초록 ▼

A coupling system for corrugated, flexible metal hoses includes fitting and washer assemblies. The fitting assembly comprises inner and outer fittings, the inner fitting being received on the hose and having a bore adapted to receive the washer assembly. The washer assembly includes an O-ring, a bac

A coupling system for corrugated, flexible metal hoses includes fitting and washer assemblies. The fitting assembly comprises inner and outer fittings, the inner fitting being received on the hose and having a bore adapted to receive the washer assembly. The washer assembly includes an O-ring, a backer washer and an expandable washer. The O-ring forms a seal connection with the flexible metal hose and the fitting assembly. The expandable washer provides a stop against which the backer ring is pushed by the O-ring. The expandable washer is also clamped between the fitting assembly and a corrugation of the flexible hose to resist withdrawal of the latter. Modified embodiment hose coupling systems are also disclosed and include inner and outer gaskets, compression gaskets, termination plates mounting the outer fitting and different combinations of retainer rings, backer rings and gasket rings. An application of the coupling systems includes a fuel source, a fuel line, a manifold, the coupling system, a corrugated flexible hose and a gas-fired appliance.

대표청구항 ▼

[ What is claimed is:] [1.] A coupling system for a flexible hose with corrugations and a hose end, which comprises:a) a fitting assembly including an inner fitting receiving the flexible hose and including an internally-threaded inner fitting bore and an externally-threaded outer fitting selectivel

[ What is claimed is:] [1.] A coupling system for a flexible hose with corrugations and a hose end, which comprises:a) a fitting assembly including an inner fitting receiving the flexible hose and including an internally-threaded inner fitting bore and an externally-threaded outer fitting selectively threadedly connected with said inner fitting and including an outer fitting bore;b) a retainer/seal assembly including:1) a retainer connected to said inner fitting and engaging said hose and retaining same in said inner fitting said retainer and said threaded connection between said fittings urging said hose end into engagement with said outer fitting; and2) sealing ring means positioned in one of said fitting bores and adapted for engaging said hose and said one fitting for forming a fluid seal therebetween; andc) said sealing ring means being retained in said one fitting by said hose.