Abstract: A compressor includes a rotary shaft, a cam, a cylinder block, pistons, a thrust bearing, a rotary valve, and an oil passage. The rotary shaft has an in-shaft passage formed therein. The in-shaft passage has an outlet open to the outer peripheral surface of the rotary shaft. The cam rotates integrally with the rotary shaft. The pistons are coupled to the rotary shaft through the cam. The thrust bearing is provided between the cam and the cylinder block. The thrust bearing includes a first race in contact with the cam, a second race in contact with the cylinder block, and rolling elements retained between the first and second races to form a gap therebetween. The oil passage is formed in the outer peripheral surface of the rotary shaft so as to extend from the gap to the outlet of the in-shaft passage.

Abstract: A compressor includes a rotary shaft, a cam, a cylinder block, pistons, a thrust bearing, a rotary valve, and an oil passage. The rotary shaft has an in-shaft passage formed therein. The cam rotates integrally with the rotary shaft. The pistons are coupled to the rotary shaft through the cam. The thrust bearing is provided between the cam and the cylinder block. The thrust bearing includes a first race in contact with the cam, a second race in contact with the cylinder block, and rolling elements retained between the first and second races to form a gap therebetween. The oil passage extends from the gap to the in-shaft passage and includes an oil retaining space formed in at least one of the cam and the cylinder block.

Abstract: A piston type compressor has a cylinder block, a cylinder bore formed in the cylinder block, a rotary shaft, a piston and a compression chamber formed in the cylinder bore. The piston is received in the cylinder bore and reciprocates in accordance with the rotation of the rotary shaft. The compressor further has a main suction chamber communicable with the compression chamber, a discharge chamber formed annularly so as to surround the main suction chamber, a subsidiary suction chamber formed so as to surround the discharge chamber, partitions formed in the discharge chamber so as to protrude into the discharge chamber and a suction passage formed in each partition so as to interconnect the subsidiary suction chamber and the main suction chamber.

Abstract: A double-headed piston type compressor includes front and rear housings, a cylinder block defining therein a crank chamber and a plurality of cylinder bores and having a shaft hole therethrough, a double-headed piston accommodated in the cylinder bores for reciprocating therein, a rotary shaft rotatably supported by the shaft hole, compression chambers defined by the cylinder bores, a suction chamber defined by the front housing and an introduction passage having a rotary valve for introducing refrigerant from the suction chamber into the compression chambers. The introduction passage includes a communication passage formed in the cylinder block for connecting the suction chamber to the shaft hole, suction passages connecting the shaft hole and the compression chambers and a recessed passage formed in the outer circumferential surface of the rotary shaft for connecting intermittently between the communication passage and the respective suction passages in accordance with the rotation of the rotary shaft.

Abstract: The present invention is such that it is an assignment to be solved to provide a process for producing aluminum composite material in which an iron sintered body of much higher adhesion is cast-in inserted with aluminum. A process according to the present invention for producing aluminum composite material is characterized in that it has: a preform molding step of molding a porous iron sintered-material preform by molding an iron powder so that an occupational volumetric fraction becomes from 50% or more to 70% or less, and then by sintering the iron powder, thereby molding a porous iron sintered material preform; and a composite-material forming step of placing said preform in a casting die whose die temperature is from 200° C. or more to 400° C. or less, the preform being preheated at a preheating temperature of from 300° C. or more to 400° C.

Abstract: A suction structure is provided for allowing refrigerant into first and second compression chambers from a suction pressure region through first and second rotary valves and first and second communication passages in a double-headed piston type compressor. The first and the second rotary valves respectively have first and second introduction passages. The distance to the first communication passage from the suction pressure region through the first introduction passage is greater than the distance to the second communication passage from the suction pressure region through the second introduction passage. The first communication passage with a circular cross-section in the cylinder block connects the first compression chamber to the first introduction passage. The second communication passage with a circular cross-section in the cylinder block connects the second compression chamber to the second introduction passage.

