Patent ID: 7188870

Claim:
A multi-functional mortise lock comprising: a casing having a front plate for confronting a door frame, a first sidewall and an opposed second sidewall; a latch bolt movable with respect to the casing between an extended position and a retracted position; at least one spindle hub adapted for connection to a spindle projecting from a handle, the at least one spindle hub acting to move the latch bolt to the retracted position when rotated; a latch retract lever for moving the latch bolt between the extended and retracted positions; a control hub operably connected to the latch retract lever to move the latch bolt between the extended and retracted positions; a latch retract blocking element positionable to block the latch retract lever to prevent the control hub from retracting the latch bolt, the latch retract blocking element being positionable without removing the first or second sidewall from the mortise lock to block or unblock the latch retract lever; an interfering member movable between a locked position in which the interfering member interferingly engages the at least one spindle hub to prevent rotation thereof and an unlocked position in which the interfering member is disengaged from the at least one spindle hub; a lock/unlock lever for moving the interfering member between the locked and unlocked positions, the control hub being operably connected to the lock/unlock lever to move the interfering member between the locked and unlocked positions; and a lock/unlock blocking element positionable to block the lock/unlock lever to prevent the control hub from moving the lock/unlock lever between the locked and unlocked positions, the lock/unlock blocking element being positionable without removing the first or second sidewall from the mortise lock to block or unblock the lock/unlock lever.