# US 12,181,086 B2 · End terminations and unions for a hose construction with a coupling having a non-metallic insert and method of making same > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,181,086 B2 - Document ID: US12181086B2 - Status: Granted - Kind: B2 - Application number: 18/009,400 - Filed: 2021-06-04 - Published: 2023-08-17 - Granted: 2024-12-31 - Earliest claimed: 2020-06-09 - Assignees: Specialty RTP, Inc. - Applicants: Specialty RTP, Inc. - Inventors: John R. Wright, Jr. - Web page: https://patentgrep.com/patent/US12181086B2 ## CPC - F16L 33/2073: {directly connected to the rigid member} - B29C 45/261: {having tubular mould cavities} - F16L 33/2076: {by plastic deformation} - B29L 2031/24: Pipe joints or couplings (B29L2031/26 takes precedence) - F16L: PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL - B29C: SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING (making preforms B29B11/00; making laminated products by combining previously unconnected layers which become one product whose layers will remain together B32B37/00 - B32B41/00) - B29L: INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES ## Abstract A hose construction having a coupling secured to an end of a hose, with the coupling including a tubular insert formed with a polymer mixed with chopped reinforcement fiber and including first and second ends, with the first end being inserted in the hose, and the second end including a connector interface. A tubular metallic ferrule is connected to the tubular insert adjacent to the second end in order to form an annular hose receiving space between an outer surface of the insert and an inner surface of the ferrule. The end of the hose is received in the annular hose receiving space, and the ferrule is deformed inwardly against the hose to form a secure connection. The tubular insert formed of a non-metallic material has high strength and is resistant to corrosion due to contact with the materials being transported. ## Claims ### Claim 1 A hose construction, comprising: a hose having an inner peripheral surface and an outer peripheral surface, and a coupling secured to an end of said hose, the coupling including a tubular insert formed of a polymer mixed with chopped reinforcement fiber and including first and second ends, the first end being inserted in the hose, and the second end including a connector interface, and a tubular metallic ferrule that is connected to the tubular insert adjacent to the second end in order to form an annular hose receiving space between an outer surface of the insert and an inner surface of the ferrule, wherein the end of the hose is received in the annular hose receiving space and the ferrule is deformed inwardly against the hose to form a secure connection. ### Claim 2 (depends on 1) The hose construction of claim 1, wherein the insert has a yield strength of at least 30,000 PSI. ### Claim 3 (depends on 1) The hose construction of claim 1, wherein the insert has a yield strength of at least 45,000 PSI. ### Claim 4 (depends on 1) The hose construction of claim 1, wherein the polymer used to form the insert is Polyetheretherketone, Polyetherketoneketone, Polyaryletherketone, Polyphenylene Sulfide, or mixtures thereof. ### Claim 5 (depends on 4) The hose construction of claim 4, wherein the polymer is mixed with 18 wt % to 40 wt % of the chopped reinforcement fiber. ### Claim 6 (depends on 1) The hose construction of claim 1, wherein the chopped reinforcement fiber is at least one of chopped carbon fiber, chopped aramid fiber, or chopped glass fiber. ### Claim 7 (depends on 1) The hose construction of claim 1, wherein the insert has a wall thickness in a hose insertion area of about 0.125 inches. ### Claim 8 (depends on 1) The hose construction of claim 1, wherein the hose is a multi-layer reinforced thermoplastic tube. ### Claim 9 (depends on 1) The hose construction of claim 1, further comprising molded threads located on the tubular insert that are connected to threads on the tubular metallic ferrule. ### Claim 10 A method of forming a coupling for a hose construction, the method comprising: blending a polymer and chopped carbon fiber to form a molding compound; forming a tubular insert from the molding compound including first and second ends, the first end being configured for insertion into a hose, and the second end including a connector interface; and connecting a tubular metallic ferrule to the tubular insert adjacent to the second end in order to form an annular hose receiving space between an outer surface of the insert and an inner surface of the ferrule. ### Claim 11 (depends on 10) The method of claim 10, wherein the forming comprises injection molding. ### Claim 12 (depends on 10) The method of claim 10, wherein the forming comprises compression molding. ### Claim 13 (depends on 10) The method of claim 10, wherein the forming comprises machining from extruded bar stock formed from the molding compound. ### Claim 14 (depends on 10) The method of claim 10, wherein the polymer used to form the insert is Polyetheretherketone, Polyetherketoneketone, Polyaryletherketone, Polyphenylene Sulfide, or mixtures thereof. ### Claim 15 (depends on 10) The method of claim 10, wherein the chopped reinforcement fiber is at least one of chopped carbon fiber, chopped aramid fiber, or chopped glass fiber. ### Claim 16 (depends on 10) The method of claim 10, further comprising mixing the polymer with 18 wt % to 40 wt % of the chopped carbon fiber. ### Claim 17 (depends on 16) The method of claim 16, further comprising forming a wall thickness of the tubular insert in a hose insertion area of 0.125 inches. ### Claim 18 (depends on 10) A method of forming a hose construction, comprising: forming the coupling according to the method of claim 10; inserting an end of a hose in the annular hose receiving space; and deforming the ferrule inwardly against the hose to form a secure connection. ### Claim 19 A coupling configured for connection to a polymeric hose, the coupling comprising: a tubular insert formed of a polymer mixed with chopped reinforcement fiber and including first and second ends, the first end being configured for insertion into an end of the hose, and the second end including a connector interface, and a tubular metallic ferrule connected to the tubular insert adjacent to the second end in order to form an annular hose receiving space between an outer surface of the insert and an inner surface of the ferrule, wherein the ferrule is configured to be deformed inwardly against the hose to form a secure connection.