Abstract: The present invention provides a refrigerating machine oil composition for use in a compressor for a refrigerator in which a sliding surface of at least a part of constitutional members of the compressor is coated with a lubrication film-forming composition containing a resin having a heat distortion temperature of 100° C. or higher as a binder, and a solid lubricant, wherein the refrigerating machine oil composition contains a base oil made of a polyoxyalkylene glycol having a kinematic viscosity of from 3 to 50 mm2/s as measured at 100° C., and a compound selected from the group consisting of amide compounds, amidated amino acid compounds and aliphatic amines having a specific structural formula which compound is contained in an amount of from 0.

Abstract: A double-headed piston type compressor connected with an external device is provided. The compressor includes a plurality of cylinder bore pairs, double-headed pistons, a first rotary valve, a second rotary valve, first suction passages, and second suction passages. In each cylinder bore pair, a first time period from a first top dead center timing, which is timing when the double-headed piston reaches a top dead center in a first compression chamber, to a first communication start timing, which is timing when a first introduction passage starts to communicate with a first suction passage, is different from a second time period from a second top dead center timing, which is timing when the double-headed piston reaches a top dead center in a second compression chamber, to a second communication start timing, which is timing when the second introduction passage starts to communicate with a second suction passages.

Abstract: A pressure vessel of the present invention is such that at least part thereof comprises a metallic composite material 40 comprising a light metal 41, which is turned into a matrix, and a plate-shaped iron-based member 42, which is buried in the light metal 41, whose major component is iron, and which is provided with a large number of through holes penetrating the front and rear surfaces. By means of this construction, it is possible to provide a pressure vessel having a novel construction whose pressure resistance is enhanced without being accompanied by thickening, and a compressor being provided with a housing comprising the pressure vessel.

Abstract: A metallic composite material according to the present invention is a metallic composite material, which comprises: a composited portion having a sintered body 1 being completed by sintering a metallic powder of a first metal, and a second metal 2? infiltrating into the pores of the superficial-layer portion of the sintered body 1 at least; and a parent-material portion having the second metal 2 covering the composited portion, and is characterized in that the sintered body 1 is completed by sintering the metallic powder together with a melt-disappearing material, which possesses a melting point being the sintering temperature of the metallic powder or less, or a burn-disappearing material, which burns to disappear at the sintering temperature or less; and the metallic composite material is equipped with a fitting portion at the interface between the composited portion and the parent-material portion, fitting portion which is formed by infiltrating the second metal 2? into the pores and additionally getting t

Abstract: A swash plate compressor includes a housing that has a cylinder bore and rotatably supports a drive shaft. A swash plate is operatively coupled to the drive shaft for rotation therewith. A piston is accommodated in the cylinder bore for reciprocating movement. First and second spaced shoes are fitted to the piston on a side adjacent to the cylinder bore and on a side away from the cylinder bore, respectively, for coupling the piston to the swash plate. The rolling body is mounted on the swash plate through a bearing and in slide contact with the first shoe. A surface of the rolling body in slide contact with the first shoe or a surface of the first shoe in slide contact with the rolling body has a diamond-like carbon film. A surface of the rolling body in rolling contact with the bearing exposes a base material of the rolling body.

Abstract: A pressure vessel of the present invention is such that at least part thereof comprises a metallic composite material 40 comprising alight metal 41, which is turned into a matrix, and a plateshaped iron-basedmember 42, which is buried in the light metal 41, whose major component is iron, and which is provided with a large number of through holes penetrating the front and rear surfaces. By means of this construction, it is possible to provide a pressure vessel having a novel construction whose pressure resistance is enhanced without being accompanied by thickening, and a compressor being provided with a housing comprising the pressure vessel.

Abstract: A sliding film includes a solid lubricant, a binder resin, and a low-melting-point material. The binder resin is for holding the solid lubricant on a surface of a substrate, and exhibits a glass transition temperature. The low-melting-point material exhibits a melting point lower than the glass transition temperature of the binder resin. The low-melting-point material demonstrates a latent heat which can absorb frictional heat generated between sliding members, and accordingly retards the degradation of the binder resin. As a result, the sliding film produces high seizure resistance.

