Abstract: A power transmission device comprises: a pulley 1 pivotally arranged in a casing 9; a hub fixed to a rotary shaft 8; and a torque limiter, having a torque limiting function, for transmitting power between the pulley and the hub and shutting off the transmission of power by breaking a power transmission path in the case where an excessively heavy load is given to the power transmission device. The power transmission device further comprises: a cylindrical member 7 engaged with and fixed to the rotary shaft 8 so that the cylindrical member 7 can be contacted with a hub seating surface 4d; and a seating portion 9c for receiving the cylindrical member, formed in the casing, wherein a gap G is formed between a contact face 7e at the rear end of the cylindrical member and a contact face 9d of the seating portion 9c.

Abstract: A first principal plane faces a second principal plane of a p-type Ga N compound semiconductor that is in contact with an MQW luminescent layer. On the surface of the first principal plane, a first region made up of the p-type Ga N compound semiconductor including at least Ni is formed. On the surface of the first region, an electrode composed of an alloy including Ni and Aluminum is formed. On the electrode, a pad electrode for external connection consisting of Al or Au is formed.

Abstract: A power transmission device includes a pulley 1 and a hub 2 having an inner hub 21, a rubber damper 22 and an outer hub 23. A hub side engagement portion 24 formed of an elastic material and arranged either one, or both, of inner peripheral surface and outer peripheral surface of the outer hub engages with a pulley side engagement portion 12, arranged at a position corresponding to the outer hub, of the pulley in concavo-convex fitting to thereby constitute a torque transmission structure between the hub and the pulley. The hub side engagement portion and the pulley side engagement portion have a concavo-convex outer shape and mesh with each other.

Abstract: A controlled compressor apparatus enables a hybrid compressor in an idle-stopping vehicle to operate more efficiently when driven by a motor alone. The controlled compressor apparatus includes a compressor 110, included in a refrigeration circuit 200, of a variable volume type for compressing a refrigerant; a motor 120 powered by a battery 12 to operate; and a controller 130 for selecting the driving force provided either by the engine 10 or the motor 120 to drive the compressor 110 and control its discharge volume. The controller 130 causes the motor 120 to operate the compressor 110 such that the compressor 110 is turned on or off at a discharge volume of the compressor 110 that larger within a variable range than that required for operating the refrigeration circuit 200.

Abstract: A centrifugal ventilator fan, which has improved fan performance and lower noise. A first outlet angle, on an upstream end of the fan, is less than a second outlet angle. Additionally, the first outlet angle is equal to zero degrees or greater and five degrees or less, while the second outlet angle is equal to thirty degrees or greater and forty five degrees or less. Furthermore, a first inlet angle, on an upstream end, is greater than a second inlet angle, on the opposite end. The first inlet angle is equal to sixty-five degrees or greater and ninety degrees or less, and the second inlet angle is equal to fifty-five degrees or more and seventy-five degrees or less.

Abstract: A controlled compressor apparatus for idle-stopping vehicles that permits precise variable displacement control of a compressor and reduces power consumption when the compressor is motor-driven. The apparatus includes a battery-powered motor and a control unit for selecting the engine or the motor to drive the compressor and for controlling the displacement of the compressor. A current detector detects the magnitude of a current supplied to the motor. The control unit stores a relationship between the displacement and the current and controls the displacement based on the current detected by the current detector.

Abstract: A controlled compressor apparatus enables a hybrid compressor in an idle-stopping vehicle to operate more efficiently when driven by a motor alone. The controlled compressor apparatus includes a compressor 110, included in a refrigeration circuit 200, of a variable volume type for compressing a refrigerant; a motor 120 powered by a battery 12 to operate; and a controller 130 for selecting the driving force provided either by the engine 10 or the motor 120 to drive the compressor 110 and control its discharge volume. The controller 130 causes the motor 120 to operate the compressor 110 such that the compressor 110 is turned on or off at a discharge volume of the compressor 110 that larger within a variable range than that required for operating the refrigeration circuit 200.

Abstract: A centrifugal ventilator fan, which has improved fan performance and lower noise. A first outlet angle, on an upstream end of the fan, is less than a second outlet angle. Additionally, the first outlet angle is equal to zero degrees or greater and five degrees or less, while the second outlet angle is equal to thirty degrees or greater and forty five degrees or less. Furthermore, a first inlet angle, on an upstream end, is greater than a second inlet angle, on the opposite end. The first inlet angle is equal to sixty-five degrees or greater and ninety degrees or less, and the second inlet angle is equal to fifty-five degrees or more and seventy-five degrees or less.

Abstract: A controlled compressor apparatus for idle-stopping vehicles that permits precise variable displacement control of a compressor and reduces power consumption when the compressor is motor-driven. The apparatus includes a battery-powered motor and a control unit for selecting the engine or the motor to drive the compressor and for controlling the displacement of the compressor. A current detector detects the magnitude of a current supplied to the motor. The control unit stores a relationship between the displacement and the current and controls the displacement based on the current detected by the current detector.