Covers Patents (Class 137/371)
  • Patent number: 6536471
    Abstract: A novel stream switching system includes a unitary housing having a common stream path for a multitude of fluid streams from, for example, a process pipeline. A set of solenoids or other switches attached to the housing directly controls the flow of each fluid stream. Preferably, the solenoids are default-closed, low dead-volume solenoids that, unlike conventional low dead volume solenoids, are closed if not supplied with electricity. These solenoids are adapted to the wide temperature ranges encountered in the pipeline environment by increasing the voltage applied to the solenoids. The housing also preferably includes a pre-heat region to warm the sample to a desired temperature.
    Type: Grant
    Filed: July 9, 2001
    Date of Patent: March 25, 2003
    Assignee: Daniel Industries, Inc.
    Inventors: Teresa Lechner-Fish, Henry Mancha
  • Patent number: 6536462
    Abstract: A cover is provided for selectively covering and uncovering a fire hydrant or the like so that the hydrant is protected and easily located and maintained. The cover has an upper cover portion formed to enclose the fire hydrant when positioned over the fire hydrant. The upper cover portion has a bottom portion terminating in a bottom perimeter. The cover also a cover securing portion adapted to be removably attachable to the fire hydrant. The cover securing portion has an outer peripheral portion adjacent the bottom of the upper cover portion and plurality of flexible securing tabs. The flexible securing tabs extend inwardly from the outer peripheral portion to a tab securing surface which contacts the fire hydrant when the cover is positioned over the fire hydrant and secures the cover to the fire hydrant.
    Type: Grant
    Filed: June 17, 2002
    Date of Patent: March 25, 2003
    Inventor: David G. Laugen
  • Patent number: 6474358
    Abstract: A fire hydrant safety box provides a user with a product that could be used to surround and protect fire hydrants from physical damage. The fire hydrant safety box includes a tubular member has an upper edge, a lower edge and a peripheral wall that extends between the upper and lower edge. The upper edge defines an upper opening and the lower edge defines a lower opening. The fire hydrant is extended through the lower opening such that the fire hydrant is within the tubular member. The lower edge extends into a ground surface for surrounding the fire hydrant.
    Type: Grant
    Filed: November 9, 2001
    Date of Patent: November 5, 2002
    Inventor: Sigge Malkvist
  • Patent number: 6202675
    Abstract: A sewage lift station comprises a lawn trim ring set having a top cap and a reducer ring. The top cap is removably fastened to the reducer ring, and the reducer ring is fastened to a flange on the tank of the sewage lift station. The top cap has a recess for holding sod so that the sewage lift station only minimally alters the appearance of a homeowner's lawn. In addition to or instead of the lawn trim ring set, the lift station may comprise a gravity flow pump bypass. The gravity flow pump bypass comprises a pipe having an inlet in the tank, the pipe extending outside of the tank for passing sewer water to the outside of the tank.
    Type: Grant
    Filed: April 20, 1999
    Date of Patent: March 20, 2001
    Inventor: Robert A. Forte
  • Patent number: 6036401
    Abstract: A roadway access device such as manhole cover, a storm drain, or a utility valve box which facilitates road paving and grinding operations. The access device includes a riser assembly having an inverted frustoconical top portion that minimizes frictional engagement between the riser and the paved surface and permits repositioning in an elevated plane with no excavation necessary. There is a tapered upper portion that engages with an internally threaded extension nut with tool-engaging receptors and when the nut extension is rotated, the upper conical portion does not rotate, but displaces vertically. There is a riser member that is externally threaded and fixed in position relative to the rest of the assembly around which the extension nut rotates in order to vertically displace the access device. Additionally, there are separate removable lids constructed of high strength material which can be put in place during paving and grinding operations and easily removed when operations are complete.
    Type: Grant
    Filed: April 29, 1998
    Date of Patent: March 14, 2000
    Inventors: John Morina, Chester Ryan
  • Patent number: 6029684
    Abstract: An inspection chamber for use in sanitary sewer systems has an integral back-flow prevention valve. The valve can be installed through an access pipe with the inspection chamber in place underground. The valve does not interfere with the installation or removal of a plug in the inspection chamber during construction and inspection of the sewer system. The inspection chamber comprises a clip oriented to receive a valve member from the direction of an access port. The valve member comprises a pin connected to a flap member by a narrow bridge member. The flap member has a projecting handle member. An installation tool holds the valve member by the handle member and provides a tab which can be hammered downwardly to snap the pin into the clip thereby securing the valve member in the inspection chamber. An inspection chamber according to the invention avoids the necessity of providing a separate buried back-flow prevention valve.
