US5009715A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for preventing deterioration of concrete pipe
Assignee: Individual
•
Filing: 1989-11-20
•
Granted: 1991-04-23
•
Expires: 2009-11-20
Abstract
Abstract A method and apparatus for cleansing the upper interior surfaces of a concrete sewer conduit, the apparatus including the concrete sewer pipe and a plurality of spray nozzles spaced apart and adapted to be introduced into and disposed in and along a length of concrete sewer to enable continuous or intermittent spraying of the upper interior surface or, alternatively, to be permanently mounted along the length of the concrete sewer conduit when newly constructed.
Inventors
- 👤 R. E. Wilson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 14:57
CPC Classifications
B; B08; B08B; B08B9/00; B08B9/02; B08B9/027; B08B9/032; E; E03; E03F; E03F9/00; B08B2209/00; B08B2209/02; B08B2209/027; B08B2209/04; B08B2209/045; B08B2230/00; B08B2230/01
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
189 words
A method of cleansing away concrete deteriorating acid from interior wall surfaces of concrete sewer conduit, in a sewerage system, normally unwashed by a flow of sewerage therethrough, comprising: introducing a plurality of spray-forming nozzle means into and spaced-apart along said concrete sewer conduit; orienting said nozzle means within said sewer conduit such that spray formed by cleansing fluid passing from said nozzle means will contact and wash said normally unwashed interior wall surfaces of said concrete conduit; connecting said nozzle means via tubular means to a pressurized source of cleansing fluid; and thereby causing said cleansing fluid to flow to said nozzle means; leaving said nozzle means within said concrete sewer conduit a sufficient period of time to enable a spraying operation of cleansing fluid from said nozzles, which can be a continuous operation, during the course of utilization of said concrete sewer conduit in the sewerage system; whereby a spray of said cleansing fluid formed by said nozzle means will wash from said interior wall surfaces concrete deteriorating acid introduced by any means including acid forming bacteria thereby prolonging the useful life of said concrete sewer conduit.
Claim 2
Independent Claim
189 words
A method of cleansing away concrete deteriorating acid from interior wall surfaces of concrete sewer conduit, in a sewerage system, normally unwashed by a flow of sewerage therethrough, comprising: introducing a plurality of spray-forming nozzle means into and spaced-apart along said concrete sewer conduit; orienting said nozzle means within said sewer conduit such that spray formed by cleansing fluid passing from said nozzle means will contact and wash said normally unwashed interior wall surfaces of said concrete conduit; connecting said nozzle means via tubular means to a pressurized source of cleansing fluid; and thereby causing said cleansing fluid to flow to said nozzle means; leaving said nozzle means within said concrete sewer conduit a sufficient period of time to enable a spraying operation of cleansing fluid from said nozzles, which can be a continuous operation, during the course of utilization of said concrete sewer conduit in the sewerage system; whereby a spray of said cleansing fluid formed by said nozzle means will wash from said interior wall surfaces concrete deteriorating acid introduced by any means including acid forming bacteria thereby prolonging the useful life of said concrete sewer conduit.
Claim 3
Dependent Claim
29 words
The method of claim 1, wherein said step of introducing said nozzle means into said conduit comprises supporting said nozzle means above the flow of sewerage in said conduit.
Claim 4
Dependent Claim
30 words
The method of claim 2, wherein said supporting step comprises securing said nozzle means to said sewer conduit in close proximity to an uppermost region of said interior wall surfaces.
Claim 5
Dependent Claim
30 words
The method of claim 1, wherein said introducing step comprises securing said nozzle means to said sewer conduit in close proximity to an uppermost region of said interior wall surfaces.
Claim 6
Dependent Claim
45 words
The method of claim 1, wherein said introducing step comprises providing said nozzle means and said tubular means with a flotation jacket and disposing said jacketed tubular means on the surface of said flow of sewerage with the nozzle means above the flow of sewerage.
Claim 7
Dependent Claim
51 words
The method of claim 1, wherein said step of introducing comprises for each nozzle means: cutting an aperture in an upper region of said concrete sewer conduit, passing a forward portion of said nozzle means downwardly through said aperture, and securing a rearward portion of said nozzle means within said aperture.
Claim 8
Dependent Claim
29 words
The method of claim 1, wherein said step of causing said cleansing fluid to flow to said nozzle means comprises interrupting the flow of said fluid for predetermined intervals.
Claim 9
Independent Claim
71 words
A method of cleansing interior wall surfaces of concrete sewer conduit normally unwashed by the flow of sewerage therethrough while said sewer conduit is in use in a sewerage system, comprising: introducing a cleansing fluid into said sewer conduit; and applying said introduced cleansing fluid to said normally unwashed interior wall surfaces during the course of utilization of said concrete conduit in a sewerage system, which if desired can be continuous.
Claim 10
Independent Claim
71 words
A method of cleansing interior wall surfaces of concrete sewer conduit normally unwashed by the flow of sewerage therethrough while said sewer conduit is in use in a sewerage system, comprising: introducing a cleansing fluid into said sewer conduit; and applying said introduced cleansing fluid to said normally unwashed interior wall surfaces during the course of utilization of said concrete conduit in a sewerage system, which if desired can be continuous.
