US4976757A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Filtration plenum module constructed for on-site assembly
Assignee: COMP-AIRE SYSTEMS Inc A CORP OF MI
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Filing: 1989-05-04
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Granted: 1990-12-11
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Expires: 2009-05-04
Abstract
Abstract A filter plenum module has upper and lower peripheral frame extrusions providing vertically opposite and facing channels receiving side panels secured with fastenings traversing the inner flanges of the channels to engage the panels. Top closure panels are received on horizontal flanges of the top peripheral frame. Fastening and caulking are thus applied all from the inside, as the modules are constructed. Top panels are interconnected by reinforcing beams carried exclusively by the panels. These beams provide the principal support for the grid beams supporting the filter units. The peripheral beams also carry terminals that can be selectively placed to support the plenum assembly, according to the conditions available in the ceiling structure at the point of installation. Angle members are inserted in receptacle channels at the mitered corners of the peripheral beam extrusions for initial alignment.
Inventors
- 👤 Martin C. Helmus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:49
CPC Classifications
F; F24; F24F; F24F3/00; F24F3/12; F24F3/16; F24F3/167
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
131 words
A modular filter plenum, comprising: an upper peripheral frame having a cross-section providing a downwardly-open channel defined by spaced inner and outer vertical flanges, and also providing a horizontal inner shelf; a lower peripheral frame having a cross-section providing an upwardly open first channel defined by spaced vertical inner and outer vertical flanges, and in vertical alignment with said downwardly-open channel, and also providing an upwardly open sealing channel disposed below said first channel, said lower peripheral frame having means adapted to receive and support filter elements engaging said sealing channel; vertical panels having the vertically opposite edges thereof received in said downwardly open and first upwardly open channels, respectively; horizontal panel means received on said shelf; and securing means traversing said inner flanges and shelf, and engaging said panels, respectively.
Claim 2
Dependent Claim
131 words
A modular filter plenum, comprising: an upper peripheral frame having a cross-section providing a downwardly-open channel defined by spaced inner and outer vertical flanges, and also providing a horizontal inner shelf; a lower peripheral frame having a cross-section providing an upwardly open first channel defined by spaced vertical inner and outer vertical flanges, and in vertical alignment with said downwardly-open channel, and also providing an upwardly open sealing channel disposed below said first channel, said lower peripheral frame having means adapted to receive and support filter elements engaging said sealing channel; vertical panels having the vertically opposite edges thereof received in said downwardly open and first upwardly open channels, respectively; horizontal panel means received on said shelf; and securing means traversing said inner flanges and shelf, and engaging said panels, respectively.
Claim 3
Dependent Claim
76 words
A plenum as defined in claim 1, wherein said upper peripheral frame cross-section additionally has an upwardly open suspension channel disposed above said downwardly-open channel, said suspension channel having means forming flanges at the upper portion of said suspension channel and extending from the opposite sides of said suspension channel toward the center thereof, said plenum further including at least one terminal block received in said suspension channel and slidably confined by said suspension channel flanges.
Claim 4
Dependent Claim
25 words
A plenum as defined in claim 2, additionally including suspension terminal means slidably received in said suspension channel, and retained therein by said flanges thereof.
Claim 5
Dependent Claim
55 words
A plenum as defined in claim 1, wherein said horizontal panel means have adjacent edges provided with offset flange configurations terminating in vertical flange sections set back from said edges, respectively, and additionally including beam means received between said flange sections, and also including fastening means traversing said flange sections and engaging said beam means.
Claim 6
Dependent Claim
18 words
A plenum as defined in claim 4, wherein said beam means are independent of said upper peripheral frame.
Claim 7
Dependent Claim
46 words
A plenum as defined in claim 4, wherein said beam means includes a downwardly-open channel having flanges adjacent the lower extremities thereof, and also including terminal means slidably supported on said latter flanges, and suspension rod means connecting said terminal means to said lower peripheral frame.
