US3630001A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Atmospheric control apparatus for a sealed storage structure
Assignee: AO Smith Corp
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Filing: 1969-04-21
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Granted: 1971-12-28
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Expires: 1989-04-21
Abstract
Abstract A sealed storage system such as a silo having a breathing system including a flexible pressure-responsive member having one surface exposed to the pressure within the silo and the opposite surface exposed to atmospheric pressure. An atmosphere control apparatus is provided and includes a gas separator through which gas from the structure is circulated. The separator includes a series of membranes which selectively separate oxygen from the gas so that substantially oxygen-free gas is returned to the storage structure. The atmosphere control apparatus supplies the oxygen-free gas through a reservoir that also contains the silo breathing system.
Inventors
- 👤 Frank D Hamerski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:22
CPC Classifications
A; A23; A23B; A23B2/00; A23B2/70; A23B2/704; A23B2/7045; A01; A01F; A01F25/00; A01F25/16; A01F25/163; B; B01; B01D; B01D53/00; B01D53/22; A01F25/14; A01F2025/147
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
42 words
The unit of claim 1, wherein said first conduit means is connected to the lower end of the storage structure and said second conduit means is connected to the headspace of the storage structure above the level of the material stored therein.
Claim 2
Dependent Claim
24 words
The unit of claim 1, and including means in said reservoir for balancing the pressure of said closed flow system with the atmospheric pressure.
Claim 3
Dependent Claim
76 words
the unit of claim 3, wherein the means in said reservoir for balancing the pressure in the closed flow system with the atmospheric pressure is a flexible pressure-responsive member, one side of said pressure-responsive member being exposed to the atmosphere and the opposite side of said pressure-responsive member being exposed to the pressure of said closed flow system, flexing of said pressure-responsive member acting to balance pressure differentials between the atmosphere and said closed flow system.
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) | 1974-12-27 | 1975-06-28 | 1975-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-12-27 | 1979-06-28 | 1979-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-12-27 | 1983-06-28 | 1983-12-28 | $7700.00 | Window Closed / Lapsed |