High-pressure flexible hose sheath

Claim 2

A high-pressure hose combination adapted to be handheld comprising a flexible hose for containing a fluid under high pressure, a flexible sheath enclosing only the complete periphery of said hose for the axial length of said hose and radially spaced from saiD hose to provide a generally annular fluid transmitting gap extending axially to the ends of said sheath, and means at the ends of said sheath for providing less resistance to the axial extrusion of fluid from said gap than the radial extrusion of said fluid through said sheath in response to the bursting of said hose.

Claim 3

The sheath claimed in claim 1 in which said sheath is formed of a material withstanding a pressure of at least 4,000 p.s.i. without fracture to prevent radial extrusion of said fluid.

Claim 4

For use with the sheath claimed in claim 1, means for enabling axial movement within opposite predetermined limits of each end of said sheath relative said hose in response to only axial displacement of either said sheath or said hose.

Claim 5

A high-pressure hose combination adapted to be handheld comprising a flexible hose for communicating fluid under high pressure to a fitting, a ferrule fixed over each end of said hose to clamp said hose to a respective adapter arranged to communicate said fluid either to or from said hose, a metal coil having a plurality of turns extending over said hose with the internal diameter of said coil spaced radially outwardly from said hose to define a generally annular fluid transmitting gap extending axially to each hose ferrule, each turn of said coil having integrally formed radially and axially spaced walls with each spaced wall having an integrally formed radially offset wall interlocking a radially spaced and offset wall of an adjacent turn to facilitate limited axial movement of each turn relative each other turn without axial separation of said turns, and a ferrule fixed to said coil at opposite ends and overlapping each hose ferrule for axial movement relative the respective hose ferrule and spaced radially of the respective hose ferrule for enabling the axial extrusion of fluid from said gap between said metal coil and said hose under less resistance than the radial extrusion of said fluid from between the turns of said coil in response to the bursting of said hose.

Claim 6

A high-pressure hose combination adapted to be handheld comprising a flexible hose for communicating fluid under high pressure to a fitting, a ferrule fixed over each end of said hose to clamp said hose to a respective adapter arranged to communicate said fluid either to or from said hose, a metal coil having a plurality of turns extending over said hose with the internal diameter of said coil spaced radially outwardly from said hose to define a generally annular fluid transmitting gap extending axially to each hose ferrule, each turn of said coil having integrally formed radially and axially spaced walls with each spaced wall having an integrally formed radially offset wall interlocking a radially spaced and offset wall of an adjacent turn to facilitate limited axial movement of each turn relative each other turn without axial separation of said turns, and a ferrule fixed to said coil at opposite ends and overlapping each hose ferrule for axial movement relative the respective hose ferrule and spaced radially of the respective hose ferrule for enabling the axial extrusion of fluid from said gap between said metal coil and said hose under less resistance than the radial extrusion of said fluid from between the turns of said coil in response to the bursting of said hose.

Claim 7

A high-pressure hose combination adapted to be handheld comprising a flexible hose for communicating fluid under high pressure to a fitting, a ferrule fixed to each end of said hose, the improvement comprising a metal coil having a plurality of interlocked axially movable turns extending over said hose with the internal diameter of said coil spaced radially outwardly from said hose to define a generally annular fluid transmitting gap extending axially to each hose ferrule, a ferrule fixed to opposite ends of said metal coil and overlapping a respective hose ferrule with each coil ferrule being axially movable relative the respective hose ferrule, and a passageway formed between each coil ferrule and the respective hose ferrule for enabling the axial extrusion of fluid from said gap to atmosphere with less resistance than the resistance to radial extrusion through said coil in response to the bursting of said hose.

Claim 8

A high-pressure hose combination adapted to be handheld comprising a flexible hose for communicating fluid under high pressure to a fitting, a ferrule fixed to each end of said hose, the improvement comprising a metal coil having a plurality of interlocked axially movable turns extending over said hose with the internal diameter of said coil spaced radially outwardly from said hose to define a generally annular fluid transmitting gap extending axially to each hose ferrule, a ferrule fixed to opposite ends of said metal coil and overlapping a respective hose ferrule with each coil ferrule being axially movable relative the respective hose ferrule, and a passageway formed between each coil ferrule and the respective hose ferrule for enabling the axial extrusion of fluid from said gap to atmosphere with less resistance than the resistance to radial extrusion through said coil in response to the bursting of said hose.

Claim 9

The combination claimed in claim 5 in which said coil has an axial length between 8 inches and 10 inches and said fluid is under pressure of at least 4,000 p.s.i. and said coil has an inner diameter of substantially 0.64 inch spaced substantially 0.14 inch from said hose.

Claim 10

The combination claimed in claim 6, in which said coil ferrule terminates in an annular wall abutting the adjacent end turn on said coil with the inner periphery of said annular wall spaced substantially 0.12 inch from the adjacent hose ferrule.