Claim 8
Dependent Claim
21 words
A plenum as defined in claim 6, additionally including a filter-supporting grid suspended, at least in part, from said terminal means.
Claim 9
Dependent Claim
29 words
A plenum as defined in claim 7, wherein said beam means is a pair of back-to-back channels, one above the other, the lower of said channels being downwardly open.
Claim 10
Dependent Claim
56 words
A plenum as defined in claim 7, wherein said peripheral frames are constructed from extruded members joined at mitered ends and having coplanar receptacle channels with end openings meeting at said mitered ends, and also including angle members having legs engaging said receptacle channels in a close fit to maintain corner alignment of said extruded members.
Claim 11
Dependent Claim
131 words
A filter plenum, comprising: a plurality of interrelated modules each having: an upper peripheral frame with a cross-section providing a downwardly-open channel defined by spaced inner and outer vertical flanges, and also providing a horizontal inner shelf; a lower peripheral frame with a cross-section providing an upwardly-open first channel defined by spaced vertical inner and outer flanges, and in vertical alignment with said downwardly-open channel, and also providing an upwardly-open sealing channel disposed below said first channel; horizontal panel means received on said shelf; securing means traversing said shelf and engaging said horizontal panels; and closure means surrounding certain sides of said plenum, at least certain of said modules having the space therein freely intercommunicating, said modules having abutting sections of said peripheral frames secured together with gasket means interposed therebetween.
Claim 12
Dependent Claim
131 words
A filter plenum, comprising: a plurality of interrelated modules each having: an upper peripheral frame with a cross-section providing a downwardly-open channel defined by spaced inner and outer vertical flanges, and also providing a horizontal inner shelf; a lower peripheral frame with a cross-section providing an upwardly-open first channel defined by spaced vertical inner and outer flanges, and in vertical alignment with said downwardly-open channel, and also providing an upwardly-open sealing channel disposed below said first channel; horizontal panel means received on said shelf; securing means traversing said shelf and engaging said horizontal panels; and closure means surrounding certain sides of said plenum, at least certain of said modules having the space therein freely intercommunicating, said modules having abutting sections of said peripheral frames secured together with gasket means interposed therebetween.
Claim 13
Dependent Claim
94 words
A modular filter plenum, comprising: an upper peripheral frame; a lower peripheral frame; side panel means secured to said peripheral frames; a plurality of top panels secured to said upper peripheral frame; a filter-supporting grid formed by beams having the axes thereof disposed in intersecting vertical planes, at least one of said beams being in vertical alignment with the junction between certain of said top panels; grid-suspension beam means secured to at lest one of said certain top panels at said junction; and suspension means extending from said suspension beam means to said grid.
Claim 14
Dependent Claim
94 words
A modular filter plenum, comprising: an upper peripheral frame; a lower peripheral frame; side panel means secured to said peripheral frames; a plurality of top panels secured to said upper peripheral frame; a filter-supporting grid formed by beams having the axes thereof disposed in intersecting vertical planes, at least one of said beams being in vertical alignment with the junction between certain of said top panels; grid-suspension beam means secured to at lest one of said certain top panels at said junction; and suspension means extending from said suspension beam means to said grid.
Claim 15
Dependent Claim
49 words
A modular filter plenum as defined in claim 11, wherein said upper and lower frames have vertically-aligned flanges and said side panels are secured thereto, and said upper frame has a horizontal shelf receiving said top panels, said suspension beam means being secured to both of said top panels.
References Cited (Backward Citations)
US3486311A
Cited
US3808777A
Cited
US3835606A
Cited
US4319899A
Cited
US4580381A
Cited
US4549472A
Cited
US4846859A
Cited
US4671811A
Cited
US4560395A
Cited
US4693175A
Cited
US4600419A
Cited
US4815364A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-12-10 | 1994-06-11 | 1994-12-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-12-10 | 1998-06-11 | 1998-12-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-12-10 | 2002-06-11 | 2002-12-11 | $7700.00 | Window Closed / Lapsed |