Patent US5779534A successfully refreshed from Google Patents.
US5779534A
Expired / Lapsed
US
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Multiple stage airflow diffuser apparatus for paint booth
Assignee: Ford Global Technologies LLC
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Filing: 1997-01-21
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Granted: 1998-07-14
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Expires: 2017-01-21
Abstract
Abstract A multiple stage airflow diffuser apparatus for spreading the airflow to provide a uniform airflow in a plenum. The diffuser includes a plurality of diffuser stages positioned in a spaced, nested relationship.
Inventors
- 👤 Richard J. Kunec
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 22:19
CPC Classifications
B; B05; B05B; B05B16/00; B05B16/60
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
58 words
An airflow diffuser apparatus comprising: a plenum having an air inlet; an air supply connected to said plenum and supplying air to said plenum through said air inlet in said plenum; and a diffuser receiving air from said air supply through said air inlet, said diffuser including a plurality of diffuser stages arranged in a spaced, nested relationship.
Claim 2
Dependent Claim
58 words
An airflow diffuser apparatus comprising: a plenum having an air inlet; an air supply connected to said plenum and supplying air to said plenum through said air inlet in said plenum; and a diffuser receiving air from said air supply through said air inlet, said diffuser including a plurality of diffuser stages arranged in a spaced, nested relationship.
Claim 3
Dependent Claim
21 words
An airflow diffuser apparatus as set forth in claim 1 wherein said diffuser stages includes first, second and third diffuser boxes.
Claim 4
Dependent Claim
24 words
An airflow diffuser apparatus as set forth in claim 2 wherein said first, second and third diffuser boxes are formed of a perforated plate.
Claim 5
Dependent Claim
122 words
An airflow diffuser apparatus for use with a paint booth for painting automotive vehicles comprising: an air supply; an upper plenum including an inlet, said upper plenum receiving air from said air supply through said inlet; a lower plenum adjacent and communicating through a plurality of openings with said upper plenum, said air flowing from said upper plenum through said openings to said lower plenum; and a diffuser positioned within said upper plenum, said diffuser positioned adjacent said inlet and spreading the airflow entering said upper plenum through said inlet into said upper plenum in a manner providing a uniform flow through said openings to said lower plenum, said diffuser including a plurality of diffuser boxes arranged in a spaced, nested relationship.
Claim 6
Dependent Claim
122 words
An airflow diffuser apparatus for use with a paint booth for painting automotive vehicles comprising: an air supply; an upper plenum including an inlet, said upper plenum receiving air from said air supply through said inlet; a lower plenum adjacent and communicating through a plurality of openings with said upper plenum, said air flowing from said upper plenum through said openings to said lower plenum; and a diffuser positioned within said upper plenum, said diffuser positioned adjacent said inlet and spreading the airflow entering said upper plenum through said inlet into said upper plenum in a manner providing a uniform flow through said openings to said lower plenum, said diffuser including a plurality of diffuser boxes arranged in a spaced, nested relationship.
Claim 7
Dependent Claim
23 words
An airflow diffuser apparatus as set forth in claim 4 wherein said plurality of diffuser boxes includes first, second and third diffuser boxes.
Claim 8
Dependent Claim
24 words
An airflow diffuser apparatus as set forth in claim 5 wherein said first, second and third diffuser boxes are formed of a perforated plate.
Claim 9
Dependent Claim
52 words
An airflow diffuser apparatus as set forth in claim 4 wherein each of said diffuser boxes is formed having opposite side plates interconnected with opposite end plates, and a lower plate interconnected to said side and end plates, said side plates, said end plates and said lower plate each having perforations therein.
Claim 10
Dependent Claim
22 words
An airflow diffuser apparatus as set forth in claim 6 wherein ten to fifty percent of said perforated plate is void space.
Claim 11
Dependent Claim
37 words
An airflow diffuser apparatus as set forth in claim 6 wherein the area of void space in said perforated plate is variable depending upon the position of the diffuser within the plenum and the desired airflow rate.
Claim 12
Dependent Claim
95 words
An airflow diffuser apparatus for evenly spreading flow from an air supply into a plenum comprising: a plurality of diffuser boxes arranged in a spaced, nested relationship, each of said diffuser boxes having opposite side plates interconnected with opposite end plates and a lower plate connected to the side and end plates, said side and lower plates having perforations therein whereby each diffuser box creates a resistance to the airflow from the air supply which tends to spread the airflow wherein said perforations cover ten to fifty percent of said side, end and lower plates.
Claim 13
Dependent Claim
95 words
An airflow diffuser apparatus for evenly spreading flow from an air supply into a plenum comprising: a plurality of diffuser boxes arranged in a spaced, nested relationship, each of said diffuser boxes having opposite side plates interconnected with opposite end plates and a lower plate connected to the side and end plates, said side and lower plates having perforations therein whereby each diffuser box creates a resistance to the airflow from the air supply which tends to spread the airflow wherein said perforations cover ten to fifty percent of said side, end and lower plates.
Claim 14
Dependent Claim
23 words
An airflow diffuser apparatus as set forth in claim 10 wherein said plurality of diffuser boxes includes first, second and third diffuser boxes.
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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) | 2001-07-13 | 2002-01-12 | 2002-07-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-07-13 | 2006-01-12 | 2006-07-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-07-13 | 2010-01-12 | 2010-07-14 | $7700.00 | Window Closed / Lapsed |