Abstract: A control valve according to an embodiment includes a body having a valve hole and a guiding passage formed coaxially with the valve hole, an actuating rod, slidably supported along the guiding passage, which is provided with a valve element, a solenoid for applying the solenoidal force in an opening or closing direction of a valve section to the valve element via the actuating rod, and a seal section, provided between the actuating rod and the guiding passage, which houses a sealing member for restricting the leakage of refrigerant from a high pressure side to a low pressure side. The actuating rod and the guiding passage are configured such that the clearance, between the actuating rod and the guiding passage, which is at a higher-pressure side of the seal section is larger than the clearance which is at a lower-pressure side of the seal section.

Abstract: A control valve includes: a body having a port communicating with a discharge chamber, a port communicating with a control chamber, and a main valve hole formed in a passage connecting the ports; a main valve element configured to close and open a valve section by moving toward and away from the main valve hole; a solenoid configured to generate a force for driving the main valve element in valve opening and closing directions of the valve section, power supply to the solenoid being controlled according to pulse width modulation (PWM); and a vibration absorbing structure including a spring connected with a plunger configured to be displaced integrally with the main valve element, and a weight connected with the plunger with the spring therebetween in a relatively displaceable manner, and configured to suppress vibration of the main valve element caused by the PWM control.

Abstract: A control valve according to an embodiment includes a body having a valve hole and a guiding passage formed coaxially with the valve hole, an actuating rod, slidably supported along the guiding passage, which is provided with a valve element, a solenoid for applying the solenoidal force in an opening or closing direction of a valve section to the valve element via the actuating rod, and a seal section, provided between the actuating rod and the guiding passage, which houses a sealing member for restricting the leakage of refrigerant from a high pressure side to a low pressure side. The actuating rod and the guiding passage are configured such that the clearance, between the actuating rod and the guiding passage, which is at a higher-pressure side of the seal section is larger than the clearance which is at a lower-pressure side of the seal section.

Abstract: A universal joint yoke includes: a cylindrical portion for fixing a shaft; a slit that is formed in the cylindrical portion and that extends from one end of the cylindrical portion in an axial direction of the cylindrical portion, which is a first direction; a reinforcement flange that extends from the other end of the cylindrical portion radially outward with respect to the cylindrical portion; and a pair of arms that extend from the reinforcement flange on a side opposite to a side on which the cylindrical portion is provided and that are swingably coupled to another yoke via a coupling shaft.

Abstract: A universal joint yoke includes: a cylindrical portion for fixing a shaft; a slit that is formed in the cylindrical portion and that extends from one end of the cylindrical portion in an axial direction of the cylindrical portion, which is a first direction; a reinforcement flange that extends from the other end of the cylindrical portion radially outward with respect to the cylindrical portion; and a pair of arms that extend from the reinforcement flange on a side opposite to a side on which the cylindrical portion is provided and that are swingably coupled to another yoke via a coupling shaft.

Abstract: A universal joint including an intermediate joint member having a spherical portion as assembled and four ridges formed on the outer surface of the spherical portion and defining four guide furrows therebetween, and two shaft each having one end bifurcating into two arms. The two arms of one of the shafts are fitted in two of the guide furrows positioned symmetrically, and the two arms of the other shaft are fitted in the other two guide furrows positioned symmetrically. The entire joint member comprises two divided half segments arranged in combination axially of the member.

Abstract: A water-in-oil emulsion explosive, comprising aqueous inorganic oxidizer solution, oil, emulsifier and hollow microspheres, and having high low-temperature detonability and storage stability can be produced without causing breakage of the hollow microspheres through a specifically limited kneading method, wherein agitating blades fitted to an agitating shaft in a kneader are subjected to up and down movements in the axial directions of the agitating shaft and concurrently to a rotary motion to knead homogeneously a water-in-oil emulsion formed of the aqueous solution of inorganic oxidizer, oil and emulsifier, together with the hollow microspheres.

Abstract: A method of producing water-in-oil emulsion explosive by carrying out emulsification and kneading of a raw material mixture in one step is disclosed. In the method, hollow microspheres and a mixture of an aqueous solution of inorganic oxidizer, an oil and an emulsifier are separately supplied into a common passage of an emulsifying and kneading machine; the hollow microspheres and the mixture are emulsified and kneaded on the surface of a disc arranged on the downstream side of the disc, while rotating the disc; the emulsified and kneaded mixture is flowed down from the outer peripheral portion of the disc into a kneading room formed under the disc, while continuing the emulsification and kneading; the emulsified and kneaded mixture is fully emulsified and kneaded in the kneading room; and then the resulting water-in-oil emulsion explosive is taken out from the kneading room.