Abstract: A utility meter box lock construction includes a male assembly having a male body which is bolted to the front wall of the utility meter box with a threaded bolt having an annular groove which is locked to the male body by a set screw. The lid is secured in place in a closed condition by a conventional utility plunger lock which is assembled to a female assembly having a bore which aligns with a bore in the male body. A threaded insert is threaded to the male body in the bore which is aligned with a second bore in the female assembly for receiving the plunger lock. The balls of the plunger lock are expandable to an extension locking state for mating with a groove in the insert threaded to the male body. The position of the plunger balls is set along the plunger bore by rotation of the threaded insert for ensuring that the female member with a lid-locking flange closely closes the lid of the box to the box sidewalls.

Abstract: An improved security seal includes a plastic housing with a chamber open at one end and a plastic rotor which is insertable in the chamber. The housing wall contains bores aligned across the chamber and two annular grooves adjacent the chamber entrance. Tabs are formed adjacent the chamber entrance. The rotor has a bore and two annular ridges near its top. The ridges are relieved complementarily to the tabs. The rotor may be partially inserted in the housing by snapping the lower ridge into the upper groove and locating the tabs in the relieved areas to align all of the bores so that a seal wire may thereafter be inserted through the seal. The ridge-groove and tab-relief cooperation prevent inadvertent relative rotation of the rotor and housing and full insertion of the rotor. With a seal wire inserted, the rotor and housing are relatively rotated to wrap the wire about the rotor. The rotor is then fully inserted into the housing so each ridge snaps into one groove.