Abstract: A power controller generates an audible and/or visual signal corresponding to a change in output power of the power controller in response to a user input. The change in output power is limited to a single discrete step in accordance with a discrete user input. In an embodiment, the user input device is a touch-plate, and the change in output power is limited to a single discrete step with each touch of the touch-plate.

Abstract: A modular toggle mechanism assembly has a housing assembly, a toggle handle pivotally mounted in the housing assembly and movable between a first position and a second position, biasing means for selectively biasing the toggle handle in the first position or the second position, and an actuator arm connected to the toggle handle and capable of selectively actuating an external switching device as a function of the position of the toggle handle. The modular toggle assembly also includes an external switching device in selective association with the toggle handle. The housing assembly includes an upper housing and a lower housing configured to be secured together, wherein a portion of the toggle handle extends from an opening in the upper housing for user operation of the handle.

Abstract: A system for separating particulate solids and condensable vapor materials from a hot feed gas stream such as a fuel gas containing such materials, so as to provide a clean gas product stream. The system includes a cyclone-type separator in which coarser particulate solids are removed downwardly, and an overhead gas stream containing a reduced concentration of finer particles is passed through a cooling step such as a heat exchanger for solidification and removal of condensable materials, and then passed to a filter vessel. In the filter vessel, the cooled gas and solidified particles pass through a filtering surface for further removal of the finer particles and solidified materials, after which the cleaned product gas is removed through an upper outlet connection.