Patent ID: 8166706

Claim:
A ground mounted vault closure selectively positionable between closed, partially opened, and fully opened orientations, the closure comprising: a rectangular frame having inner and outer peripheral extents, a series of anchor studs positioned upon the outer peripheral extent, a female receiver formed within the frame, the frame being mounted into the ground and defining an access opening for an underground vault; a vault door having interior and exterior surfaces and peripheral edges, the interior surface including reinforcing ribs, a slide with opposing first and second locking detents secured to one of the peripheral edges, the vault door further including a pair of lifting handles and a male detent, the vault door being pivotally connected to the frame and having a closed orientation overlying the rectangular frame and wherein the male detent is receivable within the female receiver to lock the door and deter access to the underground vault, the angle between vault door and the frame being approximately 90 degrees in the partially opened orientation, and the angle between the vault door and the frame being approximately 180 degrees in the fully opened orientation; a one piece hold-open arm having first and second ends and an intermediate extent therebetween, a vinyl grip secured to the intermediate extent, the second end of the arm being slidably received within the slide and being selectively positionable between the first and second locking detents; a hinge plate having a first end rotatably secured to the frame and a second end that is secured to the first end of the hold-open arm, a striker plate with an aperture secured to the second end of the hinge plate, the hinge plate pivoting between a first orientation parallel to the frame and a second orientation perpendicular to the frame, wherein the door is in the closed orientation with the hinge plate in the first orientation and the second end of the hold-open arm in the first detent, and wherein the door is in the partially opened orientation with the hinge plate in the first orientation and the second end of the hold-open arm in the second detent, and wherein the door is in the fully opened orientation with the hinge plate in the second orientation and the second end of the hold-open arm in the second detent; a locking mechanism positioned within inner peripheral extent of the frame and adjacent the hinge plate, the locking mechanism including an outer bracket, the outer bracket housing a spring biased locking pin and an upstanding locking bolt, whereby the locking pin can be selectively secured within the aperture of the striker plate to thereby lock the hinge plate in the first orientation, and wherein the locking bolt can be used to overcome the spring bias of the locking pin to thereby release the hinge plate and permit rotation of the hinge plate from the first to the second orientation.