Claim 11
Dependent Claim
20 words
The method of claim 8, wherein said step of applying comprises flushing said interior wall surfaces with said cleansing fluid.
Claim 12
Dependent Claim
33 words
The method of claim 9, wherein said step of flushing said interior wall surfaces comprises periodically bathing said wall surfaces with said cleansing fluid during the course of utilization of said sewerage system.
Claim 13
Dependent Claim
19 words
The method of claim 8, wherein said step of introducing said cleansing fluid comprises first pressurizing said cleansing fluid.
Claim 14
Dependent Claim
19 words
The method of claim 9, wherein said step of introducing said cleansing fluid comprises first pressurizing said cleansing fluid.
Claim 15
Dependent Claim
19 words
The method of claim 8, wherein said step of introducing said cleansing fluid comprises first heating said cleansing fluid.
Claim 16
Dependent Claim
19 words
The method of claim 9, wherein said step of introducing said cleansing fluid comprises first heating said cleansing fluid.
Claim 17
Dependent Claim
24 words
The method of claim 9, wherein said step of flushing comprises spraying said cleansing fluid onto said normally unwashed concrete sewer conduit wall surfaces.
Claim 18
Dependent Claim
41 words
The method of claim 8, wherein said step of introducing said cleansing fluid comprising inserting a plurality of nozzle means into and at spaced-apart intervals along said sewer conduit and coupling said nozzle means with a source of said cleansing fluid.
Claim 19
Dependent Claim
33 words
The method of claim 16, wherein said step of introducing said cleansing fluid further comprises supporting said plurality of nozzle means above the surface of the flow of sewerage in said sewer conduit.
Claim 20
Dependent Claim
30 words
The method of claim 17, wherein said step of supporting comprises suspending said plurality of nozzle means from the interior wall surfaces above said surface of the flow of sewerage.
Claim 21
Dependent Claim
35 words
The method of claim 17, wherein said step of supporting comprises encasing said nozzle means in a floatable jacket adapted to float on the surface of with said nozzle means above said flow of sewerage.
Claim 22
Independent Claim
205 words
A method of cleansing away concrete deteriorating acid from interior wall surfaces of concrete sewer conduit in a sewerage system normally unwashed by a flow of sewerage therethrough, comprising: introducing tubular means, with a plurality of spray-forming nozzle means spaced-apart therealong, into said concrete sewer conduit for conveying cleansing fluid into said sewerage system; orienting said nozzle means within said conduit such that spray formed by cleansing fluid passing from said tubular means through said nozzle means will contact and wash said normally unwashed interior wall surfaces of said concrete conduit; connecting said tubular means to a pressurized source of cleansing fluid, and thereby causing said cleansing fluid to flow to and from said nozzle means; leaving said tubular means, with said nozzle means, within said concrete sewer conduit a sufficient period of time to enable a spraying operation of cleansing fluid from said nozzles, which can be a continuous operation, during the course of utilization of said concrete sewer conduit in the sewerage system; whereby a spray of said cleansing fluid formed by said nozzle means will wash from said interior wall surfaces concrete deteriorating acid introduced by any means including acid forming bacteria thereby prolonging the useful life of said concrete sewer conduit.
Claim 23
Independent Claim
205 words
A method of cleansing away concrete deteriorating acid from interior wall surfaces of concrete sewer conduit in a sewerage system normally unwashed by a flow of sewerage therethrough, comprising: introducing tubular means, with a plurality of spray-forming nozzle means spaced-apart therealong, into said concrete sewer conduit for conveying cleansing fluid into said sewerage system; orienting said nozzle means within said conduit such that spray formed by cleansing fluid passing from said tubular means through said nozzle means will contact and wash said normally unwashed interior wall surfaces of said concrete conduit; connecting said tubular means to a pressurized source of cleansing fluid, and thereby causing said cleansing fluid to flow to and from said nozzle means; leaving said tubular means, with said nozzle means, within said concrete sewer conduit a sufficient period of time to enable a spraying operation of cleansing fluid from said nozzles, which can be a continuous operation, during the course of utilization of said concrete sewer conduit in the sewerage system; whereby a spray of said cleansing fluid formed by said nozzle means will wash from said interior wall surfaces concrete deteriorating acid introduced by any means including acid forming bacteria thereby prolonging the useful life of said concrete sewer conduit.
Claim 24
Dependent Claim
38 words
The method of claim 20, wherein said step of introducing said tubular means with said nozzle means into said conduit comprises supporting said tubular means with said nozzle means located above the flow of sewerage in said conduit.
Claim 25
Dependent Claim
36 words
The method of claim 21, wherein said supporting step comprises securing said tubular means with said nozzle means to said sewer conduit in close proximity to an uppermost region of said interior concrete conduit wall surfaces.
Claim 26
Dependent Claim
33 words
The method of claim 20, wherein said introducing step comprises securing said nozzle means to said sewer conduit in close proximity to an upper most region of said concrete conduit interior wall surfaces.
References Cited (Backward Citations)
US3535161A
Cited
US4508577A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-04-22 | 1994-10-22 | 1995-04-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-04-22 | 1998-10-22 | 1999-04-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-04-22 | 2002-10-22 | 2003-04-23 | $7700.00 | Window Closed / Lapsed |