Patent US3653431A successfully refreshed from Google Patents.
US3653431A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air conditioner closet door construction
Assignee: Trane US Inc
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Filing: 1970-11-05
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Granted: 1972-04-04
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Expires: 1990-11-05
Abstract
Abstract An air conditioner within the closet of a living space, said closet having a special access door equipped with dampered openings adjacent its top and bottom edges. During the cooling season the air conditioner draws its supply air from the upper door openings, and during the heating season the air conditioner draws its supply air through the lower door openings. The invention improves air conditioner efficiency and minimizes stratification and temperature differentials between the floor and ceiling.
Inventors
- 👤 Joseph D Loveley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 01:31
CPC Classifications
F; F24; F24F; F24F13/00; F24F13/20; F24F3/00
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
166 words
In a building construction comprising a closet communicating with a room through a door opening of adult height; an air conditioneR located within the closet; said conditioner comprising (1) a casing having a return air inlet for receiving air from the closet space, (2) air heating and cooling means within the casing, and (3) a blower for flowing air from the inlet through the heating and cooling means to the casing outlet: the improvement comprising a door for the closet opening; said door having a first air passage therethrough adjacent its upper edge and a second air passage therethrough adjacent its lower edge, and a unitary damper operable to close the first air passage during the heating season and to close the second air passage during the cooling season; whereby the air conditioner receives air solely from the lower spaces of the room during the heating season, and whereby the air conditioner receives air solely from the upper spaces of the room during the cooling season.
Claim 2
Dependent Claim
166 words
In a building construction comprising a closet communicating with a room through a door opening of adult height; an air conditioneR located within the closet; said conditioner comprising (1) a casing having a return air inlet for receiving air from the closet space, (2) air heating and cooling means within the casing, and (3) a blower for flowing air from the inlet through the heating and cooling means to the casing outlet: the improvement comprising a door for the closet opening; said door having a first air passage therethrough adjacent its upper edge and a second air passage therethrough adjacent its lower edge, and a unitary damper operable to close the first air passage during the heating season and to close the second air passage during the cooling season; whereby the air conditioner receives air solely from the lower spaces of the room during the heating season, and whereby the air conditioner receives air solely from the upper spaces of the room during the cooling season.
Claim 3
Dependent Claim
29 words
The construction of claim 1 wherein the damper comprises a damper plate slidably mounted on one face of the door for vertical mo ement between selected positions of adjustment.
Claim 4
Dependent Claim
25 words
The construction of claim 1 wherein each air passage is subdivided into multiple air passage sections by horizontal louvers within the plane of the door.
Claim 5
Dependent Claim
39 words
The construction of claim 1 wherein each air passage has a width approaching the door width and a height approaching one-half the door height, whereby each passage provides an extensive area flow path for return air to the conditioner.
References Cited (Backward Citations)
US2139262A
Cited
GB1077734A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-04-04 | 1975-10-04 | 1976-04-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-04-04 | 1979-10-04 | 1980-04-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-04-04 | 1983-10-04 | 1984-04-04 | $7700.00 | Window Closed / Lapsed |