Abrégé

A manhole cover assembly (10) configured to behave as a relief valve in an explosion event, opening so that fluid, such as air or explosive gas, may vent from an underground area. The manhole cover assembly (10) may include a manhole cover (12) and a frame (14), and may be configured to limit movement of the manhole cover (12) with respect to the frame (14) in response to increased pressure on the manhole cover (12). In one embodiment, the manhole cover may include legs (22,24,26) having angled surfaces adapted to substantially center or guide the manhole cover (12) in the frame (14) while the manhole cover (12) displaces to release pressure. In another embodiment, one or more legs (22,24,26) may be at least one of pivotable with respect to the manhole cover (12) and slidable within the manhole cover (12) to enable configuring the manhole cover (12) between a restraint mode and a removal mode.

Classes IPC  ?

• E02D 29/14 - Couvercles pour regards ou analoguesChâssis de couvercles

Abrégé

A manhole cover assembly includes a frame that includes a central opening and a safety stop portion, and a cover hingedly attached to the frame such that the cover is pivotable between a closed position covering the central opening and an open position providing access to the central opening. A safety device is connected to the frame and the cover for locking the cover in the open position. Movement of the cover to the open position automatically moves the safety device to a locked position in which said safety device engages the safety stop portion and prevents movement of the cover to the closed position. When the cover is open, the safety device is manually movable between the locked position and an unlocked position in which the safety device is disengaged from the safety stop and permits movement of the cover to the closed position.

Classes IPC  ?

• E02D 29/14 - Couvercles pour regards ou analoguesChâssis de couvercles

Abrégé

A composite compression molded article is formed from a composition comprising: a) 60 to 97%, preferably 75 to 90%, by weight of rubber particles of a varied size distribution in the range of 5 to 30 mesh, b) 3 to 20%, preferably 5 to 12%, by weight, of a polymerizable material, said polymerizable material being non-reactive with said rubber particles, and polymerizing to form a matrix surrounding said rubber particles, c) 0 to 20%, preferably 5 to 13%, by weight, of reinforcing fibres, said fibres being non-reactive with said polymerizable material, d) 8-20%, preferably about 10%, by weight, of acrylic mixture. The molded composition is formed into a gasket or adjustment unit which absorbs mechanical vibrations transmitted through a surface component thereby protecting an adjacent concrete component against fracture caused by such vibrations; other articles may also be produced including manhole and catch basin adjustment units.

Classes IPC  ?

• C08J 5/04 - Renforcement des composés macromoléculaires avec des matériaux fibreux en vrac ou en nappes
• B32B 5/02 - Produits stratifiés caractérisés par l'hétérogénéité ou la structure physique d'une des couches caractérisés par les caractéristiques de structure d'une couche comprenant des fibres ou des filaments
• C08L 33/12 - Homopolymères ou copolymères du méthacrylate de méthyle
• C08L 75/00 - Compositions contenant des polyurées ou des polyuréthanesCompositions contenant des dérivés de tels polymères
• E02D 29/14 - Couvercles pour regards ou analoguesChâssis de couvercles

Produits et services

(1) Metal construction and utility castings, namely, manholes, manhole covers and frames, catch basin covers, catch basin inlets, elevated and bridge drain inlets, catch basin traps, catch basin hoods, sewer pipe grates and covers, ditch grates, trench frames and grates, catch basin curb inlets, manhole steps, locks for manhole covers, sign bases, tree grates, gate valves, resilient wedge valves, and industrial water valves; modular covers for access to underground sanitary, electrical, water and utility systems. (2) Fire hydrants. (3) Rubber gaskets for sealing against water infiltration, leveling adjacent surfaces and protecting against vibration in catch basins and manholes of sewer systems. (4) Non-metal construction castings for use in road building, underground, and utility construction, namely, manhole frames and covers, storm sewer curb inlets and catch basins, trench gratings, and tree gratings.

Produits et services

(1) Metal construction and utility castings, namely, manholes, manhole covers and frames, catch basin covers, catch basin inlets, elevated and bridge drain inlets, catch basin traps, catch basin hoods, sewer pipe grates and covers, ditch grates, trench frames and grates, catch basin curb inlets, manhole steps, locks for manhole covers, sign bases, tree grates, gate valves, resilient wedge valves, and industrial water valves; modular covers for access to underground sanitary, electrical, water and utility systems. (2) Fire hydrants. (3) Rubber gaskets for sealing against water infiltration, leveling adjacent surfaces and protecting against vibration in catch basins and manholes of sewer systems. (4) Non-metal construction castings for use in road building, underground, and utility construction, namely, manhole frames and covers, storm sewer curb inlets and catch basins, trench gratings, and tree gratings.

Produits et services

(1) Metal construction and utility castings, namely, manholes, manhole covers and frames, catch basin covers, catch basin inlets, elevated and bridge drain inlets, catch basin traps, catch basin hoods, sewer pipe grates and covers, ditch grates, trench frames and grates, catch basin curb inlets, manhole steps, locks for manhole covers, sign bases, tree grates, gate valves, resilient wedge valves, and industrial water valves; modular covers for access to underground sanitary, electrical, water and utility systems. (2) Fire hydrants. (3) Rubber gaskets for sealing against water infiltration, leveling adjacent surfaces and protecting against vibration in catch basins and manholes of sewer systems. (4) Non-metal construction castings for use in road building, underground, and utility construction, namely, manhole frames and covers, storm sewer curb inlets and catch basins, trench gratings, and tree gratings.

