Patent US4946433A successfully refreshed from Google Patents.
US4946433A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Centrifuge drive
Assignee: MOSKOVSKOE NAUCHNO-PROIZVODSTVENNOE OBJEDINENIE "BIOPHIZPRIBOR" USSR MOSCOW
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Filing: 1989-07-17
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Granted: 1990-08-07
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Expires: 2009-07-17
Abstract
Abstract The drive of a centrifuge utilized in biology, biophysics and medicine includes a casing accommodating a stator and a rotor whose shaft is installed in an angular bearing and rigidly connected with a flexible shaft fixed rotatably in a dumping device. The casing has passages for the circulation of lubricant and coolant, respectively, the rotor has a blind hole arranged coaxially with the rotation axis of the rotor; and the angular bearing has supporting and radial slide surfaces and is fixed in the rotor by means of the damping device so that the radial slide surface is located at least partly in the blind hole of the rotor, said bearing having passages ensuring circulation of lubricant over its supporting and radial surfaces.
Inventors
- 👤 Boris P. Gorodissky
- 👤 Alexandr I. Sambursky
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:40
CPC Classifications
B; B04; B04B; B04B9/00; B04B9/12; B04B9/02
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
171 words
A centrifuge drive, comprising: a casing having a plurality of passages for circulation of lubricant and coolant, and an internal surface; a stator fixed in said casing and having an external surface; a rotor rotatably fixed in said casing and having a shaft and a blind hole arranged coaxially with the rotation axis of said rotor; an angular bearing supporting said shaft of said rotor, having a supporting slide surface, a radial slide surface, and a plurality of passages, said angular bearing being fixed in said rotor and installed in said blind hole of said rotor so that said radial slide surface is located at least partly in said blind hole of said rotor; a damping device located in said casing whereby said angular bearing is fixed in said rotor; and a flexible shaft rigidly connected with said shaft of said rotor and fixed rotatably in said damping device; wherein said plurality of passages of said angular bearing providing circulation of lubricant over said supporting and radial surfaces of said bearing.
Claim 2
Dependent Claim
171 words
A centrifuge drive, comprising: a casing having a plurality of passages for circulation of lubricant and coolant, and an internal surface; a stator fixed in said casing and having an external surface; a rotor rotatably fixed in said casing and having a shaft and a blind hole arranged coaxially with the rotation axis of said rotor; an angular bearing supporting said shaft of said rotor, having a supporting slide surface, a radial slide surface, and a plurality of passages, said angular bearing being fixed in said rotor and installed in said blind hole of said rotor so that said radial slide surface is located at least partly in said blind hole of said rotor; a damping device located in said casing whereby said angular bearing is fixed in said rotor; and a flexible shaft rigidly connected with said shaft of said rotor and fixed rotatably in said damping device; wherein said plurality of passages of said angular bearing providing circulation of lubricant over said supporting and radial surfaces of said bearing.
Claim 3
Dependent Claim
68 words
A centrifuge drive according to claim 1 wherein said casing is made as an integral element and is provided with vertical slots arranged near said damping device and communicating with said plurality of passages of the casing for circulation of coolant and said plurality of passages of the casing for circulation of lubricant are in communication with corresponding passages of said plurality of passages of said angular bearing.
Claim 4
Dependent Claim
44 words
A centrifuge drive according to claim 2 wherein said external surface of said stator has a spiral groove which, together with the internal surface of the casing, defines a space communicating with said plurality of passages of the casing for the circulation of coolant.
Claim 5
Dependent Claim
18 words
A centrifuge drive according to claim 2 wherein said vertical slots are arranged concentrically with said damping device.
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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) | 1993-08-06 | 1994-02-05 | 1994-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-08-06 | 1998-02-05 | 1998-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-08-06 | 2002-02-05 | 2002-08-07 | $7700.00 | Window Closed / Lapsed |