US3687359A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Centrifuge rotor
Assignee: Damon Corp
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Filing: 1971-01-07
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Granted: 1972-08-29
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Expires: 1991-01-07
Abstract
Abstract A centrifuge rotor having a plurality of chambers each comprising (1) a socket extending through the top surface of the rotor having an inside cylindrical surface terminating in a spherical surface, (2) a slot extending through the peripheral and bottom surfaces of the rotor that is formed by a cylindrical section extending through an arc of 90* with a center along the vertical axis of the socket and below the center of the socket spherical section and (3) a spherical seat connecting the slot and the socket having its center along the horizontal axis of the slot so that the angle between the vertical axis of the rotor and a line between the center of the spherical socket section and the seat is between 55* and 90*. Buckets adapted to fit into the chambers and move between a vertical and horizontal position comprise a top spherical flanged section and a bottom tubular section.
Inventors
- 👤 Michael J Scanlon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 15:36
CPC Classifications
B; B04; B04B; B04B5/00; B04B5/04; B04B5/0407; B04B5/0414; B04B5/0421
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
156 words
A rotor having a top surface, a bottom surface and a peripheral surface, a plurality of chambers evenly spaced around the circumference of said top surface and said bottom surface and being equidistant from the vertical axis of said rotor, each of said chambers comprising a. a socket extending through the top surface having an inside cylindrical surface terminating in a spherical section b. a slot extending from said peripheral and bottom surfaces, said slot comprising a cylindrical section extending through an arc of about 90* with a center along the vertical axis of the socket and below the center of the socket spherical section, and c. a spherical seat connecting the slot and the socket having its center along the horizontal axis of the slot so that the angle between the vertical axis of the rotor and a line between the centers of the spherical section and the seat is between 55* and 90* .
Claim 2
Dependent Claim
156 words
A rotor having a top surface, a bottom surface and a peripheral surface, a plurality of chambers evenly spaced around the circumference of said top surface and said bottom surface and being equidistant from the vertical axis of said rotor, each of said chambers comprising a. a socket extending through the top surface having an inside cylindrical surface terminating in a spherical section b. a slot extending from said peripheral and bottom surfaces, said slot comprising a cylindrical section extending through an arc of about 90* with a center along the vertical axis of the socket and below the center of the socket spherical section, and c. a spherical seat connecting the slot and the socket having its center along the horizontal axis of the slot so that the angle between the vertical axis of the rotor and a line between the centers of the spherical section and the seat is between 55* and 90* .
Claim 3
Dependent Claim
212 words
In combination, a centrifuge rotor and buckets, said rotor having a top surface, a bottom surface and a peripheral surface, a plurality of chambers evenly spaced around the circumference of said top surface and said bottom surface and being equidistant from the vertical axis of said rotor, each of said chambers comprising a. a socket extending through the top surface having an inside cylindrical surface terminating in a spherical section b. a slot extending from said peripheral and bottom surfaces, said slot comprising a cylindrical section extending through an arc of about 90* with a center along the vertical axis of the socket and below the center of the socket spherical section, c. a spherical seat connecting the slot and the socket having its center along the horizontal axis of the slot so that the angle between the vertical axis of the rotor and a line between the centers of the spherical section and the seat is between 55* and 90* . d. buckets having a tubular portion closed at one end and a flange at the other end, said flange having an outside spherical surface that fits into the spherical sections of said socket and said slot and said tubular portion extending through the peripheral and bottom surfaces of said rotor.
Claim 4
Dependent Claim
212 words
In combination, a centrifuge rotor and buckets, said rotor having a top surface, a bottom surface and a peripheral surface, a plurality of chambers evenly spaced around the circumference of said top surface and said bottom surface and being equidistant from the vertical axis of said rotor, each of said chambers comprising a. a socket extending through the top surface having an inside cylindrical surface terminating in a spherical section b. a slot extending from said peripheral and bottom surfaces, said slot comprising a cylindrical section extending through an arc of about 90* with a center along the vertical axis of the socket and below the center of the socket spherical section, c. a spherical seat connecting the slot and the socket having its center along the horizontal axis of the slot so that the angle between the vertical axis of the rotor and a line between the centers of the spherical section and the seat is between 55* and 90* . d. buckets having a tubular portion closed at one end and a flange at the other end, said flange having an outside spherical surface that fits into the spherical sections of said socket and said slot and said tubular portion extending through the peripheral and bottom surfaces of said rotor.
Claim 5
Dependent Claim
34 words
The rotor of claim 1 wherein the angle between the vertical axis of the rotor and a line between the centers of the spherical section and the seat is between 70* and 75* .
Claim 6
Dependent Claim
34 words
The rotor of claim 2 wherein the angle between the vertical axis of the rotor and a line between the centers of the spherical section and the seat is between 70* and 75* .
References Cited (Backward Citations)
US1997919A
Cited
US3377021A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-08-29 | 1976-02-28 | 1976-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-29 | 1980-02-28 | 1980-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-29 | 1984-02-28 | 1984-08-29 | $7700.00 | Window Closed / Lapsed |