A door locking device of a distribution board of an air circuit breaker, including a transmission shaft transmitting power for drawing in and out a circuit breaker body, a shaft link rotatably coupled to one end of the transmission shaft, a link rod having one end rotatably coupled to a portion of the shaft link, a cam plate rotatably coupled to the other end of the link rod and pushing or pulling the circuit breaker boy, and a constraint plate installed in a distribution board door, further includes a pressing part protruding from a portion of the link road, and a hook plate rotatably coupled to a side of the cradle and having one end in contact with the pressing part to receive rotational force and the other end restricting or releasing the constraint plate, wherein the hook plate releases the constraint plate in a disconnection position.

An appliance includes a position switch retention device for use with an appliance including a body defining a generally cylindrical profile extending through a first portion thereof along an axis and having a first radius. The body further defines a pin-receiving channel open on at least a first end thereof and positioned within the generally cylindrical profile. The device further includes a first tab extending from a side of the body. The tab defines a ramp and an edge with the ramp extending away from the first end of the body to the edge. A cap extends outwardly from a second end of the body opposite the first end. The cap is spaced apart from the edge of the tab at a first distance and has a second radius greater than the first radius.

A device for locking an assembly includes an actuator having a first shape and a second shape, and a locking element. When the actuator has its first shape it moves the locking element into a blocking position in order to block the assembly, and when the actuator has its second shape, it moves the locking element into a release position in order to release the assembly. A system for locking different assemblies is also provided.

A protective guard prevents undesired access to a wall-mounted electrical interface such as an electrical switch or outlet, particularly by small children. The protective guard includes a baseplate, cover and spring-biased latch. The baseplate is mounted to the wall and contains at least one opening to expose the electrical interface. The cover slidably attaches to the baseplate for sliding movement between a closed position that blocks access to the electrical interface and an open position that exposes the electrical interface. The spring-biased latch is attached to the cover. The latch is actively spring-biased to a locked position that holds the cover in the closed position and has an unlocked position offset from the locked position which allows sliding movement of the cover to its open position to expose the electrical interface. Advantageously, exposing the electrical interface requires no additional parts or tools that should be procured, removed, stored, or could be misplaced. The required actions to expose the electrical interface are difficult to achieve by a small child while an adult has the required strength, motor skills, and cognitive abilities to easily and intuitively accomplish the necessary actions with a one-handed operation.

A locking device for a rocker switch that has an elongated member having a top edge, a bottom edge, opposite ends, a front facing surface and a rear facing surface. A toggle member is pivotally mounted to the front facing surface. The toggle member pivots between a first toggle position that extends below the bottom edge of the elongated member and a second toggle position that does not extend below the bottom edge. The rear facing surface of the elongated member is mounted to the switch plate cover, the bottom edge of the elongated member adjacent the first end of the rocker switch. When the first end of the rocker switch is pivoted to the first position the toggle may be pivoted to the first toggle position to extend below the lower edge of the elongated member to overlie the first end of the rocker switch to lock the rocker switch in the first position. The toggle may be pivoted to the second toggle position to unlock the rocker switch from the first position. A locking device may be provided for each end of the rocker switch. Locking devices built into the ends of the rocker switch are also described.

An appliance includes a position switch retention device for use with an appliance including a body defining a generally cylindrical profile extending through a first portion thereof along an axis and having a first radius. The body further defines a pin-receiving channel open on at least a first end thereof and positioned within the generally cylindrical profile. The device further includes a first tab extending from a side of the body. The tab defines a ramp and an edge with the ramp extending away from the first end of the body to the edge. A cap extends outwardly from a second end of the body opposite the first end. The cap is spaced apart from the edge of the tab at a first distance and has a second radius greater than the first radius.

A lockout device for securing a rotary circuit breaker switch is provided. The lockout device is provided in the form of an outer housing having a plurality of side walls extending away from a base wall to define a cavity and at least one of the side walls having a slot formed therein. The lockout device further includes an inner housing received within a portion of the cavity. The inner housing has a first component and a second component to receive the rotary circuit breaker switch therein. The lockout device has a biasing element positioned between the base wall and the inner housing to translate the inner housing axially relative to the outer housing, and a fastener with a thumbwheel having at least one projection designed to be positioned within the slot of the outer housing to hold the fastening mechanism and the lockout device in a locked position.

A system is provided for preventing a push-pull circuit breaker from being inadvertently depressed. The system may include a clip member having a generally C-shaped collar defining a cylindrical recess therein. The clip member is configured to resiliently expand to be positioned over and receive a cylindrical portion of the circuit breaker knob in a manner that prevents the circuit breaker knob from being depressed to close the circuit breaker. The system further includes first and second tabs depending from ends of the clip member. A cable tie may be positioned through openings formed in the first and second tabs to secure the first and second ends to each other, thereby locking the clip member in position on the push-pull circuit breaker knob and preventing the circuit breaker knob from being depressed.

The apparatus includes a shaft rotatable to a plurality of predetermined positions to change a state of an electric switching device, a motor rotating the shaft via a transmission mechanism when the apparatus operates in an electric operating mode, and a braking mechanism configured to brake the motor in response to the shaft rotated to each position. The apparatus also includes a disc coupled to, and rotatable with the shaft and including a plurality of blocking parts and slots therebetween and a manual lever including a rotatable part and a projecting part arranged at an end thereto. In an apparatus manual operating mode, the projecting part is rotatable into the disc via one of the slots when the shaft is located at one of the positions, and slides out from the disc via another slot when the shaft is rotated to another one of the positions.