Patent US3776121A successfully refreshed from Google Patents.
US3776121A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Controlled environmental apparatus for industry
Assignee: Individual
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Filing: 1972-06-23
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Granted: 1973-12-04
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Expires: 1992-06-23
Abstract
Abstract Apparatus is provided for controlling the environment in localized areas or zones of manufacturing and/or assembly plants and the like. A gas or air treating apparatus is connected to an outlet plenum positioned above the space or zone to be controlled. The plenum is provided with a plurality of controlled outlets for directing the treated air, generally downward at a rate progressively increasing in volume from the center of the controlled zone outwardly. The system also includes a plurality of inlet plenums spaced at floor level or slightly thereabove at controlled points adjacent but outside of the area or zone to have the controlled environmental conditions.
Inventors
- 👤 A Truhan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:08
CPC Classifications
F; F24; F24F; F24F9/00; F24F13/00; F24F13/02; F24F13/06; F24F3/00; F24F3/044; Y; Y10; Y10S; Y10S55/00; Y10S55/29
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
222 words
A system for controlling the environment in a zone such that the gas flow in the zone moves generally downwardly at a rate progressively increasing in volume from the center of the zone outwardly comprising an enclosure having top, bottom and side walls, at least one outlet plenum chamber associated with the top wall, the outlet plenum chamber having a planar bottom panel, means defining a plurality of gas outlet openings in the bottom panel, said openings varying in area with the smallest in the center and progressively increasing in area toward the peripheral margins of the controlled zone to thereby provide gas flow within the controlled zone having a progressively increasing velocity head from the center outwardly and substantially coextensively with the cross dimensions of the controlled zone, a plurality of gas inlet plenums positioned surjacent the bottom wall of the enclosure and about the outer periphery of the controlled zone, a gas treating means having a gas inlet and a gas outlet, first conduit means connecting the gas inlet of the gas treating means and the gas inlet plenums, second conduit means connecting the outlet plenum chamber and the outlet from the gas treating means, said gas treating means containing in serial arrangement between the gas inlet and the gas outlet gas moving, heating, cooling, humidifying, dehumidifying and filtering means.
Claim 2
Independent Claim
222 words
A system for controlling the environment in a zone such that the gas flow in the zone moves generally downwardly at a rate progressively increasing in volume from the center of the zone outwardly comprising an enclosure having top, bottom and side walls, at least one outlet plenum chamber associated with the top wall, the outlet plenum chamber having a planar bottom panel, means defining a plurality of gas outlet openings in the bottom panel, said openings varying in area with the smallest in the center and progressively increasing in area toward the peripheral margins of the controlled zone to thereby provide gas flow within the controlled zone having a progressively increasing velocity head from the center outwardly and substantially coextensively with the cross dimensions of the controlled zone, a plurality of gas inlet plenums positioned surjacent the bottom wall of the enclosure and about the outer periphery of the controlled zone, a gas treating means having a gas inlet and a gas outlet, first conduit means connecting the gas inlet of the gas treating means and the gas inlet plenums, second conduit means connecting the outlet plenum chamber and the outlet from the gas treating means, said gas treating means containing in serial arrangement between the gas inlet and the gas outlet gas moving, heating, cooling, humidifying, dehumidifying and filtering means.
Claim 3
Dependent Claim
53 words
The system for controlling the environment in a zone as defined in claim 1 wherein the volume of air issuing from the openings in the bottom panel of the outlet plenum chamber is such as to replace the air in the control zone from about 100 to about 400 plus changes per hour.
Claim 4
Dependent Claim
51 words
A system for controlling the environment in a zone as defined in claim 1 wherein the air issuing from the openings in the bottom panel of the outlet plenum chamber is in the order of from about 5,000 to about 10,000 cubic feet per minute per 100 sq. ft. of area.
Claim 5
Dependent Claim
26 words
A system for controlling the environment in a zone as defined in claim 1 wherein the planar bottom panel of the outlet plenum chamber is rectangular.
Claim 6
Dependent Claim
26 words
A system for controlling the environment in a zone as defined in claim 1 wherein the planar bottom panel of the outlet plenum chamber is circular.
References Cited (Backward Citations)
US3303771A
Cited
US3505989A
Cited
US3426512A
Cited
US3602212A
Cited
US3625133A
Cited
US3511162A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-12-03 | 1977-06-04 | 1977-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-03 | 1981-06-04 | 1981-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-03 | 1985-06-04 | 1985-12-04 | $7700.00 | Window Closed / Lapsed |