Abrégé

A manhole cover assembly includes a frame defining an access opening, first and second mounting posts extending from the frame, and a cover for covering the access opening. The cover includes first and second mounting recesses that pivotally receive the first and second mounting posts respectively, such that said cover is movable between an open position and a closed position by rotating the recesses about the posts. At least one of the recesses includes a locking groove that aligns with the post when the cover is moved to an open position to lock the cover in the open position.

Classes IPC  ?

• B65D 43/24 - Dispositifs pour maintenir en position ouverte
• E02D 29/14 - Couvercles pour regards ou analoguesChâssis de couvercles

Abrégé

The invention relates to methods of using polymers in the waste stream obtained from the production of powder coat. The polymer in the waste stream can be cured with that in another waste stream or with a virgin polymer.

Classes IPC  ?

• C08J 11/00 - Récupération ou traitement des résidus

Abrégé

A manhole system that includes a manhole cover and a frame with at least one locking device for maintaining the manhole cover in place on the frame. The locking device is selectively movable between locked and unlocked positions to selectively engage the cover to hold the cover in place on the frame. The locking device may be rotatable between “locked” and “unlocked” positions about an axis perpendicular to the plane of the cover. The locking device may includes a plurality of cam locks that engage the outer circumferential edge of the cover and are configured to increasingly clamp down the cover against the frame with increasing rotation from “unlocked” position to “locked” position. A plurality of locks can be arranged around frame to engage the cover at different locations.

Classes IPC  ?

• E06B 11/00 - Moyens pour permettre le passage à travers des clôtures, des barrières ou similaires, p. ex. échaliers

Abrégé

A one-piece, unitary manhole cover has dual lifting ports that drain through the outer circumferential edge of the cover. A lifting channel runs from the interior of the upper face out to the outer circumferential edge. A lifting bar spans the lifting channel and defines an ergo lifting port and a pry bar lifting port. Both the ergo lifting port and the pry bar lifting port drain through the outer circumference of the manhole cover.

Classes IPC  ?

• E02D 29/14 - Couvercles pour regards ou analoguesChâssis de couvercles

Abrégé

The invention relates to methods of using polymers in the waste stream obtained from the production of powder coat. The polymer in the waste stream can be cured with that in another waste stream or with a virgin polymer.

Classes IPC  ?

• C09D 5/03 - Peintures pulvérulentes
• C08J 11/04 - Récupération ou traitement des résidus des polymères

Abrégé

A swing-out manhole cover assembly having at least one ramp to facilitate opening and closing the cover. The manhole cover assembly includes a frame, a cover, a swing assembly and at least one ramp. As the cover swings open away from the frame about the swing assembly, the ramp imparts linear translation to the cover separating the cover from the frame slightly. As the cover swings back to close the manhole cover, the ramp reverses the linear translation and the cover returns back to the frame. A spring may be included to bias the cover in the closed position.

Classes IPC  ?

• E02D 29/14 - Couvercles pour regards ou analoguesChâssis de couvercles

Abrégé

A lightweight manhole cover assembly includes a cover and a base, with the cover including an inner surface having a plurality of ribs extending therefrom. The base includes an inner surface having a plurality of receptacles extending therefrom. The receptacles of the base have a layout that corresponds to the ribs of the cover, such that the ribs are adapted to be inserted into the receptacles. Latching and clamping or sealing assemblies are adapted to retain a lightweight manhole cover assembly in a desired position over an opening.

Classes IPC  ?

• E02D 29/14 - Couvercles pour regards ou analoguesChâssis de couvercles

Abrégé

A municipal casting frame with cast nut retainers that allow the frame to be used with or without a bolt-down cover. The frame defines at least one bolt hole to allow free passage of the cover bolts. The undersurface of the frame defines a cast nut retainer adapted to receive a nut. In one embodiment, the nut retainer includes protrusions that permit the nut to be soap-fitted into the nut retainer. In another embodiment, the nut retainer is configured to frictionally receive the nut in a wedging interaction. The present invention also provides a method for manufacturing a frame with integral cast nut retainers. The method includes the steps of providing a core corresponding in shape to the bolt hole and the cast nut retainer, casting a frame in a mold about the core, removing the cast frame from the mold and the core from the cast frame.

Classes IPC  ?

• B22C 7/00 - ModèlesLeur fabrication si elle n'est pas prévue dans d'autres classes

Abrégé

A municipal casting frame is provided with cast nut retainers that allow the frame to be used with or without a bolt-down cover. The frame defines one or more bolt holes of sufficient dimension to allow free passage of the cover bolts. The undersurface of the frame defines a cast nut retainer adapted to securely receive a nut. In one embodiment, the nut retainer includes protrusions that permit the nut to be snap-fitted into the nut retainer. In another embodiment, the nut retainer is configured to frictionally receive the nut in a wedging interaction. The present invention also provides a method for manufacturing a frame with integral cast nut retainers. The method generally includes the steps of (a) providing a core corresponding in shape to the bolt hole and the cast nut retainer, the cast nut retainer being configured to receive and retain a nut, (b) casting a frame in a mold about the core, (c) removing the cast frame from the mold and (d) removing the core from the cast frame. The process may also include the step of inserting a nut into the cast nut retainer in a direction that is in substantial coaxial alignment with the bolt hole.

Classes IPC  ?

• B22C 7/00 - ModèlesLeur fabrication si elle n'est pas prévue dans d'autres classes

Produits et services

(1) Rubber gaskets for sealing against water infiltration, leveling adjacent surfaces and protecting against vibration in catch basins and manholes of sewer systems.