Abstract: A motor drives a fan that creates airflow in an air conditioning system. The motor includes a cup-shaped motor holder and a yoke received inside of the motor holder. The motor holder has a peripheral wall and an open end at one end of the peripheral wall. The yoke has an open end adjacent to the open end of the motor holder. The open end of the yoke has a flange that extends radially outwardly. An outer peripheral end of the flange is positioned radially outward of the peripheral wall of the motor holder.

Abstract: The present invention provides a virus capable of specifically infecting and growing within a member of algae Heterocapsa sp. A method for isolating the above virus comprises a process of: filtrating with a filter a liquid sample containing a member of algae Heterocapsa sp. infected with a virus capable of specifically infecting and growing within said Heterocapsa sp.; inoculating the obtained filtrate into a culture solution of a member of algae Heterocapsa sp. and culturing; and cloning the above virus by performing a limiting dilution for a culture solution wherein said Heterocapsa sp. is observed to be lysed. The present invention provides an agent for preventing red tide, which comprises, as an active ingredient, the above virus. Furthermore, the present invention provides a method for preventing red tide, which comprises dispersing the above virus in red tide fouled-waters.

Abstract: A motor drives a fan that creates airflow in an air conditioning system. The motor includes a cup-shaped motor holder and a yoke received inside of the motor holder. The motor holder has a peripheral wall and an open end at one end of the peripheral wall. The yoke has an open end adjacent to the open end of the motor holder. The open end of the yoke has a flange that extends radially outwardly. An outer peripheral end of the flange is positioned radially outward of the peripheral wall of the motor holder.

Abstract: A brushless motor for a vehicle air conditioner has a motor holder having an accommodation portion, a stator having a center piece fastened to a bottom of the accommodation portion and a core on which a winding is wound, and an exciting circuit disposed below the bottom to supply an exciting current to the winding. A terminal of the exciting circuit is upwardly extended to an upper side of the core through a through hole formed in the bottom and a terminal accommodation hole formed in the center piece to be connected to the winding. Liquid having entered the accommodation portion is restricted from falling through the through hole of the bottom by an O-ring disposed to surround the through hole and is drained through a drain opening formed in the bottom. As a result, a connection portion between the terminal and the winding and the exciting circuit are restricted from making contact with liquid.

Abstract: The present invention provides a virus targeting red tide-causing plankton Heterocapsa; a method and an agent for preventing red tide using the virus; a method for isolating the virus; and a method for subculturing the virus.

Abstract: An electric power unit is composed of a secondary battery, a cooling fan, a fan motor and a case for the secondary battery, the cooling fan and the fan motor. The case has a partition for isolating the fan motor from the secondary battery and cooling fan. A magnetic joint is disposed between the motor and the cooling fan.

Abstract: A brushless motor includes motor holder having a plate, a stator attached to the plate and a rotor having a rotary shaft. The rotary shaft has a lower end that protrudes from the stator. A sensor magnet is located near the lower end of the rotary shaft. The plate has a through hole through which the sensor magnet passes. This structure allows a unit including the stator, the rotor and the sensor magnet to be pre-assembled. The unit is then secured to the motor holder. This permits a set of standardized parts to be attached to a non-standard part in one step, which makes assembly more efficient.

Abstract: A brushless motor includes a stator attached to a motor case and a rotor. A circuit substrate is attached to the motor case. The substrate includes an electric circuit, which supplies electric current to the stator thereby rotating the rotor. A fan generates and moves air in accordance with rotation of the rotor. A duct guides some of the air moved by the fan to the stator. A flange extends from the stator. The air guided by the duct flows along the flange. This structure reduces the size of the brushless motor while increasing its power.

Abstract: A brush structure for a motor is provided for realizing an equalization of wear of brushes without causing an early wear of a specific brush while not necessitating a complicated conduction controlling device. A first brush, which is one of four brushes, conducted at both Lo mode and Me mode is formed to have a larger sliding contact area for contacting a commutator slidably compared with a sliding contact area of a second brush which is conducted at Hi mode only. Current density in the first brush at Lo mode and Me mode becomes smaller than current density at Hi mode.

Abstract: A brush apparatus for a rotary electric machine has a brush with a pigtail, a brush holder and a spring. The brush holder is formed with a slit and a stopper piece. The pigtail is passed through the slit when the brush is inserted into the brush holder, and thereafter the stopper piece is bent to close an opening the slit. Thus, the brush apparatus simplifies an inserting operation of the brush to the brush holder and prevents the brush and the spring from coming off due to wear of the brush.

Abstract: A method and apparatus for coating insulating materials onto the outer surface of an armature of an electric motor whereby insulating material is inhibited from being coated on a commutator and a driving shaft associated with the armature by covering the commutator and a portion of the driving shaft with a cap and directing an air flow through a gap formed between the cap and the commutator and the driving shaft such that air is discharged near a boundary between a commutator base and the armature, thus preventing insulating material from entering the gap and coating the commutator or the portion of the driving shaft.

Abstract: The present invention offers a retaining structure of a brush spring of an electric motor, whereby a brush spring is allowed to be mounted in a normal direction only, thus avoiding abrasion of a brush or unexpected halt of the electric motor.