangement as claimed in claim 1, and comprising a fluid transfer member attached to said rotor for transferring fluid between said rotor and said tubes.
Claim 6
Dependent Claim
41 words
An arrangement as claimed in claim 3, and comprising a fluid transfer member attached to said rotor for transferring fluid between said rotor and said tubes, said pin and slot coupling acting between said fluid transfer member and said second tube.
Claim 7
Dependent Claim
42 words
An arrangement as claimed in claim 2, and comprising sealing means sealing said first tube relative to said rotor and said second portion and permitting rotation of said first tube relative to at least one of said rotor and said second portion.
Claim 8
Dependent Claim
25 words
An arrangement as claimed in claim 1, and comprising cylindrical bearing surfaces by which said second portion is rotatably mounted relative to said first portion.
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) | 1976-10-15 | 1977-04-16 | 1977-10-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-15 | 1981-04-16 | 1981-10-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-15 | 1985-04-16 | 1985-10-16 | $7700.00 | Window Closed / Lapsed |