Abstract: A fuel injection valve has a collar-shaped stopper at the front of a plunger for restricting the plunger stroke between the stopper and the end of a guide pipe. The divergent conical surface or spherical surface is formed at the end of the guide pipe, a spherical surface which makes contact with the conical surface is formed at the opposite side of the stopper of the plunger to the ball, an automatic centering operation is performed at the stroke end of the plunger, thereby preventing the irregular wear of the ball valve and the seat surface to stabilize the performance for a long period of time.

Abstract: A pump utilizing a permanent magnet used for pumping fuel or lubricating oil without an electric power supply for an internal combustion engine or liquid fuel combustion equipment. This pump does not employ the conventional flexible membrane or diaphragm to pump fluid or liquid required to provide an exactly airtight construction, but utilizes a permanent magnet with high durability and inexpensive manufacturing cost for pumping liquid steadily.

Abstract: A lubricating oil pump comprising a first plunger having the stroke controllable by a first control cam means, and a second plunger connected integrally rotatably only in the rotating direction with the first plunger in order to form a pump chamber and having the stroke controllable by a second control cam means so that the delivery may be determined by taking two kinds of external conditions into consideration.