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7574831 |
Riser pan component for on-site waste systems
An integrally formed riser pan member for use as a modular component within an access passageway for an on-site waste disposal system, such as a septic tank, to receivably retain a secondary cover...
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7571570 |
Recessed plaster collar assembly
A plaster collar assembly having a first ring, a second ring secured to the first ring, and a mechanism arranged at an outer periphery of at least one of the rings for axially displacing the first...
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7556055 |
Prevention of unwanted material accumulations
In one embodiment, the invention provides a rupture disk assembly having a rupture disk and a rupture disk holder. The rupture disk holder has a first annular member downstream of the rupture disk,...
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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...
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7491010 |
Road manhole
This road manhole comprises a frame ( 4 ) which delimits an opening ( 6 ) and which is provided with an internal collar ( 8 ) which extends radially inwards, a cover ( 10 ) which comprises a...
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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...
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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 )...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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7150582 |
Form for street box in underground storage tank installation
A form suitable for use in an underground storage tank installation includes an upper portion sized and shaped to receive a street box and a lower portion that fits over and surrounds an upper...
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7150580 |
Tapered manhole sealing band and method for use
The invention relates to a device and method for sealing a manhole structure. An elastomeric band with at least two different peripheries is sealingly engaged to at least two corresponding...
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7127849 |
Manway lift device having an adjustable biasing assembly therefor
A manway lift device comprises two hinge assemblies, each hinge assembly comprising a first hinge member, a second hinge member, a smooth bore bushing, an internally threaded bushing and an...
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7025529 |
Self-leveling system
Existing street sewers consist of an immobile concrete structure supporting a frame. The present invention, the self-leveling street sewer, comprises a frame that floats on the foundation of the...
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6997639 |
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...
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6986227 |
Stackable riser configuration
A stackable riser having a single side wall having a first open end defined by an edge and a second open channel end. A plurality of risers can be stacked on top of one another. The channel end of...
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6986226 |
Manhole water seal-cap/diverter
A device prevents water from leaking into a manhole. The device includes a body having first and second portions that are integrally formed. The first portion extends along and above a periphery of...
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6968854 |
Manhole base
A manhole base or liner for directing the flow of liquid from a manhole inlet opening positioned in one of a plurality of possible locations in a manhole side wall to a manhole outlet opening in...
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6966724 |
Manway and manhole particularly suited for negative pressure tank access ways
Method of replacing a blind flange manhole cover of the type including a bolted on blind flange mounted on a bolting flange of a negative pressure storage tank manway with a manhole cover having a...
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6953302 |
Adjustment riser for a manhole frame
An adjustment riser is disposed between a manhole and a frame embedded in the paved surface of a roadway. The adjustment riser includes an annular concrete base which includes substantially flat...
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6931793 |
Roof scuttle safety railing system
A roof scuttle safety railing system is provided for an existing or new roof scuttle which railing may be installed on the roof scuttle by unskilled labor without compromising the integrity of the...
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6925769 |
Concrete jar step insert
In accordance with the present invention there is provided an insert for placement in a mold for forming a concrete jar to form holes in the interior of the concrete jar for receiving steps and a...
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6887012 |
Cover apparatus for an access pipe opening
Cover apparatus for temporarily covering access openings for water, drain, manhole and overflow pipes when the access openings are exposed, such as during construction, to prevent dirt, dust or...
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6869249 |
Adjusting device for installing a manhole ring onto a manhole
An adjusting device for installing a manhole ring onto a manhole is provided. The manhole has an annular inner shoulder. The adjusting device comprises a center plate and at least one supporting...
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6861584 |
Flush-to-grade vault with wall-mounted cross-connect panels
A vault is contructed for mounting in the ground and formed with at least one wall defining an interior space. At least one cross-connect panel is mounted on the wall in stationery relation...
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6851225 |
Device for equalizing changes in level between a ground area surface and a frame for a manhole cover, and a method for mounting the device
A device for equalizing changes in level between a ground area surface extending over a ground structure and a frame for closure of an installation projecting into a ground structure therebelow,...
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6848226 |
Access panel
An access panel for providing access to cables, services or the like through an opening in a floor having a floor covering, is disclosed. The access panel includes a floor frame ( 10 ) located in...
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6799921 |
Manhole cover/frame exchange method
The present invention provides a manhole cover/frame exchange method capable of minimizing the size of a portion to be mended, of eliminating a pressing step by a roller machine, of...
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6773202 |
Device for covering shafts
A device for covering shafts of manholes in roads, ( 3 ) which is slideably guided in a covering ring ( 2 ) that is rigidly fixed on the shaft ( 1 ) proper, and a retaining ring ( 4 ) for receiving...
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6769834 |
Methods and apparatus for covering openings in roadways
A mat is disposed on top of an access cover to compensate for a vertical offset between the top of the cover and the top of the roadway surrounding the cover. Fasteners are inserted through aligned...
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6763967 |
Valve box locking lid and method therefor
A locking lid and method for a valve box. The locking lid has a closure and surrounding external seal, which fit into the valve box opening and close/seal it. The locking mechanism of the locking...
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6752565 |
Manhole cover system
A cover system in use with a pavement slab, a communicating and downwardly extending manhole tube extending from the slab. The system includes a substantially annular shaped and three dimensional...
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6743360 |
Manhole debris-catching system
A debris-catching system for preventing debris from falling into the pipe opening at the bottom of a manhole catch basin. The debris-catcher comprises two semi-circular halves hinged together such...
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6739796 |
High security manhole insert cover
The security manhole insert cover relates to a locking manhole insert to prevent ingress or egress to a manhole from above or below the manhole to prevent access to underground utilities, tunnels...
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6701676 |
Attic access apparatus
An attic access apparatus has a housing with a passage open to the attic and a door located in the passage for closing the passage. Insulating material in the passage above the door limits heat...
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6688807 |
Sealing device for a manhole
A sealing device that ensures the hermetic securing of the lid ( 5 ) in the access mouth ( 2 ) in order to prevent any infiltration of fluids from the outside or escape of gases from the interior. ...
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6688806 |
Jump-proof manhole-handhole
A manhole/handhole includes a cover and a frame base. A plurality of elastic fixtures are bonded below through holes of the frame base. The through holes are corresponding to fixing holes of the...
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6682258 |
Nondestructive system for adjusting manhole and catch-basin elevations
An assembly for adjusting the elevation of a structure such as a manhole or a catch basin to be surrounded by pavement. A one-piece is formed to be inserted between a base rim and a cover of the...
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6681528 |
Hatch safety railing system
A roof hatch safety railing to help prevent a person from accidentally falling through an open roof hatch while walking on a roof. The safety railing will comprise a top rail sufficiently high to...
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