Provided is a resin cover removal structure for removing a resin cover attached to a metallic body, where the body and the resin cover are attached to each other in such a manner that a body-side attachment surface formed on a peripheral edge portion of the body and a cover-side attachment surface formed on a peripheral edge portion of the resin cover face each other, a part of at least one of the body-side attachment surface and the cover-side attachment surface is cut off to provide an insertion groove opened outside a peripheral edge portion thereof, the insertion groove is inclined in such a manner that a distance between the body and the resin cover decreases toward the inside of the peripheral edge portion, and the resin cover can be removed from the body by inserting a wedge-shaped tool into the insertion groove.

There is provided a shoe capable of suppressing deformation of a member on which the shoe slides. The shoe includes: a first sliding surface 210 which slides on a concave surface of a piston (first movable member); and a second sliding surface 220 which bulges toward a side opposite to the first sliding surface 210 and slides on a flat surface of a swash plate (second movable member). The second sliding surface 220 includes: a curved outer peripheral portion 221 which is provided along an outer periphery of the second sliding surface 220; and a central portion 222 which is provided at a center of the second sliding surface 220 so as to be continuous with the curved outer peripheral portion 221 and has a radius of curvature greater than a radius of curvature of the curved outer peripheral portion 221.

Provided is a sliding member, method for manufacturing sliding member, and compressor swash plate using sliding member in which adhesion between the substrate and the resin is enhanced, and which has the excellent durability whereby peeling of the resin film from the substrate does not occur due to prolonged sliding even under harsh load conditions. The sliding member provides a substrate irradiated laser light with energy intensity per unit area of 0.053 J/mm.sup.2 or more and configured an uneven part formed toward a vertical direction by the irradiated laser light and a melted and solidified portion on the uneven part and a resin film including solid lubricant and a binder resin on the substrate.

Provided are a sliding member for pumps in which generation of a wear substance is quickly and accurately grasped even if the wear substance is generated when the sliding member slides while being in contact with another member, and a pump operation state detection system using the sliding member. The pump operation state detection system includes a uniaxial eccentric screw pump, a detection device capable of detecting metal powder in a fluid discharged from the uniaxial eccentric screw pump, and a determination device. In the uniaxial eccentric screw pump, a stator is arranged so as to be exposed to a fluid conveyance path through which the fluid flows. The stator is configured to slide while being in contact with a rotor along with operation of the uniaxial eccentric screw pump. The stator is made of a resin or a rubber and contains 10-30% of metal powder by weight ratio.

A rotary compressor includes a compressor housing that is provided with a refrigerant discharge portion and a refrigerant suction portion, and an accumulator that is fixed to the outer peripheral surface of the compressor housing and connected to the suction portion. The accumulator has a cylindrical body portion, which is formed of a resin material, an upper portion, which is formed of a metal material and closes an upper end of the body portion, and a lower portion, which is formed of a metal material and closes a lower end of the body portion, the upper portion is joined to the upper end of the body portion, and the lower portion is joined to the lower end of the body portion.

A diaphragm pump includes a pump chamber, a diaphragm, and a diaphragm deformer. The pump chamber is box-shaped and includes at least an inlet opening, an outlet opening, and a diaphragm attaching opening. The pump chamber is provided with an inner space. A diaphragm is made of an elastically deformable material, and is provided in the pump chamber so as to cover the diaphragm attaching opening. The diaphragm deformer elastically deforms the diaphragm to change a capacity of the inner space. The outlet opening is located at a highest position in the inner space of the pump chamber.

A combustion engine is provided that includes an engine block with a fiber material in a resin. The engine block defines a piston bore and a bore liner positioned within the piston bore and includes a substrate and a coating positioned on an interior surface of the substrate. An exterior surface of the substrate defines a retention feature.

To provide an internal gear pump which is able to stably ensure the sealing property between a resin casing constituting a trochoid accommodating portion and a cover, to omit the seal ring at the portion, and to stabilize the discharging ability. An internal gear pump 1 has a trochoid 4 in which an inner rotor 3 having a plurality of outer teeth is accommodated in an outer rotor 2 having a plurality of inner teeth in a state in which outer teeth mesh with inner teeth and are eccentric, and a casing 5 having a trochoid accommodating recess 5a formed therein, and a cover 6 which closes the recess 5a. The casing 5 is an injection-molded body of a resin composition. The casing 5 and the cover 6 are fixed with bolts. A metallic bush 7 is provided in the bolt fixing hole portion of the casing 5. In the cross-section of the joining portion between the casing 5 and the cover 6, the position of the end surface 7a of the bush 7 is higher than the bush formation surface 5e around the bush of the casing 5 and lower than the sealing surface 5d around the recess of the casing 5, as viewed from the bottom surface 5c of the recess 5a.

A refrigeration cycle apparatus includes a refrigerant and a refrigeration cycle circuit. The refrigeration cycle circuit includes a heat exchanger and a compressor, and circulates the refrigerant. The refrigerant is a single hydrofluoroolefin (HFO)-based refrigerant or a mixed refrigerant. In the mixed refrigerant, an HFO-based refrigerant is mixed at a mixing ratio of 10% by weight or more. The compressor includes a motor. The motor includes a resin component. The resin component includes a polyimide having a terminal blocked with a terminal group.

There is provided a composite plain bearing having excellent heat resistance, creep resistance under high surface pressure, low friction, abrasion resistance, and other characteristics while being capable of manufacture with high productivity. A composite plain bearing (1) comprising an ingot metal plate (2) and a resin layer (3) comprises a resin composition in which an aromatic polyether ketone resin or the like is used as a base resin, wherein the resin layer (3) is overlaid by injection molding and integrally provided on the surface on the surface of the ingot metal plate (2) to a thickness of 0.1 to 0.7 mm. The ingot metal plate (2) is chemically surface-treated on a face joined to the resin layer (3).