Abstract: A tube pump capable that prevents and minimizes torque variation in a drive motor regardless of the rotation direction of a rotor unit includes a casing in which a liquid-flowing tube is arranged; a drive motor provided with a driving shaft rotatable in forward and reverse directions; a rotor body; roller holders supported on the rotor body to swing with respect to the rotor body; pressing rollers rotatably supported on the roller holders to press the tube against an inner circumferential wall surface of the casing; and biasing units biasing the roller holders, when swung, to be returned to a pre-swing position. The roller holders are configured to swing with respect to the rotor body in a direction opposite to a rotation direction of the rotor body.

Abstract: In a centrifugal fan including a casing, a rotatable impeller disposed in the casing, a motor for driving the impeller, a control board for controlling the motor, and an ejection port for cooling air, a dust proof projection is formed to the casing to prevent invasion of dusts from the ejection port to the motor and the control board. With this simple arrangement, invasion of dusts to a coil portion and a control board of the motor can be reduced while suppressing a manufacturing cost. In this case, when the dust proof projection is disposed to a gap between the inner peripheral surface of a side wall of the casing and the outer peripheral surface of the impeller along the outer peripheral surface of the impeller in an arc-shape, a dust proof effect can be more improved.

Abstract: A game machine according to the present invention includes claws for holding a thing. The machine also includes an acquisition detector, a closing pivotal angle controller, a continuous play controller and a playable game computer. If a player has acquired nothing from the game machine in the last game, and the detector outputs an acquisition failure signal, the angle controller increases the closing pivotal angle of the claws. If the player has acquired a thing from the machine in the last game, and the detector outputs an acquisition success signal, the angle controller decreases the pivotal angle. If the play controller outputs a continuous play signal, the game computer increases the number of playable games.

Abstract: A game machine according to the present invention includes claws for holding a thing. The machine also includes an acquisition detecting means, a closing pivotal angle controlling means, a continuous play controlling means and a playable game computing means. If a player has acquired nothing from the game machine in the last game, and the detecting means outputs an acquisition failure signal, the angle controlling means increases the closing pivotal angle of the claws. If the player has acquired a thing from the machine in the last game, and the detecting means outputs an acquisition success signal, the angle controlling means decreases the pivotal angle. If the play controlling means outputs a continuous play signal, the game computing means increases the number of playable games.