Abstract: A pump which has a diaphragm main body integrally connected at a planar portion to a diaphragm portion forming a pump chamber and performs a pumping action by reciprocating a driving portion disposed integrally with the diaphragm portion; the pump being configured compact by disposing a suction valve at the planar portion of the diaphragm main body and further using a planar discharge valve.

Abstract: A pump which has a diaphragm main body integrally connected at a planar portion to a diaphragm portion forming a pump chamber and performs a pumping action by reciprocating a driving portion disposed integrally with the diaphragm portion; the pump being configured compact by disposing a suction valve at the planar portion of the diaphragm main body and further using a planar discharge valve.

Abstract: A pump which has a diaphragm main body integrally connected at a planar portion to a diaphragm portion forming a pump chamber and performs a pumping action by reciprocating a driving portion disposed integrally with the diaphragm portion; the pump being configured compact by disposing a suction valve at the planar portion of the diaphragm main body and further using a planar discharge valve.

Abstract: A pump which has a diaphragm main body integrally connected at a planar portion to a diaphragm portion forming a pump chamber and performs a pumping action by reciprocating a driving portion disposed integrally with the diaphragm portion; the pump being configured compact by disposing a suction valve at the planar portion of the diaphragm main body and further using a planar discharge valve.

Abstract: A miniature motor unit comprising a motor mounting member attached to an output side end of an outer casing of a motor, and configured to combine and fix the outer casing with and to the motor mounting member by forming mounting holes having fixing claws in the output shaft side end of the outer casing, forming bosses on the motor mounting member at locations corresponding to the mounting holes and pressing the bosses into the mounting holes.

Abstract: A compact pump composed by combining a cylinder into which a diaphragm portion is to be inserted, a case which accommodates a driving portion for driving the diaphragm portion and a valve housing, and clamping and fixing a combination of the members with a spring.

Abstract: An impeller pump which can be connected for use with hot-water serving systems. By the rotation of an impeller, liquids are sucked through a suction port which is connected with a container of the hot-water serving system and discharged through a discharge port for the intended supply. A guide port is provided nearby the suction port to let escape bubbles from the pump chamber, thereby assuring that the hot-water supply capacity performance is kept constant.

Abstract: A small-sized pump comprising a common valve chamber, a plural number of pump chambers respectively arranged round the common valve chamber and each having a diaphragm, a drive member provided in the inclined state and serving to move the diaphragms upward and downward, and a tubular supporting member extending obliquely downward from the central portion of the drive member, the small-sized pump being arranged to make the end of the tubular supporting member perform circular motion and to thereby drive the drive member so as to move the diaphragms upward and downward so that respective pump chambers perform pumping actions with a predetermined time lag, the small-sized pump being thereby arranged to have high pumping efficiency.