US3721271A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hose construction
Assignee: Imperial Eastman Corp
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Filing: 1971-10-28
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Granted: 1973-03-20
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Expires: 1991-10-28
Abstract
Abstract A hose construction having an inner tubular portion defining an outer substantially smooth nylon surface and reinforcing means surrounding the outer surface and having nylon fibers nonsolvently, autogenously bonded to the duct surface. Alternatively, or cumulatively, the reinforcing nylon fibers may be nonsolvently, autogenously bonded to the inner surface of a surrounding sheath having an inner substantially smooth nylon surface. A plurality of reinforcing layers may be provided. The securing of the reinforcing fibers to the confronting nylon surface means is effected substantially free of hooked interlocks therebetween.
Inventors
- 👤 A Chudgar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 06:37
CPC Classifications
F; F16; F16L; F16L11/00; F16L11/04; F16L11/08; F16L11/085; Y; Y10; Y10T; Y10T442/00; Y10T442/60; Y10T442/69
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
25 words
The hose construction of claim 1 wherein said reinforcing means includes fibers disposed therein having contact with said duct structure surface free of bonding therewith.
Claim 2
Dependent Claim
17 words
The hose construction of claim 1 wherein said reinforcing means is tensioned circumferentially about said duct structure.
Claim 3
Dependent Claim
17 words
The hose construction of claim 1 wherein said duct structure comprises a substantially homogeneous tube of nylon.
Claim 4
Dependent Claim
14 words
The hose construction of claim 1 wherein said reinforcing means comprises a textile fabric.
Claim 5
Dependent Claim
40 words
The hose construction of claim 1 wherein said reinforcing means comprises a textile fabric having nylon fibers and fibers formed of a different material contacting said duct structure Surface portion, said different material fibers being free of molecular bonding therewith.
Claim 6
Dependent Claim
19 words
The hose construction of claim 6 wherein said fabric comprises a blend of said nylon and different material fibers.
Claim 7
Dependent Claim
51 words
The hose construction of claim 1 wherein said reinforcing means comprises a textile fabric having surface fibers bonded to said duct structure surface portion by said linking of -CO- and -NH- groups, and further having fibers spaced from said duct structure surface portion free of fixed connection to said surface portion.
Claim 8
Dependent Claim
50 words
The hose construction of claim 1 wherein said reinforcing means comprises a textile fabric strip wrapped about said duct structure with the nylon fibers thereof bonded to said duct structure surface portion and to each other between overlying turns of the wrapped strip by said linking of -CO- and -NH-groups.
Claim 9
Dependent Claim
59 words
The hose construction of claim 1 wherein said reinforcing means comprises a plurality of layers of textile fabric disposed concentrically about said duct structure with nylon fibers of the innermost layer thereof bonded to said duct structure surface portion and with nylon fibers of the different layers bonded to each other by said linking of -CO- and -NH- groups.
Claim 10
Dependent Claim
17 words
The hose construction of claim 10 wherein said layers comprise a spiral wrap about said duct structure.
Claim 11
Dependent Claim
91 words
The hose construction of claim 10 including a tubular layer of nylon material having a smooth inner surface concentrically overlying said reinforcing means, nylon fibers of said reinforcing means being nonsolvently, autogenously bonded to said duct surface portion by a linking of -NH- groups of one of said duct and fabric structures with -CO- groups of the other of said structures and linking of -CO- groups of said one structure with -NH- groups of said other structure, substantially free of hooked interlocks between said fibers and said duct structure surface portion.
Claim 12
Dependent Claim
165 words
The hose construction of claim 10 including a tubular layer of nylon material having a smooth inner surface concentrically overlying said reinforcing means, nylon fibers of said reinforcing means being nonsolvently, autogenously bonded to said duct surface portion by a linking of -NH- groups of one of said duct and fabric structures with -CO- groups of the other of said structures and linking of -CO- groups of said one structure with -NH- groups of said other structure, substantially free of hooked interlocks between said fibers and said duct structure surface portion, and a second reinforcing means surrounding said tubular layer and having nylon fibers nonsolvently autogenously bonded to said duct surface portion by a linking of -NH- groups of one of said duct and fabric structures with -CO- groups of the other of said structures and linking of -CO- groups of said one structure with -NH- groups of said other structure, substantially free of hooked interlocks between said fibers and said duct structure surface portion.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-03-19 | 1976-09-18 | 1977-03-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-03-19 | 1980-09-18 | 1981-03-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-03-19 | 1984-09-18 | 1985-03-20 | $7700.00 | Window Closed / Lapsed |