Quotables
"To place a man in a multi-stage rocket and project him into the controlling gravitational field of the moon where the passengers can make scientific observations, perhaps land alive, and then return to earth--all that constitutes a wild dream worthy of Jules Verne. I am bold enough to say that such a man-made voyage will never occur regardless of all future advances."
Lee deForest, American radio pioneer ; 1957
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| Number | Title | Issue Date |
| 4666333 | Manhole casting positioning apparatus The present invention provides a casting positioning apparatus, which is used to position a casting in relation to an upper end of manhole. The apparatus includes a sleeve unit which has open upper and lower ends, and which is moveable in lateral dimensio... | 05/19/1987 |
| 4662777 | Composite article A composite cover 10 for a manhole or other opening comprises an upper 12 and lower 14 skin of glass reinforced plastics material. The upper and lower skins are bonded to one another about the edges 18 and spaced apart from one another therebetween to def... | 05/05/1987 |
| 4655913 | Adjustable drain cover A drain cover having separable mounting means which is adjustable for operational installation in drain pipes of varying standard sizes. The mounting means comprise resilient fingers having short feet which are releasably engageable in radially spaced sti... | 04/07/1987 |
| 4650365 | Watertight manhole insert A watertight manhole insert is provided for preventing rainwater from entering a sanitary sewer system through manhole covers. The insert includes a shallow, dish-shaped body and a mounting flange designed to rest upon the supporting flange of a manhole f... | 03/17/1987 |
| 4649674 | Drain hole seal with bottom bleeder A device for a drain, such as a manhole 10 for access to a sewer, is protected by a seal structure 34 having a bottom bleeding feature such as a bottom thru-bore 42. The seal structure 34 may have a flange 38 for sealingly engaging between a cover 22 and ... | 03/17/1987 |
| 4648740 | Manhole lid seal An improved manhole seal for sealing a manhole lid to the frame. The frame has an upwardly facing ledge and an annular surface bordering the outer extremity of the ledge. The lid encloses the manhole and has a lower surface seated directly on the ledge an... | 03/10/1987 |
| 4637752 | Access covers for manholes A manhole access cover comprises a removable cover member which fits within an outer frame, the cover member comprising an inner frame with an appropriate filling (44). Each of the inner and outer frames are fabricated from a plurality of lengths of angle... | 01/20/1987 |
| 4621941 | Manhole riser having integral flexible waterlock for manhole covers and having a water tight seal for sealed manhole covers A hollow, flexible, bendable, cylindrical-shaped, hat-like sleeve is water-tightly joined with the upper end of the riser section of a manhole structure. The free end of the sleeve is trimmed so that its upper edge fits beneath the shoulder of the frame s... | 11/11/1986 |
| 4608787 | Manhole seal construction A manhole seal construction adapted to engage the outer surface of the manhole frame and the chimney to seal the corbel joint from the outside and prevent leakage of water and entry of foreign material into the joint and manhole. A resilient ring having a... | 09/02/1986 |
| 4597692 | Rehabilitated manhole cover A rehabilitated manhole cover and method of producing the same. To rehabilitate the manhole cover for a sanitary sewer system, a removable plug is inserted in one of the vent holes in the cover, while a permanent seal is applied to the remaining vent hole... | 07/01/1986 |
| 4592674 | Concrete manhole A manhole barrel is cast with an annular gasket in place in the barrel form. The form has a frusto-conical pallet section grooved for receiving the gasket. Anchors protruding from the gasket become embedded in concrete when the latter is introduced into t... | 06/03/1986 |
| 4591290 | Combination adjustable valve box adapter and replacement for broken valve boxes A valve box adapter comprising an adapter frame for insertion into a valve box which adapter frame includes an elongated narrow tapered skirt contiguous with a horizontally extending portion at its top adapted in one embodiment for the exterior bottom of ... | 05/27/1986 |
