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US3907033A Expired / Lapsed US ⏱️ 0.0 years remaining

Corrosion resistant laminated pipe

Assignee: Individual
•
Filing: 1973-06-04
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Granted: 1975-09-23
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Expires: 1993-06-04
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Abstract

Abstract A corrosion resistant pipe comprising an elongated outer tube formed of a synthetic resin containing reinforcing fibers, and an inner tube having an outer wall bonded to the inner wall of the outer tube, the inner tube being formed of asbestos-cement. A well having the pipe for a liner in which the pipe can be imperforate or provided with perforations or slots to let water flow therethrough.

Inventors

  • 👤 John A Stuchlik

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-08 21:13
CPC Classifications
E; E21; E21B; E21B43/00; E21B43/02; E21B43/08; E21B43/086; Y; Y10; Y10S; Y10S138/00; Y10S138/02

Claims Analysis

Total Claims: 9
Claim 1
Independent Claim 256 words
A WELL ASSEMBLY COMPRISING: A CORROSIONRESISTANT PIPE COMPRISING A FIRST ELONGATED TUBE FORMED OF SYNTHETIC RESIN CONTAINING FIBERS, SAID FIBERS BEING OF A MATERIAL WHICH IS BONDED WITH SAID RESIN SO AS TO REINFORCE SAID RESIN, SAID RESIN BEING A RESIN LIKE FIBERGLASS RESIN FOR USE WITH FIBERS LIKE FIBERGLASS IN THE SENSE THAT IT CAN BE AT FIRST A LIQUID THAT LATER HARDENS AFTER BEING MIXED WITH A CATALYST, AND A SECOND TUBE FORMED OF A MATERIAL THE MAJOR PORTION OF WHICH IS ASBESTOS CEMENT, SAID SECOND TUBE BEING INSIDE SAID FIRST TUBE, SAID SECOND TUBE HAVING AN OUTER WALL ADJOINING THE INNER WALL OF SAID FIRST TUBE, SAID ADJOINING WALLS BEING BONDED TOGETHER ACROSS THE MAJORITY OF THEIR ADJOINING SURFACE AREAS, THE EARTH SAID PIPE BEING ADAPTED FOR USE IN THE EARTH, THE EARTH HAVING A CERTAIN PORTION ADJACENT TO ITS OUTER SURFACE, SAID CERTAIN EARTH PORTION HAVING A WELL-OPENING EXTENDING DOWNWARDLY INTO IT FROM ITS OUTER SURFACE, A POROUS MATERIAL BORDERING SAID WELL OPENING, SAID PIPE BEING DISPOSED IN SAID WELL-OPENING AND SERVING AS A WELL CASING, SAID PIPE HAVING A PLURALITY OF PERFORATIONS EXTENDING COMPLETELY THROUGH BOTH THE FIRST AND SECOND TUBES THEREOF, WAID SECOND TUBE HAVING WALLS AGERAGING AT LEAST SEVEN TIMES THE THICKNESS OF THE AVERAGE THICKNESS OF THE WALLS OF SAID FIRST TUBE, SAID FIRST TUBE HAVING AN AGERAGE THICKNESS OF AT LEAST ONE THIRTY-SECOND OF AN INCH, SAID SECOND TUBE HAVING AN OUTER SIDE HAVING THE AREA OF A CYLINDER OF A DIAMETER BETWEEN EIGHT AND EIGHTEEN INCHES.
Claim 2
Dependent Claim 256 words
A WELL ASSEMBLY COMPRISING: A CORROSIONRESISTANT PIPE COMPRISING A FIRST ELONGATED TUBE FORMED OF SYNTHETIC RESIN CONTAINING FIBERS, SAID FIBERS BEING OF A MATERIAL WHICH IS BONDED WITH SAID RESIN SO AS TO REINFORCE SAID RESIN, SAID RESIN BEING A RESIN LIKE FIBERGLASS RESIN FOR USE WITH FIBERS LIKE FIBERGLASS IN THE SENSE THAT IT CAN BE AT FIRST A LIQUID THAT LATER HARDENS AFTER BEING MIXED WITH A CATALYST, AND A SECOND TUBE FORMED OF A MATERIAL THE MAJOR PORTION OF WHICH IS ASBESTOS CEMENT, SAID SECOND TUBE BEING INSIDE SAID FIRST TUBE, SAID SECOND TUBE HAVING AN OUTER WALL ADJOINING THE INNER WALL OF SAID FIRST TUBE, SAID ADJOINING WALLS BEING BONDED TOGETHER ACROSS THE MAJORITY OF THEIR ADJOINING SURFACE AREAS, THE EARTH SAID PIPE BEING ADAPTED FOR USE IN THE EARTH, THE EARTH HAVING A CERTAIN PORTION ADJACENT TO ITS OUTER SURFACE, SAID CERTAIN EARTH PORTION HAVING A WELL-OPENING EXTENDING DOWNWARDLY INTO IT FROM ITS OUTER SURFACE, A POROUS MATERIAL BORDERING SAID WELL OPENING, SAID PIPE BEING DISPOSED IN SAID WELL-OPENING AND SERVING AS A WELL CASING, SAID PIPE HAVING A PLURALITY OF PERFORATIONS EXTENDING COMPLETELY THROUGH BOTH THE FIRST AND SECOND TUBES THEREOF, WAID SECOND TUBE HAVING WALLS AGERAGING AT LEAST SEVEN TIMES THE THICKNESS OF THE AVERAGE THICKNESS OF THE WALLS OF SAID FIRST TUBE, SAID FIRST TUBE HAVING AN AGERAGE THICKNESS OF AT LEAST ONE THIRTY-SECOND OF AN INCH, SAID SECOND TUBE HAVING AN OUTER SIDE HAVING THE AREA OF A CYLINDER OF A DIAMETER BETWEEN EIGHT AND EIGHTEEN INCHES.
Claim 3
Dependent Claim 22 words
The well casing of claim 1 in which said resin has a bonding characteristic and forms said bonding together of said tubes.
Claim 4
Dependent Claim 19 words
The well assembly of claim 1 in which the majority of the material of said first tube is fiberglass.
Claim 5
Dependent Claim 36 words
The well assembly of claim 1 in which the majority of the material of said first tube is fiberglass, and in which said resin has a bonding characteristic and forms said bonding together of said tubes.
Claim 6
Dependent Claim 32 words
The well assembly of claim 12 in which said tubes are substantially cylindrical on their inner and outer walls, and said first tube has a maximum thickness of three-thirty-seconds of an inch.
Claim 7
Dependent Claim 24 words
The well assembly of claim 1 in which said first tube has a wall thickness of an average of approximately one-sixteenth of an inch.
Claim 8
Dependent Claim 55 words
The well assembly of claim 1 in which said first tube is formed of fiberglass and has a thickness of approximately one-sixteenth inch, said second tube having an average thickness of approximately one inch, said second tube being cylindrical on its inner and outer walls and being between eight and eighteen inches in outside diameter.
Claim 9
Dependent Claim 33 words
The well assembly of claim 1 in which said first tube is substantially cylindrical on its inner and outer walls and said second tube has an inner wall diameter of approximately 17 inches.

References Cited (Backward Citations)

US173436A Cited
US231832A Cited
US2577205A Cited
US2969840A Cited
US3502145A Cited
US3638726A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1978-09-22 1979-03-24 1979-09-23 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1982-09-22 1983-03-24 1983-09-23 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1986-09-22 1987-03-24 1987-09-23 $7700.00 Window Closed / Lapsed

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