    Type: Grant
    Filed: October 8, 1998
    Date of Patent: February 29, 2000
    Assignee: Le-Ron Plastics Inc.
    Inventor: Leon B. Watts
  • Patent number: 5996612
    Abstract: The present invention is directed to an apparatus for elevating a cover for a meter enclosure that may be buried in the ground. The apparatus includes first and second coaxial, right circular cylinders, the first cylinder including a protruding member extending from its outer surface, with the second cylinder having a diameter greater than or equal to the diameter of the first cylinder and including a pair of spaced apart notches formed in the inner sidewall thereof. The first cylinder may be attached to the meter box, with the protruding member generally securing the apparatus to the enclosure and the enclosure cover may then be attached to the top of the second cylinder.
    Type: Grant
    Filed: February 23, 1998
    Date of Patent: December 7, 1999
    Assignee: Jam Tite Corp.
    Inventor: Johnny W. Crawford
  • Patent number: 5983925
    Abstract: A dirt free valve with a valve (12) of assorted sizes inside of a molded casing (16) with inlet (24) and outlet (26) to accomodate various sized pipe for the flow of different materials, with drainage holes in the bottom (20) and a cover (10) that can be removed by hand.
    Type: Grant
    Filed: June 20, 1997
    Date of Patent: November 16, 1999
    Inventor: Paul D. Miller
  • Patent number: 5983916
    Abstract: A method of upgrading a below grade fill to prevent accidental release harmful materials from contaminating the soil below grade.
    Type: Grant
    Filed: December 30, 1997
    Date of Patent: November 16, 1999
    Assignee: BP Amoco Corporation
    Inventors: Charles M. Daul, Paul A. Sivak, David Lyzinski, Albert J. Kovach
  • Patent number: 5975122
    Abstract: A single-piece flow-control assembly is configured to be disposed within a pit assembly in a manner which allows the flow-control assembly to be easily and quickly removed and replaced. The flow-control assembly includes one or more rigidly connected regulators disposed between two coupling mechanisms and includes a bracket that mounts the flow-control assembly at a fixed location within the pit assembly. The coupling mechanisms provide a sealed engagement between the ends of the flow-control assembly and a fluid inlet pipe and a fluid outlet pipe when the flow-control assembly is properly installed within the pit assembly. A fluid passageway with a 180 degree bend therein may be provided as part of the flow-control assembly so that the coupling mechanisms simultaneously couple to or decouple from the fluid inlet and outlet pipes by movement of the flow-control assembly in one direction.
    Type: Grant
    Filed: November 12, 1997
    Date of Patent: November 2, 1999
    Assignee: Fisher Controls International, Inc.
    Inventors: Larry H. Hazen, Robert L. Claney, Donald K. Day
  • Patent number: 5871030
    Abstract: A curb box locking device has a core unit with a head at its upper end and a foot at its lower end. A sleeve surrounds and is shiftable axially in relation to the core unit. Claw members are carried on the core unit for pivotal movement through side openings in the sleeve. The locking device is externally configured and dimensioned to be lowered into the curb box to a position at which the foot of the core unit is at rest on a valve or the like at the bottom of the curb box. The sleeve is engageable with the claw members during upward displacement of the sleeve relative to the core unit to pivotally urge the claw members radially outwardly into extended positions engaging the interior of the curb box to thereby resist upward removal of the locking device. The locking device is upwardly removable from the curb box by employing a tool specially designed to pull upwardly on the core unit.
    Type: Grant
    Filed: September 4, 1997
    Date of Patent: February 16, 1999
    Assignee: Inner-Tite Corp.
    Inventor: Anthony J. Agbay
  • Patent number: 5826609
    Abstract: An inspection chamber for use in sanitary sewer systems has an integral back-flow prevention valve. The valve can be installed through an access pipe with the inspection chamber in place underground. The valve does not interfere with the installation or removal of a plug in the inspection chamber during construction and inspection of the sewer system. The inspection chamber comprises a clip oriented to receive a valve member from the direction of an access port. The valve member comprises a pin connected to a flap member by a narrow bridge member. The flap member has a projecting handle member. An installation tool holds the valve member by the handle member and provides a tab which can be hammered downwardly to snap the pin into the clip thereby securing the valve member in the inspection chamber. An inspection chamber according to the invention avoids the necessity of providing a separate buried back-flow prevention valve.
