Abstract: A vibrating-type motor is provided, in which only a restoring force is reduced without reducing a thrust increasing effect by auxiliary magnets, thereby reducing size while increasing efficiency.

Abstract: A vibrating-type motor is provided, in which a restoring force is reduced without reducing a thrust increasing effect by auxiliary magnets, thereby to reduce the size and expense of the motor while increasing efficiency. The vibrating-type motor includes a moving part having a main magnet and auxiliary magnets individually junctioned coaxially to two axial end portions of the main magnet, an exciting yoke including two leg portions opposed to the moving part through a gap and arranged coaxially with the moving part, an exciting coil wound on the exciting yoke for generating a magnetic flux in the leg portions, and a back yoke arranged to confront the exciting yoke with the moving part located between the back yoke and the exciting yoke, wherein outer-side end portions of the exciting yoke extend past axial end portions of the back yoke.

Abstract: A oxygen-production device includes a pulse-tube cryocooler for cooling air to liquefy oxygen, and a main container for obtaining and retaining liquefied oxygen. The main container has a heat regenerator, a cold head, and a pulse tube of the pulse-tube cryocooler therein. A temperature sensor measures a temperature of the liquefied oxygen, and a control device controls an output of the pulse-tube cryocooler according to the temperature measured by the temperature sensor.

Abstract: A oxygen-production device includes a pulse-tube cryocooler for cooling air to liquefy oxygen, and a main container for obtaining and retaining liquefied oxygen. The main container has a heat regenerator, a cold head, and a pulse tube of the pulse-tube cryocooler therein. A temperature sensor measures a temperature of the liquefied oxygen, and a control device controls an output of the pulse-tube cryocooler according to the temperature measured by the temperature sensor.

Abstract: In a compressor, a yoke constituting a linear drive section together with a driver coil, through which magnetic fluxes from a permanent magnet pass, is integrated with a cylinder and a container. A piston inserted into the cylinder is supported by springs, and the other end thereof faces an operating-gas-compressing space. The linear drive section is arranged parallel to the piston in a diametrical direction thereof. This construction reduces the longitudinal dimension of a piston portion. Further, a plurality of parts is combined together in a main body block, thereby reducing the number of parts required and improving the assembly accuracy.

Abstract: In a compressor, a yoke constituting a linear drive section together with a driver coil, through which magnetic fluxes from a permanent magnet pass, is integrated with a cylinder and a container. A piston inserted into the cylinder is supported by springs, and the other end thereof faces an operating-gas-compressing space. The linear drive section is arranged parallel to the piston in a diametrical direction thereof. This construction reduces the longitudinal dimension of a piston portion. Further, a plurality of parts is combined together in a main body block, thereby reducing the number of parts required and improving the assembly accuracy.