US3879294A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid operated contaminant trap
Assignee: Vickers Inc
•
Filing: 1972-05-04
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Granted: 1975-04-22
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Expires: 1992-05-04
Abstract
Abstract A dynamic filter for removing ultra fine particles in a stream of fluid has a cylindrical rotor powered by the energy in a stream of fluid. The stream is directed through a centrifugal pump and through a turbine. Axial passages connect between them. The outer walls of the axial passages are constituted by a scrim, forming an absorbent for contaminant particles driven into the absorbent material by centrifugal force.
Inventors
- 👤 Gaylor O Ellis
- 👤 John A Halat
- 👤 Girish B Sawhney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 16:32
CPC Classifications
B; B01; B01D; B01D35/00; B01D35/26; B04; B04B; B04B5/00; B04B5/005; F; F15; F15B; F15B21/00; F15B21/04; F15B21/041
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
97 words
A dynamic filter comprising a cylindrical casing having two terminal passages forming an inlet at one end and an outlet at the other end, a cylindrical rotor journalled in the casing and having rotational connection with the inlet and the outlet, means forming a centrifugal pump adjacent one terminal and means forming a turbine adjacent the other terminal, axial flow passages in the rotor connecting the pump and the turbine, and a contaminant particle trap forming the radially outer walls of the axial flow passages, the rotor being driven solely by the fluid passing through the filter.
Claim 2
Dependent Claim
97 words
A dynamic filter comprising a cylindrical casing having two terminal passages forming an inlet at one end and an outlet at the other end, a cylindrical rotor journalled in the casing and having rotational connection with the inlet and the outlet, means forming a centrifugal pump adjacent one terminal and means forming a turbine adjacent the other terminal, axial flow passages in the rotor connecting the pump and the turbine, and a contaminant particle trap forming the radially outer walls of the axial flow passages, the rotor being driven solely by the fluid passing through the filter.
Claim 3
Dependent Claim
97 words
A dynamic filter comprising a cylindrical casing having two terminal passages forming an inlet at one end and an outlet at the other end, a cylindrical rotor journalled in the casing and having rotational connection with the inlet and the outlet, means forming a centrifugal pump adjacent one terminal and means forming a turbine adjacent the other terminal, axial flow passages in the rotor connecting the pump and the turbine, and a contaminant particle trap forming the radially outer walls of the axial flow passages, the rotor being driven solely by the fluid passing through the filter.
Claim 4
Dependent Claim
97 words
A dynamic filter comprising a cylindrical casing having two terminal passages forming an inlet at one end and an outlet at the other end, a cylindrical rotor journalled in the casing and having rotational connection with the inlet and the outlet, means forming a centrifugal pump adjacent one terminal and means forming a turbine adjacent the other terminal, axial flow passages in the rotor connecting the pump and the turbine, and a contaminant particle trap forming the radially outer walls of the axial flow passages, the rotor being driven solely by the fluid passing through the filter.
Claim 5
Dependent Claim
23 words
A filter as defined in claim 1 having a central stationary shaft forming a journal for the rotor the rotor being fluid driven.
Claim 6
Dependent Claim
21 words
A filter as defined in claim 1 wherein the pump is at the inlet and the turbine is at the outlet.
Claim 7
Dependent Claim
22 words
A filter as defined in claim 2 having nozzle means on the central shaft for directing inlet flow spirally into the pump.
Claim 8
Dependent Claim
48 words
A filter as defined in claim 4 wherein the nozzle means extends radially beyond the shaft diameter, and having bearings in the rotor engaging the shaft on opposite sides of the nozzle means and a third bearing in the rotor at its end remote from the nozzle means.
Claim 9
Dependent Claim
18 words
A filter as defined in claim 5 wherein the rotor has a planar joint at the nozzle means.
Claim 10
Dependent Claim
18 words
A filter as defined in claim 1 wherein the axial flow passages are formed by a central plug.
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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) | 1978-04-21 | 1978-10-21 | 1979-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-04-21 | 1982-10-21 | 1983-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-04-21 | 1986-10-21 | 1987-04-22 | $7700.00 | Window Closed / Lapsed |