EP0034294A2
Expired / Lapsed
EP
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Vulcanized reinforced air conditioner hose and method of making the same
Assignee: Uniroyal Inc
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Filing: 1981-02-02
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Granted: —
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Expires: 2001-02-02
Abstract
Abstract Vulcanized reinforced air conditioner hose includes an inner layer of nylon resin not less than about 0.006 inch (0.015 cm) and not more than about 0.030 inch (0.0762 cm) thick which forms the inner surface of the hose, an outer layer of elastomeric material that surrounds the inner layer and forms the external environment-resistant cover of the hose, and a layer of filamentary reinforcement interposed between the inner and outer layers. The hose is characterized by a flexibil- ityvalue, expressed in terms of the force required to achieve a specified bending deflection, and by a refrigerant permeation value, expressed in terms of the weight loss of refrigerant through the hose wall per unit length of the hose peryear, that are not greater than certain respective specified maxima as measured by prescribed testing procedures. Methods of manufacturing such hose are also disclosed. This abstract is notto be taken either as a complete exposition or as a lim i ta- tion of the present invention, however, the full nature and extent of the invention being discernible only by reference to and from the entire disclosure.
Inventors
- 👤 Harry D. Visser
- 👤 Carl Derderian
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-02 07:54
CPC Classifications
F; F16; F16L; F16L11/00; F16L11/04; F16L11/08; F16L11/085; B; B60; B60H; B60H1/00; B60H1/00507; B60H1/00557; B60H1/00571
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
185 words
A vulcanized reinforced air conditioner hose which includes a tubular inner layer of nylon resin that forms the inner surface of the hose and provides resistance to permeation of refrigerant fluid through the hose wall, an outer layer surrounding the inner layer and made of an elastomeric material that forms the cover of the hose and provides resistance to external environmental factors, and a layer of filamentary reinforcement disposed intermediate the outer and inner layers and surrounding the latter, characterized in that (a) the flexibility value of the hose, which is defined as the force required to impart to the hose a bending deflection of 1.0 inch (2.54 cm) when the force is applied to a longitudinally unconstrained section of the hose at a point located midway between two support points spaced 6 inches (15.24 cm) apart, is not greater than 13.0 lbs. (5.90 kg), and (b) the refrigerant permeation value of the hose, which is defined as the weight loss of refrigerant per unit length of hose per year as measured by SAE test method J51B, is not greater than 1.0 Ib/ft/yr (1.48 kg/m/yr).
Claim 2
Dependent Claim
185 words
A vulcanized reinforced air conditioner hose which includes a tubular inner layer of nylon resin that forms the inner surface of the hose and provides resistance to permeation of refrigerant fluid through the hose wall, an outer layer surrounding the inner layer and made of an elastomeric material that forms the cover of the hose and provides resistance to external environmental factors, and a layer of filamentary reinforcement disposed intermediate the outer and inner layers and surrounding the latter, characterized in that (a) the flexibility value of the hose, which is defined as the force required to impart to the hose a bending deflection of 1.0 inch (2.54 cm) when the force is applied to a longitudinally unconstrained section of the hose at a point located midway between two support points spaced 6 inches (15.24 cm) apart, is not greater than 13.0 lbs. (5.90 kg), and (b) the refrigerant permeation value of the hose, which is defined as the weight loss of refrigerant per unit length of hose per year as measured by SAE test method J51B, is not greater than 1.0 Ib/ft/yr (1.48 kg/m/yr).
Claim 3
Dependent Claim
24 words
A hose as claimed in claim 1, wherein the wall thickness of said inner layer is not greater than about 0.030 inch (0.0762 cm).
Claim 4
Dependent Claim
25 words
A hose as claimed in claim 1 or 2, wherein the wall thickness of said inner layer is not less than 0.006 inch (0.015 cm).
Claim 5
Dependent Claim
25 words
A hose as claimed in claim 1, wherein the wall thickness of said inner layer is in the range of about 0.010-0.030 inch (0.0254-0.0762 cm).
Claim 6
Dependent Claim
25 words
A hose as claimed in claim 1, wherein the wall thickness of said inner layer is in the range of about 0.010-0.020 inch (0.0254-0.051 cm).
Claim 7
Dependent Claim
50 words
A hose as claimed in claim 1, wherein said wall thickness of said inner layer is in the range of 0.010-0.030 inch (0.0254-0.0762 cm), said flexibility value is in the range of 3.5-13 lbs. (1.59-5.90 kg), and said refrigerant permeation value is in the range of 0.030-0.85 lb/ft/yr (0.45-1.266 kg/m/yr).
Claim 8
Dependent Claim
50 words
A hose as claimed in claim 1, wherein said wall thickness of said inner layer is in the range of 0.010-0.020 inch (0.0254-0.051 cm), said flexibility value is in the range of 3.5-10 lbs. (1.59-4.54 kg), and said refrigerant permeation value is in the range of 0.30-0.85 lb/ft/yr (0.45-1.266 kg/m/yr).
