Abstract: A rotary compressor comprises a compression chamber defined by enclosing both ends of a cylinder with a main bearing and an end bearing; compression elements including a piston which is eccentrically rotated by a crank shaft within the compression chamber, and dividing the compression chamber into a high pressure chamber and a low pressure chamber; and a sealed container to be a plenum space, in which the compression elements are housed and lubricating oil is sumped at the inner bottom section of the sealed container to effect lubrication of sliding parts of the compression elements, wherein the lubricating oil is returned into the sealed container after it has been cooled through a heat-exchanger provided outside the sealed container.

Abstract: A rotary shaft for compressor includes a cylindrical shaft body and a cylindrical eccentric member. The shaft body is rotatably arranged in an outer box of the compressor and is connected to an electric motor at one end portion thereof. The eccentric member has a through hole extending along the axis thereof and formed eccentric thereto, and also has a groove extending from the upper end face to the lower end face thereof to form a passage for lubrication oil. The groove is provided with a bottom face adjacent to the shaft body. The shaft body is inserted into the through hole. The eccentric member is secured to the other end portion of the shaft body by laser-welding the bottom of the groove to the shaft body. An annular eccentric roller is rotatably fitted onto the eccentric member.

Abstract: A multi-cylinder single-stage rotary rolling piston type gas compressor comprises four modular cylinder housings, partitions and end covers bolted together in end-to-end arrangement. Each cylinder housing includes an inner wall which defines a centrally located cylinder chamber and vane slot and an outer wall which defines a suction chamber, a discharge chamber and an oil chamber or reservoir surrounding the cylinder chamber. The four suction chambers are connected together end-to-end to a common gas inlet port. The four discharge chambers are connected together end-to-end to a common gas discharge port. The four oil chambers are connected together end-to-end. An internally lubricated rotor assembly extends axially through the four cylinder chambers and comprises a shaft rotatably supported on the end covers. The shaft has four eccentric crankarms on which four roller pistons are rotatably mounted, one for each cylinder chamber. The two central pistons are angularly displaced 180.degree.

Abstract: A fuel vaporization device is provided wherein atomized liquid fuel is injected in timed sequence directly into the vacuum chambers of a rolling piston vacuum pump. Optionally, minute amounts of air are bled into the vacuum chamber as the liquid fuel droplets are injected resulting in substantially complete and immediate vaporization of the fuel which is fed as gaseous fuel from the vacuum pump to the intake manifold of an internal combustion engine. A water jacket surrounds the pump for circulating heated liquid coolant from the engine in heat exchange relationship with the fuel in the vacuum pump.

Abstract: A horizontal rotary type compressor having a rotary compression unit hermetically contained in a closed shell has its lubricating parts effectively lubricated by lubricant oil being fed to the central lubrication bore formed axially in the crankshaft through a lubricant oil feed tube which is opened at one end within the lubricant oil accumulated on the bottom of the closed shell and adapted to be intermittently subjected to the refrigerant gas discharged from the compression unit.

Abstract: The disclosed rolling piston type compressor comprises a needle bearing sandwiched between two bearing washers and serving as a thrust bearing for a rotary shaft and a resilient sealing ring of polytetrafluoroethylene press fitted into a space defined by the outer periphery of the needle bearing and the two bearing washers. Alternatively the sealing ring may be formed of cast iron and seal the space with an oil film disposed in a clearance between the ring and one of the bearing washers.

Abstract: A reversible, hermetically-sealed rotary compressor driven by a reversible electric motor for use in a refrigeration system comprising a compressor cylinder, a rotor eccentrically rotatable in the cylinder and a vane dividing the cylinder into interchangeable high and low pressure sides. A switch-over member automatically directs refrigerant into one or the other fluid passageways leading to the refrigeration system as an incident of motor rotation.

Abstract: A self-adjusting assembling arrangement, where a shaft can be properly and quickly fitted within a cylindrical body member, which becomes resiliently supported on the shaft. The body member may form part of a rotatory piston member eccentrically mounted within a cylindrical casing, or of a wheel.

