Abstract: A fuel injection system permits the use of hydraulic control oil as a pressure transmitting medium and enables reliable valve opening and closing performance regardless of operating environment. The housing of the fuel injection system is constituted by a valve main body and a cylinder main body, the flowing channel of fuel being airtightly separated from a pressure control chamber. The cylinder main body incorporates a piezoelectric element, which changes the fluid pressure of the pressure transmitting medium in the pressure control chamber, a piston, and a cylinder having an inflow/outflow hole. A needle valve is installed, penetrating the cylinder main body so that the distal end thereof is located in a needle guide cavity of the valve main body and the other end thereof is located in the cylinder.

Abstract: An electronic information equipment is constructed to accommodate a keyboard (4) sandwiched between a main body (1) and a display (2). The keyboard (4) is provided separably from the main body (1). The display (2) is attached to the main body (1) by a supporting device (3) at a position where the display face (2a) is movable to a predetermined position. The supporting device (3) comprises rotating device portions (9, 10) and tilting device portions (15, 16, 17). The rotating device portions (9, 10) rotate the display (2) in the horizontal direction (H) about an axis intersecting the installation plane. The tilting device portions (15, 16, 17) rotate the display (2) at a vertical direction (V) with respect to the main body (1) for supporting the display face (2a) at a position intersecting the installation face at an arbitrary angle. The necessity to place the main body (1) in front of the operator is eliminated resulting in a wide and effective usage of the desk employed as an installation plane.