Abstract: A structural body of the present invention comprises a first member (1) having a first outside end portion (10) in which a first metal element is adapted to a major component; a second member (2) having a second outside end portion (20) in which a second metal element, being different from the first metal element, is adapted to a major component, and which is disposed to contact with the first outside end portion (10); and a coating member (3) comprising a coated film, at least whose outside superficial portion is composed of a fluoropolymer substance, and coating at least a part of both first outside end portion (10) and second outside end portion (20) so as to cover the contact portion (50) between them.

Abstract: A pressure vessel of the present invention is such that at least part thereof comprises a metallic composite material 40 comprising a light metal 41, which is turned into a matrix, and a plate-shaped iron-based member 42, which is buried in the light metal 41, whose major component is iron, and which is provided with a large number of through holes penetrating the front and rear surfaces. By means of this construction, it is possible to provide a pressure vessel having a novel construction whose pressure resistance is enhanced without being accompanied by thickening, and a compressor being provided with a housing comprising the pressure vessel.

Abstract: A compressor has a swash plate and shoes. Surfaces of the swash plate slides on flat surfaces of the shoes. A sliding film is formed on each of the swash plate surfaces. The sliding films are formed of a polyamide-imide resin that contains at least solid lubricant. The polyamide-amide resin has a glass transition temperature of 270° C., a tensile strength at room temperature of 200 MPa, or more imide groups than amide groups. When a base portion of the swash plate is made of an aluminum-based metal, the sliding films are formed on the base portion with middle layers made of anodized aluminum in between.

Abstract: A swash plate compressor includes a housing that has a cylinder bore and rotatably supports a drive shaft. A swash plate is operatively coupled to the drive shaft for rotation therewith. A piston is accommodated in the cylinder bore for reciprocating movement. First and second spaced shoes are fitted to the piston on a side adjacent to the cylinder bore and on a side away from the cylinder bore, respectively, for coupling the piston to the swash plate. The rolling body is mounted on the swash plate through a bearing and in slide contact with the first shoe. A surface of the rolling body in slide contact with the first shoe or a surface of the first shoe in slide contact with the rolling body has a diamond-like carbon film. A surface of the rolling body in rolling contact with the bearing exposes a base material of the rolling body.

Abstract: A sliding film includes a solid lubricant, a binder resin, and a low-melting-point material. The binder resin is for holding the solid lubricant on a surface of a substrate, and exhibits a glass transition temperature. The low-melting-point material exhibits a melting point lower than the glass transition temperature of the binder resin. The low-melting-point material demonstrates a latent heat which can absorb frictional heat generated between sliding members, and accordingly retards the degradation of the binder resin. As a result, the sliding film produces high seizure resistance.

Abstract: A pressure casing includes a composited cast member. The composited cast member includes an iron-based porous substance whose major component is Fe and which has a large number of pores, and a cast-wrapping member whose major component is a light metal and which cast-wraps a part of the iron-based porous substance at least. The iron-based porous substance includes a connector disposed adjacent to a boundary between the iron-based porous substance and the cast-wrapping member and exhibiting a larger porosity, and a high-strength reinforcer disposed in the iron-based porous substance free from the connector and exhibiting a smaller porosity. The connector is impregnated with the cast-wrapping member, and solidifies therewith, thereby firmly bonding the iron-based porous substance and the cast-wrapping member in the composited cast member. The pressure casing secures strength with the reinforcer, and secures adhesiveness with the connector.

Abstract: An aluminum based composite material includes a matrix and a reinforcing material. The matrix mainly contains aluminum and contains magnesium. The reinforcing material is constituted of whisker and nitriding short fiber which is treated by nitriding process. The reinforcing material is dispersedly contained in the matrix. The aluminum based composite material has a high thermal resistance.