Abstract: A disk device includes a magnetic disk, a magnetic head, a flexible printed circuit board, an electronic component, and a wall. The flexible printed circuit board is electrically connected to the magnetic head. The electronic component is mounted on the flexible printed circuit board. The wall has rigidity higher than the flexible printed circuit board and is attached to the flexible printed circuit board. The flexible printed circuit board with a first through hole includes a first surface facing the electronic component with a gap, and a second surface opposite the first surface and facing the wall, the first through hole being open to the first surface and the second surface to communicate with the gap. The wall is provided with a second through hole penetrating the wall to communicate with the first through hole.

Abstract: Provided is a vehicular refrigerating cycle comprising a compressor, which uses carbon dioxide refrigerant and which has a displacement control valve capable of controlling a displacement in response to an external signal. The vehicular refrigerating cycle comprises a falling-off preventing means for stopping a movement of the displacement control valve in a direction in which the displacement control valve comes out of its mounting position on the compressor, disposed at a portion which is positioned in the direction for the displacement control valve to come out of its mounting position on the compressor and positioned on this side of a position for the displacement control valve to completely fall off from the compressor. The displacement control valve can be prevented from exerting unpreferred influences upon the environment, even if the displacement control valve being mounted on the compressor should become so unfixed for some reason as could pop out of the compressor.

Abstract: An electromagnetic clutch comprises: a drive shaft of a compressor in an air conditioner for a vehicle in which a combustible refrigerant or a CO2 refrigerant circulates; a rotor which is rotated about the drive shaft by receiving a motive power from an engine or a motor of the vehicle; and a torque limiter connected to an armature disposed so as to face the rotor through an elastic member, the torque limiter being rotated integrally with the drive shaft, in which the torque limiter includes a transmission cutting-off portion for, when the state of a lock is caused in the drive shaft, perfectly separating the armature side from the drive shaft side, and for, unless the lock state is released, prohibiting the connection between the armature side and the drive shaft side from being recovered.

Abstract: An evaporator placed in a vehicle compartment includes a meandering flattened pipe, a header joined with one end of the flattened pipe for introducing a compressed refrigerant from a compressor placed in an engine room, and a header joined with the other end of the flattened pipe for discharging the refrigerant toward the compressor, wherein both headers are located in the engine room.

Abstract: It is an object of the invention to provide a refrigeration cycle which uses HFC-152a as refrigerant, and can be operated stably without hunting of the superheat degree. A charge amount of refrigerant is increased, and refrigerant at an inlet of an expansion device is placed in a state where the subcool degree is ensured to be at least 5 degrees such that the subcool degree does not become equal to zero by variation in pressure. This suppresses fluctuation in the superheat degree of refrigerant at an outlet of an evaporator to thereby stabilize the system. In this state, to enhance the efficiency of a compressor, the superheat degree can be increased by decreasing the set value of the expansion device.

Abstract: An electromagnetic clutch comprises: a drive shaft of a compressor in an air conditioner for a vehicle in which a combustible refrigerant or a CO2 refrigerant circulates; a rotor which is rotated about the drive shaft by receiving a motive power from an engine or a motor of the vehicle; and a torque limiter connected to an armature disposed so as to face the rotor through an elastic member, the torque limiter being rotated integrally with the drive shaft, in which the torque limiter includes a transmission cutting-off portion for, when the state of a lock is caused in the drive shaft, perfectly separating the armature side from the drive shaft side, and for, unless the lock state is released, prohibiting the connection between the armature side and the drive shaft side from being recovered.

Abstract: An evaporator placed in a vehicle compartment includes a meandering flattened pipe, a header joined with one end of the flattened pipe for introducing a compressed refrigerant from a compressor placed in an engine room, and a header joined with the other end of the flattened pipe for discharging the refrigerant toward the compressor, wherein both headers are located in the engine room.

Abstract: It is an object of the invention to provide a refrigeration cycle which uses HFC-152a as refrigerant, and can be operated stably without hunting of the superheat degree. A charge amount of refrigerant is increased, and refrigerant at an inlet of an expansion device is placed in a state where the subcool degree is ensured to be at least 5 degrees such that the subcool degree does not become equal to zero by variation in pressure. This suppresses fluctuation in the superheat degree of refrigerant at an outlet of an evaporator to thereby stabilize the system. In this state, to enhance the efficiency of a compressor, the superheat degree can be increased by decreasing the set value of the expansion device.

Abstract: A swash type compressor includes sleeves which are fixedly fitted in cylinder bores. The lengths of the sleeves in an axial direction are greater than the lengths of the cylinder bores in the axial direction. A sleeve end of each of the sleeves is flush with an end surface of a cylinder block defining the cylinder bores. The opposite sleeve end of the sleeve extends beyond the cylinder bore and away from the opposite end surface of the cylinder block.

Abstract: A piston compressor includes single-headed pistons individually received for reciprocal linear motion in cylinder bores, and is arranged to suppress the wear of these pistons with simple machining for wear prevention. The single-headed piston includes a first piston portion disposed in close contact with the cylinder bore, for sucking refrigerant thereinto and compressing the refrigerant, and a second piston portion adjacently formed in a crankcase-side end of the first piston portion and having a diameter smaller than that of the first piston portion, so as to be prevented from being in contact with the cylinder bore, or so as to apply, even if in contact therewith, a small thrust force to the cylinder bore.

