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| Application No. | Application Title | Issue Date |
| 20110243658 | Apparatus and method for repairing an existing spill containment manhole An apparatus for repairing an existing spill containment manhole operably associated with an underground fuel storage tank. The apparatus includes a containment vessel for containing fuel spilled during filling of the underground fuel storage tank. A major portion of th... | 10/06/2011 |
| 20110222964 | HIGHWAY DEVICE, IN PARTICULAR MANHOLE, WITH FRAME AND PLUG WITH BACKWARD MOVEMENT RELATIVE TO THE FRAME TO ENSURE THE CLOSED POSITION OF THE PLUG IN THE FRAME A manhole includes a frame and plug, which moves backward relative to the frame, to ensure the plug reaches a proper closed position in the frame. A first end of a self-locking arm of the structure is pivotally mounted to the frame, and can slide in a fixed guiding groo... | 09/15/2011 |
| 20100178106 | METHOD AND APPARATUS FOR RAISING MANHOLE CASTINGS The specification discloses apparatus and a process in which the stack of concrete or hard rubber spacer rings used in raising manholes is eliminated. It is replaced with a sleeve which is taller than the required distance between the top of the manhole and the level at... | 07/15/2010 |
| 20100124458 | Integrated frame and cover system A system and method are provided for coupling a manhole cover to an underground utility box to support the manhole cover substantially flush with a ground surface such as a roadway. A holder couples to an underground utility box and includes upper and lower ends and a c... | 05/20/2010 |
| 20090324329 | Manhole Cover for Preventing Inflow of Bad Smell and Harmful Insect A manhole cover for preventing the inflow of a bad smell and a harmful insect is provided. More particularly, the manhole cover includes a manhole top plate that has a plurality of drainage holes and a display part; a drainage guide plate that is integrally formed in a ... | 12/31/2009 |
| 20090297265 | B-W manhole cover-cover Depressed manhole covers affect vehicles negatively. The B-W Manhole Cover-Cover is a recycled rubber disc attached to the existing manhole cover with toggle-bolts. It will provide proper elevation.... | 12/03/2009 |
| 20090290934 | THERMALLY AND ELECTRICALLY INSULATED COMPOSITE MANHOLE COVERS A manhole cover includes a support having an upper surface and a peripherally-extending portion. An outer insulating member is disposed over the entire upper surface of the support, and the support comprises a first material and the outer insulating member comprises a s... | 11/26/2009 |
| 20090214292 | Encapsulated manhole cover Embodiments of the present invention relate to a cover for a manhole or similar structure that encapsulates a traditional cover so as to extend the height of the cover. Generally, a conventional manhole cover is partially or entirely encapsulated in polyurethane to chan... | 08/27/2009 |
| 20090148234 | Apparatus and method for raising the elevation of a catch basin An apparatus and a method are provided for raising the elevation of a catch basin during reconstruction or repaving of roadways in order to raise the elevation of existing catch basin grills to that of the new elevation of the modified roadway. The improved catch basin ... | 06/11/2009 |
| 20080267702 | Manhole leveler An apparatus that automatically levels a manhole upon placement of the manhole in the road. The preferred embodiment includes a support beam, two clamping units and two carrying handles. The clamping units contact the top of the manhole and clamp the manhole to the bott... | 10/30/2008 |
| 20080138153 | 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 spri... | 06/12/2008 |
| 20070081857 | Four parts manhole enabling an easy install and height adjustment A manhole comprised of four parts is provided. The manhole is comprised of an outer-manhole pipe, an inner-manhole pipe, a manhole cover, and a support pipe. Pluralities of concave arc band shape blades are horizontally developed along the inner surface of the outer man... | 04/12/2007 |
| 20070031190 | 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 and m... | 02/08/2007 |
| 20060177266 | Manhole cover removal apparatus and method of use An apparatus for separating and lifting a manhole cover from a cover mounting ring without disturbing the mounting ring includes a body, a lever arm and lifting arm pivotally connected to the body with the outer end of the lifting arm extending outwardly from the first ... | 08/10/2006 |
| 20060088378 | Frame for a recess in the ground and manhole assembly A frame for bounding an open end of a recess includes an upstanding, peripheral wall having protruding outwardly therefrom a flange. The frame includes, within the peripheral wall, plural seatings for a cover that is insertable into the frame. Each seating includes a se... | 04/27/2006 |
| 20060078381 | 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 verti... | 04/13/2006 |
| 20060078382 | 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 porti... | 04/13/2006 |
| 20050232696 | System for supporting and leveling paving stones A system of pieces for adding to variable height and variable angle supports made by cutting standard pipe to a desired height for supporting square or rectangular paving stones or other solid materials (pavers) for making a planer surface. The system includes a spacer ... | 10/20/2005 |
| 20050058505 | Method and apparatus for adjusting the height and inclination of roadway and greenway appurtenances An apparatus for adjusting the height and inclination of roadway and greenway appurtenances includes a rigid annular support ring mountable onto a rigid annular spacer ring sized so as to be mountable onto a manhole and a manhole frame mountable onto the support ring. T... | 03/17/2005 |
| 20050002735 | Manhole lift insert with frangible positioner A manhole lift insert with a socket portion and a frangible portion that is inserted in a pre-positioned bushing in the outer wall of a manhole form. A key in the sleeve portion may be received in a keyway in the bushing in the form wall so that the insert is properly o... | 01/06/2005 |
