Tamper-Proof Irrigation Box

Abstract

A tamper-proof irrigation box is formed in a truncated four-sided pyramid shape with the sides tapering outwardly from the top to the bottom. A horizontal flange extends outwardly around the base. A metal lid has a sliding pin type lock operated by a key having a metal horizontal pin or bolt that extends perpendicularly into a horizontal hole in the side of the box. The metal lid also has a tamper-proof hinge.

1 . A tamper-proof irrigation box device comprising:
 a hollow rigid box housing at least one valve and at least one pipe for an irrigation system, the hollow rigid box having sides which slant outwardly from a narrower top to a wider bottom and a horizontal flange extending outwardly around the base to prevent the box from being pulled out of the ground, and a recessed interior ledge around a perimeter of a top opening in the box;   a metal planar lid resting on the recessed interior ledge within the perimeter of the top opening so that a top of the lid is aligned with a top edge of the top opening, the lid comprising a rigid planar element to seal the top opening closed;   a sliding pin lock installed in the lid centrally positioned along a first edge of the lid, the lock comprising a horizontal slidable pin reversibly extending out from and retracting into the first edge parallel to the top of the lid and perpendicular to the first edge of the lid and perpendicular to a first side of the box into a horizontal hole in a first side of the box, the sliding pin lock operated by a key in a key opening on a top of the lock to lock the lid in place on the box and alternately unlock the lid to access an interior of the box; and   a tamper-proof hinge pivotally interconnecting a second edge of the lid with a second side of the box.   
   
   
       2 . The device of  claim 1  wherein the box comprises a truncated four-sided pyramid shape with the sides tapering outwardly from the top to the bottom. 
   
   
       3 . The device of  claim 1  wherein the tamper-proof hinge comprises a horizontal pin type hinge. 
   
   
       4 . The device of  claim 1  wherein the tamper-proof hinge comprises an enclosed horizontal hinge.