Patent ID: 7348509

Claim:
A pressure switch comprising: a diaphragm; a plunger coupled to said diaphragm, wherein said plunger is driven when a force of a pressure media is applied to said diaphragm; a first terminal with a fixed contact; a second terminal coupled to a snap action blade with a movable contact coupled thereto; and a spring abutting on an inner surface of said plunger, wherein said spring applies a spring force against said plunger, and wherein when said snap action blade is a quiescent position in which said plunger is not driven, said fixed contact of said first terminal is in electrical contact with said movable contact of said second terminal, and upon depression of said plunger, said snap action blade deflects to a deflected position whereby the movable contact is not in electrical contact with the fixed contact and an output of said switch through said terminals switches when said fixed and moveable contacts separate due to deflection by said snap action blade.