US3822823A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vacuum centrifuge
Assignee: Individual
•
Filing: 1972-02-25
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Granted: 1974-07-09
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Expires: 1992-02-25
Abstract
Abstract To permit centrifuging in a high vacuum, an airtight housing has a centrifuge container located therein, mounted on a shaft to rotate at high speed. Within the airtight housing, a plurality of turbine rotor rings are located, connected to the shaft, the space between the turbine rings having interdigited turbine stator rings mounted thereon, so that, upon rotation of the centrifuge, the rotor and stator rings will cooperate to provide a high vacuum in the region of the centrifuging container.
Inventors
- 👤 M Wutz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 14:03
CPC Classifications
B; B04; B04B; B04B15/00; B04B15/08
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
127 words
Vacuum centrifuge comprising an airtight housing (1) and an exhaust port (3) formed in the housing; a shaft (4) extending into the housing; a centrifuging container (2) to hold the substance to be centrifuged connected to the shaft; a motor (6) drivingly connected to the shaft; a plurality of turbine rotor rings (7) spaced axially from each other on the shaft to rotate therewith; and a plurality of turbine stator rings (8) located within the housing and interengaging in the spaces between the turbine rotor rings, the turbine rotor rings and the turbine stator rings together forming a turbo-molecular vacuum pump entirely located within the housing, to evacuate the housing as the centrifuging container is rotated by the motor, and create a vacuum adjacent said centrifuging container.
Claim 2
Dependent Claim
127 words
Vacuum centrifuge comprising an airtight housing (1) and an exhaust port (3) formed in the housing; a shaft (4) extending into the housing; a centrifuging container (2) to hold the substance to be centrifuged connected to the shaft; a motor (6) drivingly connected to the shaft; a plurality of turbine rotor rings (7) spaced axially from each other on the shaft to rotate therewith; and a plurality of turbine stator rings (8) located within the housing and interengaging in the spaces between the turbine rotor rings, the turbine rotor rings and the turbine stator rings together forming a turbo-molecular vacuum pump entirely located within the housing, to evacuate the housing as the centrifuging container is rotated by the motor, and create a vacuum adjacent said centrifuging container.
Claim 3
Dependent Claim
22 words
Vacuum centrifuge according to claim 1, wherein the centrifuging container (2) is located on the shaft above the turbine rotor rings (7).
Claim 4
Dependent Claim
19 words
Vacuum centrifuge according to claim 1, wherein the drive motor (6) is located below the turbine rotor rings (7).
Claim 5
Dependent Claim
16 words
Vacuum centrifuge according to claim 1, wherein the drive motor is directly connected with the shaft.
Claim 6
Dependent Claim
21 words
Vacuum centrifuge according to claim 1, wherein the turbine rotor rings, the shaft and the drive motor form a unitary assembly.
Claim 7
Dependent Claim
16 words
Vacuum centrifuge according to claim 1, wherein the drive motor is a hysteresis or asynchronous motor.
Claim 8
Dependent Claim
29 words
Vacuum centrifuge according to claim 1, including a thrust bearing (6) located in the housing, the shaft being journaled in the thrust bearing and entirely contained within the housing.
Claim 9
Dependent Claim
37 words
Vacuum centrifuge according to claim 7, wherein the motor has a rotor and a stator and the rotor of the motor is connected to the shaft within the housing, the stator being located outside of the housing.
Claim 10
Dependent Claim
33 words
Vacuum centrifuge according to claim 1, including a rotary vacuum seal (5a) through the housing, the shaft passing through the vacuum seal in airtight manner; the motor being located outside of the housing.
Claim 11
Dependent Claim
18 words
Vacuum centrifuge according to claim 1, including an external vacuum pump (P) connected to the exhaust port (3).
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) | 1977-07-08 | 1978-01-07 | 1978-07-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-07-08 | 1982-01-07 | 1982-07-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-07-08 | 1986-01-07 | 1986-07-09 | $7700.00 | Window Closed / Lapsed |