Patent ID: 6331820
Filing Date: 2001-12-18
Classification: G01F,Y10T

Abstract:
A detector, comprising:a structure for mounting to a flow conduit;a switch housing mounted to said structure;a switch having alternate opened and closed states, wherein said switch is contained within said switch housing;a lever mechanism operatively connected to said switch and movable to change states of said switch, said lever mechanism having a switch activating portion extending through a wall of said switch housing and connected to said switch, said lever mechanism having a pivot part operatively connected to said switch activating portion which is pivotable upon detection of a condition within the flow conduit;a spring operatively connected to said pivot part at one end of the spring and operatively connected to said structure at an opposite end of the spring to bias said pivot part into a base position and wherein said switch housing is substantially sealed to be explosion-proof, said spring located outside of said switch housing.