High pressure safety hose assembly and method of manufacturing
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United States of America Patent
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-
Nov 23, 1999
Grant Date -
N/A
app pub date -
May 9, 1996
filing date -
May 9, 1996
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A flexible, high pressure gas safety hose assembly is provided. The safety hose assembly has a tube with a first end and a second end, and a metal braid covering the tube. The hose assembly also has an inner fitting connected about the tube at the first end and at the second end, respectively, as well as a spiral spring guard wrapped around the braid covering the tube. An connection fitting having an integral inner flange is provided at the first end and at the second end of the tube. A collar is crimped over the spring guard to secure the spring guard to the integral inner flange of the connection fitting at the first end and at the second end of the tube. A method of manufacturing a safety hose assembly without welding is also provided. The method has the steps of: providing a tube having a first end and a second end; wrapping the tube in a protective braid; connecting an inner collar at the first end and at the second end of the tube; wrapping a spiral spring guard around the tube; providing a connection fitting having an inner flange; press-fitting the tube and spiral spring guard onto the connection fitting such that the spring guard encircles the inner flange; and crimping an outer collar over the spring guard and the inner flange to capture the spring guard onto the connection fitting.
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