Patent US3722225A successfully refreshed from Google Patents.
US3722225A
Expired / Lapsed
US
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Pipeline suspension system
Assignee: Individual
•
Filing: 1970-11-02
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Granted: 1973-03-27
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Expires: 1990-11-02
Abstract
Abstract The pipe is suspended in spaced relation within a ground trench by a chain sling connected to a cross beam by a shock absorber. The pipe and such suspension are fully enclosed by plastic foam formed in place or applied as a wrapping.
Inventors
- 👤 H Empson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 13:27
CPC Classifications
F; F16; F16L; F16L59/00; F16L59/14; F16L59/15
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
83 words
A system for suspending a pipeline in a trench, the pipe being spaced from the trench sides and bottom, comprising flexible load-bearing sling means through which the pipe is inserted for supporting the same, anchor means supported by the walls of the trench securing the sling means to the wall and supporting the pipe freely within the latter, and foamed plastic fully surrounding the pipe and partially surrounding at least a portion of the sling means and a portion of the anchor means.
Claim 2
Independent Claim
83 words
A system for suspending a pipeline in a trench, the pipe being spaced from the trench sides and bottom, comprising flexible load-bearing sling means through which the pipe is inserted for supporting the same, anchor means supported by the walls of the trench securing the sling means to the wall and supporting the pipe freely within the latter, and foamed plastic fully surrounding the pipe and partially surrounding at least a portion of the sling means and a portion of the anchor means.
Claim 3
Dependent Claim
22 words
A system as set forth in claim 1, wherein the foamed plastic is formed by being foamed in place within the trench.
Claim 4
Dependent Claim
23 words
A system as set forth in claim 1, wherein the foamed plastic is in the form of a wrapping applied to the pipe.
Claim 5
Dependent Claim
21 words
A system as set forth in claim 1, including shock absorbing means for connecting the sling means to the anchor means.
Claim 6
Dependent Claim
19 words
A system as set forth in claim 4, wherein the foamed plastic fully surrounds the sling and anchor means.
Claim 7
Dependent Claim
16 words
A system as set forth in claim 1, wherein the plastic is a closed cell foam.
Claim 8
Independent Claim
80 words
The method of suspending a pipeline which comprises the steps of preparing a trench of a depth and width appreciably greater than the diameter of the pipe, hanging the pipe on a support within the trench in spaced relation so that it is relatively free to move in all directions, and applying a closed cell plastic foam fully about the pipe and partially about at least a portion of the support within the trench to insulate and seal the same.
Claim 9
Independent Claim
80 words
The method of suspending a pipeline which comprises the steps of preparing a trench of a depth and width appreciably greater than the diameter of the pipe, hanging the pipe on a support within the trench in spaced relation so that it is relatively free to move in all directions, and applying a closed cell plastic foam fully about the pipe and partially about at least a portion of the support within the trench to insulate and seal the same.
Claim 10
Dependent Claim
20 words
The method of claim 7, wherein the foam is applied by foaming the plastic within the trench about the pipe.
Claim 11
Dependent Claim
16 words
The method of claim 7, wherein the foam is applied as a wrapping about the pipe.
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) | 1976-03-26 | 1976-09-25 | 1977-03-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-03-26 | 1980-09-25 | 1981-03-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-03-26 | 1984-09-25 | 1985-03-27 | $7700.00 | Window Closed / Lapsed |