Failure sensor hose

Details Failure sensor hose Failure sensor hose

1996-12-19

1999-10-19

Wu, Daniel J.

Communications: electrical

Condition responsive indicating system

Specific condition

340605, 340618, 340620, 340438, 285 8, 285 10, 73 405R, 174 11R, G08B 2100

Patent

active

059696184

ABSTRACT:
A hose capable of carrying current to an indicator which provides external warning of imminent failure, or leak, due to wear occurring within the hose. The hose consists of an internal (primary) hose which is surrounded by an external (secondary) hose. Positioned in the annulus between the two hoses are two non-contacting electrical wires. At a point, the two electrical wires extend beyond and outside of the hoses. The protruding wires attach to a low voltage power source and to a hose failure indicator, or alarm, in series. When the internal (primary) hose fails, the fluid inside the hose escapes into the annulus between the primary and secondary hoses, making contact with the two electrical leads. This closes the circuit, thereby activating the external indicator, which may be a light or an audible signal or some other type of alarm. The external (secondary) hose is designed to withstand normal operating stress for a reasonable amount of operating hours until the hose can be replaced.

REFERENCES:
patent: 3564526 (1971-02-01), Butts
patent: 3907336 (1975-09-01), Siegmund
patent: 4142554 (1979-03-01), Washkewicz et al.
patent: 4212487 (1980-07-01), Jones et al.
patent: 4673926 (1987-06-01), Gorman
patent: 5084679 (1992-01-01), Lofgren
patent: 5279148 (1994-01-01), Brandes
patent: 5343738 (1994-09-01), Skaggs

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