Patent US4014107A successfully refreshed from Google Patents.
US4014107A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drying kiln for lumber
Assignee: Individual
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Filing: 1976-04-07
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Granted: 1977-03-29
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Expires: 1996-04-07
Abstract
Abstract A drying kiln for lumber. The kiln comprises a drying chamber having two spaced drying sections each to receive a stack of lumber. There is a second chamber above the drying chamber and drivable, reversible, circulating means in the second chamber. The kiln also has heating means for air circulated by the circulating means. A first passageway permits the circulating means to force heated air across the drying sections, across the space between them and back to the circulating means. A second passageway extends downwardly into the space between the dryer section. There is a first and a second closable inlet for the second passageway. Each inlet is positioned on a side of the circulating means to receive a proportion of air forced towards it by the circulating means. A plurality of outlets to said space are in said second passageway. Means control the first and second inlets whereby if one is open the other is closed.
Inventors
- 👤 Jakob L. Bachrich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 07:26
CPC Classifications
F; F26; F26B; F26B21/00; F26B21/20; F26B21/202; F26B21/30; F26B2210/00; F26B2210/16
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
144 words
A drying kiln for lumber comprising a drying chamber having two spaced drying sections each to receive a stack of lumber; a second chamber above the drying chamber; drivable, reversible, circulating means in the second chamber; heating means for air circulated by the circulating means; a first passageway permitting the circulating means to force heated air across the drying sections, across the space between them and back to the circulating means; a second passageway extending downwardly into the space between the dryer sections; a first and second closable inlet for the second passageway, each inlet positioned on a side of the circulating means to receive a proportion of air forced towards it by the circulating means; a plurality of outlets to said space in said second passageway; and means controlling the first and second inlets whereby if one is open the other is closed.
Claim 2
Dependent Claim
144 words
A drying kiln for lumber comprising a drying chamber having two spaced drying sections each to receive a stack of lumber; a second chamber above the drying chamber; drivable, reversible, circulating means in the second chamber; heating means for air circulated by the circulating means; a first passageway permitting the circulating means to force heated air across the drying sections, across the space between them and back to the circulating means; a second passageway extending downwardly into the space between the dryer sections; a first and second closable inlet for the second passageway, each inlet positioned on a side of the circulating means to receive a proportion of air forced towards it by the circulating means; a plurality of outlets to said space in said second passageway; and means controlling the first and second inlets whereby if one is open the other is closed.
Claim 3
Dependent Claim
21 words
A drying kiln as claimed in claim 1 in which the circulating means is a fan driven by an electric motor.
Claim 4
Dependent Claim
30 words
A drying kiln as claimed in claim 1 in which the heating means is a heat exchanger positioned in the first passageway, one on each side of the circulating means.
Claim 5
Dependent Claim
47 words
A drying kiln as claimed in claim 1 in which the second passageway is formed of ducting having upper ends defining the first and second inlets, each inlet closable by a door, the ducting joining in a pipe that extends into the space between the drying sections.
Claim 6
Dependent Claim
26 words
A drying kiln as claimed in claim 4 in which the outlets to the space are defined by branch pipes extending from the downwardly extending pipe.
Claim 7
Dependent Claim
46 words
A drying kiln as claimed in claim 1 in which the circulating means are high velocity fans and the means controlling the first and second inlets comprises, barometric doors, one to each inlet, openable by pressure applied on the side of the door adjacent the fan.
Claim 8
Dependent Claim
44 words
A drying kiln as claimed in claim 1 in which the means controlling the first and second inlets is a mechanical linkage by a reciprocable piston so that it the means controlling the inlets may be moved to a desired position, closed or open.
Claim 9
Dependent Claim
28 words
A drying kiln as claimed in claim 7 in which the circulating means is provided with a timer whereby its direction of circulation is varied at predetermined intervals.
Claim 10
Dependent Claim
38 words
A drying kiln as claimed in claim 8 in which the linkage of the first and second inlets is also controlled by the timer so that as the fan reverses the means controlling the inlets change their positions.
Claim 11
Dependent Claim
17 words
A drying kiln as claimed in claim 9 in which the piston is operated pneumatically or hydraulically.
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) | 1980-03-28 | 1980-09-27 | 1981-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-03-28 | 1984-09-27 | 1985-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-03-28 | 1988-09-27 | 1989-03-29 | $7700.00 | Window Closed / Lapsed |