Abstract: An over-center handle mechanism is provided to operate electrical equipment, such as a switch or breaker, housed in an electrical enclosure. The over-center handle mechanism includes an adaptor knob, a rotary actuator and a spring. The adaptor knob interfaces with the electrical equipment. The rotary actuator is connected to the adaptor knob, and includes a cam. A through-door handle is used to operate the rotary actuator, which in turn operates the electrical equipment via the adaptor knob. To optimize an angular torque feeling at the through-door handle, the over-center handle mechanism further includes the spring to provide an opposing force against movement of the cam of the rotary actuator, and thus, the through-door handle. A solid lubricant of PTFE may also be provided as an interface between the cam and the spring to reduce friction therebetween.

Abstract: An over-center handle mechanism is provided to operate electrical equipment, such as a switch or breaker, housed in an electrical enclosure. The over-center handle mechanism includes an adaptor knob, a rotary actuator and a spring. The adaptor knob interfaces with the electrical equipment. The rotary actuator is connected to the adaptor knob, and includes a cam. A through-door handle is used to operate the rotary actuator, which in turn operates the electrical equipment via the adaptor knob. To optimize an angular torque feeling at the through-door handle, the over-center handle mechanism further includes the spring to provide an opposing force against movement of the cam of the rotary actuator, and thus, the through-door handle. A solid lubricant of PTFE may also be provided as an interface between the cam and the spring to reduce friction therebetween.

Abstract: An linear motion compensator for translating a particular amount of linear movement produced by an input device into a particular amount of linear movement required to properly operate an output device, without causing damage to either the input device or the output device.

Abstract: A bi-directional torque-limiting interface for rotary operating devices is shown and described. The interface includes a first section receiving torque from a source, a second section delivering the received torque to a rotary operating device and a coupler operably connecting the first and second sections. The coupler is preloaded to a predetermined value and maintains a particular angular relationship between the first and second sections under normal operating conditions.

Abstract: A bi-directional torque-limiting interface for rotary operating devices is shown and described. The interface includes a first section receiving torque from a source, a second section delivering the received torque to a rotary operating device and a coupler operably connecting the first and second sections. The coupler is preloaded to a predetermined value and maintains a particular angular relationship between the first and second sections under normal operating conditions.

Abstract: An indexing ring providing automatic continuity between metallic parts of an operator interface device and a support panel in which the operator interface device is mounted. Continuity between the operator interface device and support panel is automatically provided by a continuity rib integrally formed from the indexing feature of an indexing ring. The indexing ring is installed between the operator interface device and the support panel to ensure the relative position of the operator interface device with the support panel. As the indexing feature of the indexing ring is slidably received within the indexing features of the support panel and operator interface device a generally sharp distal edge of the continuity rib will cut through any corrosion protection, such as paint, which might be covering the support panel. Thus, a metal-to-metal connection providing electrical continuity is automatically established and maintained between the operator interface device, indexing ring and the support panel.