Differential pressure signal device

Details Differential pressure signal device Differential pressure signal device

G - Physics

01

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116/48

G01L 19/12 (2006.01) B01D 46/42 (2006.01) D06F 58/22 (2006.01) G01L 13/00 (2006.01)

Patent

CA 1158930

Case 3519 DIFFERENTIAL PRESSURE SIGNAL DEVICE ABSTRACT A differential pressure signal device employing an audible vibratory reed assembly having the property of being activated auto- matically upon being subjected to a predetermined energy level. The assembly is preferably all plastic and includes a unique rockable flap- per valve that is automatically activated when the differential in pres- sure between two chambers reaches a predetermined level. The opening of said valve provides a large inrush of air that activates and operates the audible vibration of said reed until the differential in pres- sure is lowered below said predetermined level. -1-

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