Abstract: A device for selectively controlling illumination from a source that emits illumination along an optical path toward an output has an intensity control apparatus for selectively controlling the intensity of illumination at the output; a filter adapted to be selectively disposed in the optical path; and a unitary mechanical user input for controlling the intensity control apparatus and for, when the intensity is at a maximum, permitting selective disposition of the filter in the optical path.

Abstract: An optical connector for connecting an optical cable having a cylindrical endpiece to a light source has a structure having an interior bore with a longitudinal axis, a port for receiving an illuminating beam and another port for receiving the cylindrical endpiece. A channel is defined along the periphery of the bore in the structure. A generally circular shaped spring member is positioned in the channel. The inner diameter of the circular shape is slightly smaller than the outer diameter of the cylindrical endpiece, which allows the establishment of a secure, yet releasable, connection between the cylindrical endpiece and the spring member. If the person wearing the headset connected to the optical cable moves too far, the optical cable is released from the housing.

Abstract: A disposable lubricating container system including a disposable container, a carrier, a sealing unit and transfer tubes. The carrier rigidly attaches itself to an engine or other machine part and the container attaches to the carrier. The container mates with the carrier to securely hold the container while being easily removed or inserted into the carrier. The sealing unit attaches to a neck portion of the container and serves to provide a fluid transfer system for the lubricating oil or fuel/oil mixture from the container to the engine. Lubricating oil in the container is transfered to an existing oil reservoir, directly to engine components or other machine parts.