A lockable manhole cover includes, for example, a manhole cover installable in an opening in a manhole frame, a locking member attached via a pin and slot arrangement beneath the manhole cover, and a lever pivotally attached to the manhole cover. A lower end portion of the lever is operably engageable with the locking member to move the locking member relative to the manhole cover. The lever is disposable in a lowered position so that an end portion of the locking member is operably engageable with a portion of the manhole frame for use in inhibiting removal of the lockable manhole cover from the manhole frame. The lever is disposable in a raised position so that the end portion of the locking member is operably disengageable with the portion of the manhole frame to allow removal or installation of the lockable manhole cover from or in the manhole frame.

Pick hole guards are provided for use in guarding pick holes on manhole covers. In some embodiments of the present disclosure, the pick hole guards can have a base, biasing member, and guard member. The biasing member can be attached to the base and guard member, and can bias the guard member toward a pick hole on the manhole cover to guard the pick hole. In other embodiments, the pick hole guards do not have movable guard members, but instead have retaining surfaces to serve as a receptacle for catching waste disposed through a pick hole.

A tubular insert sleeve system comprises a tubular insert sleeve for insertion into an excavated hole and a snug fitting and removable safety cover adapted to extend over the upper end of the tubular insert sleeve in order to cover the excavated hole. One or more sleeve fastening apertures are defined through the tubular insert sleeve adjacent the upper end thereof, and are adapted to receive one or more vermiform fasteners for fastening the safety cover to the tubular insert sleeve. Preferably, the sleeve fastening apertures are in the form of handles. In some embodiments, one or more cover fastening apertures are defined through the safety cover and the cover fastening aperture(s) cooperate with the sleeve fastening aperture(s) to receive the vermiform fastener(s) to fasten the safety cover to the tubular insert sleeve.

A mechanical closure device comprises an enclosure having four sides, a top and bottom and defining a discharge opening at the bottom. A floodgate assembly is interiorly removably mounted to the enclosure and comprises a pair of doors pivoted on a hinge assembly between an opened position and closed position. In the closed position, the doors seal against the flange to prevent passage of water through the discharge opening. A discharge drain assembly is preferably disposed on one door and has an opened and a closed position. An appendage is provided to facilitate opening and of the door. Upon removal, the floodgate assembly is stably positionable on a multipositionable service rack. A multipurpose tool is employed unlatching the floodgate doors and slidably removing the floodgate assembly.

The present invention relates to a secure barrier for an underground valve box. The device may have a bolt and a nut for adjusting the length of the bolt to position curved plates to press against the inner circumference of a cylindrical valve box. The bolt housing may include a flange that protrudes through a slot in a horizontal metal plate. The plate may have handles for ease of lifting and replacement of the plate. The protruding flange may feature a hole for insertion of a padlock. When the padlock is secured, the plate cannot be removed from the cylindrical valve box as the adjustable bolt housing cannot move sufficiently to retract the curved plates from the inner cylindrical surface of the valve box. Thus, only authorized personnel with the proper padlock key or combination can operate the valve, deterring vandals.

A tubular insert sleeve system comprises a tubular insert sleeve for insertion into an excavated hole and a snug fitting and removable safety cover adapted to extend over the upper end of the tubular insert sleeve in order to cover the excavated hole. One or more sleeve fastening apertures are defined through the tubular insert sleeve adjacent the upper end thereof, and are adapted to receive one or more vermiform fasteners for fastening the safety cover to the tubular insert sleeve. Preferably, the sleeve fastening apertures are in the form of handles. In some embodiments, one or more cover fastening apertures are defined through the safety cover and the cover fastening aperture(s) cooperate with the sleeve fastening aperture(s) to receive the vermiform fastener(s) to fasten the safety cover to the tubular insert sleeve.

A locking cover apparatus for construction vaults. The cover has a latch portion configured to rotate in a first and second direction when a threaded locking security bolt is rotated in the first and second direction respectively, and where the cover is locked from removal from the vault when the latch portion comes into contact with a first stop mechanism after rotating in the first direction and wherein the cover is unlocked when the latch portion comes into contact with a second stop mechanism after rotating in the second direction.

The present invention relates to a secure barrier for an underground valve box. The device may have a bolt and a nut for adjusting the length of the bolt to position curved plates to press against the inner circumference of a cylindrical valve box. The bolt housing may include a flange that protrudes through a slot in a horizontal metal plate. The plate may have handles for ease of lifting and replacement of the plate. The protruding flange may feature a hole for insertion of a padlock. When the padlock is secured, the plate cannot be removed from the cylindrical valve box as the adjustable bolt housing cannot move sufficiently to retract the curved plates from the inner cylindrical surface of the valve box. Thus, only authorized personnel with the proper padlock key or combination can operate the valve, deterring vandals.

A locking cover for existing subgrade vault openings. The cover is installed with mounting brackets on side walls of construction vaults and secured with locking latch components secured against flange portions of the mounting brackets.

Pick hole guards are provided for use in guarding pick holes on manhole covers. In some embodiments of the present disclosure, the pick hole guards can have a base, biasing member, and guard member. The biasing member can be attached to the base and guard member, and can bias the guard member toward a pick hole on the manhole cover to guard the pick hole. In other embodiments, the pick hole guards do not have movable guard members, but instead have retaining surfaces to serve as a receptacle for catching waste disposed through a pick hole.