US3894345A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drying device
Assignee: Individual
•
Filing: 1974-09-16
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Granted: 1975-07-15
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Expires: 1994-09-16
Abstract
Abstract A stack adapted to absorb and retain solar heat surmounts a chamber accommodating moisture-containing material to be dried by ambient air. The absorbed solar heat expands air within the stack, thereby exhausting the air therein and inducing the aforesaid ambient air to flow through the stack.
Inventors
- 👤 Walter Zeltmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 20:35
CPC Classifications
F; F26; F26B; F26B3/00; F26B3/28; F26B3/283; F26B3/286; Y; Y02; Y02B; Y02B40/00; Y02B40/18; Y10; Y10S; Y10S126/00; Y10S126/907
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
317 words
In a drying device surrounded by an atmosphere containing air through which solar radiation is transmitted, the combination comprising: a. a hollow stack having an interior region and a mouth communicating between said interior region and said surrounding atmosphere; b. a chamber surmounted by and communicating with the interior region of said hollow stack, and accommodating matter containing evaporable moisture; c. said chamber being provided with at least one aperture communicating with the atmosphere surrounding said drying device; d. said hollow stack being provided with means for absorbing and retaining solar radiation including: i. an outer wall composed of glass accommodating the transmission of short wave radiation but opposing the transmission of long wave radiation; ii. an inner wall provided with a blackened surface confronting said outer wall and a silvered surface coNfronting the interior region of said hollow stack, said inner wall accommodating the transmission of heat therethrough and reflecting such heat to the interior region of said hollow stack; iii. an air space between said outer wall and said inner wall; iv. said air space communicating with said chamber; v. air within said air space being heated by said short wave radiation, whereby said air is communicated to said chamber, thereby forming a partial vacuum in said air space; vi. closure means connecting the upper ends of said outer and inner walls; e. a column of air disposed within the interior region of said hollow stack and exhaustible through the mouth of said stack when the interior region of said hollow stack is heated; f. the exhaust of said column of air from the mouth of said hollow stack thereby creating a draft of air from said aperture with which said chamber is provided through said chamber and said hollow stack; g. said matter containing evaporable moisture being exposed to said draft of air; h. said evaporable moisture being absorbable in said draft of air.
Claim 2
Dependent Claim
317 words
In a drying device surrounded by an atmosphere containing air through which solar radiation is transmitted, the combination comprising: a. a hollow stack having an interior region and a mouth communicating between said interior region and said surrounding atmosphere; b. a chamber surmounted by and communicating with the interior region of said hollow stack, and accommodating matter containing evaporable moisture; c. said chamber being provided with at least one aperture communicating with the atmosphere surrounding said drying device; d. said hollow stack being provided with means for absorbing and retaining solar radiation including: i. an outer wall composed of glass accommodating the transmission of short wave radiation but opposing the transmission of long wave radiation; ii. an inner wall provided with a blackened surface confronting said outer wall and a silvered surface coNfronting the interior region of said hollow stack, said inner wall accommodating the transmission of heat therethrough and reflecting such heat to the interior region of said hollow stack; iii. an air space between said outer wall and said inner wall; iv. said air space communicating with said chamber; v. air within said air space being heated by said short wave radiation, whereby said air is communicated to said chamber, thereby forming a partial vacuum in said air space; vi. closure means connecting the upper ends of said outer and inner walls; e. a column of air disposed within the interior region of said hollow stack and exhaustible through the mouth of said stack when the interior region of said hollow stack is heated; f. the exhaust of said column of air from the mouth of said hollow stack thereby creating a draft of air from said aperture with which said chamber is provided through said chamber and said hollow stack; g. said matter containing evaporable moisture being exposed to said draft of air; h. said evaporable moisture being absorbable in said draft of air.
Claim 3
Dependent Claim
91 words
In a device according to claim 1: a. said outer wall including a tapered portion communicating with said chamber; b. said inner wall including an inclined portion disposed parallel to said tapered portion of said outer wall; c. said tapered portion of said outer wall being connected to vertical side walls of said chamber surmounting a horizontal base thereof; d. said air space extending between said tapered portion of said outer wall and said inclined portion of said inner wall; e. said air space communicating with the interior of said chamber.
Claim 4
Dependent Claim
27 words
In a device according to claim 1, means for introducing said matter containing evaporable moisture into said chamber and for removing said matter containing evaporable moisture therefrom.
Claim 5
Dependent Claim
122 words
In a device according to claim 3, said means for introducing said matter containing evaporable moisture into said chamber and for removing said matter containing evaporable moisture therefrom including: a. a first inclined chute accommodating said matter containing evaporable moisture; b. conveyor means adjacent to said inclined chute, whereby said matter containing evaporable moisture may be disposed upon said conveyor means and removed into said chamber; c. said conveyor means extending through said aperture into said chamber; d. a second inclined chute disposed adjacent to said conveyor means and accommodating said matter containing evaporable moisture after it has been disposed in said chamber, thereby permitting removal of said matter containing evaporable moisture from said chamber after exposure to said draft of air.
Claim 6
Dependent Claim
38 words
In a device according to claim 2, the inclination of said tapered portion of said chamber being perpendicular to the average annual direction of the sun''s rays upon that part of the earth where said device is located.
Claim 7
Dependent Claim
31 words
In a device according to claim 2, the inclined portion of said inner wall reflecting heat upon the area intended for occupancy by said matter containing evaporable moisture within said chamber.
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) | 1978-07-14 | 1979-01-13 | 1979-07-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-07-14 | 1983-01-13 | 1983-07-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-07-14 | 1987-01-13 | 1987-07-15 | $7700.00 | Window Closed / Lapsed |