| 4582449 | Manhole sealing device A manhole sealing device and method for sealing a frame-chimney joint between a manhole chimney and a manhole cover frame. The device comprises an annular ring defining a narrow annular space adjacent the frame and the chimney and across the frame-chimney... | 04/15/1986 |
| 4567697 | Utility vault cover seal In a rectangular utility vault cover a continuous flange on the underside of the cover presses against a sealing material contained in a channel mounted on the vault casing to form a non load bearing seal on the vault cavity. A raised ramp or cam located ... | 02/04/1986 |
| 4557625 | Internal sealing assembly The sealing assembly includes a relatively soft rubber, tubular sleeve having an axial length sufficient to span the joint between hollow members, such as the corbel joint between a manhole frame and a manhole casing, and a sealing portion in each of the ... | 12/10/1985 |
| 4549833 | Frame members for supporting covers or gratings In order to ensure that a manhole/inspection cover or grating is firmly seated in a road or other surface within which it is installed and is substantially non-rocking, it is supported on opposite sides by two frame members each of which comprises two sea... | 10/29/1985 |
| 4540310 | Manhole riser and cooperating sleeve to provide a waterlock for manhole structures A hollow cylindrical-shaped, hat-like sleeve is water-tightly joined with the upper end of the riser section of a manhole structure. The free end of the sleeve is trimmed so that its upper edge fits beneath the shoulder of the frame supporting the manhole... | 09/10/1985 |
| 4534132 | Spring assisted doors for sidewalk, pit and floor openings A rectangular frame set into the concrete surround at the head of a shaft supports one or more slab doors that are hinged to the frame. Adjacent each hinge line brackets fixed to the frame support a fixed spindle upon which a helical spring is secured. Th... | 08/13/1985 |
| 4523407 | Hatch cover The hatch cover is secured and locked in place by a spider which is rotatable into locking position against the underside of a deck ring which receives the cover plate. The spider is clamped by a center bolt passing through the cover and the spider. Means... | 06/18/1985 |
| 4514931 | Securing device for manhole cover The specification describes a pressure release device for use with a manhole cover for releasing excess fluid pressure within a manhole or the like, the device comprising a tubular member having a tubular wall, a fluid inlet at one end thereof, a fluid ou... | 05/07/1985 |
| 4512492 | Manhole closure with a single liquid impervious, two-way gas pressure relief valve A liquid impervious closure for a sewer system manhole opening having a single bi-directional pneumatic breather valve that allows for pneumatic pressure equalization on either side of said closure. The closure is comprised of a pan-shaped barrier and the... | 04/23/1985 |
| 4508470 | Manhole/access cover and frame assemblies A frame, for a manhole/access cover and frame assembly, has outer peripheral portions which are generally of inverted U-shape in cross-section, and the outer surfaces of the peripheral portions, forming the outer limb of the inverted U, are formed with a ... | 04/02/1985 |
| 4508469 | Manhole with articulated cover members A manhole structure comprising a circular frame formed with a pair of diametrically opposite inwardly and upwardly open recesses traversed by respective pivot pins and a further pair of diametrically opposite brackets having inwardly and upwardly open rec... | 04/02/1985 |
| 4499695 | Manhole A manhole cover plug (1A) contains three helical ribs (5A) whose profile, in transverse cross-section, has two lateral quarter-circular parts (11A, 12A). These lateral parts cooperate with helical grooves of the frame with a quarter-circular profile of a ... | 02/19/1985 |
| 4498804 | Manhole/access cover and frame assemblies In a manhole/access cover and frame assembly the cover is supported on the frame by pairs of downwardly facing, oppositely inclined support surfaces on the cover which are engageable respectively with corresponding upwardly facing, oppositely inclined sup... | 02/12/1985 |
| 4486122 | Method and device for reducing the risk of freezing of surface-water pipe-line systems A method for reducing the risk of freezing of surface-water pipe-line systems of the kind comprising a plurality of drains and other inlets, such as rain-water drains, manholes and inlets from terrace and roof guttering, etc. Means are provided which prev... | 12/04/1984 |
