US4022694A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oil-water separation apparatus
Assignee: T-HYDRONAUTICS Inc A CORP OF TX
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Filing: 1975-12-03
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Granted: 1977-05-10
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Expires: 1995-12-03
Abstract
Abstract Oil-water separation apparatus having a flow-through chamber containing a block of foam filter material regenerable by squeezing, a pair of perforated end plates located on either side of the foam block within the chamber at least one of which responds to applied pressure to squeeze the foam, and a flexible envelope of impervious material surrounding the foam block between the block and the inside walls of the chamber and connected at each end to the plates to avoid channeling and friction between the foam block and the walls of the chamber.
Inventors
- 👤 Daniel H. Fruman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:56
CPC Classifications
B; B01; B01D; B01D17/00; B01D17/02; B01D17/0202; B01D17/04; B01D17/045; B01D29/00; B01D29/62; B01D29/70; B01D29/705
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
267 words
Oil-water separation apparatus comprising a housing having an inlet and an outlet end; said inlet end having an inlet for introducing an oil-water fluid into the housing, said outlet end having an outlet for removing separated oil from the housing and an outlet for removing separated water from the housing; a pair of perforated plates axially spaced within the housing intermediate its ends, one of which is fixed in the housing and the other is movably mounted within the housing, said plates forming between them and with the inner wall surface of the housing a flowthrough separation chamber; porous filter material that is regenerable by compression located within the chamber; an envelope of flexible, impervious material surrounding the outer surface of the porous material adjacent the inner wall surface of the separation chamber, said envelope having an outer dimension less than the dimension of the inner wall surface of the chamber and being conducted at one end to said movable plate and at the other end adjacent the fixed plate to form an annular space around the enveloped porous material between the envelope and the inner wall surface of the chamber that can be pressurized with fluid in opposition to the pressure of flow of fluid through the chamber, said porous filter material being oversized in an uncompressed state with respect to said dimension of the envelope so that it is compressed into the envelope; and means for moving under pressure the movable plate with respect to the fixed plate so that the porous filter material and its surrounding envelope can be axially compressed within the chamber.
Claim 2
Dependent Claim
267 words
Oil-water separation apparatus comprising a housing having an inlet and an outlet end; said inlet end having an inlet for introducing an oil-water fluid into the housing, said outlet end having an outlet for removing separated oil from the housing and an outlet for removing separated water from the housing; a pair of perforated plates axially spaced within the housing intermediate its ends, one of which is fixed in the housing and the other is movably mounted within the housing, said plates forming between them and with the inner wall surface of the housing a flowthrough separation chamber; porous filter material that is regenerable by compression located within the chamber; an envelope of flexible, impervious material surrounding the outer surface of the porous material adjacent the inner wall surface of the separation chamber, said envelope having an outer dimension less than the dimension of the inner wall surface of the chamber and being conducted at one end to said movable plate and at the other end adjacent the fixed plate to form an annular space around the enveloped porous material between the envelope and the inner wall surface of the chamber that can be pressurized with fluid in opposition to the pressure of flow of fluid through the chamber, said porous filter material being oversized in an uncompressed state with respect to said dimension of the envelope so that it is compressed into the envelope; and means for moving under pressure the movable plate with respect to the fixed plate so that the porous filter material and its surrounding envelope can be axially compressed within the chamber.
Claim 3
Dependent Claim
17 words
Apparatus of claim 1, wherein said outer surface of the porous material is bonded to the envelope.
Claim 4
Dependent Claim
107 words
Apparatus of claim 1, wherein the perforated plate adjacent the outlet end is fixedly connected and sealed to the housing and the plate adjacent the inlet end is movably mounted within the housing and permits flow of fluid fed to the inlet to pass into the annular space to form a stagnant pool of fluid around the envelope having a pressure at least equal to that of the flow of fluid through the separation chamber, said envelope being sealably connected to the fixed plate to prevent the fluid in the annular space from reaching the outlet end and thereby bypassing the porous material in the separation chamber.
Claim 5
Dependent Claim
15 words
Apparatus of claim 1, wherein the porous filter material comprises a block of polyurethane foam.
Claim 6
Dependent Claim
14 words
Apparatus of claim 1, wherein the envelope is a rubber coated sheet of nylon.
Claim 7
Dependent Claim
14 words
Apparatus of claim 1, wherein the housing, chamber, and plates have a circular cross-section.
Claim 8
Dependent Claim
17 words
Apparatus of claim 1, including clamping means for connecting the ends of the envelope to the plates.
Claim 9
Dependent Claim
59 words
Apparatus of claim 7, wherein the clamping means comprises an annular bracket around the periphery of the perforated plates on the side adjacent the separation chamber and forming an annular and radially outwardly opening channel for receipt of the ends of the envelope; and a cable stretched around the channel to hold the ends of the envelope in place.
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) | 1980-05-09 | 1980-11-08 | 1981-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-05-09 | 1984-11-08 | 1985-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-05-09 | 1988-11-08 | 1989-05-10 | $7700.00 | Window Closed / Lapsed |