Sealed electrical switch and mounting therefor

An electrical switch comprising a housing, a heat responsive member, a stationary and a movable contact mounted in the housing, the movable contact adapted to move into and out of engagement with the stationary contact under the influence of the heat responsive member, electrical terminal means electrically connected to the contacts and extending from within the housing to without the housing, leads having a plastic insulating layer connected to the terminals, a metallic cup shaped member having a temperature sensing bottom wall and an upstanding wall extending therefrom, the heat responsive member thermally coupled to the temperature sensing bottom wall, a plastic sleeve received about the periphery of the upstanding wall and sealingly connected thereto, the sleeve having an opening through which the leads extend, the opening being closed by the plastic of the sleeve adjacent to the opening and aligned portions of the plastic layer of the leads being coalesced together, a generally flat mounting plate welded to the outside surface of the temperature sensing bottom wall, a recess formed between a portion of the mounting plate and the temperature sensing bottom wall and an element connectable to a surface whose temperature is to be monitored having at least a portion received in the recess to connect the element to the mounting plate.

A thermally responsive electrical switch comprising a housing, a stationary and a movable contact mounted in the housing, the movable contact adapted to move into and out of engagement with the stationary contact, temperature responsive means to cause the movable contact to move between its engaged and disengaged position with the stationary contact in response to selected temperature conditions, electrical terminal means electrically connected to the contacts, the switch having a metallic temperature sensing bottom wall, a generally flat mounting plate welded to the outside surface of the temperature sensing bottom wall, a recess formed between a portion of the mounting palte and, the temperature sensing bottom wall and an element connectable to a surface whose temperature is to be monitored having at least a portion received in the recess to connect the element to the mounting plate, the element including a strap and the recess being a strap receiving portion, and a projection is formed on one of the strap receiving portion of the mounting plate and the strap and a porjection receiving aperture is provided on the other of the strap receiving portion of the mounting plate and the strap to maintain the strap at a selected location relative to the bottom surface of the cup shaped member.

A thermally responsive electrical switch comprising a housing, a stationary and a movable contact mounted in the housing, the movable contact adapted to move into and out of engagement with the stationary contact, temperature responsive means to cause the movable contact to move between its engaged and disengaged position with the stationary contact in response to selected temperature conditions, electrical terminal means electrically connected to the contacts, the switch having a metallic temperature sensing bottom wall, a generally flat mounting plate welded to the outside surface of the temperature sensing bottom wall, a recess formed between a portion of the moutning plate and the temperature sensing bottom wall and an element connectable to a surface whose temperature is to be monitored having at least a portion received in the recess to connect the element to the mounting plate, the mounting plate having two opposite ends and the recess being formed at each of the ends, and further including a generally U-shaped clip having two legs extending from a generally flat bight, the bight having a cut out portion adapted to fit over the plate, the legs adapted to clampingly engage a tube and maintain it in close thermal contact with the plate, and tabs extending from the legs into the cut out portion and received in the tab receiving portions.

An electrical switch comprising a housing, a heat responsive member, a stationary and a movable contact mounted in the housing, the movable contact adapted to move into and out of engagement with the stationary contact under the influence of the heat responsive member, electrical terminal means electrically connected to the contacts and extending from within the housing to without the housing, leads having a plastic insulating layer connected to the terminals, a metallic cup shaped member having a temperature sensing bottom wall and an upstanding wall extending therefrom, the heat responsive member thermally coupled to the temperature sensing bottom wall, a plastic sleeve received about the periphery of the upstanding wall and sealingly connected thereto, the sleeve having an opening through which the leads extend and the opening being closed by the plastic of the sleeve adjacent to the opening and aligned portions of the plastic layer of the leads being coalesced together.

An electrical switch comprising a housing, a condition responsive member, a metallic member mounting the condition responsive member attached to the housing a stationary and a movable contact mounted in the housing, the movable contact adapted to move into and out of engagement with the stationary contact under the influence of the condition responsive member, electrical terminal means electrically connected to the contacts and extending from within the housing to without the housing, leads having a plastic insulating layer connected to the terminals, the metallic member mounting the condition responsive member having a wall extending therefrom, a plastic sleeve received about the periphery of the wall and sealingly connected thereto, the sleeve having an opening through which the leads extend and the opening being closed by the plastic of the sleeve adjacent to the opening and aligned portions of the plastic layer of the leads being coalesced together.