Patent US4942668A successfully refreshed from Google Patents.
Patent US4036425A successfully refreshed from Google Patents.
US4036425A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotor for a centrifuge
Assignee: Individual
•
Filing: 1976-03-18
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Granted: 1977-07-19
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Expires: 1996-03-18
Abstract
Abstract Disposed in the housing of a vane centrifuge concentrically therewith are two tapered accelerating bowls facing each other with their end faces of larger diameter so as to define a controlled gap therebetween serving to feed starting material therethrough to a filtering surface of the vanes.
Inventors
- 👤 Mikhail Ivanovich Ilin
- 👤 Viktor Ivanovich Polyakov
- 👤 Valery Alexandrovich Trofimov
- 👤 Ivan Karpovich Drankovsky
- 👤 Alexandr Ivanovich Boitsov
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 10:57
CPC Classifications
B; B04; B04B; B04B7/00; B04B7/08; B04B1/00; B04B1/10; B04B1/12; B04B11/00; B04B11/06; B04B3/00; B04B7/12; B04B7/16
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
119 words
A centrifuge rotor comprising: a housing with a removable sealing lid arranged concentrically; a tapered accelerating bowl disposed inside said housing and attached to the bottom thereof concentrically; filtering vanes arranged inside said housing between the bottom thereof and said lid, each filtering vane being pivotally attached at its end which is spaced at a minimum distance from the axis of the housing, said rotor housing accommodating an additional tapered accelerating bowl secured concentrically to said housing on said lid so that the two bowls face each other with their end faces of the largest diameters and define a gap therebetween through which the starting product is fed to the filtering surface of the vanes, said diameters being equal.
Claim 2
Dependent Claim
119 words
A centrifuge rotor comprising: a housing with a removable sealing lid arranged concentrically; a tapered accelerating bowl disposed inside said housing and attached to the bottom thereof concentrically; filtering vanes arranged inside said housing between the bottom thereof and said lid, each filtering vane being pivotally attached at its end which is spaced at a minimum distance from the axis of the housing, said rotor housing accommodating an additional tapered accelerating bowl secured concentrically to said housing on said lid so that the two bowls face each other with their end faces of the largest diameters and define a gap therebetween through which the starting product is fed to the filtering surface of the vanes, said diameters being equal.
Claim 3
Dependent Claim
85 words
The rotor of claim 1, wherein the additional accelerating bowl is provided with an outer flange which overlaps the lid of the rotor housing to define a space between said flange and said lid for receiving replaceable shims of different thickness to alter the width of the gap between said additional bowl and the accelerating bowl arranged on the bottom with the assistance of said replaceable shims of different thickness which are placed between the additional accelerating bowl and the lid of the rotor housing.
Claim 4
Dependent Claim
23 words
The rotor of claim 1, wherein the end faces having the largest diameter of both accelerating bowls are provided with internally bevelled edges.
Claim 5
Dependent Claim
25 words
The rotor of claim 1, wherein the additional accelerating bowl mounted on the housing lid has its smallest diameter provided with outward and inward flangings.
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) | 1980-07-18 | 1981-01-17 | 1981-07-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-07-18 | 1985-01-17 | 1985-07-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-07-18 | 1989-01-17 | 1989-07-19 | $7700.00 | Window Closed / Lapsed |