Abstract: A vane of a first cylinder is compressed and urged by a spring member. A vane of a second cylinder is compressed and urged corresponding to a differential pressure between an intra-casing pressure guided into a vane chamber and a suction pressure or discharge pressure guided to the cylinder chamber. A pressure shift mechanism which guides the suction pressure or discharge pressure has a branch pipe having a one end connected to a high pressure side of the refrigeration cycle, an other end connected to a suction pipe, and a first on-off valve in a midway portion, and a second on-off valve or a check valve which is provided in the suction pipe on a side upstream of a connection portion of the branch pipe and on a side downstream of an oil returning opening in an accumulator.

Abstract: An alkaline battery sealing gasket 33 made of a resin, comprises a peripheral packing portion 36 sandwiched in a pressed state between an opening end of a metal battery can 11 that contains an electricity generating element 20 and doubles as a positive electrode terminal and a negative electrode terminal 32 so as to seal the opening end with an airtight manner; and an isolation wall portion 37 for isolating a space on a back side of the negative electrode terminal from a space containing the electricity generating element, wherein in the isolation wall portion, a thinner portion 38 to break open earlier due to increases in gas pressure in the containing space to function as a safety valve is formed groove-like. A groove direction of the thinner portion 38 is in the same direction as an orientation of the resin of the gasket, and an Izod impact value of the resin forming the gasket is in a range of 20 to 60 J/m (at a temperature of 23±2° C. and a relative humidity of 50±5%).

Abstract: A winding apparatus comprises a core jig having a circular outer circumference, plate-shaped stator core jigs designed to have a shape corresponding to stator cores, and holding jigs to be detachably installed to the outer circumference of the core jig for holding the stator core jigs. Accordingly, the plurality of divided stator cores can be subjected to winding quickly and easily. It is possible to perform an efficient winding operation.

Abstract: A gas cycle engine for a small-sized, low-vibration and long-life refrigerator which is high in centering accuracy of a moving member and excellent in durability. In the gas cycle engine for such a refrigerator, a thermodynamic gas cycle is performed by using a moving member (2 and 3) disposed in a cylinder (1), supported by leaf springs so as to be movable in the axial direction of the cylinder and driven by a linear motor (9, 12 and 13), the leaf springs (4a and 4b) being made of an electrical conductor used also as current leads for supplying a current to the linear motor.