Abstract: A double-throw switch comprises: a housing; a push button that is mounted for movement with respect to the housing; a first stationary terminal; a second stationary terminal; a moveable terminal that, when in contact with the first stationary terminal, closes a first circuit, and when in contact with the second stationary terminal, closes a second circuit; a first set of one or more positive stops that engage the first stationary terminal; and a second set of one or more positive stops that engage the second stationary terminal. The first set of one or more positive stops applies pressure to and maintains a predetermined position of the first stationary terminal. The second set of one or more positive stops applies pressure to and maintains a predetermined position of the second stationary terminal.

Abstract: A normally-open switch comprises: a housing; a push button that is mounted for movement with respect to the housing; a stationary terminal; a moveable terminal that, when in contact with the stationary terminal, completes a circuit; and one or more positive stops that engage the stationary terminal. When a force is applied to the push button, the moveable terminal makes contact with the stationary terminal, thus closing the circuit. When the force is removed, the moveable terminal breaks contact with the stationary terminal, thus opening the circuit. The one or more positive stops apply pressure to and maintain a predetermined position of the stationary terminal, but do not interfere with or impede the moveable terminal.

Abstract: A normally-closed switch comprises: a housing; a push button that is mounted for movement with respect to the housing; a stationary terminal; a moveable terminal that, when in contact with the stationary terminal, completes a circuit; and one or more positive stops that engage the stationary terminal. When a force is applied to the push button, the moveable terminal breaks contact with the stationary terminal, thus opening the circuit. The one or more positive stops apply pressure to and maintain a predetermined position of the stationary terminal, but do not interfere with or impede the moveable terminal.

Abstract: A plunger switch is described. The switch has a carrier having a base portion. The carrier base portion has channels which receive bridge contact members. The bridge contact members are trapped in the channels by a retainer member. The carrier is inserted into a housing with a neck portion extending through an opening in a top of the housing. A clip/stop member is positioned around the neck portion. A button is then attached to the neck portion with a pin. The neck portion and clip/stop member are pushed through the opening into the housing. Spring arms on the clip/stop member spring outward inside the housing to create an up-stop for the carrier with respect to the housing.

Abstract: A single pole, snap action, sump pump switch is disclosed having a housing containing a single electrically conductive contact arm with a contact mounted on a forward end portion, which arm is pivotally movable between on and off positions. The contact arm contains a pair of pivot tabs projecting from opposite sides on a rear end portion thereof, which pivot tabs fit within rearwardly opening, triangularly shaped notches on a U-shaped terminal. The notches form a fulcrum about which the contact arm rocks through the U-shaped member when switching between the on and off positions. An actuator arm is pivotally mounted between a pair of shoulders formed on opposing sidewalls within the housing and projects out of a rear end of the housing for connection to a float bulb assembly. A forward end of the actuator arm fits within a recess in one end of a pivot bushing.

Abstract: A pair of pushbuttons on opposite sides of a release pushbutton are individually depressible to operate a respective set of normally open contacts to a closed position. A rotatably mounted latch is spring biased against a medial surface of one of the pair of pushbuttons to engage a latch surface upon depression sufficient to close the contacts. The release pushbutton overlies a lever arm of the latch and depression of the release pushbutton rotates the latch free of the latch surface to release the depressed pushbutton. A solid bar interlock is pivotally mounted on the release pushbutton, and opposite ends of the interlock extend into the paths of the pair of pushbuttons. Latched depression of one outer pushbutton draws the release pushbutton down close to the latch lever arm, whereupon little movement of the other outer pushbutton is required to operate the latch to a release condition. Simultaneous depression of both outer pushbuttons is blocked by a limit stop prior to closure of either contact set.