Abstract: An axial pin tubular lock for use in securing portable computers and other devices having spindle-accepting ports. The lock is bade up of an outer shell attached to a cable, an inner shell, a rotatable driver sleeve, a stationary tumbler sleeve, a rear scuff plate held in place by a combination of an adhesive and cooperative geometric engagement with the outer shell, a locking spindle extending through the driver and tumbler sleeves, a retaining plate and an anti-rotation extension which may be integrally formed with the retaining plate. The rotatable driver sleeve is equipped with an internally disposed detent which engage a groove on the spindle, thereby providing proper axial and radial alignment between the spindle and the driver sleeve. The internal surface of the stationary tumbler sleeve has an indented support surface, thus providing spindle support while permitting passage of the spindle head through the tumbler sleeve during assembly.

Abstract: Apparatus for preventing unwanted access to a disk drive is disclosed. A housing has a surface adapted to overlie the slot, an internal piston chamber extending inwardly from one end of the housing, and a lock receiving chamber intersecting the piston chamber immediate the ends of the housing. A fixed latch member extends outwardly from one end of the housing, and is provided with a lip at its distal end. A movable latch member is attached to a piston located in the piston chamber and projects outwardly parallel to the fixed latch member. The movable latch member has a lip at its distal end extending outwardly so that the lips of the respective latch member extend away from one another. The piston is movable inwardly with respect to the housing so that the latch members can be inserted into the disk drive slot, and thereafter the piston moves outwardly so that the lips of the latch members engage the corners of the slot. A lock mechanism is located in the lock receiving chamber of the housing.