A welder using an ultrasonic vibration includes a vibration direction converter for diversely converting the direction of vibration generated by a vibrator according to the properties of a welded material, so that welding efficiency is improved. The vibration direction converter is made to be disassembled or assembled, so that the replacement of the rod is easy when it experiences vibration fatigue. Efficiency is maximized because plural welding operations can be made simultaneously, since plura...

In a magnetic head transferring device, of a hard disk drive, a locking member is provided to lock a rotor after the magnetic head is moved to a parking zone formed on a hard disk. The locking member includes a bimetal member which reversibly deforms when heated by an electric current supplied from a power supply source. The rotor has a coupling slot through which one side of the bimetal member selectively inserts into or separates from as the bimetal member deforms. Thus, since the rotation of ...

In a magnetic head transferring device of a hard disk drive, a rotor is rotatably mounted on a base and has a magnetic head for recording/reproducing information on/from the disk. A stator is installed on the base for actuating the rotor to move across a parking area and a recording area formed on the hard disk. First and second magnetic members are respectively installed at one end of the rotor and the stator and are magnetically coupled to one another when the magnetic head is positioned in th...

A latching apparatus of a hard disk drive using a bimetal which includes a locking/releasing device for selectively locking/releasing an actuator for protecting a magnetic disk from being damaged by a magnetic head. A bimetal member operates the locking/releasing by heat expanding and shrinking according to whether an electric power is being applied. A heating device operates bimetal member. Preferably, the heating device is made of tantalum-aluminum(TaAl) alloy or nickel-chrome(NiCr) alloy.

A paper insertion limiting device of a paper feeding unit which prevents papers from being inserted to a drive roller when the papers are loaded. The paper insertion limiting device of a paper feeding unit is provided with a sheet regulating member mounted on the front end of the paper feeding unit to rotate by a certain angle, and regulate an insertion depth of papers loaded in the paper feeding unit, and a regulating member activator to actuate the sheet regulating member to block the front en...

A method capable of setting the receiving condition of a mobile communication terminal for an incoming call, Short Message Service (SMS) or Multi-media Message Service (MMS) in advance, is provided. In one embodiment of the present invention, a user of the mobile communication terminal can set the receiving condition for the incoming call, SMS or MMS differently in each CID and each time zone, so that the incoming call, SMS or MMS transmitted from a CID is processed to be received or reception-r...

An apparatus for feeding documents in a facsimile includes a pickup roller for picking up documents one by one, a white roller that faces a read module and rotates, the read module for reading data from the documents transferred by the pickup roller, a discharge roller for discharging the documents after the documents are passed through the white roller and the read module, a driving unit, a power transmission mechanism for selectively transmitting a power of the driving unit either only to the ...

An apparatus to remove an ink cartridge of an ink-jet printer. The apparatus includes a carriage having a supporting frame movably supported by a guide rail, and a receptacle connected to the supporting frame, an ink cartridge removable from the receptacle, the ink cartridge having a latching protrusion formed at an upper end thereof, a latching unit disposed at the supporting frame, being compressible and de-compressible to an original form, the latching unit in a compressed state latching the ...