Patent US3691929A successfully refreshed from Google Patents.
US3691929A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air control system
Assignee: Laminated Wood Products Co
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Filing: 1971-03-16
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Granted: 1972-09-19
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Expires: 1991-03-16
Abstract
Abstract A system of controlling the movement of forced air and the mix of this air through the utilization of synchronized panels which selectively vary the amount of outside air and recirculating air introduce into a mixing chamber for forced discharge into the storage house. An exhaust opening with a controlling panel therefor can be incorporated in the system and synchronized with the intake air closure panel and the circulating air closure panel.
Inventors
- 👤 Fred W Huling Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 13:58
CPC Classifications
F; F24; F24F; F24F7/00; F24F7/007; A; A01; A01K; A01K1/00; A01K1/0047; A01K1/0064
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
192 words
A ventilation system for produce and the like, said system comprising a produce storage building, first and second chambers separably communicating with the interior of the building through first and second openings, a third opening communicating said first and second chambers with each other, a closure panel associated with said third opening for a variable opening and closing thereof, a fourth opening and associated closure panel communicating the first chamber with the ambient air, air moving means in said first chamber positioned adjacent and discharging through said first opening into the building, said third and fourth openings being located in a manner whereby said air moving means can effect a forced drawing of air therethrough for discharge into the building, closure operating means engaging said closure panels for A synchronized movement thereof to effect a selective and variable opening and closing of the third and fourth openings in a predetermined relation to each other to achieve a desired relationship between the amount of air moved therethrough by the air moving means, said closure panels sliding relative to the associated openings, and means mounting said panels for sliding movement relative to said openings.
Claim 2
Dependent Claim
192 words
A ventilation system for produce and the like, said system comprising a produce storage building, first and second chambers separably communicating with the interior of the building through first and second openings, a third opening communicating said first and second chambers with each other, a closure panel associated with said third opening for a variable opening and closing thereof, a fourth opening and associated closure panel communicating the first chamber with the ambient air, air moving means in said first chamber positioned adjacent and discharging through said first opening into the building, said third and fourth openings being located in a manner whereby said air moving means can effect a forced drawing of air therethrough for discharge into the building, closure operating means engaging said closure panels for A synchronized movement thereof to effect a selective and variable opening and closing of the third and fourth openings in a predetermined relation to each other to achieve a desired relationship between the amount of air moved therethrough by the air moving means, said closure panels sliding relative to the associated openings, and means mounting said panels for sliding movement relative to said openings.
Claim 3
Dependent Claim
48 words
The system of claim 1 wherein said panels move between two extreme positions, a first position wherein the third opening is completely open and the fourth opening is completely closed, and a second position wherein the third opening is completely closed and the fourth opening is completely open.
Claim 4
Dependent Claim
65 words
The system of claim 2 wherein said closure operating means comprises first elongated flexible means engaged between the upper ends of the panels and second elongated flexible means engaged between the lower ends of said panels, said flexible means moving over guide means between the panels and being tensioned whereby a movement of one panel is directly translated into a movement of the second panel.
Claim 5
Dependent Claim
22 words
The system of claim 3 including a fifth opening and associated closure panel communicating the building interior directly with the ambient air.
Claim 6
Dependent Claim
56 words
The system of claim 4 wherein said panel associated with the fifth opening is selectively movable between a first position closing the fifth opening and a second position completely opening the fifth opening, said closure operating means engaging the panel associated with the fifth opening and syncronizing the operation thereof with the two previously mentioned panels.
Claim 7
Dependent Claim
24 words
The system of claim 5 wherein said first and second chambers are formed within a housing located exteriorly of and immediately adjacent said building.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-09-19 | 1976-03-20 | 1976-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-09-19 | 1980-03-20 | 1980-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-09-19 | 1984-03-20 | 1984-09-19 | $7700.00 | Window Closed / Lapsed |