US4300925A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas purifying filter
Assignee: Individual
•
Filing: 1980-07-11
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Granted: 1981-11-17
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Expires: 2000-07-11
Abstract
Abstract A gas purifying filter comprises a housing provided with gas inlet and outlet stubs arranged on side walls thereof. Rigidly secured inside the housing are stationary filtering elements fabricated from fibrous chemisorbing material in the form of rectangular plates disposed vertically and arranged essentially in parallel with one another. Opposite side edges of the rectangular plates are connected therebetween in pairs by partitions so as to afford an opening for the passage of gas between the plates facing the partition connecting the side edges of a pair of plates. Mounted above the rectangular plates are liquid compartments, the liquid serving to regenerate the filtering elements and being in contact with the upper section of the plates.
Inventors
- 👤 Gennady A. Nikandrov
- 👤 Alexandr A. Alovyainikov
- 👤 Ljudmila V. Varlamova
- 👤 Alexandr I. Vulikh
- 👤 Jury P. Lopatin
- 👤 Vladimir A. Tikhomirov
- 👤 Vera A. Chebukhanova
- 👤 Pavel S. Preobrazhensky
- 👤 Viktor E. Spiridonov
- 👤 Alexandr G. Zhelonkin
- 👤 Rudolf P. Varlamov
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 17:58
CPC Classifications
B; B01; B01D; B01D46/00; B01D46/10; B01D46/12
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
177 words
A gas purifying filter, comprising: a housing; a gas inlet stub arranged on a side wall of the housing; a gas outlet stub arranged on a side wall of the housing; stationary filtering elements fabricated from fibrous chemisorbing material, said elements constituting rectangular plates formed of said fibrous chemisorbing material and rigidly secured inside said housing, positioned vertically and arranged in parallel with one another, each of said rectangular plates having opposed side edges and an upper section; a first plurality of partitions connecting said side edges of alternate adjacent pairs of said rectangular plates therebetween so as to provide an opening for the passage of gas between the plates essentially opposite the partition connecting said side edges of an adjacent pair of said rectangular plates; and liquid compartments overlying said rectangular plates, the liquid serving to regenerate said stationary filtering elements, each of said compartments defining a space communicating with said upper sections of said fibrous plates and such that the liquid directed into said compartments contacts only said upper sections of said rectangular fibrous plates.
Claim 2
Dependent Claim
177 words
A gas purifying filter, comprising: a housing; a gas inlet stub arranged on a side wall of the housing; a gas outlet stub arranged on a side wall of the housing; stationary filtering elements fabricated from fibrous chemisorbing material, said elements constituting rectangular plates formed of said fibrous chemisorbing material and rigidly secured inside said housing, positioned vertically and arranged in parallel with one another, each of said rectangular plates having opposed side edges and an upper section; a first plurality of partitions connecting said side edges of alternate adjacent pairs of said rectangular plates therebetween so as to provide an opening for the passage of gas between the plates essentially opposite the partition connecting said side edges of an adjacent pair of said rectangular plates; and liquid compartments overlying said rectangular plates, the liquid serving to regenerate said stationary filtering elements, each of said compartments defining a space communicating with said upper sections of said fibrous plates and such that the liquid directed into said compartments contacts only said upper sections of said rectangular fibrous plates.
Claim 3
Dependent Claim
91 words
A gas purifying filter as defined in claim 1, comprising: a second plurality of partitions interconnecting said upper sections of said rectangular plates so that upper portions thereof, extend upwardly beyond said second plurality of partitions; said liquid compartments being in the form of grooves defined by said partitions of said second plurality and said upper portions of said upper plate sections, the liquid serving to regenerate said stationary filtering elements; and said upper sections of the rectangular plates having the ends thereof folded so as to extend into said grooves.
Claim 4
Dependent Claim
117 words
A gas purifying filter as defined in claim 1, comprising: a second plurality of partitions interconnecting said upper sections of said rectangular plates so that upper portions thereof extend upwardly beyond said second plurality of partitions; said liquid compartments being in the form of pipes mounted on said partitions of said second plurality, the pipes having walls adjoining the surfaces of said upper portions of said upper sections of said rectangular fibrous plates, the liquid serving to regenerate said stationary filtering elements; and a plurality of holes arranged in said walls of the pipes serving to feed the regenerating liquid directly to the surfaces of said upper portions of said upper sections of said fibrous rectangular plates.
Claim 5
Dependent Claim
53 words
A gas purifying filter as defined in claim 1 wherein each of said compartments defines a space which communicates with the respective upper sections of a pair of adjacent fibrous plates such that the liquid directed into each said compartment contacts only said upper sections of a respective pair of adjacent fibrous plates.
References Cited (Backward Citations)
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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) | 1984-11-16 | 1985-05-18 | 1985-11-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-11-16 | 1989-05-18 | 1989-11-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-11-16 | 1993-05-18 | 1993-11-17 | $7700.00 | Window Closed / Lapsed |