Multiple lock assembly

A lock assembly for locking and unlocking a door comprising:

• a lock bar movable a predetermined distance between a first position locking said door and a second position unlocking said door;
• three spaced-apart locks, each of said locks having a lock arm movable a set distance between a locked position and an unlocked position;
• a first link connected at one end to the lock arm of a first of said locks and connected at the other end to the lock arm of a second of said locks;
• a second link connected at one end to said first link and connected at the other end to the lock arm of a third of said locks;
• and
• a connecting means for connecting said second link to said lock bar at a first location, said first and second links being dimensioned such that either the movement of the lock arms of a predetermined pair of locks or the movement of the lock arm of a predetermined third lock causes said lock bar to move from said first to said second position when said connection means is at said first location.

A lock assembly for use on a security door for locking and unlocking said security door, said lock assembly comprised of:

• a lock component movable a predetermined distance between a first position locking said door and a second position unlocking said door;
• three spaced-apart locks, each of said locks having a lock arm movable a specific distance between a locked position and an unlocked position;
• a linkage for connecting said locks to said lock component to cause movement of said lock component in response to movement of each of said lock arms;
• said linkage comprised of a plurality of linkage members which are interconnected by pins for relative motion, said linkage having a first pin location and a second pin location, wherein when a connecting pin is in said first pin location said linkage assumes a first operating configuration and when the connecting pin is in said second pin location said linkage assuming a second operating configuration, when in said first operating configuration movement of the lock arms of any two of said three locks from said locked position to said unlocked position causes said linkage to move said lock components to said second position, and when in said second operating configuration movement of the lock arms of a specific two of said three locks or movement of the lock arm of the remaining of said three locks causes said linkage to move said lock component to said second position.