Patent ID: 7075403
Filing Date: 2006-07-11
Classification: F04C,H01H

Abstract:
1. A protector comprising a header assembly having a metal plate mounting first and second terminals electrically isolated from one another and from the metal plate, a cup-shaped metal housing received on the header assembly forming a chamber, the housing having a top wall and a depending sidewall, a stationary electrical contact mounted on the first terminal, a heater element having first and second ends, the first end connected to the second terminal and the second end connected to the metal plate of the header assembly, an arm assembly having a movable plate and a snap acting thermally responsive member, each having first and second ends, the first ends of the movable plate and the snap acting member fixedly connected to the top wall of the housing, the snap acting member adapted to move between opposite dished configurations, an electrical movable contact, mounted on the second end of the movable plate and arranged to move into and out of engagement with the stationary electrical contact, the second end of the movable plate formed with an upstanding part extending upwardly from the movable plate and a transversely extending window being formed in the upstanding part, the second end of the snap acting thermally responsive member being loosely received in the window and arranged to move the second end of the movable plate when the snap acting member snaps from one dished configuration with the contacts in engagement to an opposite dished configuration with the contacts out of engagement with one another.