US3871408A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oil suction and discharge hose
Assignee: Individual
•
Filing: 1973-08-10
•
Granted: 1975-03-18
•
Expires: 1993-08-10
Abstract
Abstract A suction and discharge hose is disclosed. The hose includes a tubular substrate which incorporates two or more plies of reinforcing cords, each ply being helically wound at an angle of 52* relative to the hose axis and crossed relative to the adjacent ply. A plurality of axially alternating sections of a relatively hard and of a relatively soft polymeric material circumferentially surround the substrate. Two or more plies of monofilament polyester, which has a tensile modulus exceeding ninety grams per denier, overly each of the sections of the hard polymeric material only, and an outer cover of an abrasion resistant rubber circumferentially surrounds the plies of monofilament polyester and the sections of soft polymeric material.
Inventors
- 👤 James Wood
- 👤 George Sunnett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 14:29
CPC Classifications
F; F16; F16L; F16L11/00; F16L11/04; F16L11/08; F16L11/085; F16L11/087; F16L11/12; F16L11/133
Claims Analysis
Total Claims: 42
Claim 1
Independent Claim
124 words
A flexible suction and discharge hose comprising: a tubular substrate including a plurality of plies of reinforcing cords, the cords in each ply extending parallel to one another at a pre-selected bias angle relative to the axis of the tubular substrate and being crossed with respect to the cords of each next adjacent ply; a plurality of axially alternating sections of a first material and of a second material circumferentially surrounding said substrate, the second material being more flexible then the first material, a fibre reinforcement layer overlying the sections of the first material only, said fibres having a tensile modulus greater than 50 grams per denier; and an outer cover circumferentially surrounding said fibre reinforcement layer and said sections of said second material.
Claim 2
Dependent Claim
124 words
A flexible suction and discharge hose comprising: a tubular substrate including a plurality of plies of reinforcing cords, the cords in each ply extending parallel to one another at a pre-selected bias angle relative to the axis of the tubular substrate and being crossed with respect to the cords of each next adjacent ply; a plurality of axially alternating sections of a first material and of a second material circumferentially surrounding said substrate, the second material being more flexible then the first material, a fibre reinforcement layer overlying the sections of the first material only, said fibres having a tensile modulus greater than 50 grams per denier; and an outer cover circumferentially surrounding said fibre reinforcement layer and said sections of said second material.
Claim 3
Dependent Claim
19 words
A hose according to claim 1 wherein said fibres have a tensile modulus greater than 90 grams per denier.
Claim 4
Dependent Claim
21 words
A hose according to claim 1 where the fibre is selected from the group consisting of polyamides, polyaramides, polyolefins and polybenzimidazole.
Claim 5
Dependent Claim
21 words
A hose according to claim 1 wherein the fibre is selected from the group consisting of modacrylics, graphite, carbon and metal.
Claim 6
Dependent Claim
12 words
A hose according to claim 1 where the fibre is monofilament polyester.
Claim 7
Dependent Claim
19 words
A hose according to claim 1 wherein said fibre reinforCement layer includes a plurality of plies of said fibre.
Claim 8
Dependent Claim
15 words
A hose according to claim 1 wherein each of said axially alternating sections are hoops.
Claim 9
Dependent Claim
31 words
A hose according to claim 7 in which the fibres of the reinforcement layer are wound around the hoops of said first material substantially at right angles to the hose axis.
Claim 10
Dependent Claim
22 words
A hose according to claim 1 wherein said axially alternating sections are helically wound contiguous strips of said first and second materials.
Claim 11
Dependent Claim
20 words
A hose according to claim 9 wherein the winding angle of said strips exceeds 70* relative to the hose axis.
Claim 12
Dependent Claim
33 words
A hose according to claim 9 wherein the fibres of said reinforcement layer are wound around the strip of said first material at the same winding angle as said strip of first material.
Claim 13
Dependent Claim
27 words
A hose according to claim 1 wherein the axial width of the sections of first material is greater than that of the sections of said second material.
Claim 14
Dependent Claim
35 words
A hose according to claim 12 wherein the axial width of the sections of first material is between 3 and 6 times greater than that of the axial width of the sections of second material.
Claim 15
Dependent Claim
14 words
A hose according to claim 1 wherein said first and second materials are polymeric.
Claim 16
Dependent Claim
38 words
A hose according to claim 1 wherein the Shore A hardness of the first material is between about 70* and about 90*, and the Shore A hardness of the second material is between about 30* and about 50*.
Claim 17
Dependent Claim
33 words
A hose according to claim 1 in which the first material is polymeric, and the second material is a foamed polymeric material, the hose structure having a mean density of less than 1.0.
