[특허]Flexible hose assembly with multiple flow passages

PARKER-HANNIFIN CORPORATION

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Flexible hose assembly with multiple flow passages

특허상세정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	F16L-011/22 F16L-033/207 F16L-039/02
출원번호	US-0315150 (2011-12-08)
등록번호	US-9958093 (2018-05-01)
발명자 / 주소	Pelletier, Robert Roger Ras, Raman
출원인 / 주소	PARKER-HANNIFIN CORPORATION
대리인 / 주소	Renner, Otto, Boisselle & Sklar, LLP
인용정보	피인용 횟수 : 0 인용 특허 : 15

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Provided is a flexible hose assembly having a flexible tube for conveying fuel through a first fuel passage formed interiorly of the flexible tube and a flexible hose surrounding the flexible tube and forming therewith a second fuel passage. The flexible tube provides internal support for the flexible hose while also allowing for flow of fuel through the second fuel passage and the fuel passages are separate from one another along a length of the flexible hose assembly. When one of the fuel passages is in a low flow or no flow condition, fuel flowing thr...

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1. A flexible hose assembly configured to be coupled to a fuel manifold, the flexible hose assembly including: a flexible tube for conveying fuel through a first fuel passage formed interiorly of the flexible tube;a flexible hose surrounding the flexible tube and forming therewith a second fuel passage;wherein the flexible tube provides internal support for the flexible hose when contacting an inner diameter of the flexible hose at a plurality of locations along the length of the flexible hose, which locations are longitudinally-spaced apart to allow for flow of fuel through the second fuel passage;an inner tube coupled to the flexible tube, the first fuel passage being formed interiorly of the inner tube and the flexible tube; anda connector at least partially surrounding the inner tube and coupled to the flexible hose, the connector and flexible hose forming with the inner tube and flexible tube the second fuel passage, the connector having a threaded portion onto which a nut can be threaded for coupling the flexible hose assembly to the fuel manifold, and the threaded portion surrounding each of the first fuel passage and the second fuel passage,wherein the flexible tube has a plurality of convolutes extending radially outward from a body of the flexible tube and along a length thereof. 2. A flexible hose assembly according to claim 1, wherein the connector includes a plurality of grooves on an outer circumferential surface configured to bite into an inner circumferential surface of the flexible hose to couple the connector to the flexible hose. 3. A flexible hose assembly according to claim 2, further comprising a socket surrounding a portion of the connector and the flexible hose, the socket including a plurality of grooves on an inner circumferential surface, and the socket configured to be crimped to bite into an outer circumferential surface of the of the flexible hose. 4. A flexible hose assembly according to claim 1, further including at least one centering lug interposed between the inner tube and the connector for maintaining the second flow passage therebetween. 5. A flexible hose assembly according to claim 1, in combination with a manifold, wherein the connector is an angled connector providing an angled connection between the flexible hose and the manifold. 6. A flexible hose assembly according to claim 1, wherein a distance from a center of the flexible tube to an outer surface of each convolute is less than or equal to a radius of the flexible hose. 7. A flexible hose assembly according to claim 6, wherein the outer surface of at least one convolute is configured to contact the flexible hose during bending or flexing of the flexible hose to support the flexible hose while also allowing for flow of fuel through the second fuel passage. 8. A method of delivering fuel from a manifold to a fuel injector through a flexible hose assembly according to claim 1, the method including: delivering fuel to the fuel injector through the first fuel passage; anddelivering fuel to the fuel injector through the second fuel passage. 9. A flexible hose assembly according to claim 1, wherein the first fuel passage and the second fuel passage are concentric at the location of the threaded portion along the length of the flexible hose assembly. 10. A flexible hose assembly according to claim 1, wherein the first fuel passage and the second fuel passage extend axially to the axial end of the flexible hose assembly and terminate at axially opening outlets at the axial end of the flexible hose assembly. 11. A flexible hose assembly according to claim 1, wherein the flexible tube is a spiral tube and the second fuel passage is a spiral fuel passage between the flexible tube and flexible hose. 12. A flexible hose assembly according to claim 1, wherein the flexible tube is a bellows or beaded tube. 13. A flexible hose assembly configured to be coupled to a fuel manifold, the flexible hose assembly including: a flexible tube for conveying fuel through a first fuel passage formed interiorly of the flexible tube;a flexible hose surrounding the flexible tube and forming therewith a second fuel passage;wherein the flexible tube provides internal support for the flexible hose when contacting an inner diameter of the flexible hose at a plurality of locations along the length of the flexible hose, which locations are longitudinally-spaced apart to allow for flow of fuel through the second fuel passage;an inner tube coupled to the flexible tube, the first fuel passage being formed interiorly of the inner tube and the flexible tube;a connector at least partially surrounding the inner tube and coupled to the flexible hose, the connector and flexible hose forming with the inner tube and flexible tube the second fuel passage, the connector having a threaded portion onto which a nut can be threaded for coupling the flexible hose assembly to the fuel manifold, and the threaded portion surrounding each of the first fuel passage and the second fuel passage; andat least one braze joint between the inner tube and the connector for maintaining the second flow passage therebetween. 