Patent US3629995A successfully refreshed from Google Patents.
US3629995A
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A method for reducing moisture content in gas
Assignee: Laclede Gas Co
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Filing: 1969-12-29
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Granted: 1971-12-28
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Expires: 1989-12-29
Abstract
Abstract A method for removing a portion of the moisture from gas streams by passing the gas stream over an efflorescent salt. The invention is particularly useful for natural gaslines from heated basements to outside appliances, such as gaslights, barbecue pits and gasmeters. The efflorescent salt removes sufficient water from the gas in cold weather to keep the line from freezing or moisture condensing in it and the salt regenerates itself in warm outside temperatures by releasing its retained moisture to the gas stream which then can handle more moisture without freezing.
Inventors
- 👤 John Moten Jr
- 👤 Walter A Kluthe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 11:05
CPC Classifications
B; B01; B01D; B01D53/00; B01D53/26
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
16 words
The method of claim 1 wherein the efflorescent material is substantially in equilibrium with ambient temperature.
Claim 2
Dependent Claim
27 words
the gas picking up water vapor from the efflorescent material when the water vapor pressure of the gas is below the equilibrium vapor pressure of the material,
Claim 3
Dependent Claim
38 words
so that the efflorescent material is self-regenerating when the water vapor pressure of the gas is below the equilibrium vapor pressure of the material and b. passing said gas stream from the efflorescent material to a gas appliance.
Claim 4
Dependent Claim
17 words
The method of claim 2 wherein the efflorescent material is self-regenerated when the ambient temperature is raised.
Claim 5
Dependent Claim
32 words
The method of claim 1 including the step of regenerating the efflorescent material by decreasing the water vapor pressure of the gas stream below the equilibrium decomposition pressure of the efflorescent material.
Claim 6
Dependent Claim
25 words
The method of claim 1 wherein the efflorescent material is a salt selected from the group consisting of Na2SO4.10H2O, CuSO4.5H2O, MgSO4.7H2O, ZnSO4.7H2O alums, and schonites.
Claim 7
Dependent Claim
17 words
The metHod of claim 1 wherein the efflorescent material is a salt supported on an inert material.
References Cited (Backward Citations)
US2138689A
Cited
US2196021A
Cited
US2845138A
Cited
US2993563A
Cited
US3205638A
Cited
US3400515A
Cited
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 |