US6705049B2
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rain and storm water filtration systems
Assignee: ESMOND STEVE E
•
Filing: 2002-03-08
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Granted: 2004-03-16
•
Expires: 2022-03-08
Abstract
Abstract A debris-filtering downspout and other water runoff conduits and receptacles are disclosed, and include a Coanda screen mounted within a conduit, a culvert, a storm water conveyance or secured to a water collection basin. The Coanda screen provides high water throughput and is self-cleaning while effectively filtering debris contained in an incoming water stream.
Inventors
- 👤 Steven E. Esmond
- 👤 Larry Quinn
- 👤 Robert K. Weir
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 19:02
CPC Classifications
E; E04; E04D; E04D13/00; E04D13/04; E04D13/08; E04D2013/086
Claims Analysis
Total Claims: 32
Claim 1
Independent Claim
24 words
A debris-filtering downspout, comprising: a downspout having a downspout opening; and a Coanda screen mounted within the downspout and accessible through the downspout opening.
Claim 2
Dependent Claim
24 words
A debris-filtering downspout, comprising: a downspout having a downspout opening; and a Coanda screen mounted within the downspout and accessible through the downspout opening.
Claim 3
Dependent Claim
25 words
A debris-filtering downspout as recited in claim 1 , wherein the Coanda screen is mounted at an angle of about 15 to 50° from vertical.
Claim 4
Dependent Claim
25 words
A debris-filtering downspout as recited in claim 1 , wherein the Coanda screen is mounted at an angle of about 20 to 45° from vertical.
Claim 5
Dependent Claim
17 words
A debris-filtering downspout as recited in claim 1 , wherein the Coanda screen has a flat profile.
Claim 6
Dependent Claim
17 words
A debris-filtering downspout as recited in claim 1 , wherein the Coanda screen has a concave profile.
Claim 7
Dependent Claim
26 words
A debris-filtering downspout as recited in claim 5 , wherein the Coanda screen has a radius of concavity, R, of from about 6 inches to infinity.
Claim 8
Dependent Claim
41 words
A debris-filtering downspout as recited in claim 1 , wherein the Coanda screen is formed of a plurality of wedge-shaped wires, separated by a gap spacing of about 0.1 to 1.0 mm, with a tilt angle of about 30 to 15°.
Claim 9
Dependent Claim
20 words
A debris-filtering downspout as recited in claim 1 , wherein the downspout has a rectangular cross-section defined by four walls.
Claim 10
Dependent Claim
19 words
A debris-filtering downspout as recited in claim 8 , wherein the Coanda screen makes contact with all four walls.
Claim 11
Dependent Claim
16 words
A debris-filtering downspout as recited in claim 1 , wherein the downspout has a circular cross-section.
Claim 12
Dependent Claim
23 words
A debris-filtering downspout as recited in claim 1 , further comprising a debris retaining basket mounted outside of and below the downspout opening.
Claim 13
Dependent Claim
18 words
A debris-filtering downspout as recited in claim 11 , wherein the debris retaining basket is made of mesh.
Claim 14
Dependent Claim
18 words
A debris-filtering downspout as recited in claim 12 , wherein the mesh is made of a weather-resistant material.
Claim 15
Dependent Claim
29 words
A debris-filtering downspout as recited in claim 1 , further comprising at least one baffle mounted within the downspout and oriented to direct water flow toward the Coanda screen.
Claim 16
Dependent Claim
26 words
A debris-filtering downspout as recited in claim 1 , wherein the downspout opening is located intermediate an upstream end and a downstream end of the downspout.
Claim 17
Independent Claim
40 words
An apparatus for upgrading a downspout, comprising: a downspout section attachable to a portion of an existing downspout, the downspout section having a downspout opening; and a Coanda screen mounted in the downspout section and accessible through the downspout opening.
Claim 18
Independent Claim
40 words
An apparatus for upgrading a downspout, comprising: a downspout section attachable to a portion of an existing downspout, the downspout section having a downspout opening; and a Coanda screen mounted in the downspout section and accessible through the downspout opening.
Claim 19
Dependent Claim
24 words
An apparatus as recited in claim 16 , wherein the Coanda screen is mounted at an angle of about 15 to 50° from vertical.
Claim 20
Dependent Claim
24 words
An apparatus as recited in claim 16 , wherein the Coanda screen is mounted at an angle of about 20 to 45° from vertical.
Claim 21
Dependent Claim
16 words
An apparatus as recited in claim 16 , wherein, the Coanda screen has a flat profile.
Claim 22
Dependent Claim
16 words
An apparatus as recited in claim 16 , wherein the Coanda screen has a concave profile.
Claim 23
Dependent Claim
40 words
An apparatus as recited in claim 16 , wherein the Coanda screen is formed of a plurality of wedge-shaped wires, separated by a gap spacing of about 0.1 to 1.0 mm, with a tilt angle of about 3° to 15°.
Claim 24
Dependent Claim
20 words
An apparatus as recited in claim 16 , wherein the downspout section has a rectangular cross-section defined by four walls.
Claim 25
Dependent Claim
18 words
An apparatus as recited in claim 22 , wherein the Coanda screen makes contact with all four walls.
Claim 26
Dependent Claim
15 words
An apparatus as recited in claim 16 , wherein the downspout has a circular cross-section.
Claim 27
Dependent Claim
22 words
An apparatus as recited in claim 16 , further comprising a debris retaining basket mounted outside of and below the downspout opening.
Claim 28
Dependent Claim
17 words
An apparatus as recited in claim 25 , wherein the debris retaining basket is made of mesh.
Claim 29
Dependent Claim
17 words
An apparatus as recited in claim 26 , wherein the mesh is made of a weather-resistant material.
Claim 30
Dependent Claim
28 words
An apparatus as recited in claim 16 , further comprising at least one baffle mounted within the downspout and oriented to direct water flow toward the Coanda screen.
Claim 31
Independent Claim
51 words
A method for upgrading a downspout to filter debris, comprising: preparing a first upper downspout section for attaching with an upgraded downspout section; and attaching the upgraded downspout section having a Coanda screen mounted therein and accessible through an opening in said upgraded downspout section with the first upper downspout section.
Claim 32
Independent Claim
51 words
A method for upgrading a downspout to filter debris, comprising: preparing a first upper downspout section for attaching with an upgraded downspout section; and attaching the upgraded downspout section having a Coanda screen mounted therein and accessible through an opening in said upgraded downspout section with the first upper downspout section.
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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) | 2007-03-16 | 2007-09-15 | 2008-03-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2011-03-16 | 2011-09-15 | 2012-03-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2015-03-16 | 2015-09-15 | 2016-03-16 | $7700.00 | Window Closed / Lapsed |