Multiple lock assembly

DETAILED DESCRIPTION OF PREFERRED EMBODIMENT Referring now to the drawings where the showing is for the purpose of illustrating a preferred embodiment of the invention and not for purpose of limiting same, FIG.
1 is a perspective front view of a vault door 10 incorporating a multiple lock assembly 20 according to the present invention.
Door 10 is mounted on hinges 12 to a door frame 14 which is formed or cast within a vault wall 16 in a conventionally known manner.
A handle 18 is provided together with a lock assembly 20 to open (i.
e.
, release) vault door 10 as will be described in greater detail below.
Referring now to FIG.
2, the internal components of door 10 are shown from the rear or back side of door 10.
Door 10 includes a lock assembly platform 22 on which lock assembly 20 is mounted.
A locking cam 24 is mounted to handle 18 for rotation therewith.
Locking cam 24 includes a first arm 24a for operable engagement with lock assembly 20, and a second arm 24b which is connected to vault works 30.
Vault works 30 includes a connector plate 32 which is pinned at one end to arm 24b of locking cam 24, and is pinned at the other end to a bolt bar 34.
A plurality of locking bolts 36 extend from one side of bolt bar 34 through a re-enforcing beam 38 provided along the inner edge of vault door 10.
A plurality of recesses formed in door frame 14 are provided to be in registry with locking bolts 36 and receive same therein when the vault door 10 is in its locked position.
A pair of brackets 42 extend from the other side of bolt bar 34.
Each bracket 42 includes an elongated slot 44 which is dimensioned to receive a pin or bolt 46.
Slots 44 are parallel to the axis of lock bolts 36 to facilitate movement of bolt bar 34 along an axis which is generally parallel to the axes of locking bolts 36.
Guide rods 48 are mechanically attached to one end of brackets 42 and extend from brackets 42 through apertures in secondary brackets 50.
Limit switches 52, 54 may be provided to monitor the operation and/or relative position of the respective door components