Abstract: An assembly for use in an electrical power distribution system includes a housing that includes an interior space; an electrical apparatus in the interior space, the electrical apparatus including an electrical connection mechanism that is configured to move between at least two positions; an observation port through the housing, the observation port being configured to allow visual observation of the electrical connection mechanism in the interior space from an exterior of the housing; and an optical guide between the interior space and a light source. The light source is outside of the interior space and the optical guide is configured to deliver light from the light source to the interior space when the light source emits light.

Abstract: A resistor assembly can include a resistor having a first end and a second end, and a conductive member, where the conductive member is coupled to the first end of the resistor. The resistor assembly can also include a shield cup and a housing, where the housing includes at least one housing wall having at least one aperture, and where the housing encloses at least a portion of the resistor and at least a portion of the shield cup. A volume of space between the at least one housing wall of the housing and the resistor can be substantially filled with an insulating material and at least the outside of the housing is substantially covered with the insulating material.

Abstract: An assembly for use in an electrical power distribution system includes a housing that includes an interior space; an electrical apparatus in the interior space, the electrical apparatus including an electrical connection mechanism that is configured to move between at least two positions; an observation port through the housing, the observation port being configured to allow visual observation of the electrical connection mechanism in the interior space from an exterior of the housing; and an optical guide between the interior space and a light source. The light source is outside of the interior space and the optical guide is configured to deliver light from the light source to the interior space when the light source emits light.

Abstract: A resistor assembly can include a resistor having a first end and a second end, and a conductive member, where the conductive member is coupled to the first end of the resistor. The resistor assembly can also include a shield cup and a housing, where the housing includes at least one housing wall having at least one aperture, and where the housing encloses at least a portion of the resistor and at least a portion of the shield cup. A volume of space between the at least one housing wall of the housing and the resistor can be substantially filled with an insulating material and at least the outside of the housing is substantially covered with the insulating material.

Abstract: An insulated switchgear module is disclosed. In one example, the module comprises a vacuum interrupter, current exchange assembly, and end conductors disposed within an insulated housing. The insulated housing further comprises a tank containing an actuator mechanism for actuating the current exchange assembly. An insulating tray within the housing separates the vacuum interrupter from the components in the tank. The insulated tray has a shape that corresponds with the shape of the vacuum interrupter and the shape of the housing.

Abstract: An insulated switchgear module is disclosed. In one example, the module comprises a vacuum interrupter, current exchange assembly, and end conductors disposed within an insulated housing. The insulated housing further comprises a tank containing an actuator mechanism for actuating the current exchange assembly. An insulating tray within the housing separates the vacuum interrupter from the components in the tank. The insulated tray has a shape that corresponds with the shape of the vacuum interrupter and the shape of the housing.

Abstract: An infusion pump uses an improved shuttle mechanism to more reliably pump liquids in low volumes for medical and other purposes. The improved shuttle uses linear translation and wider, symmetric jaws to grasp infusate tubing and pump liquid infusate through the tubing. Adjustment of the linear motion allows a user to also adjust a pumping volume of the infusion pump. Other shuttles with wider jaws may also pump infusate using a rotary motion. In addition, more than one shuttle, such as two or three shuttles, may be used to approximate continuous pumping. A series of several smaller linear shuttles with sequential actuation may be used as a linear peristaltic pump for general peristaltic pump applications.

Abstract: An infusion pump uses an improved shuttle mechanism to more reliably pump liquids in low volumes for medical and other purposes. The improved shuttle uses linear translation and wider, symmetric jaws to grasp infusate tubing and pump liquid infusate through the tubing. Adjustment of the linear motion allows a user to also adjust a pumping volume of the infusion pump. Other shuttles with wider jaws may also pump infusate using a rotary motion. In addition, more than one shuttle, such as two or three shuttles, may be used to approximate continuous pumping. A series of several smaller linear shuttles with sequential actuation may be used as a linear peristaltic pump for general peristaltic pump applications.