Patent US3675776A successfully refreshed from Google Patents.
US3675776A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Filter device
Assignee: Individual
•
Filing: 1970-12-16
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Granted: 1972-07-11
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Expires: 1990-12-16
Abstract
Abstract A fluid purification filter device which includes a filter casing for accommodating a disposable filter element. The filter casing is provided with a fluid impervious barrier which divides the interior thereof into at least two compartments. The filter element is symmetrically shaped, and is insertable from either end, into the filter casing and interlockingly engaged with the barrier, such that distinct portions of the filter element extend into each of the compartments and the resultant channelized flow is caused to pass through the several distinct portions of the filter element. A modified embodiment has an independent replacement filter cartridge insertable into the filter element.
Inventors
- 👤 Philip Campo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:00
CPC Classifications
B; B01; B01D; B01D35/00; B01D35/30; B01D29/00; B01D29/11; B01D29/13; B01D29/15; B01D29/23; B01D29/50; B01D29/56; B01D29/58; B01D2201/00; B01D2201/30; B01D2201/301
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
206 words
A fluid filter device adapted for installation in a fluid conduit and comprising a casing having an inlet for admitting the fluid flowing through said conduit, and an outlet for discharging the fluid, a replaceable filter element housed within said casing for treating the fluid, a partition wall traversing the interior of the casing intermediate the inlet and outlet opening, said partition wall forming at least two compartments within said casing and further defining an aperture therethrough for receiving the filter element, releasable locking means on said filter element adapted for cooperative engagement with the aperture to form a fluid tight seal and to removably secure the filter element with a portion thereof in each of said compartments and with one end extending beyond the periphery of said casing, closure means for sealing said casing, said filter element defining an internal axial passageway extending longitudinally therethrough for providing fluid communication between said compartments and a filtering medium positioned concentrically around the axial passageway whereby fluid flowing through said casing is directed sequentially into one of said compartments, radially inward through the filtering medium, longitudinally through said passageway into another of said compartments, and radially outwardly through the filtering medium to thus achieve a plural filtering action.
Claim 2
Dependent Claim
206 words
A fluid filter device adapted for installation in a fluid conduit and comprising a casing having an inlet for admitting the fluid flowing through said conduit, and an outlet for discharging the fluid, a replaceable filter element housed within said casing for treating the fluid, a partition wall traversing the interior of the casing intermediate the inlet and outlet opening, said partition wall forming at least two compartments within said casing and further defining an aperture therethrough for receiving the filter element, releasable locking means on said filter element adapted for cooperative engagement with the aperture to form a fluid tight seal and to removably secure the filter element with a portion thereof in each of said compartments and with one end extending beyond the periphery of said casing, closure means for sealing said casing, said filter element defining an internal axial passageway extending longitudinally therethrough for providing fluid communication between said compartments and a filtering medium positioned concentrically around the axial passageway whereby fluid flowing through said casing is directed sequentially into one of said compartments, radially inward through the filtering medium, longitudinally through said passageway into another of said compartments, and radially outwardly through the filtering medium to thus achieve a plural filtering action.
Claim 3
Dependent Claim
59 words
A fluid filter device as claimed in claim 1 wherein the locking means secures the filter element in a spaced relationship from the casing with one end of the filter element projecting through an access opening defined in the casing, and said closure means adapted fro accommodating said end of the filter element and for sealing the access opening.
Claim 4
Dependent Claim
37 words
A fluid filter device as claimed in claim 2 wherein the locking means includes a ring member spaced from opposite ends of the filter element and provided with a threaded portion thereon for engagement with the aperture.
Claim 5
Dependent Claim
45 words
A fluid filter device as claimed in claim 2 wherein the locking means includes a ring member spaced from opposite ends of the filter element and provided with at least one tab projection, and a peripheral slot around said aperture for receiving the tab projection.
Claim 6
Dependent Claim
44 words
A fluid filter device as claimed in claim 2 wherein the filter element is symmetrically shaped and further includes gripping means around opposed ends of the filter element thereby permitting insertion into and removal from the casing by either end of the filter element.
Claim 7
Dependent Claim
45 words
A fluid filter device as claimed in claim 5 wherein the filter element includes a porous tubular member forming an axial passageway, at least one layer of a filtering medium concentrical with the axial passageway and a liquid pervious boundary material surrounding the filtering medium.
Claim 8
Dependent Claim
54 words
A fluid filter device as claimed in claim 2 wherein the filter element is provided with an open end and further including a disposable filter cartridge adapted for accommodation within the filter element through said open end and a cover member for said open end adapted to selectively retain the cartridge within the element.
Claim 9
Dependent Claim
38 words
A fluid filter device as claimed in claim 7 wherein the filter cartridge is comprised of a solidified mass of a filtering medium having a central hollow core forming an axial passageway extending longitudinally through the filter cartridge.
Claim 10
Dependent Claim
41 words
A fluid filter device as claimed in claim 8 wherein the cover member is provided with an externally threaded portion and further including a threaded collar member surrounding said open end of the filter element adapted to receive said cover member.
Claim 11
Dependent Claim
35 words
A fluid filter device as claimed in claim 9 further including a porous tubular member attached to the cover member and adapted to be slidably accommodated within the central hollow core of the filter cartridge.
References Cited (Backward Citations)
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US3182803A
Cited
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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) | 1975-07-11 | 1976-01-10 | 1976-07-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-11 | 1980-01-10 | 1980-07-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-11 | 1984-01-10 | 1984-07-11 | $7700.00 | Window Closed / Lapsed |