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| Number | Title | Issue Date |
| 7975436 | Utility trench cover and manufacturing method A cover for a utility trench includes upper and lower surfaces enclosing a hollow cavity, which is subdivided by multiple, transverse channels recessed into an extending transversely across the lower surface. The channels form fused engagements or “kiss offs” wi... | 07/12/2011 |
| 7966772 | Tubular insert for excavated hole with safety cover A tubular insert sleeve for an excavated hole and a safety cover fitted to cover an operatively upper end of the insert sleeve are provided to maintain the integrity of an excavated hole and limit access to the hole in order to improve the safety of the public. The ... | 06/28/2011 |
| 7908798 | Device for closing a frame having a panel articulated on the frame A device for closing a frame, which has a panel mounted removably on and articulated on the frame includes a hook that has, at an end part, a heel that can stop against a surface of the articulation edge of the frame to immobilize the panel in a secure open upright ... | 03/22/2011 |
| 7802402 | Crawl space access device A crawl space access device is capable of being placed in a below grade level crawl space entry pit, and mating with the below grade opening in a building wall. The crawl space access device includes a body member having a base portion restable on a horizontal surfa... | 09/28/2010 |
| 7774988 | Inspection chamber, as well as set of base parts therefor An inspection chamber having a plastic sleeve, a plastic base accommodated in the sleeve and at least two branches connected to the sleeve, which base has a flow profile that extends between the two branches. The base is made up of at least two separate base parts t... | 08/17/2010 |
| 7712259 | Sump cover system for underground liquid storage tanks A quick, field installed sump cover system for below ground sumps includes a support ring, a seal between the ring and sump upper lip, preferably two compression brackets each having two spaced regions extending under riser parts, at least one elongated member coupl... | 05/11/2010 |
| 7627992 | Stackable riser and cover configuration A stackable riser section having a single side wall having a first open end defined by an edge and a second open, channel end. The riser section includes a plurality of bosses extending to the first open end and connected to an interior surface of the sidewall by na... | 12/08/2009 |
| 7516575 | Rooftop opening safety railing An improved safety railing for use with an opening in a rooftop or other location. The safety railing is easily securable to the curb, or upstanding wall, surrounding the opening. The securing mechanism of the safety railing also takes advantage of any outwardly pro... | 04/14/2009 |
| 7451570 | Casting riser pan A casting riser pan for defining an access opening in a cast concrete structure, serving as a cast for a cover for closing the access opening, and serving as a seat for the cover. The casting riser pan includes an orientation element for orienting the cover in case ... | 11/18/2008 |
| 7438498 | Security system for sewage, aqueduct, telephony and energy caps Security System for Sewer, Aqueduct, Telephone and Energy System Manhole Caps or Covers including an electromechanical cover (1), on the surface of which is placed an electromagnetic crane (2) that has a handle (3), and that has an emitting coil... | 10/21/2008 |
| 7428800 | In-ground shelter An improved shelter of the type having a front wall, a back wall, two opposing side walls, a bottom and a top defining a substantially rectangular box with an opening defined in the top, a flat lid adapted to cover the opening, a roller means for alternately rolling... | 09/30/2008 |
| 7401998 | Construction of a foamed polymeric manhole chimney A stackable polymeric foam adjustment or grade ring is provided for the construction of the adjustment courses or manhole chimney portion of a sewer system. The adjustment ring is circular and may include concentric annular grooves on at least one surface and male p... | 07/22/2008 |
| 7361834 | Electric handhole/pullbox access cover A lightweight plastic cover for an electric handhole or pullbox having a plurality of vertical channels in a circular array at a radius about halfway from the center to the circumference. The channels allow the cover to bend when a large weight is applied and to reb... | 04/22/2008 |
| 7356968 | Polymer composite basement door Cellar or bulk head doors having sidewalls are provided which are made of a polymer and which are strong, durable, attractive, virtually maintenance free, easily assembled, have connection and anchorage points which allow the door assembly to be used over a wide tem... | 04/15/2008 |
| 7354220 | Utility cover system A utility cover system and method of covering and sealing an access cover for a utility entrance within a road surface. The utility cover system includes an outer frame having an opening defined by an inner edge, and a wedge cover of resilient material having an out... | 04/08/2008 |
| 7350827 | Cam expansion ring assembly An expansion ring assembly and method for sealingly installing a gasket within an opening in a wall of a structure. The expansion ring assembly includes an expansion ring having first and second adjacent end portions, and first and second cam members are rotatably c... | 04/01/2008 |
| 7347644 | Multi-use adapter ring for stackable riser components for on-site waste systems A multi-use adapter ring for converting the compatibility of an access opening of an underground on-site waste or drainage facility tank surface or component so as to receive a lower end of a riser component, in a tongue-and-groove type connection, to help achieve a... | 03/25/2008 |
| 7341398 | Lift-assisted manhole cover A lift-assisted manhole cover assembly with a flush surface and external pivot shaft. The cover includes a mounting tab that extends beyond the general periphery of the cover. The mounting tab may be connected to a shaft that is threadedly engaged with the frame. A ... | 03/11/2008 |
| 7337584 | Insulated ceiling hatch A ceiling hatch employs a frame having an upper edge and a lower edge and a passage bounded by a sidewall passing therebetween, the passage extending from the lower edge to the upper edge and having its minimum cross section at the lower edge. This frame is employed... | 03/04/2008 |
| 7322442 | Ladder top walk through extensions Walk through ladder extensions are provided to attach to the upper ends of ladder side rails, and define a wide unobstructed space between them. The extensions can be gripped by a user to steady the user as the user moves onto a roof of a building against which the ... | 01/29/2008 |
