US4498913A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for filtering air for a powder spray booth
Assignee: Nordson Corp
•
Filing: 1983-10-06
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Granted: 1985-02-12
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Expires: 2003-10-06
Abstract
Abstract Apparatus for filtering air for a powder spray booth. A fan plenum is fixed in an elevated position and has a lower edge lying in an inclined plane. The filter module has an upper edge lying in an inclined plane and has an elastomeric compressible gasket around its edge. The filter module is mounted on wheels so that it can be rolled into edge-to-edge engagement with the plenum and clamped in that position.
Inventors
- 👤 Gene F. Tank
- 👤 Samuel O. Dawson
- 👤 Phillip R. Barnett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:37
CPC Classifications
B; B05; B05B; B05B14/00; B05B14/40; B05B14/43; Y; Y10; Y10S; Y10S118/00; Y10S118/07; Y10S55/00; Y10S55/46
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
91 words
Apparatus for filtering air for a powder spray booth comprising, a fan plenum, vertical supports mounted on each side of said fan plenum to support said plenum above a floor, said plenum having a lower edge which lies in a plane inclined at an angle to a horizontal plane, a filter module, wheels mounted on said filter module to support it on the floor, said filter module having an upper edge lying in said inclined plane, said edges being engageable when said filter module is rolled into position under said plenum.
Claim 2
Dependent Claim
91 words
Apparatus for filtering air for a powder spray booth comprising, a fan plenum, vertical supports mounted on each side of said fan plenum to support said plenum above a floor, said plenum having a lower edge which lies in a plane inclined at an angle to a horizontal plane, a filter module, wheels mounted on said filter module to support it on the floor, said filter module having an upper edge lying in said inclined plane, said edges being engageable when said filter module is rolled into position under said plenum.
Claim 3
Dependent Claim
37 words
Apparatus as in claim 1, further comprising, a compressible gasket mounted between the edges of said plenum and module, respectively, and means for clamping said filter module against said plenum with said gasket compressed between respective edges.
References Cited (Backward Citations)
GB1315671A
Cited
US3719030A
Cited
US3849092A
Cited
US3944404A
Cited
FR2369878A1
Cited
US4378728A
Cited
DE2835474A1
Cited
US4277260A
Cited
US4401445A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-02-12 | 1988-08-13 | 1989-02-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-02-12 | 1992-08-13 | 1993-02-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-02-12 | 1996-08-13 | 1997-02-12 | $7700.00 | Window Closed / Lapsed |