Patent ID: 6633010
Filing Date: 2003-10-14
Classification: H01H

Abstract:
A pressure switch having a compact design comprising a base electrode which has a central through hole having a top opening and a bottom opening, a terminal member at least a part of which is contained in said through hole which is electrically insulated from the base electrode by a seal member completely sealing the top opening, a curved shaped fluid pressure responsive disc located in said central through hole adapted to snap over center between a first position in which said disc is not in engagement with the terminal member and a second position in which said disc is in engagement with the terminal member in response to being exposed to a fluid pressure of predetermined value, said disc being electrically connected to said base electrode, a diaphragm member positioned adjacent said disc for transmitting a fluid pressure from an external source to said disc, and a joining member positioned directly adjacent said diaphragm to work with said base electrode to sandwich said diaphragm between said joining member and said base electrode, said diaphragm being in sealing engagement with said base electrode and said joining member to completely seal closed the bottom opening thereby providing for a sealed chamber in said base electrode, said joining member, said diaphragm, and said base electrode all being made of a generally same metal.