Abstract: There is provided a motor control apparatus illuminating a character or a graduation of a switch setting portion (3) when an operator sets the switch setting portion (3), capable of facilitating to set and preventing erroneous setting by promoting an optical recognizability and capable of achieving small-sized formation. A motor control apparatus includes light illuminating portions (11a), (11b) for illuminating the switch setting portion (3), a light illumination drive portion for driving the light illuminating portions (11a), (11b) and a control portion for controlling to drive and stop the light illumination drive portion for turning on and turning off the light illuminating portions (11a), (11b) based on a change in a set value of the switch setting portion (3).

Abstract: A metal gasket is disclosed in which a shim laid on a bead plate around bore apertures in the bead plate is varied in radial width along the peripheries of the bore apertures to compensate for sealing stress circumferentially of the bore apertures. The metal gasket is composed of a bead plate with beads around its bore apertures and a shim including annular areas defining bore apertures and bridges connecting together any two adjoining annular areas. The shim around the bore apertures has a radial width at the bridges, which is substantially equal with a width across a web defined between any adjoining cylinder bores formed in mating surfaces of the cylinder block and cylinder head. Moreover, the shim at areas other than the bridges is varied continuously in its radial width in a range of from a flat area around the bore apertures to an area corresponding to the bead on the bead plate.

Abstract: A monolayer metal gasket is disclosed in which variations in radial width of a core plate around bore apertures help regulate a sealing stress throughout around bore apertures. The monolayer metal gasket is comprised of a core plate extending around the bore apertures and a perimetral member surrounding throughout the core plate. The core plate is varied in its own radial width circumferentially of every bore aperture in such a manner as to become narrow at areas neighboring tightening holes while wide at the remainder. In this monolayer metal gasket, the sealing stress around the bore apertures may be compensated in part by varying the radial width of the core plate circumferentially of every bore aperture.

Abstract: A structure for finding wrong assemblage of the metallic laminate type gasket according to the present invention is composed of a plurality of component sheets overlapping each other, in which small holes for finding wrong assemblage in number one less than the number of sheets to be laminated are bored on each sheet at a part so that, unless any one of the sheets is absent, the small holes are prevented from joining in line like one through hole, whereby whether lamination of the sheets is as complete as designed or not can be confirmed and, when any one of the sheets is absent and small holes join in line like one through hole to pierce through all sheets, wrong assemblage can be confirmed by mechanical or electrical means.