Claim 9
Dependent Claim
23 words
A hose as claimed in claim 1, 6 or 7, wherein the inner diameter of said inner layer is 0.625 inch (1.59 cm).
Claim 10
Dependent Claim
23 words
A hose as claimed in claim 1, 6 or 7, wherein the inner diameter of said inner layer is 0.50 inch (1.27 cm).
Claim 11
Dependent Claim
23 words
A hose as claimed in claim 1, 6 or 7, wherein the inner diameter of said inner layer is 0.41 inch (1.04 cm).
Claim 12
Dependent Claim
23 words
A hose as claimed in claim 1, 6 or 7, wherein the inner diameter of said inner layer is 0.3125 inch (0.79 cm).
Claim 13
Dependent Claim
29 words
A hose as claimed in claim 1, wherein said nylon resin is a copolymer of nylon 6 and nylon 66, and said elastomeric material is EPDM or neoprene rubber.
Claim 14
Dependent Claim
38 words
A hose as claimed in claim 1 or 12, wherein the material of which said filamentary reinforcement is made is a fiber selected from the group consisting of nylon, aromatic polyamide (aramid), polyester, rayon, glass and metal wire.
Claim 15
Independent Claim
248 words
A method of making a vulcanized reinforced air conditioner hose the construction of which includes a tubular inner layer of nylon resin that forms the inner surface of the hose and provides resistance to permeation of refrigerant fluid through the hose wall, an outer layer surrounding the inner layer and made of an elastomeric material that forms the cover of the hose and provides resistance to external environmental factors, and a layer of filamentary reinforcement disposed intermediate the outer and inner layers and surrounding the letter, and which method comprises that (a) : layers of nylon resin, filamentary reinforcement and uncured elastomeric material are built up in sequence on a solid flexible mandrel that is advanced longitudinally in sequence through a plurality of respective layer building stations, (b) the entire mandrel-borne composite is subjected to a curing operation for vulcanizing the elastomeric material, and (c) at the end of the curing operation the mandrel is extracted from the cured hose; characterized in that (A) said layer of nylon resin is built up by extrusion of nylon resin onto and circumferentially about the mandrel to a thickness of not less than about 0.006 inch (0.015 cm) and not more than about 0.030 inch (0.0762 cm), and (B) prior to the entry of the mandrel with said nylon resin layer thereon into the filamentary reinforcement layer building station, a layer of a material for adhesively bonding said filamentary reinforcement layer to said nylon resin layer is deposited on the latter.
Claim 16
Independent Claim
248 words
A method of making a vulcanized reinforced air conditioner hose the construction of which includes a tubular inner layer of nylon resin that forms the inner surface of the hose and provides resistance to permeation of refrigerant fluid through the hose wall, an outer layer surrounding the inner layer and made of an elastomeric material that forms the cover of the hose and provides resistance to external environmental factors, and a layer of filamentary reinforcement disposed intermediate the outer and inner layers and surrounding the letter, and which method comprises that (a) : layers of nylon resin, filamentary reinforcement and uncured elastomeric material are built up in sequence on a solid flexible mandrel that is advanced longitudinally in sequence through a plurality of respective layer building stations, (b) the entire mandrel-borne composite is subjected to a curing operation for vulcanizing the elastomeric material, and (c) at the end of the curing operation the mandrel is extracted from the cured hose; characterized in that (A) said layer of nylon resin is built up by extrusion of nylon resin onto and circumferentially about the mandrel to a thickness of not less than about 0.006 inch (0.015 cm) and not more than about 0.030 inch (0.0762 cm), and (B) prior to the entry of the mandrel with said nylon resin layer thereon into the filamentary reinforcement layer building station, a layer of a material for adhesively bonding said filamentary reinforcement layer to said nylon resin layer is deposited on the latter.
Claim 17
Dependent Claim
52 words
A method as claimed in claim 14, characterized in that after the mandrel with said nylon resin layer thereon has emerged from the nylon resin layer building station and prior to the depositing of said adhesive bonding material layer onto said nylon resin layer, the latter is subjected to a cooling operation.
Claim 18
Dependent Claim
86 words
A method as claimed in claim 14 or 15, characterized in that said adhesive bonding material is initially in the form of a tape the width of which is not less than the outer cross-sectional circumference of said nylon resin layer on the mandrel, and said tape is laid longitudinally onto the top surface region of said nylon resin layer on the mandrel and is subsequently wrapped fully about said nylon resin layer by said filamentary reinforcement concomitantly with the formation of said filamentary reinforcement layer.
Claim 19
Dependent Claim
52 words
.17. A method as claimed in claim 14 or 15, characterized in that said adhesive bonding material is initially in the form of a tape, and said tape is wound spirally about said nylon resin layer on the mandrel with a slight amount of overlap between successive adjacent turns of said tape.
References Cited (Backward Citations)
No citation records indexed.
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