US5403474A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Curb inlet gravel sediment filter
Assignee: Individual
•
Filing: 1994-02-24
•
Granted: 1995-04-04
•
Expires: 2014-02-24
Abstract
Abstract A portable curb inlet sediment filter which has a box filter frame and a primary baffle panel defining a filter chamber, to be filled with a particulate filter medium, such as gravel, for sediment removal, and an overflow chamber. The overflow chamber has at least one overflow baffle panel in order to provide a hydraulic opening and a peripheral end cap chamber. The end cap chamber is gravel filled in order to clarify water escaping around the front of the frame and into the hydraulic opening through the side panel. The filter frame and baffle panels are a mesh construction having apertures smaller in size than the particles of gravel to be contained.
Inventors
- 👤 Grant R. Emery
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:43
CPC Classifications
E; E03; E03F; E03F5/00; E03F5/04; E03F5/0401; E03F5/0404; E03F1/00; E03F5/046
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
100 words
In a storm water drainage basin system comprising a below ground receiving basin and a recessed curb inlet for receiving water, the improvement consisting of a portable sediment filter disposed adjacent to, and external of, said curb inlet, said filter comprising a mesh box filter frame having a rectangular bottom panel, a rectangular front panel, and two side panels, wherein a mesh primary baffle divides the filter frame into a filter chamber containing a particulate filter medium and an overflow chamber, said overflow chamber being divided into a hydraulic opening and an end cap chamber by a mesh overflow baffle.
Claim 2
Dependent Claim
100 words
In a storm water drainage basin system comprising a below ground receiving basin and a recessed curb inlet for receiving water, the improvement consisting of a portable sediment filter disposed adjacent to, and external of, said curb inlet, said filter comprising a mesh box filter frame having a rectangular bottom panel, a rectangular front panel, and two side panels, wherein a mesh primary baffle divides the filter frame into a filter chamber containing a particulate filter medium and an overflow chamber, said overflow chamber being divided into a hydraulic opening and an end cap chamber by a mesh overflow baffle.
Claim 3
Dependent Claim
31 words
The system as recited in claim 1 wherein the side panels and the overflow baffle panel are each at an acute angle at the lower ends thereof to the back panel.
Claim 4
Dependent Claim
29 words
The system as recited in claim 1 wherein the side panels and the overflow baffle panel are each substantially perpendicular at the lower ends thereof to the back panel.
Claim 5
Dependent Claim
13 words
The system as recited in claim 1 wherein the filter means is gravel.
Claim 6
Dependent Claim
23 words
The system according to claim 1 wherein the frame, and the primary and the overflow baffle panels are constructed of injection molded plastic.
Claim 7
Dependent Claim
34 words
The system as recited in claim 5 wherein the filter frame is made of one work piece and the primary baffle panel and the overflow baffle panel are made of a second work piece.
Claim 8
Dependent Claim
36 words
The filter as recited in claim 5 wherein the side panels each have an upper aperture whereby a handle is formed between the upper edge of the side panels and the upper periphery of the aperture.
Claim 9
Dependent Claim
20 words
The system as recited in claim 7 wherein the side panels are each provided with a pair of circular openings.
Claim 10
Dependent Claim
34 words
The system as recited in claim 8 wherein the side panels are each provided with a first transverse support member above the circular openings and a second transverse support member below the circular openings.
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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) | 1998-04-03 | 1998-10-03 | 1999-04-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-04-03 | 2002-10-03 | 2003-04-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-04-03 | 2006-10-03 | 2007-04-04 | $7700.00 | Window Closed / Lapsed |