US3622006A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self-cleaning strainer for pipeline
Assignee: Individual
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Filing: 1969-10-20
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Granted: 1971-11-23
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Expires: 1989-10-20
Abstract
Abstract A self-cleaning strainer for a relatively large pipeline has a conical straining element longitudinally mounted in a casing in line with the flow through the pipeline. The straining element is slowly rotated past an adjacent collecting trough to wash debris into it. The straining element can be rotated by various drive means, from either its front or back end, which may utilize a motor, a transmission (such as chain and sprocket or gears) or a propeller rotated by the flow of water through the casing. The propeller may be connected to the straining element through a transmission which allows it to rotate relatively fast while the filter element rotates at a relatively slower speed.
Inventors
- 👤 Marc M Brunner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 02:47
CPC Classifications
B; B01; B01D; B01D35/00; B01D35/02; B01D35/14; B01D2201/00; B01D2201/02
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
143 words
A self-cleaning strainer for a pipeline comprising a cylindrical casing having a longitudinal axis, coupling means on said casing for connecting it to said pipeline with said longitudinal axis aligned with the direction of flow through said pipeline, a conical foraminous straining element disposed within said casing and having an axial shaft, rotatable support means mounting said straining element and its axial shaft within said casing for rotation upon said longitudinal axis, drive means connected to said straining element for causing it to rotate slowly about said longitudinal axis, an elongated collected trough disposed within said casing and having an elongated mouth, said elongated mouth being disposed closely adjacent the outer surface of said straining element whereby debris collected on said outer surface of said straining element is removed into said trough, and drain means from said trough for removing said debris therefrom.
Claim 2
Dependent Claim
143 words
A self-cleaning strainer for a pipeline comprising a cylindrical casing having a longitudinal axis, coupling means on said casing for connecting it to said pipeline with said longitudinal axis aligned with the direction of flow through said pipeline, a conical foraminous straining element disposed within said casing and having an axial shaft, rotatable support means mounting said straining element and its axial shaft within said casing for rotation upon said longitudinal axis, drive means connected to said straining element for causing it to rotate slowly about said longitudinal axis, an elongated collected trough disposed within said casing and having an elongated mouth, said elongated mouth being disposed closely adjacent the outer surface of said straining element whereby debris collected on said outer surface of said straining element is removed into said trough, and drain means from said trough for removing said debris therefrom.
Claim 3
Dependent Claim
28 words
A strainer as set forth in claim 1 wherein said drive means comprises electric motor means and transmission means connecting said electric motor means to said straining element.
Claim 4
Dependent Claim
38 words
A strainer as set forth in claim 2 wherein said electrical motor means is mounted outside of said casing and said transmission means extends from said electric motor means through said casing into connection with said straining element.
Claim 5
Dependent Claim
17 words
A strainer as set forth in claim 3 wherein said transmission means comprises chain and sprocket means.
Claim 6
Dependent Claim
51 words
A strainer as set forth in claim 1 wherein said straining element has a downstream end which is smaller than its upstream end, a portion of said axial shaft extending from the front end of said straining element and said drive means being connected to said extended portion of said shaft.
Claim 7
Dependent Claim
51 words
A strainer as set forth in claim 1 wherein said straining element has a downstream end which is smaller than its upstream end, a portion of said axial shaft extending from the back end of said straining element, and said drive means being connected to said extended portion of said shaft.
Claim 8
Dependent Claim
46 words
A strainer as set forth in claim 1 wherein said drive means comprises an annular toothed wheel disposed about the larger end of said straining element, toothed pinion wheel in engagement with said annular toothed wheel, and a motor connected to rotate said toothed pinion wheel.
Claim 9
Dependent Claim
58 words
A strainer as set forth in claim 1 wherein said drive means comprises axial flow propeller means disposed within said casing, free rotating means mounting said propeller means within said casing, and connecting means between said propeller means and said straining element whereby said straining element is rotated in response to the flow of fluid through said casing.
Claim 10
Dependent Claim
33 words
A strainer as set forth in claim 8 wherein said connecting means comprises a geared transmission whereby relatively faster rotation of said propeller means turns said straining element at a relatively slower speed.
Claim 11
Dependent Claim
17 words
A strainer as set forth in claim 9 wherein said geared transmission comprises a compound gear train.
Claim 12
Dependent Claim
42 words
A strainer as set forth in claim 1 wherein said straining element has a smaller downstream and larger upstream ends, and sealing means between said larger upstream end and said casing whereby flow through said casing is confined through said straining element.
Claim 13
Dependent Claim
33 words
A strainer as set forth in claim 1 wherein positive flush means is mounted within said straining element opposite said mouth of said trough whereby positive cleaning of said straining element is accomplished.
Claim 14
Dependent Claim
23 words
A strainer as set forth in claim 1 wherein said trough is substantially vertically mounted to avoid collection of debris upon its sides.
Claim 15
Dependent Claim
48 words
A strainer as set forth in claim 1 wherein said straining element has an apex and a base, said apex being disposed upstream of said base, and said drive means being disposed downstream of said base whereby it is protected from impingement of debris by said straining element.
Claim 16
Dependent Claim
39 words
A strainer as set forth in claim 1 wherein said elongated mouth is adjustably connected to said elongated collecting trough whereby the position of said elongated mouth relative to said outer surface of said straining element may be varied.
Claim 17
Dependent Claim
20 words
A strainer as set forth in claim 1 wherein said elongated mouth comprises separate sections longitudinally aligned with each other.
Claim 18
Dependent Claim
55 words
A strainer as set forth in claim 16 wherein said separate sections each comprise an angular section having a pair of legs, one of said pair of legs being disposed closely adjacent said outer surface of said straining element and the other of said pair of legs being adjustably connected to said elongated collecting trough.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-11-22 | 1975-05-24 | 1975-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-22 | 1979-05-24 | 1979-11-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-22 | 1983-05-24 | 1983-11-23 | $7700.00 | Window Closed / Lapsed |