Leak detector
OwnerJoseph R. Mooneyinventor
Life of this patent
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Abstract
In a leak detector of the by-pass check-valve type, as described in my U.S. Pat. No. 3,817,087, having a check-valve blocking lever that is pivotal by a leak flow through the by-pass, the leak flow being directed against the blocking lever through a nozzle mounted in slidable cooperation with a sleeve for concentrating the force of the leak flow and for following the blocking lever as it is pivoted thereby, thus maintaining the maximum force thereagainst, and thereby indicating a leak by restricting the opening of the check-valve and normal flow therethrough.
Claims5
In a poppet valve for connection in a fluid pressure line to detect any leakage downstream therefrom, said poppet valve defining up and down stream spaces connected by a valve seat, spring biased closed by a valve mounted to seat therein, and by a bypass of said valve seat, a leak detector comprising:
- a. a nozzle defined on the downstream end of said bypass for directing and accelerating a bypass leakage flow;
- and
- b. a blocking lever pivoted in said downstream space with an end opposite said nozzle and adjacent the valve and valve seat, said blocking lever being adapted to be pivoted by said leakage flow from said nozzle to swing an end over the seated valve and limit its displacement from the valve seat and thereby limit a normal pressure fluid flow through the poppet valve to signal the presence of a leak.
Dependencies are inferred from the claim text.