Abstract: A drainage device for drainage of moisture which collects between a waterproof isolating layer applied to the top surface and a concrete slab itself and/or moisture which passes through a surface layer deposited on top of the isolating layer. The drainage device has a drainpipe extending through the concrete slab and having at its upper end a shallow funnel provided on its upper surface with radially extending grooves and being flush with the top surface of the concrete slab. The funnel is fitted on its underside with a centering cuff concentrically surrounding the funnel tube spatially separating the funnel tube from the drainpipe, the diameter of the funnel tube being at least about 20% smaller than the inner diameter of the drainpipe. The upper end of the funnel opening is covered with a mushroom shaped insert resting on the top of the isolating layer and having radially extending grooves on its underside.
Abstract: Large area concrete structures, such as roadways, parking lots and playing field bases are monolithically cast with integral drainage elements using an especially formulated water-permeable concrete material having strength and durability to conventional concrete. Such structure provide minimal interference with natural water flow patterns, optimal use of available land, and minimal harm to adjacent vegetation.
Abstract: A containment and storage system for liquids, such as petroleum based liquids, for use for instance in a railroad track environment, comprising a walled containment reservoir formed in the ground and opening upwardly, with the containment reservoir including a flexible impervious liner to prevent escape of liquid through the liner from the containment space, and a receiving or storage reservoir disposed in spaced relation to the containment reservoir and means coacting between the reservoirs for transferring liquid caught in the containment reservoir, to the storage reservoir. In one embodiment, a mechanical pump is utilized for transferring to the storage reservoir liquid caught in the containment reservoir. In another embodiment, gravity flow is utilized for transferring such liquid. An improved arrangement is disclosed for handling liquid caught in the containment reservoir, and preventing leakage from the reservoir, at the exit point from the containment reservoir.
Abstract: A manhole cover assembly comprises a seating ring which can be inset in a street or roadway surface and which is formed with a pair of lateral compartments in which respective latches of the plug-like cover can be received. According to the invention, the cover has a pair of opposing radial projections adapted to be received under respective projections of the ring upon rotation of the cover relative to the ring in bayonet action. Each of the latches is in the form of a pawl pivotal about a respective pin on the radial projection and adapted to swing so that a surface of the pawl substantially completely closes the compartment, flush with the upper surface of the ring and an end wall of the pawl abuts or is juxtaposed with the wall of the compartment to prevent rotation of the cover. The pawl can have flanges which, when the pawls are swung upwardly, form handles enabling the cover to be lifted from the ring.
Abstract: A molded structural plastic grate is received within a recess defined by a rim at the top of a structural plastic catch basin which also serves as a girth beam for strengthening the top of the basin. Bottom portions of the basin are rounded to provide a dome section for strengthening the bottom of the basin. The four corners of the basin reinforce it against buckling under weight placed on top of it. Each side wall of the basin is formed to include a breakout section adapted to be easily removed to provide a drain pipe receiving opening. The portion of the side wall surrounding the opening is adapted to be received within a groove portion of a section of corrugated plastic pipe.
Abstract: The present invention relates to a new and improved catch basin including a frame means mounted around an opening in drainage and/or sewer pipes, a riser means having an opening at each end thereof mounted with said frame, and a grid support means and grid means mounted therewith, said grid support means and grid means being positioned on the interior of said riser means and between each of said openings in said riser means for preventing undesirable, unwanted, oversized objects from entering into the drainage and/or sewer pipes.
Abstract: A grating to cover a drain for a paved surface such as a road comprises a set of parallel bars interconnected by spacers. In the central part of the grating, adjacent pairs of bars each have only one spacer therebetween, the spacers being positioned alternately at opposite ends of the bars. This allows the grating to be compressed during insertion into a support frame so that, when the force causing such a compression is removed after insertion, lugs on the grating move into locking engagement with the frame.
Abstract: Manhole closure assembly for preventing storm water from entering into manhole opening comprises cover section including downwardly depressed central portion. Circular mounting flange extends outwardly from depressed central portion and flange is adapted to rest upon inwardly directed manhole cover supporting flange of annular manhole frame. Downwardly depressed portion of cover section is depressed amount that exceeds path of spin of manhole cover resting upon supporting flange of annular manhole frame. First valve member is secured to cover section to relieve pressure inside manhole when pressure therein exceeds predetermined amount.
November 11, 1976
Date of Patent:
January 10, 1978
Samuel A. Campagna, Jr., Benjamin J. Campagna
Abstract: A catch basin cover and lid takes the form of a reinforced concrete slab-like body of a desirable shape and provided with a central opening and a lid and replaces the cast iron catch basin covers heretofore generally employed. The reinforcing members are shaped to support the peripheral edges of the concrete slab and are positioned transversely therein so as to engage and support a reinforcing ring defining the access opening in the cover, the reinforced concrete catch basin cover and lid are uniformally sized by formation of the same in an appropriately shaped outline mold uniformly spaced with respect to the reinforcing members of the catch basin cover.
Abstract: A protective cover for sewer grates comprising a pair of spaced apart longitudinally extending bars having a plurality of transversely extending bars adjustably secured thereto and extending therebetween. The longitudinally extending bars are at least partially received in openings formed in the sewer grate and have their upper opposite ends inclined inwardly and downwardly to prevent snow removal equipment from catching thereon. The transversely extending bars preferably have a convex upper surface and are selectively adjustably slidably received by the longitudinally extending bars so that the cover can be used on sewer grates having various dimensions. Fastening hook members hook the longitudinal extending bars and fastening brace members which engage the sewer grate bars to maintain the protective cover in position. Nuts are threadably mounted on the lower ends of the fastening hooks.
Abstract: A rectangular grating panel to be supported in a stationary frame surrounding an opening of a storm drain inlet or the like, the grating panel having an outwardly projecting anchor leg at one side to project beneath one of the frame members of the stationary frame and having a pair of adjustable locking devices projecting from the opposite side of the grating panel to bear against an interlock beneath a confronting frame member of the stationary frame. The locking devices each include a threaded stud adjustable by threaded nuts for axial movement relative to the grating panel and a truncated angle member head on each stud providing a face to bear against the confronting frame member and a short flange to project therebeneath.
January 27, 1975
Date of Patent:
March 23, 1976
Maryland Grading and Fabricating Company, Inc.