US4519729A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Segmented membrane barrier
Assignee: S L T NORTH AMERICA Inc
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Filing: 1983-05-10
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Granted: 1985-05-28
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Expires: 2003-05-10
Abstract
Abstract A combination connector and supporting member for a segmented membrane barrier is disclosed. A tubular connector is joined to one end of a membrane segment along a continuous seam and a second smaller connector, adapted to fit within the tubular connector, is attached to the opposite end of the membrane segment along a second continuous seam. A projection, extending beyond the edge of the membrane segment is adapted to fit within a key or the like for supporting and locating the connectors in a trench.
Inventors
- 👤 Robert T. Clarke, Jr.
- 👤 Raymond Jasienski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 06:34
CPC Classifications
E; E02; E02D; E02D19/00; E02D19/06; E02D19/12; E02D19/18; E02D19/185
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
109 words
A membrane barrier segment for forming a buried fluid barrier comprising: an elongate sheet of impermeable material having first and second ends; a first one-piece tubular member connected to said first end along a first continuous seam, said first tubular member having a first outside diameter; and a second one-piece tubular member connected to said second end along a second continuous seam, said second tubular member characterized by an inner diameter greater than said first outer diameter, and having a slot in a side wall thereof for passing said continuous membrane through, at least said second tubular member having an end portion projecting beyond an edge of said sheet.
Claim 2
Dependent Claim
109 words
A membrane barrier segment for forming a buried fluid barrier comprising: an elongate sheet of impermeable material having first and second ends; a first one-piece tubular member connected to said first end along a first continuous seam, said first tubular member having a first outside diameter; and a second one-piece tubular member connected to said second end along a second continuous seam, said second tubular member characterized by an inner diameter greater than said first outer diameter, and having a slot in a side wall thereof for passing said continuous membrane through, at least said second tubular member having an end portion projecting beyond an edge of said sheet.
Claim 3
Dependent Claim
16 words
The barrier segment of claim 1 wherein said membrane material comprises a continuous sheet of polyethylene.
Claim 4
Dependent Claim
19 words
The barrier segment of claim 2 wherein said first and second tubular members comprise continuous high density polyethylene pipes.
Claim 5
Dependent Claim
17 words
The membrane barrier segment of claim 1 wherein said first and second continuous seams are welded seams.
Claim 6
Dependent Claim
17 words
The membrane barrier segment of claim 1 wherein said first and second continuous seams are adhesive seams.
Claim 7
Dependent Claim
23 words
The membrane barrier segment of claim 1 wherein said slot and said second continuous seam are separated by an angle less than 180°.
Claim 8
Dependent Claim
21 words
The membrane barrier segment of claim 1 further comprising an internal membrane barrier connected between said first and second tubular members.
Claim 9
Dependent Claim
199 words
A barrier for underground fluid material flow control comprising: a trench in the earth having a length extending across the expected polution path; a segmented membrane barrier in said trench, said barrier comprising a plurality of membrane segments; a first tubular joining member on one end of each of said segments, each of said first joining members comprising a tubular member attached to said segment along a continuous fluid impervious seam; said tubular members characterized by a preselected inside dimension; a second tubular joining member on the other end of each of said segments, each of said second joining members comprising a tubular member attached to said segment along a continuous fluid impervious seam; a slot in a side wall of each of said first tubular joining members adapted to pass said membrane therethrough when said second tubular joining elrments are disposed within said first tubular joining members; at least said first tubular joining member having an end portion projecting beyond said membrane segments; means in said trench for receiving said projecting portion for locating and supporting said second tubular joining member; a fluid impervious sealing material disposed in the space between said first and second tubular joining members.
Claim 10
Dependent Claim
199 words
A barrier for underground fluid material flow control comprising: a trench in the earth having a length extending across the expected polution path; a segmented membrane barrier in said trench, said barrier comprising a plurality of membrane segments; a first tubular joining member on one end of each of said segments, each of said first joining members comprising a tubular member attached to said segment along a continuous fluid impervious seam; said tubular members characterized by a preselected inside dimension; a second tubular joining member on the other end of each of said segments, each of said second joining members comprising a tubular member attached to said segment along a continuous fluid impervious seam; a slot in a side wall of each of said first tubular joining members adapted to pass said membrane therethrough when said second tubular joining elrments are disposed within said first tubular joining members; at least said first tubular joining member having an end portion projecting beyond said membrane segments; means in said trench for receiving said projecting portion for locating and supporting said second tubular joining member; a fluid impervious sealing material disposed in the space between said first and second tubular joining members.
Claim 11
Dependent Claim
15 words
The barrier of claim 8 wherein said membrane material comprises a continuous sheet of polyethylene.
Claim 12
Dependent Claim
18 words
The barrier of claim 8 wherein said first and second tubular members comprise continuous high density polyethylene pipes.
Claim 13
Dependent Claim
15 words
The barrier of claim 8 wherein said first and second continuous seams are welded seams.
Claim 14
Dependent Claim
15 words
The barrier of claim 8 wherein said first and second continuous seams are adhesive seams.
Claim 15
Dependent Claim
21 words
The barrier of claim 8 wherein said slot and said second continuous seam are separated by an angle less than 180°.
Claim 16
Dependent Claim
19 words
The barrier of claim 8 further comprising an internal membrane barrier connected between said first and second tubular members.
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) | 1988-05-27 | 1988-11-26 | 1989-05-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-05-27 | 1992-11-26 | 1993-05-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-05-27 | 1996-11-26 | 1997-05-28 | $7700.00 | Window Closed / Lapsed |