Abstract: An integrally molded housing having outwardly directed, spaced-apart arms thereon for mounting within or attachment to a panel is disclosed. The arms are located on the body portion of the housing such that a distance slightly less than the thickness of the panel in which the housing is to be received exists between the end of each arm and a circumferential flanged surface on the housing. As the housing is being received through the panel, the arms are deflected inwardly and then spring outwardly causing a surface on the end of each arm to engage a surface on a complementary keyway in the panel. Another surface is provided on the end of each arm to prevent the disengagement of the arm from the surface surrounding its adjacent complementary keyway upon longitudinal movement of the housing toward the panel. The housing can be readily removed from the panel by the application of inwardly directed pressure on the arms.

Abstract: A gas collector electrode assembly that can be easily assembled and/or disassembled is disclosed. The bottom wall of the gas collector includes two apertures connected by an elongated slot. The first aperture is sized to receive the end of the spark electrode assembly and the second aperture is sized to grippingly engage a circumferential groove on the spark electrode assembly adjacent its end. A tab portion is provided in the bottom wall of the gas collector adjacent the second aperture therein. By inserting the end of the spark electrode assembly into the first aperture and then by depressing the tab portion while laterally moving the spark electrode assembly into the second aperture, the tab portion can then spring back to its original position and grippingly engage the spark electrode assembly firmly attaching same to the gas collector.