Patent US3772858A successfully refreshed from Google Patents.
US3772858A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fume washer housing
Assignee: Sandoz AG
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Filing: 1971-04-23
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Granted: 1973-11-20
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Expires: 1991-04-23
Abstract
Abstract A fume washer comprises a hollow body formed of synthetic plastic material. The fume washer is initially rotomolded in onepiece which is then cut into first and second structural members. One structural member has an outlet which may be positioned either horizontally or vertically. Demister padding is supported between grids within the hollow body. A water spray wets the demister padding while fumes are blown through the demister padding to remove pollutants from the fumes.
Inventors
- 👤 W Klugman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 06:46
CPC Classifications
B; B01; B01D; B01D47/00; B01D47/06
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
301 words
A housing for a fume washer comprising; a hollow body of synthetic plastic material; said body including a hollow base portion defining a first structural member having a substantially horizontal base bottom wall and an upwardly extending peripheral wall, a substantially horizontal duct extending outwardly from said peripheral wall above said base bottom wall on one side of said base portion, said horizontal duct terminating in an inlet opening having a peripheral edge lying in a substantially vertical first plane, said base portion including an enlarged opening opposite said duct and inlet opening, said enlarged opening having a peripheral edge lying in a second plane extending at substantially 45* to said vertical first plane and to said base bottom wall, said body including a second duct member defining a second structural member having an enlarged opening substantially symmetrical with respect to said enlarged opening on said base portion, said enlarged opening on said second duct member having a peripheral edge lying substantially in said second plane, said peripheral edge of said enlarged opening of said second duct member being rotatable relative to said peripheral edge of said enlarged opening of said base portion about an axis perpendicular to said second plane, said second duct member including an outlet opening having a peripheral edge lying in a third plane extending at substantially 45* with respect to said second plane, and said peripheral edge of said enlarged opening of said second duct member being detachably connected to said peripheral edge of said enlarged opening of said base portion, whereby said second duct member can be selectively positioned relative to said base portion in a first position iN which said third plane is parallel to said first plane and in a second position in which said third plane is perpendicular to said first plane.
Claim 2
Dependent Claim
301 words
A housing for a fume washer comprising; a hollow body of synthetic plastic material; said body including a hollow base portion defining a first structural member having a substantially horizontal base bottom wall and an upwardly extending peripheral wall, a substantially horizontal duct extending outwardly from said peripheral wall above said base bottom wall on one side of said base portion, said horizontal duct terminating in an inlet opening having a peripheral edge lying in a substantially vertical first plane, said base portion including an enlarged opening opposite said duct and inlet opening, said enlarged opening having a peripheral edge lying in a second plane extending at substantially 45* to said vertical first plane and to said base bottom wall, said body including a second duct member defining a second structural member having an enlarged opening substantially symmetrical with respect to said enlarged opening on said base portion, said enlarged opening on said second duct member having a peripheral edge lying substantially in said second plane, said peripheral edge of said enlarged opening of said second duct member being rotatable relative to said peripheral edge of said enlarged opening of said base portion about an axis perpendicular to said second plane, said second duct member including an outlet opening having a peripheral edge lying in a third plane extending at substantially 45* with respect to said second plane, and said peripheral edge of said enlarged opening of said second duct member being detachably connected to said peripheral edge of said enlarged opening of said base portion, whereby said second duct member can be selectively positioned relative to said base portion in a first position iN which said third plane is parallel to said first plane and in a second position in which said third plane is perpendicular to said first plane.
Claim 3
Dependent Claim
37 words
The device of claim 1 wherein said inlet opening has a central axis and said outlet opening has a central axis, said central axes being substantially coincidental when said second duct member is in said first position.
Claim 4
Dependent Claim
26 words
The device of claim 1 wherein said enlarged openings in said first and second structural members are polygonal and said inlet and outlet openings are circular.
Claim 5
Dependent Claim
46 words
The device of claim 1 and further including over-flow and drain openings formed in said peripheral wall of said base portion, said drain opening being positioned adjacent said base bottom wall and said overflow opening being positioned intermediate said horizontal duct and said base bottom wall.
Claim 6
Dependent Claim
88 words
The device of claim 1 comprising grid member having a circular peripheral wall having first and second peripheral edges, flange means extending substantially radially outward from said first peripheral edge, a grid wall extending across said second peripheral edge, said grid wall including a plurality of spaced-apart parallel ribs and a plurality of spaced-apart parallel tie bars extending perpendicular to said ribs and interconnecting said ribs, said ribs having a substantially V-shaped cross-sectional shape and having a height at least five times the height of said tie bars.
Claim 7
Dependent Claim
41 words
The device of claim 1 wherein at least one of the corresponding structural members includes a pocket duct adjacent said enlarged opening, said pocket duct including a peripheral duct wall having a substantially uniform cross-sectional area and shape throughout its length.
Claim 8
Dependent Claim
51 words
The device of claim 6 wherein said pocket duct is formed only in said base portion, said peripheral edge of said enlarged opening on said base portion defining one end edge of said pocket duct, the other end of said pocket duct having a supporting shoulder projecting substantially radially inward therefrom.
Claim 9
Dependent Claim
20 words
The device of claim 6 wherein said pocket is formed in both said base portion and said second duct member.
Claim 10
Dependent Claim
63 words
The device of claim 6 wherein said peripheral pocket duct wall has a midpoint and said enlarged openings have a central axis, said inlet and outlet openings have central axes substantially coincidental with one another and intersecting said central axis of said enlarged opening substantially at said midpoint of said pocket duct wall when said second duct member is in said first position.
Claim 11
Dependent Claim
31 words
The device of claim 1 and further including spaced-apart structural supporting grid means positioned in said body members adjacent said enlarged openings, and demister pad means positioned between said grid means.
Claim 12
Dependent Claim
59 words
The device of claim 10 wherein said peripheral edges of said enlarged openings have flange means extending substantially radially outward therefrom, said grid means including a pair of dished-shaped reversely positioned grid members having outwardly extending flanges contacting one another and being positioned between said flange means extending substantially radially outward from said peripheral edges of said enlarged openings.
Claim 13
Dependent Claim
54 words
The device of claim 11 wherein said supporting grid members comprise a peripheral wall and a grid wall, said grid wall including a plurality of spaced-apart parallel ribs, said ribs being connected by a plurality of spaced-apart parallel tie bars extending substantially perpendicular to said ribs, said ribs projecting outwardly from said grid wall.
Claim 14
Dependent Claim
17 words
The device of claim 12 wherein said grid members are positioned with said ribs extending substantially horizontal.
References Cited (Backward Citations)
US1703440A
Cited
US2163600A
Cited
US3006436A
Cited
US3406498A
Cited
GB1199021A
Cited
US3596440A
Cited
US3693410A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-11-19 | 1977-05-21 | 1977-11-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-11-19 | 1981-05-21 | 1981-11-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-11-19 | 1985-05-21 | 1985-11-20 | $7700.00 | Window Closed / Lapsed |