Abstract: Provided herein is a thrust bearing. The bearing includes one or more bearing pads, each with a thrust face, attached to a compliant bearing housing, a system for delivering a pressurized gas lubricant to the thrust face of the bearing pads, and a damping system that operates in parallel with the compliant bearing housing.

Abstract: A stator assembly of a motor for a head drum is provided to generate a driving force disposed opposite to a motor rotor. The stator motor includes a double sided flexible printed circuit (FPC). A signal line is formed in a pattern is formed on both sides of the flexible printed circuit (FPC) for inputting an electrical signal. A plurality of wound driving coils are connected to a first side of the flexible printed circuit (FPC) to electrically connect with the signal line. A yoke is connected to a second side of the flexible printed circuit (FPC).

Abstract: A head drum assembly of a tape recorder is disclosed. A rotor case is directly bonded to a rotary drum, a spacer interposed between a magnet yoke and a stator coil of a motor stator is removed, and a predetermined gap is formed between the magnet yoke and the stator coil. As a result, it is possible to remove a rotor bush and a spacer from the component list of the conventional construction and to exclude the assembling steps thereof, whereby assembling the head drum assembly is easier and the cost of manufacturing is reduced.

Abstract: A rotation balance control mechanism controlling a rotation balance of a rotary head drum apparatus comprising a fixed drum and a rotary drum and a drum motor unit urging the rotary drum, the rotation balance control mechanism comprising a rotor plate mounted on a shaft mount of the drum motor, the rotor plate capable of mounting a balance weight for controlling the rotation balance of the rotary head drum apparatus.

Abstract: A head drum apparatus including a lower drum; a stationary shaft pressed and fitted into a center hole of the lower drum; an upper drum rotatably coupled to the stationary shaft via at least one bearing; a rotor magnet secured via a plate to the upper drum; a boss fixed to the top portion of the stationary shaft by a set-screw; a PCB mounted to the boss such that it is opposite to the rotor magnet, the PCB having a pulse generator (“PG”) pattern, a frequency generator (“FG”) pattern, connection patterns and jump patterns formed on one surface thereof, the PG pattern and the FG pattern being connected to the respective connection patterns via the respective jump patterns; and motor stator coils mounted to the PCB, whereby the structure of the motor becomes simpler, the number of the components and the manufacturing steps are reduced, the manufacturing efficiency is enhanced and the productivity thereof is increased.