Patent ID: 11873661
Assignee: ASSA ABLOY GLOBAL SOLUTIONS AB
Field: Civil engineering (Other fields)
Classification: CPC E | IPC E

Claim 0:
1. A key storage device comprising:
a tubular housing having an open proximal end and a distal end;
a sliding carriage insertable into the proximal end of the housing, the sliding carriage comprising a compartment for a key to be stored, the sliding carriage being displaceable between an open position, in which a majority of the sliding carriage is outside of the housing and the compartment is accessible for key retrieval, and a closed position, in which the majority of the sliding carriage is inside the housing and the compartment is inaccessible;
a control unit;
a lock mechanism arranged within the tubular housing, the lock mechanism having a locked state, in which the sliding carriage is kept locked in its closed position and prevented from being displaced to its open position, and the lock mechanism having an unlocked state, in which the sliding carriage may be displaced to its open position, said lock mechanism comprising an electric motor-actuated piston member and a catch member which are both movable between respective first positions in the locked state of the lock mechanism and respective second positions in the unlocked state of the lock mechanism; and
an electric motor coupled for causing movement of the piston member of the lock mechanism, wherein the electric motor comprises a drive shaft being operatively connected to a screw which is engaged with a nut which is in contact with the piston member, wherein the drive shaft rotates upon actuation of the motor and causes rotation of the screw which drives the nut to push the piston member between its first and second positions;
wherein the control unit is adapted to cause the lock mechanism to switch from its unlocked state to its locked state by actuating the motor and thereby causing movement of the piston member from its second position to its first position, the movement of the piston member in turn causing movement of the catch member from its second position to its first position; and
wherein the control unit is adapted, based on an external input, to cause the lock mechanism to switch from its locked state to its unlocked state by actuating the motor and thereby causing movement of the piston member from its first position to its second position, the movement of the piston member in turn enabling movement of the catch member from its first position to its second position.