US3921674A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hose construction and method of making same
Assignee: Dayco Products LLC
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Filing: 1974-03-18
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Granted: 1975-11-25
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Expires: 1994-03-18
Abstract
Abstract A hose construction and method of making same are provided and the hose construction includes an inner layer portion made primarily of an elastomeric material and another layer portion bonded against the inner layer portion and cured therewith as an integral part thereof with the outer layer portion being made of an elastomeric matrix compound having elongated fibers embedded therein in substantially parallel relation with the fibers extending in a helical pattern about a central longitudinal axis of the hose construction and with a predetermined angular relationship relative thereto.
Inventors
- 👤 Arthur D Logan
- 👤 James B Rush
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:18
CPC Classifications
B; B29; B29D; B29D23/00; B29D23/001; F; F16; F16L; F16L11/00; F16L11/04; F16L11/08; F16L11/24; B29K; B29K2021/00; B29K2105/00; B29K2105/06; Y; Y10; Y10S; Y10S273/00; Y10S273/07
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
84 words
A hose construction having a reference axis and comprising an inner layer portion made primarily of an elastomeric material and another layer portion bonded against said inner layer portion and cured therewith as an integral part thereof, said other layer portion being made of an elastomeric matrix compound having randomly distributed elongated fibers embedded therein in substantially parallel relation, said fibers extending in a helical pattern about said axis at a predetermined angular relationship relative thereto, said fibers providing reinforcement for said hose construction.
Claim 2
Dependent Claim
84 words
A hose construction having a reference axis and comprising an inner layer portion made primarily of an elastomeric material and another layer portion bonded against said inner layer portion and cured therewith as an integral part thereof, said other layer portion being made of an elastomeric matrix compound having randomly distributed elongated fibers embedded therein in substantially parallel relation, said fibers extending in a helical pattern about said axis at a predetermined angular relationship relative thereto, said fibers providing reinforcement for said hose construction.
Claim 3
Dependent Claim
53 words
A hose construction as set forth in claim 1 in which said layer portions are of approximately equal thickness and said inner layer portion also has parallel fibers therein, with said fibers in each layer portion extending in the same helical pattern and at substantially the same angular relationship with said reference axis.
Claim 4
Dependent Claim
20 words
A hose construction as set forth in claim 1 in which said predetermined angular relationship ranges between 50* and 60*.
Claim 5
Dependent Claim
94 words
A hose construction as set forth in claim 1 in which said inner layer portion is also made of an elastomeric matrix compound having randomly distributed elongated fibers embedded therein in substantially parallel relation, said fibers of said inner layer portion also extending in a helical pattern about said axis with a predetermined angular relationship relative thereto, said helical pattern of the fibers of said inner layer portion extending in a direction opposite from the helical pattern of said other layer portion, said fibers serving as the main reinforcement means for said hose construction.
Claim 6
Dependent Claim
28 words
A hose construction as set forth in claim 4 in which said predetermined angular relationship of said fibers of said inner layer portion ranges between 50 and 60*.
Claim 7
Dependent Claim
23 words
A hose construction as set forth in claim 4 in which each of said fibers has a length of three millimeters and less.
Claim 8
Dependent Claim
35 words
A hose construction as set forth in claim 4 and further comprising an inextensible elongated strength member bonded between said layer portions, said strength members serving to improve the structural strength of said hose construction.
Claim 9
Dependent Claim
23 words
A hose construction as set forth in claim 7 in which said inextensible elongated member is in the form of a metal wire.
Claim 10
Dependent Claim
40 words
A hose construction as set forth in claim 4 in which said inner layer portion and said other layer portion are made of different elastomeric compositions which are compatible with each other and are particularly adapted to be bonded together.
Claim 11
Dependent Claim
33 words
A hose construction as set forth in claim 9 in which said inner layer portion is made of nitrile butadiene rubber and said other layer portion is made of an ethylene propylene terpolymer.
Claim 12
Dependent Claim
38 words
A hose construction as set forth in claim 4 in which said fibers are wood-cellulose fibers having an elastic modulus of 2 to 5 X 106 psi and a tensile strength of 6 to 9 X 104 psi.
Claim 13
Dependent Claim
26 words
A hose construction as set forth in claim 4 in which said fibers provide their associated layer portions with a high Young''s modulus and mechanical anisotrophy.
Claim 14
Dependent Claim
37 words
A hose construction as set forth in claim 4 in which said fibers have a tensile modulus in the direction of fiber orientation which is much higher than in a direction transverse the direction of fiber orientation.
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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) | 1978-11-24 | 1979-05-26 | 1979-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-11-24 | 1983-05-26 | 1983-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-11-24 | 1987-05-26 | 1987-11-25 | $7700.00 | Window Closed / Lapsed |