US5371934A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for making reinforced, thin-walled tubing
Assignee: Markel Group Inc
•
Filing: 1993-02-08
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Granted: 1994-12-13
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Expires: 2013-02-08
Abstract
Abstract Methods for reinforcing thin-walled, flexible tubing using pressurized fluids which have excellent mechanical integrity, including burst-strength. The methods comprise pressurizing a tubular conduit with pressurized fluid followed by applying reinforcing means to the conduit.
Inventors
- 👤 Warren G. Mang
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:21
CPC Classifications
A; A61; A61M; A61M25/00; A61M25/0009; A61M25/0012; F; F16; F16L; F16L11/00; F16L11/04; F16L11/10; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/4981; Y10T29/53; Y10T29/53987
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
64 words
A method of reinforcing a thin-walled conduit with reinforcing means, said method comprising: (a) providing a thin-walled conduit having a wall thickness of about 0.004 inch or less; (b) pressurizing said thin-walled conduit with pressurized fluid medium to a pressure of from about 60 to about 100 psi; and (c) applying said reinforcing means to said thin-walled conduit while said thin-walled conduit is pressurized.
Claim 2
Independent Claim
64 words
A method of reinforcing a thin-walled conduit with reinforcing means, said method comprising: (a) providing a thin-walled conduit having a wall thickness of about 0.004 inch or less; (b) pressurizing said thin-walled conduit with pressurized fluid medium to a pressure of from about 60 to about 100 psi; and (c) applying said reinforcing means to said thin-walled conduit while said thin-walled conduit is pressurized.
Claim 3
Dependent Claim
13 words
The method according to claim 1 wherein said conduit comprises a tubular conduit.
Claim 4
Dependent Claim
13 words
The method according to claim 2 wherein said conduit comprises a polymeric material.
Claim 5
Dependent Claim
11 words
The method according to claim 3 wherein said conduit comprises polytetrafluoroethylene.
Claim 6
Dependent Claim
14 words
The method according to claim 1 wherein said reinforcing means comprises metal wire reinforcement.
Claim 7
Dependent Claim
17 words
The method according to claim 5 wherein said metal wire reinforcement comprises a plurality of braided strands.
Claim 8
Dependent Claim
12 words
The method according to claim 1 wherein said fluid is pressurized air.
Claim 9
Dependent Claim
12 words
The method according to claim 7 wherein said fluid comprises pressurized water.
Claim 10
Dependent Claim
30 words
The method of claim 2 wherein said conduit comprises an outer diameter of about 0.030 to about 0.250 inch and an inner diameter of about 0.026 to about 0.246 inch.
Claim 11
Dependent Claim
21 words
The method according to claim 1 comprising pressurizing said conduit to a pressure of from about 60 to about 90 psi.
Claim 12
Dependent Claim
17 words
The method according to claim 10 comprising pressurizing said conduit to a pressure of about 70 psi.
Claim 13
Dependent Claim
20 words
The method according to claim 1 wherein said conduit comprises a wall thickness of about 0.001 to about 0.004 inch.
Claim 14
Dependent Claim
19 words
The method of claim 12 wherein said conduit comprises a wall thickness of about 0.002 to about 0.004 inch.
Claim 15
Dependent Claim
16 words
The method of claim 13 wherein said conduit comprises a wall thickness of about 0.002 inch.
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Cited
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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) | 1997-12-12 | 1998-06-13 | 1998-12-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-12-12 | 2002-06-13 | 2002-12-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-12-12 | 2006-06-13 | 2006-12-13 | $7700.00 | Window Closed / Lapsed |