Patent ID: 6763967
Filing Date: 2004-07-20
Classification: F16L

Abstract:
A locking lid apparatus comprising, in combination:a closure; an annular external seal positioned about an exterior portion of said closure and projecting upwardly and outwardly; a threaded actuator spindle positioned through an opening in said closure; an actuator follower having a plurality of arms positioned below an underside of said closure; wherein said actual follower includes a threaded opening therein adapted to receive said threaded actuator spindle; a locking pawl pivotally coupled at a first end thereof to one said arm; wherein a second end of said locking pawl is adapted to engage an underside of a valve box lid seat; a locking pawl retainer and pivot adapted to pivotally retain said locking pawl proximate said second end thereof; wherein, when said closure is in position on a valve box, downward movement of said actuator follower causes said second end to move into engagement with said underside of said valve box lid seat.