Abstract: An aeration nozzle is provided, having on one end an air supply port (16a) connected to an aeration pump (13) and a waste water suction port (17) for suctioning waste water in a processing tank (3, 4), and having a micro-bubble generation unit (18), provided facing the air supply port, for mixing air supplied by the air supply port and waste water suctioned from the waste water suction port and generating micro-bubbles (9), wherein a plurality of blades of cylindrical micro-bubble generators (19) included in the micro-bubble generation unit (18) is configured such that tip ends of the blades are formed so as to face one another around the center of the cylindrical micro-bubble generators (19a, 19b); and by being formed from an elastic member (such as rubber), the tip ends of the blades are configured so as to bend with the base ends as starting points.

Abstract: An aeration nozzle is provided, having on one end an air supply port (16a) connected to an aeration pump (13) and a waste water suction port (17) for suctioning waste water in a processing tank (3, 4), and having a micro-bubble generation unit (18), provided facing the air supply port, for mixing air supplied by the air supply port and waste water suctioned from the waste water suction port and generating micro-bubbles (9), wherein a plurality of blades of cylindrical micro-bubble generators (19) included in the micro-bubble generation unit (18) is configured such that tip ends of the blades are formed so as to face one another around the center of the cylindrical micro-bubble generators (19a, 19b); and by being formed from an elastic member (such as rubber), the tip ends of the blades are configured so as to bend with the base ends as starting points.

Abstract: A bubble generating system is provided for use with a gas supply and a container having liquid therein. The gas supply can supply a flow of gas. The bubble generating system includes a gas provider, a first bubble generator and a second bubble generator. The gas provider has an input port, a first output port and a second output port, wherein input portion can connect to the gas supply. Each bubble generator has an inlet and an outlet and is connected to the gas provider. The first bubble generator is arranged to output the first portion of the flow of gas in a first direction. The second bubble generator is arranged to output the second portion of the flow of gas in a second direction, wherein the first direction is different from the second direction.

Abstract: A barrel for a writing implement includes a barrel body having a gripping part, and a grip member of layered structure formed by assembling an inner member of a soft material and an outer member, and is put on the gripping part of the barrel body. The inner member is covered with the outer member, and at least one of the outside surface of the inner member and the inside surface of the outer member is formed in an assembly facilitating shape for facilitating putting the outer member on the inner member.

Abstract: A barrel for a writing implement includes: a barrel body having a gripping part, and a grip member of layered structure formed by assembling an inner member of a soft material and an outer member, and put on the gripping part of the barrel body. The inner member is covered with the outer member, and at least either of the outside surface of the inner member and the inside surface of the outer member is formed in an assembly facilitating shape for facilitating putting the outer member on the inner member.

Abstract: This invention provides a handle for a tooth cleaning member convenient for use in which the angle of the tooth cleaning member can be easily adjusted for cleaning teeth only by controlling the force for grasping the grip part. The handle comprises a support portion made of an elastic material, and a pressed portion shorter than the support portion. When the pressed portion is pressed against the support portion, the support portion is transformed to increase its curvature.