US4489645A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air conditioned room and method for using same
Assignee: GLATT MASCHINEN- und APPARATEBAU AG
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Filing: 1982-03-05
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Granted: 1984-12-25
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Expires: 2002-03-05
Abstract
Abstract A clean-room chamber designed as a walkable clean-room cabin (1) has a front wall (7) with an entrance (13). A machine, e.g. a tablet press (41) is placed in the cabin. Above the entrance (13), a vertically adjustable air-supply member (17) for the formation of an air-curtain (71) is arranged. On the ceiling (11) of the cabin (1), in its front part, an air-supply member (29) with an outlet that is vertically adjustable and may be swung around a horizontal axis of rotation that is parallel to the front wall (7), has been mounted. With the aid of that outlet, a dust-displacement current is generated that is directed toward the machine (41) and but slightly turbulent. In the lower part of the rear wall (9), an exhaust device (43) has been mounted that is connected with the inputs of two blowers (27), the outputs of which are connected with the air-supply members (17, 29), while the air is filtered by means of high-performance mechanical filters (25 ) before being fed into the cabin. The aspirating surface (45) of the exhaust member (43) has been provided, in the air shadow of the machine (41) with a covering or recess that is impermeable to air. The cabin (1) makes it possible to keep the dust concentration of the air around the machine (41) low, at a low energy expenditure.
Inventors
- 👤 Edgar Sirch
- 👤 Jurgen Vicariesmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 01:21
CPC Classifications
B; B01; B01L; B01L1/00; B01L1/04; F; F24; F24F; F24F13/00; F24F13/02; F24F13/06; F24F13/065; F24F8/00; F24F8/10; F24F8/108; F24F9/00
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
203 words
A clean room chamber comprising: a. a housing with a rear wall, two side walls, a front wall defining an entrance opening opposite said rear wall, and a ceiling; b. air curtain means defining an air outlet for providing a downwardly directed air curtain at said entrance opening; c. air supply means positioned above said entrance opening between said front wall and said rear wall and nearer to the front wall and including an air outlet opening into the interior of the chamber for supplying air to the interior of said chamber; d. exhaust means forming a suction surface extending over at least a part of said rear wall; e. pump means connected with and for supplying air to said air curtain means and to said air supplying means; f. filter means positioned upstream of said outlet of said air curtain means and upstream of said outlet of said air supply means; g. said air outlet of said air supply means being pivotable in relation to a horizontal axis substantially parallel to said front wall of said housing so that said air outlet can be positioned for producing a substantially turbulence-free, dust displacing air current directed downwardly and rearwardly toward said suction surface.
Claim 2
Dependent Claim
203 words
A clean room chamber comprising: a. a housing with a rear wall, two side walls, a front wall defining an entrance opening opposite said rear wall, and a ceiling; b. air curtain means defining an air outlet for providing a downwardly directed air curtain at said entrance opening; c. air supply means positioned above said entrance opening between said front wall and said rear wall and nearer to the front wall and including an air outlet opening into the interior of the chamber for supplying air to the interior of said chamber; d. exhaust means forming a suction surface extending over at least a part of said rear wall; e. pump means connected with and for supplying air to said air curtain means and to said air supplying means; f. filter means positioned upstream of said outlet of said air curtain means and upstream of said outlet of said air supply means; g. said air outlet of said air supply means being pivotable in relation to a horizontal axis substantially parallel to said front wall of said housing so that said air outlet can be positioned for producing a substantially turbulence-free, dust displacing air current directed downwardly and rearwardly toward said suction surface.
Claim 3
Dependent Claim
22 words
The chamber of claim 1 wherein said air outlet of said air supply means is vertically adjustable relative to said entrance opening.
Claim 4
Dependent Claim
21 words
The chamber of claim 1 wherein said air outlet of said air supply means is subdivided into a plurality of openings.
Claim 5
Dependent Claim
28 words
The chamber of claim 1 wherein said suction surface includes obstruction means between opposite edges thereof to obstruct the flow therethrough in a portion of the suction surface.
Claim 6
Dependent Claim
24 words
The chamber of claim 1 wherein said rear wall and said ceiling are connected by an inclined flow guide surface above said suction surface.
Claim 7
Dependent Claim
17 words
The chamber of claim 1 wherein said air outlet of said air curtain means is vertically adjustable.
Claim 8
Dependent Claim
19 words
The chamber of claim 1 including a particulate material processing machine and air exhaust means associated with said machine.
Claim 9
Dependent Claim
63 words
The chamber of claim 1 wherein the distance between said front wall and a longitudinal edge of said outlet opening of said air supply means, said longitudinal edge being furthest from said front wall, is no closer to said rear wall than 60% of the maximum depth of the interior of the chamber measured horizontally from said front wall to said rear wall.
Claim 10
Dependent Claim
30 words
The chamber of claim 1 wherein said air outlet of said air supply means extends laterally for a distance of at least 50% of the distance between said side walls.
Claim 11
Dependent Claim
19 words
The chamber of claim 3 wherein said air outlet of said air supply means is subdivided by intersecting ledges.
Claim 12
Dependent Claim
55 words
The chamber of claim 4 wherein said obstruction means are dimensioned for obstructing approximately that portion of the suction surface that is covered by a working device to be positioned in the chamber and lying in the air current path, the suction surface having unobstructed portions above and on both sides of said obstruction means.
Claim 13
Dependent Claim
27 words
The chamber of claim 1, wherein said filter means comprises a high performance filter for suspended particles positioned upstream of said outlet of said air supply means.
Claim 14
Dependent Claim
26 words
The chamber of claim 12, wherein said high performance filter for suspended particles is incorporated in said air supply means and is mounted to said ceiling.
Claim 15
Dependent Claim
28 words
The chamber of claim 1, wherein said suction surface extends over a part of the height of the clean room chamber interior and is spaced from said ceiling.
Claim 16
Dependent Claim
63 words
The chamber of claim 1, wherein the distance between said front wall and a longitudinal edge of said outlet opening of said air supply means, said longitudinal edge being furthest from said front wall, is no closer to said rear wall than 50% of the maximum depth of the interior of the chamber measured horizontally from said front wall to said rear wall.
Claim 17
Dependent Claim
41 words
The chamber of claim 1, wherein said air outlet of said air supply means is spaced horizontally from said front wall a distance at least 5% of the maximum depth of the interior of the chamber measured in the same direction.
Claim 18
Dependent Claim
41 words
The chamber of claim 1, wherein said air outlet of said air supply means is spaced horizontally from said front wall a distance at least 10% of the maximum depth of the interior of the chamber measured in the same direction.
Claim 19
Dependent Claim
29 words
The chamber of claim 1, wherein the air outlet defined by said air curtain means is spaced downwardly and forwardly of said air outlet of said air supply means.
Claim 20
Dependent Claim
28 words
The chamber of claim 1, wherein said filter means includes a high performance filter for suspended particles upstream of said air outlet defined by said air curtain means.
Claim 21
Dependent Claim
20 words
The chamber of claim 1, further comprising connecting means connecting said exhaust means with the inlet of said pump means.
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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) | 1987-12-25 | 1988-06-25 | 1988-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-12-25 | 1992-06-25 | 1992-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-12-25 | 1996-06-25 | 1996-12-25 | $7700.00 | Window Closed / Lapsed |