US3914843A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of connecting a metal conduit to a plastic conduit
Assignee: United States Department of the Air Force
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Filing: 1974-12-20
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Granted: 1975-10-28
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Expires: 1994-12-20
Abstract
Abstract The basic inventive method includes the steps of: affixing, preferably by welding, a metallic flange to the appropriate end of the metallic conduit; affixing, preferably by bonding with epoxy, a plastic flange to the adjacent, oppositely disposed end of the plastic conduit; interposing a gasket, preferably of the full face type, made of suitable material, such as asbestos, between the metallic and the plastic flanges; and, connecting together, in a releasable manner, such as by use of bolting means, the metallic flange, the gasket, and the plastic flange. The method can be used, and can be adapted to be used, to meet varying requirements for different applications, including for forming an integrated pipe system used underground, in conjunction with a coaxially positioned inner metallic pipe, surrounded by suitable thermal insulating material, which conducts a thermally active fluid, such as steam.
Inventors
- 👤 Donald W Antonacci
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 02:52
CPC Classifications
F; F16; F16L; F16L5/00; F16L5/02; F16L5/08; B; B23; B23P; B23P11/00; F16L23/00; F16L23/12; F16L59/00; F16L59/06; F16L59/14; F16L59/16; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49428; Y10T29/49826; Y10T29/49947; Y10T29/49948; Y10T29/49966
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
654 words
The method of connecting, in a releasable manner, an anchor plate assembly to a first and to a second plastic conduit, wherein the anchor plate assembly has a longitudinal axis, and wherein the anchor plate assembly includes a metallic conduit which has a longitudinal axis which coincides with the anchor plate assembly longitudinal axis and which also has an external surface and which comprises a first segment which has first and second free and open ends and a second segment which has first and second free and open ends, and wherein the anchor plate assembly also includes a metallic anchor plate which has a longitudinal axis which coincides with the anchor plate assembly longitudinal axis and which also has a front and a rear surface, and with the anchor plate disposed between the first and the second segments of the metallic conduit, and with the second end of the first segment affixed to the front surface of the anchor plate, and with the first end of the second segment affixed to the rear surface of the anchor plate, and wherein the first and the second plastic conduits each has a free and open end, and also each has a longitudinal axis, and further each has an external surface, comprising the steps of: a. surrounding the metallic conduit of the anchor plate assembly with concrete, and thereby forming a block having a first recess containing the first end of the first segment of the metallic conduit and also having a second recess containing the second end of the second segment of the metallic conduit; b. affixing a first metallic flange to the first end of the first segment of the metallic conduit, with the first metallic flange being within the first recess of the concrete block; c. affixing a second metallic flange to the second end of the second segment of the metallic conduit, with the second metallic flange being within the second recess of the concrete block; d. affixing a first plastic flange to the free and open end of the first plastic conduit; e. affixing a second plastic flange to the free and open end of the second plastic conduit; f. positioning the first plastic conduit so that the first plastic conduit and the anchor plate assembly, and the metallic conduit thereof, are longitudinally and axially aligned, and also so that the first plastic conduit and the anchor plate assembly are adjacent, and further so that the first plastic flange of the first plastic conduit and the first metallic flange are directionally opposed, with the first plastic flange also being within the first recess of the concrete block; g. positioning the second plastic conduit so that the second plastic conduit and the anchor plate assembly, and the metallic conduit thereof, are longitudinally and axially aligned, and also so that the second plastic conduit and the anchor plate assembly are adjacent, and further so that the second plastic flange of the second plastic conduit and the second metallic flange are directionally opposed, with the second plastic flange also being within the second recess of the concrete block; h. interposing a first gasket of suitable material between, and abutting with, the first plastic flange and the first metallic flange; i. interposing a seconD gasket of suitable material between, and abutting with, the second plastic flange and the second metallic flange; j. connecting together, in a releasable manner, the first plastic flange, the first gasket, and the first metallic flange; k. connecting together, in a releasable manner, the second plastic flange, the second gasket, and the second metallic flange; 1. filling the first recess of the concrete block, within which are the first plastic flange and the first gasket and the first metallic flange, with a mastic; m. and, filling the second recess of the concrete block, within which are the second plastic flange and the second gasket and the second metallic flange, with a mastic.
Claim 2
Independent Claim
654 words
The method of connecting, in a releasable manner, an anchor plate assembly to a first and to a second plastic conduit, wherein the anchor plate assembly has a longitudinal axis, and wherein the anchor plate assembly includes a metallic conduit which has a longitudinal axis which coincides with the anchor plate assembly longitudinal axis and which also has an external surface and which comprises a first segment which has first and second free and open ends and a second segment which has first and second free and open ends, and wherein the anchor plate assembly also includes a metallic anchor plate which has a longitudinal axis which coincides with the anchor plate assembly longitudinal axis and which also has a front and a rear surface, and with the anchor plate disposed between the first and the second segments of the metallic conduit, and with the second end of the first segment affixed to the front surface of the anchor plate, and with the first end of the second segment affixed to the rear surface of the anchor plate, and wherein the first and the second plastic conduits each has a free and open end, and also each has a longitudinal axis, and further each has an external surface, comprising the steps of: a. surrounding the metallic conduit of the anchor plate assembly with concrete, and thereby forming a block having a first recess containing the first end of the first segment of the metallic conduit and also having a second recess containing the second end of the second segment of the metallic conduit; b. affixing a first metallic flange to the first end of the first segment of the metallic conduit, with the first metallic flange being within the first recess of the concrete block; c. affixing a second metallic flange to the second end of the second segment of the metallic conduit, with the second metallic flange being within the second recess of the concrete block; d. affixing a first plastic flange to the free and open end of the first plastic conduit; e. affixing a second plastic flange to the free and open end of the second plastic conduit; f. positioning the first plastic conduit so that the first plastic conduit and the anchor plate assembly, and the metallic conduit thereof, are longitudinally and axially aligned, and also so that the first plastic conduit and the anchor plate assembly are adjacent, and further so that the first plastic flange of the first plastic conduit and the first metallic flange are directionally opposed, with the first plastic flange also being within the first recess of the concrete block; g. positioning the second plastic conduit so that the second plastic conduit and the anchor plate assembly, and the metallic conduit thereof, are longitudinally and axially aligned, and also so that the second plastic conduit and the anchor plate assembly are adjacent, and further so that the second plastic flange of the second plastic conduit and the second metallic flange are directionally opposed, with the second plastic flange also being within the second recess of the concrete block; h. interposing a first gasket of suitable material between, and abutting with, the first plastic flange and the first metallic flange; i. interposing a seconD gasket of suitable material between, and abutting with, the second plastic flange and the second metallic flange; j. connecting together, in a releasable manner, the first plastic flange, the first gasket, and the first metallic flange; k. connecting together, in a releasable manner, the second plastic flange, the second gasket, and the second metallic flange; 1. filling the first recess of the concrete block, within which are the first plastic flange and the first gasket and the first metallic flange, with a mastic; m. and, filling the second recess of the concrete block, within which are the second plastic flange and the second gasket and the second metallic flange, with a mastic.
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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) | 1978-10-27 | 1979-04-28 | 1979-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-10-27 | 1983-04-28 | 1983-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-10-27 | 1987-04-28 | 1987-10-28 | $7700.00 | Window Closed / Lapsed |