Claim 18
Dependent Claim
12 words
A hose according to claim 16 wherein said first material is foamed.
Claim 19
Dependent Claim
13 words
A hose according to claim 17 wherein each of said polymers is rubber.
Claim 20
Dependent Claim
60 words
A hose according to claim 1 wherein the radial thickness of the sections of said first material progressively decreases from one end of said hose to the other end thereof and the radial thickness of the sections of said second material remains constant, thereby providing a hose which is progressively more flexible from said one end to said other end.
Claim 21
Dependent Claim
51 words
A hose according to claim 1 wherein the ratio of the axial widths of said first material to said second material progressively decreases from one end of said hose to the other end thereof, thereby providing a hose which is progressively more flexible from said one end to said other end.
Claim 22
Dependent Claim
64 words
A flexible suction and discharge hose comprising: a tubular substrate; a plurality of axially alternating sections of a first material and of a second material circumferentially surrounding said substrate, the second material being more flexible than the first material, and a fibre reinforcment layer overlying the sections of the first material only, said fibres having a tensile modulus greater than fifty grams per denier.
Claim 23
Dependent Claim
64 words
A flexible suction and discharge hose comprising: a tubular substrate; a plurality of axially alternating sections of a first material and of a second material circumferentially surrounding said substrate, the second material being more flexible than the first material, and a fibre reinforcment layer overlying the sections of the first material only, said fibres having a tensile modulus greater than fifty grams per denier.
Claim 24
Dependent Claim
19 words
A hose according to claim 21 wherein said fibres have a tensile modulus greater than 90 grams per denier.
Claim 25
Dependent Claim
21 words
A hose according to claim 21 where the fibre is selected from the group consisting of polyamides, polyaramides, polyolefins and polybenzimidazole.
Claim 26
Dependent Claim
21 words
A hose according to claim 21 wherein the fibre is selected from the group consisting of modacrylics, graphite, carbon and metal.
Claim 27
Dependent Claim
12 words
A hose according to claim 21 where the fibre is monofilament polyester.
Claim 28
Dependent Claim
19 words
A hose according to claim 21 wherein said fibre reinforcement layer includes a plurality of plies of said fibre.
Claim 29
Dependent Claim
15 words
A hose according to claim 21 wherein each of said axially alternating sections are hoops.
Claim 30
Dependent Claim
31 words
A hose according to claim 27 in which the fibres of the reinforcement layer are wound around the hoops of said first material substantially at right angles to the hose axis.
Claim 31
Dependent Claim
22 words
A hose according to claim 21 wherein said axially alternating sections are helically wound contiguous strips of said first and second materials.
Claim 32
Dependent Claim
20 words
A hose according to claim 29 wherein the winding angle of said strips exceeds 70* relative to the hose axis.
Claim 33
Dependent Claim
33 words
A hose according to claim 29 wherein the fibres of said reinforcement layer are wound around the strip of said first material at the same winding angle as said strip of first material.
Claim 34
Dependent Claim
27 words
A hose according to claim 21 wherein the axial width of the sections of first material is greater than that of the sections of said second material.
Claim 35
Dependent Claim
35 words
A hose according to claim 32 wherein the axial width of the sections of first material is between 3 and 6 times greater than that of the axial width of the sections of second material.
Claim 36
Dependent Claim
14 words
A hose according to claim 21 wherein said first and second materials are polymeric.
Claim 37
Dependent Claim
38 words
A hose according to claim 21 wherein the Shore A hardness of the first material is between about 70* and about 90*, and the Shore A hardness of the second material is between about 30* and about 50*.
Claim 38
Dependent Claim
33 words
A hose according to claim 21 in which the first material is polymeric, and the second material is a foamed polymeric material, the hose structure having a mean density of less than 1.0.
Claim 39
Dependent Claim
12 words
A hose according to claim 36 wherein said first material is foamed.
Claim 40
Dependent Claim
13 words
A hose according to claim 37 wherein each of said polymers is rubber.
Claim 41
Dependent Claim
60 words
A hose according to claim 21 wherein the radial thickness of the sections of said first material progressively decreases from one end of said hose to the other end thereof and the radial thickness of the sections of said second material remains constant, thereby providing a hose which is progressively more flexible from said one end to said other end.
Claim 42
Dependent Claim
51 words
A hose according to claim 21 wherein the ratio of the axial widths of said first material to said second material progressively decreases from one end of said hose to the other end thereof, thereby providing a hose which is progressively more flexible from said one end to said other end.
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) | 1978-03-17 | 1978-09-16 | 1979-03-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-17 | 1982-09-16 | 1983-03-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-17 | 1986-09-16 | 1987-03-18 | $7700.00 | Window Closed / Lapsed |