US4255176A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combined air purifier and destratifier
Assignee: Individual
•
Filing: 1979-08-20
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Granted: 1981-03-10
•
Expires: 1999-08-20
Abstract
Abstract A combined unit for purifying and destratifying heated air including a first inlet at a lower area for receiving air to be purified, an air purifier including an air demister and an electrostatic precipitator, a fan for drawing air through the first inlet and moving the air through the air purifier, a second air inlet in a higher area for receiving heated air to be destratified, nozzles for receiving purified air under pressure from the air purifier, venturis associated with the nozzles for creating a suction as purified air leaves the nozzles for causing stratified heated air to be drawn into the second inlet, air outlets for discharging a mixture of purified and destratified heated air, a plate with an opening between the air purifier and the second inlet; and a damper for selectively uncovering the opening for permitting purified air to be discharged through the second inlet.
Inventors
- 👤 Lawrence Macrow
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:22
CPC Classifications
F; F24; F24F; F24F13/00; F24F13/26
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
163 words
A combined unit for purifying and destratifying air comprising a first air inlet in a first area for receiving air to be purified, air purifying means for receiving air from said first inlet and removing foreign matter from said air, a second air inlet at a higher level than said first air inlet for receiving air to be destratified, fan means for moving air through said first air inlet and through said air purifying means, air outlet means including nozzle means for discharging said air received by said unit from said first inlet, venturi means for receiving air discharged from said nozzle means, and duct means for effecting communication between said second air inlet and said venturi means to thereby cause said air being discharged from said nozzle means to draw air through said duct means from said second inlet and cause said air from said second inlet to be discharged through said outlet means along with said air from said first inlet.
Claim 2
Dependent Claim
163 words
A combined unit for purifying and destratifying air comprising a first air inlet in a first area for receiving air to be purified, air purifying means for receiving air from said first inlet and removing foreign matter from said air, a second air inlet at a higher level than said first air inlet for receiving air to be destratified, fan means for moving air through said first air inlet and through said air purifying means, air outlet means including nozzle means for discharging said air received by said unit from said first inlet, venturi means for receiving air discharged from said nozzle means, and duct means for effecting communication between said second air inlet and said venturi means to thereby cause said air being discharged from said nozzle means to draw air through said duct means from said second inlet and cause said air from said second inlet to be discharged through said outlet means along with said air from said first inlet.
Claim 3
Dependent Claim
85 words
A combined unit for purifying and destratifying air as set forth in claim 1 including a plate having an opening therein located between said first and second inlets, and damper means on said plate to cause said air received from said first inlet to be selectively discharged from said air outlet means when said damper means closes said opening and for causing said air received from said first inlet to be discharged from said second inlet when said damper means does not close said opening.
Claim 4
Dependent Claim
199 words
A combined unit for purifying and destratifying air comprising a first air inlet in a first area for receiving air to be purified, air purifying means for receiving air from said first air inlet and removing foreign matter from said air, a second air inlet at a higher level than said first air inlet for receiving air to be destratified, air outlet means for discharging air from said unit, means for moving air from said first air inlet and said purifying means to be discharged from said air outlet means, means for moving air from said second air inlet to be discharged from said air outlet means, a plate separating said first and second air inlets, an opening in said plate, duct means for effecting communication between said first and second air inlets and damper means on said plate to cause air received from said first and second air inlets to be selectively discharged from said air outlet means when said damper means closes said opening and for causing said air received from said first inlet to be passed through said duct means to discharged from said second air inlet when said damper means does not close said opening.
Claim 5
Dependent Claim
199 words
A combined unit for purifying and destratifying air comprising a first air inlet in a first area for receiving air to be purified, air purifying means for receiving air from said first air inlet and removing foreign matter from said air, a second air inlet at a higher level than said first air inlet for receiving air to be destratified, air outlet means for discharging air from said unit, means for moving air from said first air inlet and said purifying means to be discharged from said air outlet means, means for moving air from said second air inlet to be discharged from said air outlet means, a plate separating said first and second air inlets, an opening in said plate, duct means for effecting communication between said first and second air inlets and damper means on said plate to cause air received from said first and second air inlets to be selectively discharged from said air outlet means when said damper means closes said opening and for causing said air received from said first inlet to be passed through said duct means to discharged from said second air inlet when said damper means does not close said opening.
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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) | 1984-03-09 | 1984-09-08 | 1985-03-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-03-09 | 1988-09-08 | 1989-03-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-03-09 | 1992-09-08 | 1993-03-10 | $7700.00 | Window Closed / Lapsed |