Abstract: The disclosure is directed to an improved rotary compressor of a closed type which is provided with a pressure introducing passage communicated at its one end, with a compression space within a cylinder, and at its other end, with a small volume space formed in the cylinder portion for reducing high frequency component in the cylinder inner pressure so as to reduce undesirable noises during operation of the compressor.

Abstract: An apparatus for withdrawing agglomerated solids, e.g. ash, from a fluidized bed of finely divided solid hydrocarbonaceous material, e.g. coal, is described. Agglomeration is effected by a high temperature reaction between the inorganic constituents of the hydrocarbonaceous material in the fluidized bed environment. A venturi is utilized to serve as a passage for withdrawing the agglomerated solids from the fluidized bed. Spiral or other descending ridges are positioned on the interior surface of the constricted cylindrical opening of the venturi. A tube, through which reaction gases pass, is centrally disposed within the constricted cylindrical opening to permit variable and increased rates of agglomerate discharge with improved separation and classification of the solid materials.

Abstract: A rolling piston compressor comprising: a casing of circular cross-section; a rolling piston supported within the casing on a drivable eccentric shaft so as to be freely rotatable thereon and adapted to roll on the internal surface of the casing in the course of rotation of the shaft; at least one separating slide slidably supported in the casing and resiliently urged by the action of a spring against the circumference of the rolling piston, said slide being disposed between an inlet port for drawing in a medium which is to be compressed and an outlet port for the delivery of the compressed medium, and being associated with a device for locking the separating slide in a position in which the free edge does not bear on the rolling piston circumference.

Abstract: A horizontal rotary type compressor having a rotary compression unit hermetically contained in a closed shell has its lubricating parts effectively lubricated with the lubricating parts effectively lubricated with the lubricant oil being fed to the central lubrication bore formed axially in the crankshaft through a lubricant oil feed tube which is opened at one end within the lubricant oil accumulated on the bottom of the closed shell and adapted to be intermittently subjected to the refrigerant gas discharged from the compression unit.

Abstract: In a rotary compressor unit including a compressor comprising a rotor rotatable in a cylinder, a blade in contact with an outer surface of the rotor and reciprocated thereby in a radial direction in a closed chamber formed in the cylinder, the chamber being defined by longitudinally spaced apart end plates on both sides of the cylinder, suction and discharge and passages opening through the end plates into the closed chamber, and a check valve provided at least in the suction passage, the check valve comprises a fluid diode.

Abstract: A reversible hermetically sealed rotary compressor for use in a refrigeration system comprising a compressor cylinder, a rotor eccentrically rotatable in the cylinder and a vane dividing the cylinder between high and low pressure sides relative to direction of rotation of the rotor. Suction and discharge ports provided for each direction of rotation are automatically switched by changing the direction of rotation of the rotor.

Abstract: A horizontal rotary type compressor having a rotary compression unit hermetically contained in a closed shell has its lubricating parts effectively lubricated with the lubricating parts effectively lubricated with the lubricant oil being fed to the central lubrication bore formed axially in the crankshaft through a lubricant oil feed tube which is opened at one end within the lubricant oil accumulated on the bottom of the closed shell and adapted to be intermittently subjected to the refrigerant gas discharged from the compression unit.

Abstract: A housing has a cylindrical interior which has a peripheral seal chamber parallel to the cylinder axis. Inlet and exhaust ports are formed in the housing, preferably in or near the seal chamber. These ports are sealed from each other by a freely rolling cylinder which rolls on a rolling piston cylinder mounted on a shaft with an eccentric and with a bearing between the eccentric and the piston. The rolling seal also engages the seal chamber, and to reduce friction a rotatable support on a fixed axis is disposed in the seal chamber and in turn is sealed by a rubbing seal to the seal chamber wall. The rolling seal cylinder retreats into the seal chamber when the piston cylinder reaches the region of the seal chamber. This structure eliminates prior art rubbing seals which engaged the rolling piston.

