An example manhole cover assembly includes a manhole cover and a latch assembly. The manhole cover is supportable by a seat of a manhole frame. The latch assembly includes a latch housing fixedly coupled to the manhole cover. A latch plunger is slidably coupled to the latch housing. The latch plunger includes a follower arm. A latch lever is rotatably coupled to the latch housing. The latch lever includes a stop. The latch lever is rotatable relative to the latch housing between a locked position and an unlocked position. The stop is structured to engage the manhole frame when the latch lever is rotated to unlocked position so as to force the manhole cover away from the frame.

A locking assembly attachable to a manhole cover includes an arm disposable in a lowered position with the arm disposed in a first orientation engageable with a manhole frame supporting the manhole cover to inhibit removal of the manhole cover from a manhole frame, and disposable in a raised position and in a second orientation operable to allow removal of the manhole cover from the manhole frame. In an embodiment, the locking assembly may include the arm attached to a movable member having a spiral, helix, or curved groove and in which the movable arm is receivable in a bushing and a pin receivable in the groove.

A selectively frictionally engaged hole cover for a bore hole cored from a paved surface that includes a cover plate configured to cover the bore hole and support vehicular traffic. An engagement mechanism is attached to the cover plate and extends down into the bore hole. The engagement mechanism is configured to be actuated by a user torque input that causes an engagement plate selectively shiftable relative to the cover plate to thereby shift an engagement member along a sloped wall and thus radially outwardly or inwardly, causing the engagement mechanism to selectively engage or disengage the wall of the bore hole. When the engagement member is in frictional contact with the hole, unintentional extraction of the engagement mechanism is prevented. The selectively frictionally engaged hole cover effectively provides a temporary cover for a bore hole in a road, parking lot, or other paved surface.

A dish for use in a manhole having a manhole cover covering a manhole opening and a frequency transmitting system for use in a manhole are provided. The dish and the frequency transmitting system is configured to transmit a signal to a network through the manhole cover. The signal is generated by a sensor unit disposed within the manhole and configured to detect the conditions of the manhole.

Disclosed is a hatch assembly with a gasket that seals when the hatch is closed. The sealed hatch assembly is fluid tight and prevents water, dust, or other contaminates from entering the enclosure protected by the hatch. In a preferred embodiment, the gasket is formed about a peripheral edge of the hatch door. This gasket is adapted to seat upon an L-shaped bracket formed about the periphery of the hatch frame. A center beam is also included for dividing the frame into two openings. The center beam includes a U-shaped bracket that can also form a seal with the gasket. The various components of the present disclosure, and the manner in which they interrelate, will be described in greater detail hereinafter.

Embodiments herein disclose a riser ring assembly. The riser ring assembly includes a riser ring shim attached to an inner part of a frame, and a gasket placed in a channel formed in the riser ring shim. The gasket maintains a watertight seal between the riser ring shim and the frame. The riser ring shim includes a plurality of paddle lock notches, a plurality of through holes, a plurality of counter sunk holes and a plurality of alignment marks, where dimension of the plurality of through holes is different from dimension of the plurality of counter sunk holes. Further, the riser ring assembly includes a top riser ring attached to an upper part of the frame, and a cover attached to an inner surface of the top riser ring.

An underground electrical utilities vault and distribution enclosure system having a grade level box having an upper opening facing an interior region for containing a below-ground electrical utility cable, a removable lid adapted for mounting to the opening in the grade level vault, and a pedestal housing, the pedestal housing having a vault adapter configured for replacing the removable lid for access to the interior region of the grade level vault that removably mounts in the upper opening, and an cover positioned over the adapter, the adapter and the vault having slidable doors covering openings to provide access to add additional electrical utility cables to the enclosure.

The disclosed embodiments include a secondary lid for installation in a riser. The secondary lid may comprise a top configured to cover an opening in the riser, an expandable ring configured to attach to an inner circumference of the riser, and wherein the expandable ring may comprise at least one hinge configured to attach the top to the expandable ring

The invention relates to a manhole cover (10) for a manhole covering (50) comprising at least one locking device (20) for locking the manhole cover (10) to a shaft frame (40) of the manhole covering (50), wherein the locking device (20) has a latch (21) which is movable between an unlocking position (I) and a locking position (II), and a monitoring device (30) for monitoring the locking, wherein the latch (21) is movable from the locking position (II) into a pressing position (III) in order to press the manhole cover (10) firmly against the shaft frame (40) during use, wherein the monitoring device (30) is designed to detect the unlocking position (I), the locking position (II), and the pressing position (III) of the latch (21).

A cover system including a hidden locking system for providing controlled entry into access holes provided in overpasses, bridges, roads, or freeways. The cover system includes a cover removably attached to a cover frame installed about an access hole. The cover includes locking elements to prevent tampering with the cover by unauthorized individuals. The locking elements include the coordinated function of cover brackets aligned with guide tubes that are used for inserting a tool for fastening or unfastening the cover, a tool post having windows that align with each guide tube for insertion of the tool, and an inner and outer plug to provide controlled access to the hidden locking system. The cover frame includes a frame plate having a frame opening to receive the cover plate therein, frame brackets, frame bracers, support rods, and frame supports for affixing the cover frame securely in position about an access hole.