A battery lock mechanism includes a first sliding operation member and a second sliding operation member. When the second sliding operation member is operated, a battery is released from a locked condition. Initially, an operation knob of the first sliding operation member is exposed through a rectangular window. When the first sliding operation member is driven in a first direction, the operation knob of the second sliding operation member is exposed through the rectangular window so that the second sliding operation member becomes movable in a second direction different from the first direction.

A movable cover device for an automobile lock, comprising a plate supporting the lock operating actuator and fixed to a wall of an automobile compartment, and a cover pivoted on the plate, the device having in the cover an area substantially equal to that of the plate and is provided with a pivot substantially orthogonal to its wall and rotatably supported by a bush which is rigid with the plate and is also orthogonal to its wall, so that the walls of the plate and of the cover are in contact, at least when they are completely superposed.

A deck lid latch has a rotatable clock cylinder accessible through an escutcheon having a pivotally mounted cover. A detent is effective upon movement of the cover to the open position to hold the cover in the open position. The detent is released in response to rotation of the lock cylinder so that the cover is moved to the closed position by a bias spring. A gear is rotatably mounted on the escutcheon and has gear teeth meshing with gear teeth displayed on the cover in an arcuate path about the pivot axis of the cover so that pivotal movement of the cover rotates the gear. A viscous damper is associated with the gear to retard rotary movement of the gear and thereby retard the closing movement of the cover in a time delayed fashion which gives the operator time to withdraw the key and his fingers from proximity with the spring biased cover prior to the cover reaching the closed position.

A locker unit comprises a plurality of lockers provided with doors equipped with a locking device. The locking device consists of a mechanical lock and an auxiliary lock having an electric drive for said device. The locking device comprises a rest position which blocks the access to the mechanical lock and/or its movement, and an opening position which frees said access and/or said movement.

A lock cylinder replacement device for replacing locks is inserted into a lock cylinder hole or sleeve after a lock cylinder is removed from the lock cylinder hole or sleeve. The lock cylinder replacement device includes a threaded bolt and a pan head portion. The lock cylinder replacement device may also include a rear fastening plate and a mounting nut for mating with the threaded bolt to secure the lock cylinder replacement device in the lock cylinder hole or sleeve.