Alps Electric Co., Ltd.

Makoto Watanabe

Motohiro Shimaoka

A keyswitch device of the invention includes a plurality levers (first to third levers), one side of each lever rotating engaging the base plate; a holder supported so as to be upwardly and downwardly movable with respect to the base by being engaged with the other side of each lever; and a switch, disposed between the base plate and the holder, for performing a switching operation as the keytop is moved upward and downward. Rotary shafts of the first and second levers symmetrically disposed on the left and right sides engage a groove of the holder. A rotary shaft of the third lever is disposed so as to cross the rotary shafts disposed at engagers at the first and second levers.

Keyswitch device and keyboard device

A keyswitch device includes first to third levers, a holder, and a switch. One side of each lever rotatably engages a base plate. The holder is supported so as to be movable vertically with respect to the base plate by being engaged with the other side of each lever. The switch is disposed between the base plate and the holder, and is used to perform a switching operation when the holder is moved vertically. A rotary shaft of the third lever is disposed so as to cross rotary shafts at engaging sections of the respective first and second levers.

A plurality of magnetic head devices are placed on different scanning regions in the radial direction of a disk-shaped recording medium. Each scanning region is slightly displaced from each of the other scanning regions in the radial direction of the recording medium. The plurality of magnetic head devices is tested.

Method and apparatus for testing a plurality of magnetic head devices opposing a common surface of a magnetic disk

A magnetic disk drive assembly has an ejector pivotably mounted on a base for movement between a locked position and an unlocked position, the ejector being normally spring-biased toward the unlocked position. When a diskette is fully inserted into the magnetic disk drive assembly, the ejector is displaced by the diskette into the locked position. A locking projection is mounted on the base for locking the ejector in the locked position. A hub frame pivotably mounted on the base supports a lock release member resiliently engageable with the ejector when the latter is in the locked position and also when the hub frame is in a drive position. When the hub frame is moved from the drive position to a non-drive position, the lock release member allows the ejector to be released from the locked position to the unlocked position and also released from the lock release member.

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Fukushima-ken, Japan

Makoto Watanabe