Patent US3730072A successfully refreshed from Google Patents.
US3730072A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air outflow device
Assignee: AR VENTILATION AB
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Filing: 1971-06-01
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Granted: 1973-05-01
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Expires: 1991-06-01
Abstract
Abstract This invention refers to an air outflow device for ventilation plants for dwelling rooms, public rooms and other rooms comprising a casing with an inlet opening for pressurized air and within said casing a partition wall dividing the casing into a pressure chamber and a distribution chamber and having a slot shaped air passage opening. According to the invention, the air passage opening is formed as an air gap between an upwardly directed, tubular socket and a cap above said opening having a peripheral wall portion reaching downwards around the socket, the gap being adjustable by displacement of the cap towards and away from the partition wall for adjusting the width of the air passage opening between the socket and the cap to uniform values around its periphery so as to obtain a uniform and symmetric distribution of the air to the air distributing chamber and from this to the room.
Inventors
- 👤 L Soderlund
- 👤 A Moller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:26
CPC Classifications
F; F24; F24F; F24F13/00; F24F13/02; F24F13/06; F24F13/068; F24F13/08; F24F13/10; F24H; F24H3/00; F24H3/002
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
150 words
An air-distributing device for ventilation plants for rooms, comprising a casing having an inlet for pressurized air, a partition dividing the casing into a pressure chamber and a distribution chamber, a wall closing the distribution chamber and having a plurality of outlets therethrough, said partition having an opening therethrough, a tubular socket surrounding said opening and outstanding from said partition, a cap in alignment with said opening and having a peripheral wall that encompasses said tubular socket to form an annular air passage between said peripheral wall and said tubular socket, and means to adjust the position of the cap toward and away from the tubular socket to control a quantity of air passing from said pressure chamber through said opening and air passage thereby to obtain a uniform and symmetric distribution of the air to the distribution chamber and from the distribution chamber through said outlets to the room.
Claim 2
Dependent Claim
150 words
An air-distributing device for ventilation plants for rooms, comprising a casing having an inlet for pressurized air, a partition dividing the casing into a pressure chamber and a distribution chamber, a wall closing the distribution chamber and having a plurality of outlets therethrough, said partition having an opening therethrough, a tubular socket surrounding said opening and outstanding from said partition, a cap in alignment with said opening and having a peripheral wall that encompasses said tubular socket to form an annular air passage between said peripheral wall and said tubular socket, and means to adjust the position of the cap toward and away from the tubular socket to control a quantity of air passing from said pressure chamber through said opening and air passage thereby to obtain a uniform and symmetric distribution of the air to the distribution chamber and from the distribution chamber through said outlets to the room.
Claim 3
Dependent Claim
50 words
An air outflow device as claimed in claim 1 in which the means for adjusting the air gap comprises of a screw with a guide head for the inner ends of a number of levers, the outer ends of which are hingedly connected with the peripheral wall of the cap.
Claim 4
Dependent Claim
28 words
An air outflow device as claimed in claim 2, characterized in that the screw is accessible for adjusting the air gap after removal of the first-mentioned said wall.
Claim 5
Dependent Claim
39 words
An air outflow device as claimed in claim 2, characterized in that the screw is screwed into a screw-threaded hole in a hub fixedly supported by arms fixedly mounted in the socket and themselves supporting bearings for the levers.
Claim 6
Dependent Claim
33 words
An air outflow device as claimed in claim 1, characterized in that said peripheral wall of the cap is surrounded by a heating winding for heating the air flowing past said peripheral wall.
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) | 1976-04-30 | 1976-10-30 | 1977-05-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-30 | 1980-10-30 | 1981-05-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-30 | 1984-10-30 | 1985-05-01 | $7700.00 | Window Closed / Lapsed |