    Type: Grant
    Filed: April 11, 1997
    Date of Patent: October 27, 1998
    Assignee: Le-Ron Plastics Inc.
    Inventor: Leon B. Watts
  • Patent number: 5803125
    Abstract: A vertically adjustable valve box for providing access to underground valves includes a first member having a tubular section with a bell and a peripheral flange disposed at a distal end. A second member has a tubular section with a bell and a flange disposed at a distal end. A second peripheral flange is disposed on the exterior surface of the second member approximately six inches below the face of first flange. The tubular section of the second member is telescoped over the tubular section of the first member, wherein the respective bells and flanges are disposed on opposite ends of the assembly and the central longitudinal axis of each is vertical and substantially in alignment. An O-ring gasket is positioned circumferentially around the exterior of the tubular section of the first member and prevents the second member from telescoping downward on first member past a desired insertion position.
    Type: Grant
    Filed: May 15, 1997
    Date of Patent: September 8, 1998
    Assignee: Tyler Pipe Company, a division of Ransom Industries, Inc.
    Inventor: William Charles Bliss
  • Patent number: 5775365
    Abstract: The present invention relates to a basement sewer backflow control valve with adapter. A valve such as a ball valve is positioned a sewer line under the floor of a basement with an adapter extending vertically through the basement floor providing a means for opening and closing the valve as needed to ensure flood waters do not backflow into the basement during flooding. The valve and adapter may also be utilized in combination with an in-line check valve. The adapter provides a flush surface with the basement floor.
    Type: Grant
    Filed: November 26, 1996
    Date of Patent: July 7, 1998
    Assignee: Nibco, Inc.
    Inventors: Stuart E. Hayden, Douglas A. Kieper, George H. Hunt
  • Patent number: 5769565
    Abstract: A protective cover for sewer clean-out lines for protection of the termination end of the sewer clean-out line, but permitting access to the sewer clean-out line, the housing having a cast iron collar with removable cover made into an ABS plastic skirt by force fitting, the plastic skirt having a flared lower end to maintain the position of the housing with the upper surface and cover of the cast iron collar being flush with the level of the ground.
    Type: Grant
    Filed: August 19, 1996
    Date of Patent: June 23, 1998
    Assignee: C.P. Test Services-Valvco, Inc.
    Inventors: Thomas J. Martin, Jr., Glenn Martin
  • Patent number: 5738140
    Abstract: An adjustable-height extension stem and valve box assembly is provided for use with buried valves that is lightweight, readily adjustable to a large range of heights, and is capable of absorbing loads and impacts such that the loads and impacts are substantially not transmitted to the buried valve or surrounding pipeline. The valve box is made up of a valve box base, a valve box lower section, a valve box upper section that telescopes within the lower section, and a valve box top. An upper section of the extension stem extends from the interior of the valve box top through a bottom opening, and an extension stem lower section extends downwardly from the upper section, with the two sections being made from square hollow metal tubing such that the upper section telescopes within the lower section. A grit washer having grooves cut in a bearing surface is attached to the extension stem upper section and supports the upper section in place within the valve box top.
    Type: Grant
    Filed: December 26, 1996
    Date of Patent: April 14, 1998
    Assignee: American Cast Iron Pipe Company
    Inventor: Jerry Thomas Mann
  • Patent number: 5671772
    Abstract: A vertically adjustable valve box for providing access to underground valves includes a first member having a tubular section with a bell and a peripheral flange disposed at a distal end, wherein the central longitudinal axis of the first member is oriented vertically. The invention further includes a second member having a tubular section with a bell and a flange disposed at a distal end. The tubular section of the second member is telescoped over the tubular section of the first member, wherein the respective bells and flanges are disposed on opposite ends of the assembly and the central longitudinal axis of each is vertical and substantially in alignment.An O-ring gasket is positioned circumferentially around the exterior of the tubular section of the first member. The lower end of the tubular section of the second member contacts the O-ring gasket. The O-ring is stretch-fit over the first member and prevents the second member from telescoping downward on first member past a desired insertion position.
    Type: Grant
    Filed: November 12, 1996
    Date of Patent: September 30, 1997
    Assignee: Tyler Pipe Company, a div. of Ransom Industries, Inc.