14. A flexible hose assembly configured to be coupled to a fuel manifold, the flexible hose assembly including: a flexible tube for conveying fuel through a first fuel passage formed interiorly of the flexible tube;a flexible hose surrounding the flexible tube and forming therewith a second fuel passage;wherein the flexible tube provides internal support for the flexible hose when contacting an inner diameter of the flexible hose at a plurality of locations along the length of the flexible hose, which locations are longitudinally-spaced apart to allow for flow of fuel through the second fuel passage;an inner tube coupled to the flexible tube, the first fuel passage being formed interiorly of the inner tube and the flexible tube; anda connector at least partially surrounding the inner tube and coupled to the flexible hose, the connector and flexible hose forming with the inner tube and flexible tube the second fuel passage, the connector having a threaded portion onto which a nut can be threaded for coupling the flexible hose assembly to the fuel manifold, and the threaded portion surrounding each of the first fuel passage and the second fuel passage,wherein the flexible tube is a spiral tube and the second fuel passage is a spiral fuel passage between the flexible tube and flexible hose. 15. A flexible hose assembly configured to be coupled to a fuel manifold, the flexible hose assembly including: a flexible tube for conveying fuel through a first fuel passage formed interiorly of the flexible tube;a flexible hose surrounding the flexible tube and forming therewith a second fuel passage;wherein the flexible tube provides internal support for the flexible hose when contacting an inner diameter of the flexible hose at a plurality of locations along the length of the flexible hose, which locations are longitudinally-spaced apart to allow for flow of fuel through the second fuel passage;an inner tube coupled to the flexible tube, the first fuel passage being formed interiorly of the inner tube and the flexible tube; anda connector at least partially surrounding the inner tube and coupled to the flexible hose, the connector and flexible hose forming with the inner tube and flexible tube the second fuel passage, the connector having a threaded portion onto which a nut can be threaded for coupling the flexible hose assembly to the fuel manifold, and the threaded portion surrounding each of the first fuel passage and the second fuel passage,wherein the flexible tube is a bellows or beaded tube. 16. A fuel manifold and flexible hose assembly including: a fuel manifold having a manifold fitting surrounding a manifold hose; anda flexible hose assembly configured to be coupled to the fuel manifold, the flexible hose assembly includinga flexible tube for conveying fuel through a first fuel passage formed interiorly of the flexible tube;a flexible hose surrounding the flexible tube and forming therewith a second fuel passage;wherein the flexible tube provides internal support for the flexible hose when contacting an inner diameter of the flexible hose at a plurality of locations along the length of the flexible hose, which locations are longitudinally-spaced apart to allow for flow of fuel through the second fuel passage;an inner tube coupled to the flexible tube, the first fuel passage being formed interiorly of the inner tube and the flexible tube; anda connector at least partially surrounding the inner tube and coupled to the flexible hose, the connector and flexible hose forming with the inner tube and flexible tube the second fuel passage, the connector having a threaded portion onto which a nut can be threaded for coupling the flexible hose assembly to the fuel manifold, and the threaded portion surrounding each of the first fuel passage and the second fuel passage,wherein the connector has a proximal end coupled to the manifold fitting. 17. A fuel manifold and flexible hose assembly according to claim 16, further including: a nut coupled to the manifold fitting and having an inner circumferential groove and a nut threaded portion axially spaced from the groove on an inner circumferential surface of the nut;wherein the nut threaded portion is configured to be coupled to the threaded portion on an outer circumferential surface of the connector; andwherein a thrust wire is configured to be received in the inner circumferential groove of the nut threaded portion and in an outer circumferential groove of the manifold fitting. 18. A fuel manifold and flexible hose assembly according to claim 16, further including: a nut coupled to the manifold fitting and having a nut threaded portion on an inner circumferential surface of the nut;wherein the nut threaded portion is configured to be coupled to the threaded portion on an outer circumferential surface of the connector of the flexible hose assembly. 19. A fuel manifold and flexible hose assembly according to claim 16, the manifold further including a nut coupled to and surrounding the manifold fitting, wherein the nut is threadedly coupled to the threaded portion at a proximal end of the connector. 20. A flexible hose assembly configured to be coupled to an external component, the flexible hose assembly including: a flexible tube for conveying fuel through a first fuel passage formed interiorly of the flexible tube; anda flexible hose surrounding the flexible tube and forming therewith a second fuel passage;wherein the flexible tube is convoluted to provide internal support for the flexible hose when contacting an inner diameter of the flexible hose at a plurality of locations along the length of the flexible hose, which locations are longitudinally-spaced apart to allow for flow of fuel through the second fuel passage; andan inner tube coupled to the flexible tube, the first fuel passage being formed interiorly of the inner tube and the flexible tube; anda connector at least partially surrounding the inner tube and coupled to the flexible hose, the connector and flexible hose forming with the inner tube and flexible tube the second fuel passage,wherein the connector is configured for connection to the external component, and wherein the first fuel passage and the second fuel passage extend axially to the axial end of the flexible hose assembly and terminate at axially opening outlets at the axial end of the flexible hose assembly. 21. A flexible hose assembly according to claim 20, wherein the axially opening outlets of the first fuel passage and the second fuel passage are concentric.

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Flexible hose assembly with multiple flow passages

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Flexible hose assembly with multiple flow passages

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