Patent US3611908A successfully refreshed from Google Patents.
US3611908A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air-conditioning terminal units
Assignee: Individual
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Filing: 1970-03-17
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Granted: 1971-10-12
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Expires: 1990-03-17
Abstract
Abstract The invention provides an air-conditioning terminal unit for use in a room topped by a false ceiling so as to provide a substantially constant air flow into the room and to take advantage, when necessary, of heat that passes from the room into the ceiling space. In the unit, conditioned air is caused to flow through induction nozzles into a discharge chamber which induces air from the ceiling space to flow into the room. A stream of conditioned air, usually from the same source, is passed along a passage containing a damper in opposition to the induced air, so that when the damper is fully open, no air is induced from the ceiling space and when the damper is closed, full induction is possible.
Inventors
- 👤 Hendrik J Spoormaker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:00
CPC Classifications
F; F24; F24F; F24F1/00; F24F1/01; F24F2221/00; F24F2221/14; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/87571; Y10T137/87587; Y10T137/87603; Y10T137/87619
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
336 words
An air-conditioning terminal unit adapted to be mounted above a ceiling in an overhead space, which the ceiling separates from the living space of a room, comprising: a. a discharge chamber defined by a base, sides and a top, b. a first opening in the base of the chamber adapted to be disposed adjacent an opening in the ceiling for delivering air directly into the living space, c. a constantly open second opening in one side of the discharge chamber above the first opening for receiving air from the overhead space, d. conduit means connected to a source of conditioned air, e. discharge means connected to said conduit means and including nozzle means for increasing the velocity of said conditioned air, said nozzle means being located in the top of the chamber adjacent the second opening for projecting a stream of the conditioned air through said chamber and contiguous with the second opening towards the first opening so as to induce and entrain air through the second opening from the overhead space into the stream of conditioned air for delivery of the combined air from the nozzle means and from the second opening through the first opening into the living space, f. air passage means connected to said conduit means and including a discharge opening located adjacent said nozzle means and oN the opposite side thereof from said second opening, and a throttle valve in the air passage means for controlling the passage of air through the discharge opening, g. the relative flow capacities of said discharge means, air passage means and second opening being arranged such with adjustment of said throttle valve the increase or decrease in the volume of air passing through said air passage means and discharge opening is substantially equal to the decrease or increase, respectively, in the combined volume of air passing through said discharge means including nozzle means and said second opening, whereby the flow of air through said first opening into the living space may be maintained substantially constant.
Claim 2
Dependent Claim
336 words
An air-conditioning terminal unit adapted to be mounted above a ceiling in an overhead space, which the ceiling separates from the living space of a room, comprising: a. a discharge chamber defined by a base, sides and a top, b. a first opening in the base of the chamber adapted to be disposed adjacent an opening in the ceiling for delivering air directly into the living space, c. a constantly open second opening in one side of the discharge chamber above the first opening for receiving air from the overhead space, d. conduit means connected to a source of conditioned air, e. discharge means connected to said conduit means and including nozzle means for increasing the velocity of said conditioned air, said nozzle means being located in the top of the chamber adjacent the second opening for projecting a stream of the conditioned air through said chamber and contiguous with the second opening towards the first opening so as to induce and entrain air through the second opening from the overhead space into the stream of conditioned air for delivery of the combined air from the nozzle means and from the second opening through the first opening into the living space, f. air passage means connected to said conduit means and including a discharge opening located adjacent said nozzle means and oN the opposite side thereof from said second opening, and a throttle valve in the air passage means for controlling the passage of air through the discharge opening, g. the relative flow capacities of said discharge means, air passage means and second opening being arranged such with adjustment of said throttle valve the increase or decrease in the volume of air passing through said air passage means and discharge opening is substantially equal to the decrease or increase, respectively, in the combined volume of air passing through said discharge means including nozzle means and said second opening, whereby the flow of air through said first opening into the living space may be maintained substantially constant.
Claim 3
Dependent Claim
26 words
The terminal unit claimed in claim 1 in which the second opening communicates with a light fixture defining a heat-retaining chamber through which air is drawn.
Claim 4
Dependent Claim
34 words
The terminal unit claimed in claim 2 in which the light fixture includes a downwardly facing transparent cover forming part of the heat-retaining chamber and through which light is transmitted to the living space.
Claim 5
Dependent Claim
241 words
An air-conditioning terminal unit adapted to be mounted above a ceiling in an overhead space, which the ceiling separates from the living space of a room, comprising: a housing; a discharge chamber defined by the housing and having a base, sides and a top; a first opening in the base of the chamber adapted to be disposed adjacent an opening in the ceiling for delivering air directly into the living space; constantly open second opening means in sidewalls of the chamber for receiving air from the overhead space; an upper portion of the housing adapted for receiving secondary air from one source at a predetermined temperature for delivery downwardly toward the first opening; a box between the upper portion of the housing and the chamber; means for connecting the box to another source of conditioned air, being a source of primary air; downwardly directed discharge means to the box for delivering primary air toward the first opening past the second opening means to draw air through the latter from the overhead space for delivery to the living space; passageways bypassing the box between the upper portion of the housing and the chamber to deliver secondary air towards the first opening between the flow of primary air in the plenum chamber and the second opening means in at least partial opposition to air entry from the second opening means; and means for controlling the flow of secondary air into the discharge chamber.
Claim 6
Dependent Claim
241 words
An air-conditioning terminal unit adapted to be mounted above a ceiling in an overhead space, which the ceiling separates from the living space of a room, comprising: a housing; a discharge chamber defined by the housing and having a base, sides and a top; a first opening in the base of the chamber adapted to be disposed adjacent an opening in the ceiling for delivering air directly into the living space; constantly open second opening means in sidewalls of the chamber for receiving air from the overhead space; an upper portion of the housing adapted for receiving secondary air from one source at a predetermined temperature for delivery downwardly toward the first opening; a box between the upper portion of the housing and the chamber; means for connecting the box to another source of conditioned air, being a source of primary air; downwardly directed discharge means to the box for delivering primary air toward the first opening past the second opening means to draw air through the latter from the overhead space for delivery to the living space; passageways bypassing the box between the upper portion of the housing and the chamber to deliver secondary air towards the first opening between the flow of primary air in the plenum chamber and the second opening means in at least partial opposition to air entry from the second opening means; and means for controlling the flow of secondary air into the discharge chamber.
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) | 1974-10-11 | 1975-04-12 | 1975-10-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-10-11 | 1979-04-12 | 1979-10-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-10-11 | 1983-04-12 | 1983-10-12 | $7700.00 | Window Closed / Lapsed |