Isolating switch with particular toggle and interlock means therefor

Claim 2

An isolating switch comprising, in combination, a relatively stationary contact, a movable contact carrier carrying a movable contact which makes separable engagement with said statiOnary contact, a rotatable actuating arm pivotally mounted on a fixed pivot intermediate the ends thereof, one end of said rotatable actuating arm being pivotally connected to said movable contact carrier, and the other end of said rotatable actuating arm carrying one end of a tension spring, the other end of said tension spring connected to said movable contact carrier at a point removed from the pivotal connection of said movable contact carrier to said rotatable actuating arm, whereby rotary movement of said rotatable actuating arm tensions said tension spring and also changes the direction of the biasing force to effect first a rotation of the entire assembly and subsequently an elongation and straightening of the toggle comprising said movable contact carrier and said rotatable actuating arm.

Claim 3

The combination according to claim 1, wherein a fixed stop is provided to halt the rotary movement of the assemblage and then force an extension of said toggle to a contact-closed position.

Claim 4

The combination according to claim 1, wherein a handle linkage is provided, and the rotation of the handle linkage effects an actuating rotary closing movement of said rotatable actuating arm.

Claim 5

The combination according to claim 1, wherein a cam plate is fixedly secured to said rotatable actuating arm and a spring-biased pawl device moves over the cam surface of the cam plate to provide an opening force.

Claim 6

The combination according to claim 4, wherein a portion of said cam plate affords an interlocking surface with a rotatable interlocking arm.

Claim 7

Electrical equipment including an isolating switch and a series-related contactor, said isolating switch comprising, in combination, a relatively stationary contact, a movable contact carrier carrying a movable contact which makes separable engagement with said stationary contact, a rotatable actuating arm pivotally mounted on a fixed pivot intermediate the ends thereof, one end of said rotatable actuating arm being pivotally connected to said movable contact carrier, and the other end of said rotatable actuating arm carrying one end of a tension spring, the other end of said tension spring connected to said movable contact carrier at a point removed from the pivotal connection of said movable contact carrier to said rotatable actuating arm, whereby rotary movement of said rotatable actuating arm tensions said tension spring and also changes the direction of the biasing force to effect first a rotation of the entire assembly and subsequently an elongation and straightening of the toggle comprising said movable contact carrier and said rotatable actuating arm, a cam plate fixedly secured to said rotatable actuating arm and having an interlocking cam surface, an operating rod responsive to the opening and closing movement of said contactor, and a rotatable interlocking arm pivotally connected to said operating rod so that when said contactor is closed, it is impossible to effect rotation of the cam plate and consequently rotation of the rotatable actuating arm.

Claim 8

Electrical equipment including an isolating switch and a series-related contactor, said isolating switch comprising, in combination, a relatively stationary contact, a movable contact carrier carrying a movable contact which makes separable engagement with said stationary contact, a rotatable actuating arm pivotally mounted on a fixed pivot intermediate the ends thereof, one end of said rotatable actuating arm being pivotally connected to said movable contact carrier, and the other end of said rotatable actuating arm carrying one end of a tension spring, the other end of said tension spring connected to said movable contact carrier at a point removed from the pivotal connection of said movable contact carrier to said rotatable actuating arm, whereby rotary movement of said rotatable actuating arm tensions said tension spring and also changes the direction of the biasing force to effect first a rotation of the entire assembly and subsequently an elongation and straightening of the toggle comprising said movable contact carrier and said rotatable actuating arm, a cam plate fixedly secured to said rotatable actuating arm and having an interlocking cam surface, an operating rod responsive to the opening and closing movement of said contactor, and a rotatable interlocking arm pivotally connected to said operating rod so that when said contactor is closed, it is impossible to effect rotation of the cam plate and consequently rotation of the rotatable actuating arm.

Claim 9

The combination according to claim 6, wherein a handle mechanism is provided, and a handle linkage is pivotally connected to said rotatable actuating arm to effect the opening and closing rotative movements thereof.

Claim 10

The combination according to claim 6 wherein an electrical interlock switch is provided, and a plunger affixed to and movable with the movable contact carrier effects opening and closing of said interlock switch.

Claim 11

A switch assembly including a switch cabinet and a hinged door therefor, a switch interrupter having a switch mechanism disposed interiorly within said switch cabinet and having a generally horizontally-arranged switch operating rod (76) horizontally movable generally linearly to effect the opening and closing operations of said switch mechanism, a manually-operable handle assembly fixedly mounted to the front of the switch cabinet and rotatable in a generally vertical direction, said handle-assembly including a latching plate (78) movAble therewith, said generally horizontally arranged switch operating rod being pivotally connected off-center to said latching plate (78) for interrelating handle motion with the switch mechanism operation, means defining a rotatable latch-pin assembly (107, 87) fixedly mounted to the rear side of the switch cabinet and carrying a rotatable latch pin (87), said hinged door carrying a latch hook (95) cooperating with said rotatable latch pin (87) to effect latching of the door when said latch pin (87) is in its ''''down latching'''' position, biasing means for rotating the rotatable latch pin assembly (107, 87) to a releasing position with the latch pin (87) in its upper released position, and said generally horizontally arranged switch operating rod (76) forcing said latch pin (87) downwardly to its latched down position when the switch mechanism is closed.

Claim 12

A switch assembly including a switch cabinet and a hinged door therefor, a switch interrupter having a switch mechanism disposed interiorly within said switch cabinet and having a generally horizontally-arranged switch operating rod (76) horizontally movable generally linearly to effect the opening and closing operations of said switch mechanism, a manually-operable handle assembly fixedly mounted to the front of the switch cabinet and rotatable in a generally vertical direction, said handle-assembly including a latching plate (78) movAble therewith, said generally horizontally arranged switch operating rod being pivotally connected off-center to said latching plate (78) for interrelating handle motion with the switch mechanism operation, means defining a rotatable latch-pin assembly (107, 87) fixedly mounted to the rear side of the switch cabinet and carrying a rotatable latch pin (87), said hinged door carrying a latch hook (95) cooperating with said rotatable latch pin (87) to effect latching of the door when said latch pin (87) is in its ''''down latching'''' position, biasing means for rotating the rotatable latch pin assembly (107, 87) to a releasing position with the latch pin (87) in its upper released position, and said generally horizontally arranged switch operating rod (76) forcing said latch pin (87) downwardly to its latched down position when the switch mechanism is closed.