Coupling for fire hose with built-in communication cable
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Apr 3, 1990
Grant Date -
N/A
app pub date -
Jan 4, 1989
filing date -
Apr 15, 1988
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The present invention relates to a coupling for fire hoses, wherein the fire hose is provided with a built-in communication cable. An inner cylinder is provided which is substantially identical for either the male or female unit. The inner cylinder includes a base end part fitted with a fire hose with a built-in communication cable. An annular sealing material is provided for insulating and water-proofing an opening end face of the inner cylinder, and provided with an annular conductor connected to the communication cable. An outer cylinder is provided which idly engages with an outer peripheral surface of the inner cylinder. A groove part is provided on an inner peripheral surface of the outer cylinder extending to a corresponding one of the opening windows such that when the two outer cylinders are turned with respect to each other, the groove part of one outer cylinder is engaged with the engaging projection of the other outer cylinder, the outer cylinders are brought into contact or separated from one another. When the outer cylinders are brought into contact the annular sealing material on the respective inner cylinders is brought into pressurized contact thereby providing contact between the annular conductor of each of the outer cylinders.
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Family
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Cited Art Landscape
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