Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
November 22, 2011
Patent Application Number
12229172
Date Filed
August 20, 2008
Patent Citations Received
Patent Primary Examiner
Patent abstract
A tripper unit for actuating a device (e.g. valve-closing actuator) upon contact with water. Basically, the tripper unit is comprised of a housing having a replaceable cartridge therein which, in turn, is wrapped with an adsorbent paper which prevents a plunger from moving downward. When a leak occurs, water will flow into the housing and into contact with the absorbent paper which will quickly disintegrate to allow a compression spring in said housing to move the plunger downward to thereby actuate the unit.
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