Abstract: A heat pump employing CO2 as refrigerant and utilizing heat source of natural water, e.g. well water, ground water, river water or sea water, effectively is applied to an air conditioning system in order to enhance heating/hot water supplying capacity and refrigeration capacity without requiring a large scale appurtenant facilities.

Abstract: A heat pump employing CO2 as refrigerant and utilizing heat source of natural water, e.g. well water, ground water, river water or sea water, effectively is applied to an air conditioning system in order to enhance heating/hot water supplying capacity and refrigeration capacity without requiring a large scale appurtenant facilities.

Abstract: A magnetic disk apparatus, a method for assembling an actuator mechanism thereof and an assembling unit of the actuator mechanism, wherein a plurality of head arms are installed integrally onto an arm supporting block and a head assembly is fixed to these head arms by use of arm mounting assembly. Also, an assembling method and assembling unit suitable for installing the head assembly to the head arm in the case that a plurality of head arms are installed integrally onto the arm supporting block. Because a plurality of head arms are installed integrally onto the arm supporting block, its assembling work is simple, the cost is decreased, and still more it is possible to effectively reduce a latent off-track of magnetic head.

Abstract: A flexible magnetic disc drive apparatus which comprises a disc clamper assembly which is operated in interlock with a door to hold a flexible magnetic disc between the disc clamper assembly and spindle, a link mechanism for connecting the disc clamper assembly to the door, wherein the link mechanism comprises a door lever which is rotatably fitted at one end to the housing of the flexible magnetic disc apparatus in the vicinity of the disc clamper assembly, and is connected at the other end to the door and whose intermediate part is provided with a projection, and a clamper hanger which is rotatably fitted at one end to the housing between the door and the projection and is connected at the other end to the clamper hanger, and wherein, when the door is opened, the door lever pushes the clamper hanger upward to lift the disc clamper assembly above the spindle, and, when the door is closed, the clamper hanger is elastically brought downward by the urging force of the plate spring fitted to the door lever to le

Abstract: A cartridge loading mechanism for a magnetic disk drive apparatus of the present invention includes a cartridge receiver with a base plate which enables an operator to orient and locate a magnetic disk cartridge, which is inserted substantially in the horizontal direction through the front of the magnetic disk drive apparatus, so that the cartridge may be coupled with a driving mechanism and moved to a given operating position on the cartridge receiver while letting the apparatus sustain the weight of the cartridge.

Abstract: Disclosed is a flexible disk drive apparatus which is so formed that a flexible disk cartridge drives a pop-up arm urged in the direction opposite to the cartridge inserting direction when the cartridge is inserted in the apparatus with doors open; the pop-up arm is latched to a main frame of the apparatus after the cartridge has reached a predetermined working position, while the pop-up arm and cartridge are forced out toward the doors by the urging force before the cartridge reaches the working position.