Abstract: In order to adapt a balance piston unit of a compressor to a high speed, and to extend a service life of the compressor, a screw compressor according to the present invention includes a screw rotor including a rotor shaft, a radial bearing, a thrust plate, a balance mechanism, which is a slide bearing, a lubrication oil supply flow passage for supplying a lubrication oil, and a working fluid supply flow passage for supplying a working fluid for pressing the balance mechanism toward the thrust plate so that a reverse thrust load acts on the thrust plate.

Abstract: In order to adapt a balance piston unit of a compressor to a high speed, and to extend a service life of the compressor, a screw compressor according to the present invention includes a screw rotor including a rotor shaft, a radial bearing, a thrust plate, a balance mechanism, which is a slide bearing, a lubrication oil supply flow passage for supplying a lubrication oil, and a working fluid supply flow passage for supplying a working fluid for pressing the balance mechanism toward the thrust plate so that a reverse thrust load acts on the thrust plate.

Abstract: A vertical sash of a vehicular door frame includes a channel member defining a glass run accommodation space and an inboard-side member having a pocket portion disposed on the inboard side of the channel member. An inboard-side opening edge portion of the channel member and a pocket edge portion of the inboard-side member are joined together. At least one of the channel member and the inboard-side member is plated. A space is provided between the outer surface of the inboard-side opening edge portion of the channel member and the inner surface of the pocket edge portion of the inboard-side member. The space extends in a longitudinal direction and is open at the distal ends of the edge portions. Laser welding is performed along the space.

Abstract: A screw compressor capable of increasing a pressure receiving area of a balance piston, employing a thrust bearing having a large load capacity, and preventing an occurrence of a reverse thrust load state when started. The rotor shaft extending beyond both sides of screw rotors 11, 12 is rotatably supported by radial bearings 13, 14. An input shaft 15 serves as a rotor shaft on the suction side. A rotor shaft on the discharge side is rotatably supported by a thrust bearing 16 at a position farther away from the screw rotors 11, 12 than the radial bearing 14. A balance piston 17 is mounted on the rotor shaft at a position farther away from the screw rotors 11, 12 than the thrust bearing 16. A partitioning wall 31 is provided between the thurst bearing 16 and the balance piston 17.

Abstract: A circuit for a clock having a time indicating mechanism is connected to regulate the driving of a DC motor by a predetermined amount at predetermined time intervals, so as to actuate the time indicating mechanism without being affected by the variation in the amplitude of the DC energizing voltage available for driving the motor and the variation in the load on the motor. The motor driving circuit has a timing pulse generating circuit for generating timing pulses at the predetermined time intervals, a holding circuit actuated by the timing pulse applied thereto by the timing pulse generating circuit so as to be self-held thus enabling the motor to be energized from the DC energizing voltage, and switching means, connected to the motor or the time indicating mechanism so as to be actuated when the motor is driven by the predetermined amount.