Abstract: An improved rotary pump designed to ensure a high pumping efficiency and delivery pressure without any unfavorable pulsation thereof. The pump includes a pump shaft drivably coupled to a prime mover and provided with a groove having a bottom surface extending in parallel with the axis of said shaft, and an eccentric rotor received in a cylindrical chamber for pumping of fluid and arranged to surround through a bearing said pump shaft for eccentric movement relative to said pump shaft while keeping a sealing contact with the wall of said cylindrical chamber. One or more wedge roller is disposed between said groove bottom surface and said bearing for effective power transmission from said pump shaft to said eccentric rotor. Between the cylindrical chamber wall and said eccentric rotor, there is formed a pump chamber which is sealingly divided by a partition member into a suction chamber and a delivery chamber.

Abstract: A rotary compressor 10 of the rolling piston type is shown wherein the rolling cylindrical piston 28 is forced into rolling contact with the cylindrical interior 15 of the compressor chamber by a hydraulic piston 78 and cylinder 64 arrangement providing a resilient force on the rolling piston 28 to permit non-compressible matter such as liquid refrigerant to be present in the compressor chamber and also, through means 82 for varying the hydraulic pressure to the hydraulic piston and cylinder arrangement, permit varying the compressor discharge pressure while the rolling piston is continuously driven.

Abstract: An apparatus having at least one alternately expanding and contracting chamber comprises a plurality of cylindrical rollers each having an exterior surface in continuous rolling engagement with two adjacent rollers, the rollers being rotatable along parallel axes, with at least one of the rollers rotating about an eccentric and/or reciprocating axis. The rollers are preferably of equal length with adjacent rollers being in contact substantially along their entire respective lengths, the chamber being defined between the rollers and enclosed at its ends by end plates.

Abstract: A planetary air motor with two internal gearings employing two internally toothed ring gears. One ring gear rotates and meshes with a first rim of a two-rim pinion, the other gear forms an intertooth space with a second rim of the pinion that is freely mounted on an eccentric journal of a pinion carrier and has radial through slots in the tooth spaces. The intertooth space is limited by a flange at one face and by a fixed washer at the other face of the fixed gear and is divided into two intertooth working zones A and B. Zone A communicates with the compressed air line and the other one (B) with the atmosphere. The pinion carrier has a main channel and an additional channel with an inside bore that is smaller than that of the main channel and which is isolated from the latter. The additional channel is disposed towards the periphery of an eccentric journal of the pinion carrier and communicates with the compressed air line and the intertooth working zone A through a slot in the pinion carrier.

Abstract: An engine of the rotary or orbital type having a piston member mounted to move eccentrically within a housing with a plurality of vanes disposed between the piston member and the housing to form a number of chambers which vary in volume as a piston member orbits within the housing. Each vane is supported in the piston member or housing for radial sliding movement as the piston member orbits and the vanes are mechanically controlled between respective sets of parallel surfaces which engage radially spaced portions of the vane to prevent radial movement of the vane relative to these surfaces while allowing lateral movement of the vanes along the surfaces as the piston member orbits.

Abstract: Liquid refrigerant is injected into the high-pressure side of a rotary compressor so as to cool the refrigerant being compressed to allow it to be useful in cooling the compressor motor. The injection port is located on the bottom face of the compressor chamber, within an area removed from the compressor chamber wall, immediately adjacent the compressor chamber discharge. The feed to the injection port is through a larger tube containing two non-connected capillaries, the first capillary being connected to the inlet of the tube and the second capillary being connected to the injection port. In this manner, a column of liquid remains in the second capillary.

Abstract: A motor driven machine, such as a machine capable of holding and imparting movement to a tool, for example, which may be an eraser strip that is brought to bear upon a surface, such as a paper surface, for erasure of undesirable markings therefrom. The machine includes an internal air supply mechanism having the capability of directing a flow of compressed air against the work surface in the area of contact between the tool and the surface for the purpose of cooling the surface and the tool as well as blowing particles from the immediate area of engagement between the tool and the surface. The machine may include a holding device for supporting the machine in proper position to be grasped when the machine is not in use.