There is included an inorganic insulating film having a porous structure including a cylindrical vacancy oriented in parallel with the surface of a substrate subjected to a hydrophilic treatment or a hydrophobic treatment. The pipe-like transporting path, through which a developer is transported, has an discharge port at part of its side surface. Use of the backing makes it possible to dispense with connecting cross-pieces between the island and the front instrument panel. The bleed system is applied in a runaway control for an air motor which shuts off the motor when its speed exceeds a predetermined cut-off speed. Usage of rare earth magnets assures that the linear electric motor generates enough force to properly and timely operate the engine valve The electric motor may alternatively drive a threaded portion of the valve stem Operation of the electric motor threads the threaded valve stem relative to a threaded support to drive the engine valve between an open and a closed position. The seat divider extension is comprised of two lower, vertically extending portions that are attached to a connecting portion from which the lower portions vertically extend, and an upper, vertically extending portion that is attached to the connecting portion and from which the upper portion vertically extends.