Two part casing for trigger switch with one part mounting all switch contact members

Claim 2

An electric switch comprising an insulating casing made of two cooperating parts recessed to cooperatively receive and position conductive switch and circuit elements, a trigger member slidable in a cavity at one end of said casing, a yoke member pivotally mounted in said casing and operable between two positions, an over-center spring connecting said trigger member and said yoke imparting snap action movement to said yoke incident to movement of said trigger member, a movable contact carrier operated to and fro by said yoke member in the same direction as said trigger member, a plurality of bridging contact members mounted on said carrier in insulated relation, a plurality of sets of fixed contacts engageable and disengageable by different bridging contact members, all said fixed and bridging contact members being mounted in one of said casing parts, said fixed contacts being stamped from sheet metal and mounted edgewise in separate slots in said casing in generally parallel relationship to one another and in a direction transverse to the direction of movement of said movable contact members, said bridging contact members each remaining in engagement with one of the fixed contacts of its set in both positions of said yoke.

Claim 3

A switch as claimed in claim 1 in which said sets of fixed contacts have the contact surfaces of the sets in spaced planes.

Claim 4

A switch as claimed in claim 2 in which said contact carrier has oppositely facing contact surfaces on which said bridging contact members are supported, spring means supported in said carrier resiliently supporting at least one of said bridging contacts.

Claim 5

An electric switch adapted for dynamically braking an electric motor, comprising an insulating casing made of two cooperating parts recessed to cooperatively receive and position conductive switch and circuit elements, a trigger member slidable in a cavity at one end of said casing, a yoke member pivotally mounted in said casing and operable between two positions, an over-center spring connecting said trigger member and said yoke imparting snap action movement to said yoke incident to movement of said trigger member, a movable contact carrier operated to and fro by said yoke member in the same direction as said trigger member, a plurality of bridging contact members mounted on said carrier in insulated relation, a plurality of sets of fixed contacts engageable and disengageable by different bridging contact members, all said fixed and bridging contact members being mounted in one of said casing parts, said other casing part having recesses to guide the movement of said trigger member, said fixed contacts being stamped from sheet metal and mounted edgewise in separate slots in said casing in generally parallel relationship to one another and in a direction transverse to the direction of movement of said movable contact members, said bridging contact members each remaining in engagement with one of the fixed contacts of its set in both positions of said yoke, and a separate terminal member mounted in a separate slot in said casing and extending through a wall thereof, a capacitor in said casing connected to said separate terminal and to one of said contacts, and two diodes in said casing having opposite ends thereof connected to said one contact, one of said diodes being also connected to said separate terminal, and the other diode being connected also to one of said contact and terminal members.

Claim 6

An electric switch adapted for dynamically braking an electric motor, comprising an insulating casing made of two cooperating parts recessed to cooperatively receive and position conductive switch and circuit elements, a trigger member slidable in a cavity at one end of said casing, a yoke member pivotally mounted in said casing and operable between two positions, an over-center spring connecting said trigger member and said yoke imparting snap action movement to said yoke incident to movement of said trigger member, a movable contact carrier operated to and fro by said yoke member in the same direction as said trigger member, a plurality of bridging contact members mounted on said carrier in insulated relation, a plurality of sets of fixed contacts engageable and disengageable by different bridging contact members, all said fixed and bridging contact members being mounted in one of said casing parts, said other casing part having recesses to guide the movement of said trigger member, said fixed contacts being stamped from sheet metal and mounted edgewise in separate slots in said casing in generally parallel relationship to one another and in a direction transverse to the direction of movement of said movable contact members, said bridging contact members each remaining in engagement with one of the fixed contacts of its set in both positions of said yoke, and a separate terminal member mounted in a separate slot in said casing and extending through a wall thereof, a capacitor in said casing connected to said separate terminal and to one of said contacts, and two diodes in said casing having opposite ends thereof connected to said one contact, one of said diodes being also connected to said separate terminal, and the other diode being connected also to one of said contact and terminal members.

Claim 7

A switch as claimed in claim 4 in which said sets of fixed contacts have the contact surfaces of the sets in spaced planes.

Claim 8

An electric switch comprising an insulating casing made of two cooperating parts recessed to cooperatively receive and position conductive switch and circuit elements, a trigger member slidable in a cavity at one end of said casing, a yoke member pivotally mounted in said casing and operable between two positions, an over-center spring connecting said trigger member and said yoke imparting snap action movement to said yoke incident to movement of said trigger member, a movable contact carrier operated to and fro by said yoke member in the same direction as said trigger member, a plurality of bridging contact members mounted on said carrier in insulated relation, said contact carrier having oppositely facing contact surfaces on which said bridging contact members are supported, and spring means supported in said carrier resiliently supporting at least one of said bridging contacts, a plurality of sets of fixed contacts engageable and disengageable by different bridging contact members, all said fixed and bridging contact members being mounted in one of said casing part, said other casing part having recesses to guide the movement of said trigger member and said yoke member; said fixed contacts being stamped from sheet metal and mounted edgewise in separate slots in said one casing part in generally parallel relationship to one another and in a direction transverse to the direction of movement of said movable contact members, said bridging contact members each remaining in engagement with one of the fixed contacts of its set in both positions of said yoke.

Claim 9

An electric switch comprising an insulating casing made of two cooperating parts recessed to cooperatively receive and position conductive switch and circuit elements, a trigger member slidable in a cavity at one end of said casing, a yoke member pivotally mounted in said casing and operable between two positions, an over-center spring connecting said trigger member and said yoke imparting snap action movement to said yoke incident to movement of said trigger member, a movable contact carrier operated to and fro by said yoke member in the same direction as said trigger member, a plurality of bridging contact members mounted on said carrier in insulated relation, said contact carrier having oppositely facing contact surfaces on which said bridging contact members are supported, and spring means supported in said carrier resiliently supporting at least one of said bridging contacts, a plurality of sets of fixed contacts engageable and disengageable by different bridging contact members, all said fixed and bridging contact members being mounted in one of said casing part, said other casing part having recesses to guide the movement of said trigger member and said yoke member; said fixed contacts being stamped from sheet metal and mounted edgewise in separate slots in said one casing part in generally parallel relationship to one another and in a direction transverse to the direction of movement of said movable contact members, said bridging contact members each remaining in engagement with one of the fixed contacts of its set in both positions of said yoke.

Claim 10

A switch as claimed in claim 6 in which a plurality of said fixed contacts have terminal portions extending through apertures in the wall of said casing.