Abstract: In a swash-plate compressor for compressing a fluid, the compressor includes a cylinder block having a cylinder bore and a piston having a first end portion reciprocally movable in the cylinder bore and a second end portion opposite to the first end portion. The second end portion has a pair of engaging portions faced to each other with a space left therebetween and a side wall portion connecting the engaging portions to each other. The compressor further includes a swash plate having a part inserted between the engaging portions and driven to rotate and a pair of sliding members interposed between the engaging portions and the swash plate, respectively. Each of the sliding members has a flat portion slidably contacted with the swash plate and a spherical portion opposite to the flat portion. Each of the engaging portions has a contact surface slidably contacted with the spherical portion. Each of the contact surfaces extends to the side wall portion.

Abstract: In a compressor having a cylinder head defining a refrigerant suction chamber and a refrigerant discharge chamber, the cylinder head is provided with a space located between the refrigerant suction chamber and the refrigerant discharge chamber. The cylinder head is disposed at one end of a compressor housing so that each of the refrigerant suction chamber and the refrigerant discharge chamber communicates with a plurality of cylinder bores disposed within the compressor housing and spaced from one another in a circumferential direction. In each cylinder bore, a piston reciprocally movable is disposed.

Abstract: A swash type compressor includes sleeves which are fixedly fitted in cylinder bores. The lengths of the sleeves in an axial direction are greater than the lengths of the cylinder bores in the axial direction. A sleeve end of each of the sleeves is flush with an end surface of a cylinder block defining the cylinder bores. The opposite sleeve end of the sleeve extends beyond the cylinder bore and away from the opposite end surface of the cylinder block.

Abstract: A refrigerant compressor includes a cylinder block, a front housing, and a sealing member. The cylinder block has a cylindrical portion. The cylindrical portion has an internal thread formed on an end thereof. The front housing having an external thread engages the internal thread. The front housing is fixed to the cylinder block and forms a crank chamber with the cylinder block. The pressure capacity of the refrigerant compressor may be increased without an increase in the size of the compressor.

Abstract: In a refrigerating system using a given refrigerant, a compressor (1) contains lubricating oil and compresses the given refrigerant into a supercritical state having pressure higher than the critical pressure of the given refrigerant. In this event, the compressor discharges a compressed refrigerant of the supercritical state together with the lubricating oil. The compressed refrigerant is separated from the lubricating oil by an oil separator (2) and thereafter cooled in a radiator (3) into a cooled refrigerant. After being decompressed in an expander (4) and evaporated in an evaporator (5), the cooled refrigerant is supplied as the given refrigerant to the compressor.

Abstract: The present invention relates to a magnifying observation apparatus of a video type in which an image of an object to be observed which has been picked up by an image pick-up apparatus incorporating an imaging device therein is reproduced on a monitor display and observed. It is an object of the invention to attain a compact structure of the entire system so as to permit easy observation in a simple manner. According to the present invention, in order to achieve such object, not only the imaging device but also a control circuit unit for the imaging device, an optical system for focusing the image of the object to be observed on the imaging device, and a light-source lamp for lighting the object to be observed, are incorporated in the image pick-up apparatus.

Abstract: A jet pump structure for a fuel tank having first and second chambers therein includes first, second and third fuel pipes all of which are connected to a vacuum chamber provided within the fuel tank. The first pipe returns oversupplied fuel into the vacuum chamber, the second pipe transfers fuel stored in the first chamber into the vacuum chamber, and the third pipe receives the fuel from the first and second pipes and discharge same into the second chamber. A flow guide member is provided within the first pipe, which receives the oversupplied fuel to form same into a swirl flow. The swirl flow is ejected from the first pipe as a jet flow into the vacuum chamber to provide a vacuum therearound within the vacuum chamber. The ejected swirl flow further works to seal the vacuum chamber against the third pipe so that the vacuum generated within the vacuum chamber is prevented from being released through the third pipe to effectively suck the fuel from the first chamber.

Abstract: A bottom wall of a fuel tank body defines an inwardly extending projection which separates at least a lower segment of an interior of the fuel tank body into a first fuel chamber and a second fuel chamber. Fuel is pumped out of the first fuel chamber. A portion of the fuel pumped out of the first fuel chamber is returned to the first fuel chamber by way of an ejector pump disposed within the fuel tank body. The ejector pump is driven by the return fuel. A communication pipe connects the second fuel chamber to the ejector pump. The ejector pump transports fuel from the second fuel chamber to the first fuel chamber via the communication pipe.

Abstract: A fuel supply system including a fuel tank, a feed conduit through which fuel is pumped from the fuel tank, and a return conduit through which excess fuel is returned to the fuel tank. The fuel tank has first and second sumps. The system comprises an ejector pump having a pressure chamber opening through a throat into the first sump. The pressure chamber is connected through a communication conduit to the second sump. The ejector pump includes a fuel nozzle having an inlet port connected to the return conduit and a discharge end opening into the pressure chamber for discharging a jet of fuel into the pressure chamber to create a negative pressure in the pressure chamber so as to suck fuel through the communication conduit from the second sump. In one aspect of the invention, a relief valve is provided which is responsive to a back pressure produced in the fuel nozzle for relieving the back pressure to the first sump when the back pressure exceeds a predetermined value.