Patent US3740928A successfully refreshed from Google Patents.
US3740928A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for adsorbing carbon dioxide from air in a storage system
Assignee: Sulzer AG
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Filing: 1972-04-20
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Granted: 1973-06-26
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Expires: 1992-04-20
Abstract
Abstract The system for circulating the air from the storage room and for regenerating the active solid adsorbent in the adsorption chamber includes a reversible blower and a series of check valves. The check valves alternately close off the adsorption chamber either from the storage room or from a source of desorbent while opening the chamber to the source of desorbent or the storage room, respectively. The check valves are controlled by the pressure of the air in the storage room and the pressure of the desorbent.
Inventors
- 👤 E Schmid
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 13:55
CPC Classifications
B; B01; B01D; B01D53/00; B01D53/02; B01D53/04; B01D53/0454; A; A23; A23B; A23B2/00; A23B2/70; A23B2/704; A23B2/7045; A23B2/708; A23B2/712; B01D53/0407; B63; B63G; B63G8/00; B63G8/36; B01D2253/00; B01D2253/10; B01D2253/102; B01D2257/00; B01D2257/50; B01D2257/504; B01D2259/00; B01D2259/40; B01D2259/40083; B01D2259/40086; B01D2259/402; B01D2259/45; Y; Y02; Y02C; Y02C20/00; Y02C20/40
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
129 words
An apparatus for adsorbing carbon dioxide from air present in a storage room for perishable products comprising at least one adsorption chamber containing a solid adsorbent therein; a first line connected to said chamber; a reversible blower in said line; a first pair of lines for conveying air from the storage room through said blower, said line and said adsorption chamber and back to the storage room; a second pair of lines for conveying a desorbent through said adsorption chamber, said line and said blower to regenerate said solid adsorbent; and a plurality of check valves, each check valve being disposed in a respective one of said pairs of lines for alternately opening and closing said respective line in response to the pressure of air or desorbent respectively therein.
Claim 2
Independent Claim
129 words
An apparatus for adsorbing carbon dioxide from air present in a storage room for perishable products comprising at least one adsorption chamber containing a solid adsorbent therein; a first line connected to said chamber; a reversible blower in said line; a first pair of lines for conveying air from the storage room through said blower, said line and said adsorption chamber and back to the storage room; a second pair of lines for conveying a desorbent through said adsorption chamber, said line and said blower to regenerate said solid adsorbent; and a plurality of check valves, each check valve being disposed in a respective one of said pairs of lines for alternately opening and closing said respective line in response to the pressure of air or desorbent respectively therein.
Claim 3
Dependent Claim
31 words
An apparatus as set forth in claim 1 wherein said line is connected in common to one of said first pair of lines and one of said second pair of lines.
Claim 4
Dependent Claim
75 words
An apparatus as set forth in claim 1 further comprising a pair of said adsorption chambers connected in parallel, a first said line connected to each chamber, a blower in each said line; pairs of branch lines connected in parallel between each line of said pairs of lines and said first lines respectively and check valves in each said branch lines whereby said chambers are operable in alternation with each other for adsorption and regeneration.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-06-25 | 1976-12-25 | 1977-06-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-25 | 1980-12-25 | 1981-06-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-25 | 1984-12-25 | 1985-06-26 | $7700.00 | Window Closed / Lapsed |