| 4483110 | Methods of installing frames for access pits and manholes In order to span an access pit or manhole having a clear opening of relatively large area, one or more I-section steel beams are laid across the opening so as to divide the area to be covered into a number of smaller areas. One or more frame members, each... | 11/20/1984 |
| 4475845 | External manhole chimney seal A cylindrical elastomeric seal is disclosed for externally sealing a manhole assembly against surface water infiltration between the manhole casting and the supporting structure and through the supporting structure. The seal has a first sealing section ad... | 10/09/1984 |
| 4475844 | Method and apparatus for restricting local variations in ground level in the vicinity of surface water drains and manholes A tubular drain vertically positioned within the ground beneath the ground level in the vicinity of surface water and having a tubular drain cover-support member anchored in the surface ground layer with a tubular part of the drain cover-support means ext... | 10/09/1984 |
| 4472911 | Construction for access to a buried pipeline A pipeline 1 crosses a manhole 2 with a degree of clearance and is provided, inside the manhole, with a vertical pipe 19 capped with a removable sealing cover 22. The movement of the pipeline in relation to its surroundings is thus enabled without it bein... | 09/25/1984 |
| 4469467 | Manhole chimney seal An internal seal is disclosed between a manhole casting and mating manhole components such as concrete adjusting rings, the concrete manhole cone, or masonry structure of a similar configuration, to prevent water infiltration at this interface. The seal i... | 09/04/1984 |
| 4466219 | Adjustable manhole cover Manhole cover support rings and clips are used to increase the height of an existing manhole cover support frame for raising the height of a manhole cover positioned thereon so as to match or be level with a resurfaced roadway. The support rings are split... | 08/21/1984 |
| 4461597 | Valve box cover A cover capable of being both locked in position within a valve box or manhole cover and lifted upwards to assist in its removal, having a rotating bolt therein which maneuvers a lever base upwards or downwards which lever base causes the rotation of a lo... | 07/24/1984 |
| 4456397 | Road inspection manhole The manhole has a frame 1 with a flange 4 to be embedded in the road and a movable cover 2 to fit in the cylindrical wall 3 of the frame. On its inside the wall 3 has three support surfaces 9 each downwardly sloping at an angle to the horizontal i... | 06/26/1984 |
| 4449715 | External manhole seal An external manhole sealing assembly comprising a flexible sleeve spanning the joint between a manhole frame and a manhole casing, a frame adapter for forming a sealing surface for said sleeve, the sleeve being secured to the sealing surface on the adapte... | 05/22/1984 |
| 4368893 | Manhole infiltration disk and seal assembly A manhole infiltration disk and seal assembly including a circular plate having flanges on the inner and outer peripheral edges and a strip of compressible seal material on the top and bottom surface, the disk being adapted to be placed between the top of... | 01/18/1983 |
| 4368600 | Removable guttering assembly for man-holes or the like A removable guttering assembly is disclosed for use in man-holes or air shafts to improve working conditions and to reduce the risk of water damage to equipment located in these holes or shafts. The guttering assembly consists of hooks or rails mounted ar... | 01/18/1983 |
| 4364689 | Manhole cover assembly 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... | 12/21/1982 |
| 4355197 | Service line terminal box system, especially for ships moored to quays A system for primarily supplying fishing boats lying berthed in harbor with electrical power, comprises a plurality of terminal boxes (1) which are countersunk along the edge of the quay and each contains electric power socket outlets (2), a drain hole (1... | 10/19/1982 |
| 4305679 | Manhole sealing device Manhole sealing device to prevent water from entering a manhole through the corbel joint between the manhole casing and cover frame. The device comprises a flexible tube like membrane spanning the corbel joint of the manhole and provided with first sealin... | 12/15/1981 |
