Patent US721767A successfully refreshed from Google Patents.
Patent US3926599A successfully refreshed from Google Patents.
US3926599A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Filter cartridge
Assignee: Gertsch & Co AG
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Filing: 1974-01-25
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Granted: 1975-12-16
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Expires: 1994-01-25
Abstract
Abstract A filter cartridge or magazine embodying a frame and a filler of adsorption material present in the form of pourable material and retained by the frame. The frame is constituted by a hood-like construction, the edge of the hood-like construction being located at the mouth of the cartridge, and the adsorption material likewise forming a hook-like jacket.
Inventors
- 👤 Ernst Rudin
- 👤 Heinz Weisskopf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 13:12
CPC Classifications
B; B01; B01D; B01D46/00; B01D46/0027; B01D46/0036; B01D46/24; B01D46/2403; B01D46/2411; B01D46/2414; B01D46/30; B01D2275/00; B01D2275/20; B01D2275/201
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
97 words
A FILTER CARTIDGE COMPRISING A HOOD-LIKE FRAME HAVING A MOUTH PORTION AND A FILLER OF ADSORPTION MATERIAL IN THE FORM OF POURABLE MATERIAL HOUSED IN THE FRAME, SAID FRAME COMPRISING AN OUTER HOOD MEMBER AND AN INNER HOOD MEMBER WHICH IS ARRANGED WITHIN THE OUTER HOOD MEMBER IN SPACED RELATIONSHIP THEREWITH, THE TWO HOOD MEMBERS EACH HAVING A PERFORATED WALL AND THE SPACE DEFINED BETWEEN THE TWO HOOD MEMBERS CONTAINING SAID ADSORPTION MATERIAL IN THE FORM OF A SUBSTANTIALLY HOOD-LIKE SHELL, AND SAID HOOD-LIKE FRAME HAVING HOOD EDGE MEANS LOCATED AT THE REGION OF THE MOUTH PORTION.
Claim 2
Dependent Claim
97 words
A FILTER CARTIDGE COMPRISING A HOOD-LIKE FRAME HAVING A MOUTH PORTION AND A FILLER OF ADSORPTION MATERIAL IN THE FORM OF POURABLE MATERIAL HOUSED IN THE FRAME, SAID FRAME COMPRISING AN OUTER HOOD MEMBER AND AN INNER HOOD MEMBER WHICH IS ARRANGED WITHIN THE OUTER HOOD MEMBER IN SPACED RELATIONSHIP THEREWITH, THE TWO HOOD MEMBERS EACH HAVING A PERFORATED WALL AND THE SPACE DEFINED BETWEEN THE TWO HOOD MEMBERS CONTAINING SAID ADSORPTION MATERIAL IN THE FORM OF A SUBSTANTIALLY HOOD-LIKE SHELL, AND SAID HOOD-LIKE FRAME HAVING HOOD EDGE MEANS LOCATED AT THE REGION OF THE MOUTH PORTION.
Claim 3
Dependent Claim
46 words
The filter cartridge as defined in claim 1, wherein both of the hood members forming the frame are in the form of respective hollow substantially truncated pyramids, each of said hollow truncated pyramids having a respective open base located at the region of the mouth portion.
Claim 4
Dependent Claim
35 words
The filter cartridge as defined in claim 2, wherein each hollow truncated pyramid has side walls and a smaller base surface, said side walls and smaller base surface being perforated and define said perforated walls.
Claim 5
Dependent Claim
51 words
The filter cartridge as defined in claim 1, wherein The hood members define an outer hood and an inner hood, and wherein the outer hood possesses a hood floor capable of being opened and located at the end of the outer hood which is opposite the mouth portion of the frame.
Claim 6
Dependent Claim
24 words
The filter cartridge as defined in claim 4, wherein said hood floor capable of being opened comprises an at least approximately flat sliding plate.
Claim 7
Dependent Claim
22 words
The filter cartridge as defined in claim 1, wherein the adsorption material which constitutes the filler for the frame is activated charcoal.
Claim 8
Dependent Claim
49 words
The filter cartridge as defined in claim 1, wherein each of the hood members has a respective mouth edge defining said hood edge means, and the frame is equipped with a mouth frame portion at which there is embedded both of the mouth edges of said two hood members.
Claim 9
Dependent Claim
43 words
The filter cartridge as defined in claim 1, wherein said frame comprises two tubes which are substantially concentrically located within one another and each tube being equipped with perforated wall means, said tubes each being provided at one end thereof with a base.
Claim 10
Dependent Claim
31 words
The filter cartridge as defined in claim 8, wherein said two tubes define an outer tube and an inner tube, and wherein the inner tube is integrally formed with its base.
Claim 11
Dependent Claim
35 words
The filter cartridge as defined in claim 8, wherein said two tubes define an inner tube and an outer tube, and wherein the outer tube possesses a closable stud at the region of its base.
Claim 12
Dependent Claim
52 words
The filter cartridge as defined in claim 8, wherein said two tubes define an inner tube and an outer tube, and wherein the inner tube at the region of its end facing away from its base is widened into a collar, and means for detachably securing the outer tube at said collar.
Claim 13
Dependent Claim
41 words
The filter cartridge as defined in claim 11, wherein said detachably securing means comprises a radially inner recess provided at a jacket surface of the collar with which there can be engaged a radially inwardly directed projection of the outer tube.
Claim 14
Dependent Claim
44 words
The filter cartridge as defined in claim 8, wherein the two tubes define an inner tube and an outer tube, the inner tube being provided with threading at its end facing away from its base for threadably connecting the filter cartridge with a plate.
Claim 15
Dependent Claim
15 words
The filter cartridge as defined in claim 8, wherein both tubes are formed of plastic.
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) | 1978-12-15 | 1979-06-16 | 1979-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-15 | 1983-06-16 | 1983-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-15 | 1987-06-16 | 1987-12-16 | $7700.00 | Window Closed / Lapsed |