Patent US4091988A successfully refreshed from Google Patents.
US4091988A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Centrifugal trap for solid particles
Assignee: WATER DEVELOPMENT TECHNOLOGIES Inc
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Filing: 1976-06-21
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Granted: 1978-05-30
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Expires: 1996-06-21
Abstract
Abstract A centrifugal trap for preventing solid particles such as sand from reaching water lubricated bearings. The ambient water which is used for lubricating a bearing is passed through a maze structure which includes a first longitudinal annular channel which is substantially concentric with the shaft supported by the bearing, and a second lateral annular channel which is also concentric with the shaft, into a longitudinal annular separating chamber. A centrifugal force is generated in the liquid by rotating a cylindrical member forming one of the walls of the channels and the chamber, which causes sand particles and the like to be driven outwardly against the longitudinal portions of the walls. The liquid, the particles having been separated therefrom, is passed from the centrifugal separating chamber through an inner longitudinal annular channel, which is concentric with the shaft, to the shaft bearing.
Inventors
- 👤 Albert G. Bodine
- 👤 Ernest Alfred VON Seggern
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 15:46
CPC Classifications
E; E21; E21B; E21B10/00; E21B10/08; E21B10/22; E21B10/25; B; B04; B04B; B04B15/00; B04B5/00; B04B5/10; B04B9/00; E21B10/23; E21B10/24; E21B21/00; E21B21/002; F; F16; F16C; F16C17/00; F16C17/12; F16C17/14; F16C33/00; F16C33/72; F16C33/76; F16C2352/00
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
191 words
In a rotating machine having a shaft rotatably supported on a bearing which is lubricated by an ambient supply of water, the improvement being a centrifugal filter unit mounted in external concentricity with said shaft for filtering out solid particles from said water, comprising: a rotatable cylindrical member mounted in external concentricity with said shaft, said rotatable cylindrical member being coupled to said shaft for rotation therewith, a fixed cylindrical member mounted between said rotatable member and said shaft in external concentricity with said shaft and internal concentricity with said rotatable member, an annular chamber axially related to said shaft being formed between said cylindrical members and an annular channel axially related to said shaft being formed between said fixed cylindrical member and said shaft, water being supplied to said bearing through said channel, said chamber having an inlet on one end thereof and an outlet in communication with said channel on the opposite end thereof, whereby when said rotatable member is rotatably driven said particles are centrifugally driven outwardly against the inner walls of said chamber, thereby cleansing of said particles the water supplied through said channel to said bearing.
Claim 2
Dependent Claim
191 words
In a rotating machine having a shaft rotatably supported on a bearing which is lubricated by an ambient supply of water, the improvement being a centrifugal filter unit mounted in external concentricity with said shaft for filtering out solid particles from said water, comprising: a rotatable cylindrical member mounted in external concentricity with said shaft, said rotatable cylindrical member being coupled to said shaft for rotation therewith, a fixed cylindrical member mounted between said rotatable member and said shaft in external concentricity with said shaft and internal concentricity with said rotatable member, an annular chamber axially related to said shaft being formed between said cylindrical members and an annular channel axially related to said shaft being formed between said fixed cylindrical member and said shaft, water being supplied to said bearing through said channel, said chamber having an inlet on one end thereof and an outlet in communication with said channel on the opposite end thereof, whereby when said rotatable member is rotatably driven said particles are centrifugally driven outwardly against the inner walls of said chamber, thereby cleansing of said particles the water supplied through said channel to said bearing.
Claim 3
Dependent Claim
21 words
The device of claim 1 wherein said annular chamber and annular channel are concentric with said shaft and said cylindrical members.
Claim 4
Dependent Claim
48 words
The device of claim 1 and further including means mounted at the inlet of said chamber for closing said inlet when said rotatable cylinder is rotating below a predetermined speed and opening said inlet when said rotatable cylinder is rotating at a speed greater than said predetermined speed.
Claim 5
Dependent Claim
94 words
The device of claim 1 and further including a second fixed cylindrical member connected to said first fixed cylindrical member at one end thereof, said second fixed cylindrical member being positioned in external concentricity with said rotatable cylindrical member, a second annular channel axially related to said shaft being formed between said second fixed cylindrical member and said rotatable cylindrical member, an inlet for the fluid being formed on one end of said last mentioned channel, the other end of said last mentioned channel being in fluid communication with the inlet to said chamber.
Claim 6
Dependent Claim
67 words
The device of claim 4 wherein said second fixed cylindrical member is joined to the first fixed cylindrical member by a ring member radially related to said shaft, a ring member extending radially inwardly towards said shaft from one end of said rotatable cylinder member, a radial channel being formed between said ring members, said radial channel providing fluid communication between said first and second annular channels.
Claim 7
Dependent Claim
50 words
The device of claim 5 and further including means mounted at the inlet of said chamber for closing said inlet when said rotatable cylindrical member is rotating below a predetermined speed and opening said inlet when said rotatable cylindrical member is rotating at a speed greater than said predetermined speed.
Claim 8
Dependent Claim
26 words
The device of claim 6 wherein said means mounted at said inlet comprises a resilient flap ring connected to said rotatable cylindrical member for rotation therewith.
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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) | 1981-05-29 | 1981-11-28 | 1982-05-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-05-29 | 1985-11-28 | 1986-05-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-05-29 | 1989-11-28 | 1990-05-30 | $7700.00 | Window Closed / Lapsed |