Spring-loaded safety valve
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United States of America Patent
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-
Jul 6, 1993
Grant Date -
N/A
app pub date -
Oct 23, 1989
filing date -
Apr 25, 1987
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A spring-loaded safety valve provided with an integrated damping element that achieves a damping effect by the dissipative action of a shearing current and which involves a single-layer or multiple-layer virtually coaxial arrangement of tubes or active surfaces that can be moved telescopically with respect to one another.
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