Patent US4013556A successfully refreshed from Google Patents.
US4013556A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combination flow distribution and collection apparatus
Assignee: Wheelabrator Clean Water Inc
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Filing: 1976-08-19
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Granted: 1977-03-22
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Expires: 1996-08-19
Abstract
Abstract Combination flow distributing and collecting apparatus for collecting and distributing fluids at different flow rates includes at least one cylindrical screen member portion having a cylindrical distribution and collection pipe positioned interiorly thereof. The distribution and collection pipe contains a plurality of openings in its sides, with at least some of the openings serving to permit flow in one radial direction while restricting or preventing flow in the other radial direction while the other openings permit flow in either direction.
Inventors
- 👤 Thomas W. Evans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:11
CPC Classifications
B; B01; B01J; B01J47/00; B01J47/02; B01J47/022; B01D; B01D24/00; B01D24/02; B01D24/10; B01D24/14
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
136 words
An apparatus for distributing fluid flow in one direction at one flow rate and collectng it in another direction at another flow rate comprising pipe means having an opening at one end through which fluid can enter or leave said apparatus and first and second sets of openings in the walls thereof, the first said set of openings permitting flow in either direction through said walls depending on whether the fluid is being distributed or collected, the second said set of openings having valve means associated therewith which are self-closing in one direction of flow and self-opening in the other direction of flow, and perforated screen means concentrically positioned about said pipe means for preventing solid particles in the fluid being collected which are larger than the screen perforations from being drawn into the pipe means.
Claim 2
Independent Claim
136 words
An apparatus for distributing fluid flow in one direction at one flow rate and collectng it in another direction at another flow rate comprising pipe means having an opening at one end through which fluid can enter or leave said apparatus and first and second sets of openings in the walls thereof, the first said set of openings permitting flow in either direction through said walls depending on whether the fluid is being distributed or collected, the second said set of openings having valve means associated therewith which are self-closing in one direction of flow and self-opening in the other direction of flow, and perforated screen means concentrically positioned about said pipe means for preventing solid particles in the fluid being collected which are larger than the screen perforations from being drawn into the pipe means.
Claim 3
Dependent Claim
25 words
The apparatus of claim 1 wherein said pipe means and screen means are attached to a header member at spaced locations along the length thereof.
Claim 4
Dependent Claim
41 words
The apparatus of claim 1 wherein said valve means associated with said second set of openings are attached to said pipe means and include portions which overlie and close off said second set of openings in an outward direction of flow.
Claim 5
Dependent Claim
31 words
The apparatus of claim 3 wherein said valve means each comprise a ball and resilient means to bias the ball into sealing contact with one of said second set of openings.
Claim 6
Dependent Claim
48 words
The apparatus of claim 1 wherein the number of openings in the second set of openings and their size is selected to permit a flow rate through the pipe in their open direction which is at least twice the flow rate through the pipe in their closed direction.
Claim 7
Dependent Claim
49 words
The apparatus of claim 1 wherein the number of openings in the second set of openings and their size is selected to permit a flow rate through the pipe in their open direction which is at least five times the flow rate through the pipe in their closed direction.
Claim 8
Dependent Claim
41 words
The apparatus of claim 1 wherein said valve means associated with said second set of openings are attached to said pipe means and include portions which overlie and close off said second set of openings in an inward direction of flow.
Claim 9
Dependent Claim
12 words
The apparatus of claim 1 wherein said valve means comprise flapper valves.
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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) | 1980-03-21 | 1980-09-20 | 1981-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-03-21 | 1984-09-20 | 1985-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-03-21 | 1988-09-20 | 1989-03-22 | $7700.00 | Window Closed / Lapsed |