US3817159A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ducted air conditioning system and combination duct therefor
Assignee: MERCANTILE TEXAS CREDIT Corp
•
Filing: 1973-03-19
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Granted: 1974-06-18
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Expires: 1993-03-19
Abstract
Abstract An air conditioning system for supplying conditioned air to a plurality of zones. A combination supply and return air duct connects the fan coil unit of either an incremental air conditioner or a central system with each of the zones to be supplied with conditioned air. The combination duct comprises a length of conduit having a partition extending therethrough to thus form supply and return air sections which are substantially completely sealed from each other, each of such sections being provided with a plurality of openings therein communicating the respective sections with the ambient environment in the zones and the return air section communicating with the fan coil unit for recycling of return air thereto.
Inventors
- 👤 J Bennett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 14:28
CPC Classifications
F; F24; F24F; F24F7/00; F24F7/04; F24F7/06; F24F7/08; F24F13/00; F24F13/02; Y; Y10; Y10S; Y10S138/00; Y10S138/04
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
168 words
An air conditioning system for supplying conditioned air to a plurality of zones, comprising air distribution means in a first of said zones adapted to supply conditioned air thereto and to receive return air therefrom, said distribution means having at least one combination supply/return air duct connected thereto and extending therefrom to at least one other zone to be air conditioned, said duct being internally partitioned lengthwise to provide a first section adapted to convey supply air from said distribution means to each of said other zones and a second section adapted to convey return air from each of said other zones to said distribution means, the said first section of said duct being provided with at least one opening therein in each of said other zones in communication with the respective zones and said second duct sections having at least one opening therein in each of said other zones in communication with the respective zones, said first and second sections being substantially completely sealed from each other.
Claim 2
Dependent Claim
168 words
An air conditioning system for supplying conditioned air to a plurality of zones, comprising air distribution means in a first of said zones adapted to supply conditioned air thereto and to receive return air therefrom, said distribution means having at least one combination supply/return air duct connected thereto and extending therefrom to at least one other zone to be air conditioned, said duct being internally partitioned lengthwise to provide a first section adapted to convey supply air from said distribution means to each of said other zones and a second section adapted to convey return air from each of said other zones to said distribution means, the said first section of said duct being provided with at least one opening therein in each of said other zones in communication with the respective zones and said second duct sections having at least one opening therein in each of said other zones in communication with the respective zones, said first and second sections being substantially completely sealed from each other.
Claim 3
Dependent Claim
19 words
An air conditioning system according to claim 1, wherein said air distribution means comprises a self-contained fan coil unit.
Claim 4
Dependent Claim
24 words
An air conditioning system according to claim 1, wherein said air distribution system means comprises the terminal fan coil unit of a central system.
Claim 5
Dependent Claim
51 words
An air conditioning system according to claim 2, wherein said fan coil unit is incorporated in a console which is mounted in an exterior wall of said first zone, said duct extending laterally from said unit into at least one adjacent zone separated from said first zone by a wall partition.
Claim 6
Dependent Claim
60 words
An air conditioning system according to claim 4, wherein the combination duct extends between the furthest zones to be air conditioned and the sides of the console, said return sections being provided with vertical branches connected adjacent their lower ends to the bottom of said console to direct return air from said other zones to the interior of said console.
Claim 7
Dependent Claim
54 words
An air conditioning system according to claim 3, wherein said terminal fan coil unit is positioned within an enclosure therefor, said enclosure being mounted in an exterior wall of said first zone, said duct extending laterally from said enclosure into at least one adjacent zone separated from said first zone by a wall partition.
Claim 8
Dependent Claim
88 words
An air conditioning system according to claim 6, wherein the combination duct extends between the furthest zones to be air conditioned and the sides of said enclosure, said return section being provided with at least one opening adjacent each side of the enclosure for directing return air to an intermediate opening in the sides thereof, a partition being located adjacent each side of said enclosure so as to define an enclosed space therebetween, the said at least one opening in the return section being located within said space.
Claim 9
Dependent Claim
88 words
An air conditioning system according to claim 4, wherein the combination duct extends between the furthest zones to be air conditioned and the sides of said console, said return section being provided with at least one opening adjacent each side of the console for directing return air to an intermediate opening in the sides thereof, a partition being located adjacent each side of said console so as to define an enclosed space therebetween, the said at least one opening in the return section being located within said space.
Claim 10
Dependent Claim
61 words
In an air conditioning system according to claim 6, wherein the combination duct extends between the furthest zones to be air conditioned and the sides of the enclosure, said return sections being provided with vertical branches connected adjacent their lower ends to the bottom of said enclosure to direct return air from said other zones to the interior of said enclosure.
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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) | 1977-06-17 | 1977-12-17 | 1978-06-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-17 | 1981-12-17 | 1982-06-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-17 | 1985-12-17 | 1986-06-18 | $7700.00 | Window Closed / Lapsed |