| 7313889 | Temporary ground-level road-edge member and method for positioning below-ground structures A template for temporary placement on the open upper end of a below-ground structure, including a rectangular body matching key dimensions of a permanent ground-level member to be installed, the body having an open bottom to engage the open upper end of the below-gr... | 01/01/2008 |
| 7266926 | Temporary ground-level member and method for positioning below-ground structures A template for temporary placement on the open upper end of a below-ground structure, including a body matching key dimensions of a permanent ground-level member to be installed, the body having an open bottom to engage the open upper end of the below-ground structu... | 09/11/2007 |
| 7251914 | Frame mount latch assembly for subsurface aircraft servicing pit A subsurface aircraft servicing pit is provided with a hold down assembly that secures a pit lid mounting frame in position on a bearing seat at the top of a prefabricated pit enclosure. A frame mount latch ring is suspended in spaced relation beneath the underside ... | 08/07/2007 |
| 7229233 | Double walled containment sumps A double walled riser sump has an annular space between the two walls. The provision of the annular space provides for monitoring the integrity of the two walls of the sump. The two walls of the sump are preferably separated by a thin film or a distance fabric that ... | 06/12/2007 |
| 7225587 | Cover system for septic tank A cover system for septic tanks adapted to be attached to the a septic tank and provide access for repair and maintenance. The assembly includes a base which is embedded into the concrete and provides a seal between the concrete and the base. A pipe member is joined... | 06/05/2007 |
| 7223051 | Removable maintenance port with method for rehabilitating manhole A removably insertable apparatus for creating and accessing manholes and a method for rehabilitating manhole structures and the like, using the apparatus. The apparatus comprises two sections, both of which are load bearing composite materials such as reinforced fib... | 05/29/2007 |
| 7216459 | Access hatch cover assembly with lift-assist assembly and method therefor A hatch cover with spring assembly to assist in lifting open the hatch cover lid. The lid is hinged to a frame so it can be rotated about the hinge to an open position. A spring or a pair of springs are attached to the underside of the lid. Each spring is a torsion ... | 05/15/2007 |
| 7213528 | Bulkhead door for a vessel A bulkhead door for watertight closing of a bulkhead opening of a naval vessel, comprising a composite outer shell and inner shell, a chamber therebetween, and a channel along the door margin for retaining a gasket without adhesive. The chamber may be filled with a ... | 05/08/2007 |
| 7213530 | Hatch or door system for securing and sealing openings in marine vessels A hatch or door system for closing an opening in a surrounding structure has a panel assembly having a metal frame enclosing a composite material panel. An operating mechanism is operative in a first stage to hold the panel assembly in the closed position. In a seco... | 05/08/2007 |
| 7210421 | Latch system for a watertight bulkhead door A latch system for a watertight bulkhead door for closing a bulkhead opening. A plurality of surrounding shield elements are translated by an articulated mechanism into and out of locking engagement with the bulkhead door. A continuous wedged striker along the perip... | 05/01/2007 |
| 7201534 | Apparatus and method to secure manhole accessways A manhole access way security apparatus and method for using the security apparatus are disclosed. The security apparatus includes an insert, at least one locking pin and a locking mechanism each interconnected to allow users to easily and quickly install a security... | 04/10/2007 |
| 7201532 | Method and device for adjusting height of manhole A method and a device for safely and efficiently adjusting the height of a manhole freely allowing the addition and removal of a height adjusting member at any position. The method and device may be used for the manhole formed by installing a tubular shaped frame in... | 04/10/2007 |
| 7178686 | Rotationally molded subterranean tank with riser A subterranean tank assembly is provided which broadly includes a vessel, a cover, and a riser which is configured to permit the riser to be adjusted in axial length at the job site. The riser is configured to permit coupling of the cover to the topmost connector po... | 02/20/2007 |
| 7178290 | Manhole cover having a locking crossbar A pit cover includes a casing, a cross bar and cover plate. The casing has a peripheral wall in the general shape of a rectangle, with open opposite ends and. The cross bar is coupled to and extends across the wall on an inside of the casing. The cover plate is conf... | 02/20/2007 |
| 7171786 | Window well A modular window well arrangement includes one or more window well members. The window well members can be interconnected in a vertically stacked arrangement to provide the required overall height. Snap-connectors interconnect the vertically adjacent window well mem... | 02/06/2007 |
| 7171994 | Spillage containment system and kit for underground storage tanks A matter-isolating system for use in combination with an underground storage tank assembly comprises primary and secondary spillage containment assemblies and a double-walled manhole assembly. The manhole assembly comprises a manhole lid, an outer skirt wall, and an... | 02/06/2007 |
| 7165911 | Manhole cover riser assembly A riser assembly for supporting a manhole cover is placed within a manhole frame for raising the height of the manhole cover to pavement level. The riser assembly includes a circular frame formed of a metal bar and has a locking ring attached thereto which extends v... | 01/23/2007 |
| 7163352 | Utilities access closure A concrete lid for an in-ground utilities box includes a plastic reinforcement structure filled with concrete. The plastic reinforcement structure includes one or more plastic sidewalls that protect the edges of the lid from damage. The upper and lower surfaces of t... | 01/16/2007 |
| 7160050 | Lockable manhole cover A manhole system including a cover, a frame receiving the cover and at least one security device securing the cover to the frame. ... | 01/09/2007 |
| 7157642 | Handhole reinforcing frame for round utility poles A frame for reinforcing a handhole of a round metallic utility pole, includes a generally elliptical body defining a major axis and a minor axis and forming a generally elliptical outer periphery, and a generally elliptical inner periphery bordering an opening exten... | 01/02/2007 |
