Abstract: A sense amplifier circuit comprises a first amplifier circuit for detecting the data from a memory cell and generating an output signal in accordance with the detected data, a first load MOS transistor of one conductivity type connected between an output terminal of the first amplifier circuit and a power source terminal, a second amplifier circuit for detecting the data from a dummy cell and generating an output signal in accordance with the detected data, a second load MOS transistor of one conductivity type and a third load MOS transistor, which are connected in parallel between an output terminal of the second amplifier circuit and the power source terminal, and a comparator for comparing the output signals from the first and second amplifier circuits and generating an output signal in accordance with the result of the comparison. The third load MOS transistor is a MOS transistor of an opposite conductivity type whose back gate is connected to a reference potential terminal.

Abstract: A connecting member, preferably in the form of a bolt, is mounted in a wall portion of the pump housing of a fuel injection pump, which defines therein a chamber in which component parts to be lubricated are accommodated, or a space communicating therewith, and which connects the tail end of a lubricating oil feeding pipe to the pump housing. The connecting member has a cylinder bore within which a piston is received with a predetermined small clearance between the cylinder bore and the piston and which communicates with the above chamber or space. The piston is moved in response to a change in the relationship between the pressure of lubricating oil acting upon the piston and the urging force of a spring urging the piston against the oil pressure, to prevent clogging of the above clearance with sludge or the like present in the lubricating oil.