    Inventor: William Charles Bliss
  • Patent number: 5628152
    Abstract: A manhole cover and frame assembly includes an outer frame having a support surface and a side wall that extends upward from the support surface and has a recessed portion. An inner frame is supportable on the support surface. The inner frame has a protrusion extending from the outer peripheral surface. The inner frame also includes an adjustable joint for adjusting the inner frame in its peripheral dimensions to expand to engage the protrusion with the recessed portion, thereby preventing upward movement of the inner frame, and to contract to remove the protrusion from the recessed portion. The inner frame also includes a cover support surface. A manhole cover is supportable on the cover support surface.
    Type: Grant
    Filed: August 16, 1995
    Date of Patent: May 13, 1997
    Inventor: Harold M. Bowman
  • Patent number: 5577531
    Abstract: The present invention relates to a basement sewer backflow control valve with adapter. A valve such as a ball valve is positioned a sewer line under the floor of a basement with an adapter extending vertically through the basement floor providing a means for opening and closing the valve as needed to ensure flood waters do not backflow into the basement during flooding. The valve and adapter may also be utilized in combination with an in-line check valve. The adapter provides a flush surface with the basement floor.
    Type: Grant
    Filed: December 1, 1995
    Date of Patent: November 26, 1996
    Assignee: Nibco, Inc.
    Inventors: Stuart E. Hayden, Douglas A. Kieper, George H. Hunt
  • Patent number: 5555998
    Abstract: An improved gate valve lid for covering an access tube of a service box assembly leading to a gate valve below street level. The lid has a vertical height which is greater than its diameter so that the lid may not be flipped out of the service box assembly. In one embodiment, the lid includes a two-part assembly having an upper portion which is sized to rest in a tapered upper section of the service box located near street level, and a lower portion which may be displaced laterally with respect to the upper portion to allow the lower portion to be centered within a lower section of the service box, which may be out of alignment with the upper section. In this embodiment, the lower adjustable portion of the gate valve lid is preferably a tubular element slidably located on a cross pin passing through holes located at the upper end of the element across a downwardly opening recess in the upper portion. In one embodiment, the lower portion of the lid is defined by a plurality of downwardly depending fingers.
    Type: Grant
    Filed: February 8, 1994
    Date of Patent: September 17, 1996
    Inventor: Daniel D. Coppola
  • Patent number: 5403116
    Abstract: A booted road plate includes a plate and an anchoring device appended to the underside of the plate. The plate is sized to cover an excavated repair area to allow vehicular and pedestrian traffic to pass over the excavated repair area without harming the vehicle, pedestrian, or repair area. The anchoring device holds the plate in place over the excavated repair area.
    Type: Grant
    Filed: August 12, 1993
    Date of Patent: April 4, 1995
    Assignee: Bastin-Logan Water Services, Inc.
    Inventor: Thomas A. Brewer
  • Patent number: 5394898
    Abstract: A valve box adapter formed of plastics material is provided by molding as a unit an interior member. The valve box cover is elevated by the adapter from the old pavement level to a new pavement level. Plastics are utilized which will not melt at the application temperature of asphalt but will soften somewhat to conform more precisely to the configuration of the adapter cover. A plurality of adapters may be used in multiple applications to enable the continuous use of the original valve box cover as a plurality of asphalt levels are added over a period of time.
    Type: Grant
    Filed: April 13, 1994
    Date of Patent: March 7, 1995
    Inventor: Frank J. Turner
  • Patent number: 5372453
    Abstract: A fuel spill containment system for use with an underground fuel tank has two upstanding fill tubes extending upwardly from the tank through the bottom wall of a spill container. Each tube has an adjustable sealed connection with the container bottom wall to adapt to the container for different fill tube spacings. The spill container is floatably positioned within a protective casing having an overhead cover with an access opening above the fill tubes. A flexible annular sleeve extends from the spill container side wall to the overhead cover to form a flexible liquid-tight closure about the container upper edge. Dislocations of the casing or spill container, caused by earth movements, as from freezing or earthquake, are safely absorbed by the flexible sleeve, thereby preventing earth stresses from breaking connections between the casing and the container.
    Type: Grant
    Filed: February 12, 1993
    Date of Patent: December 13, 1994
    Inventor: Toby Argandona
  • Patent number: 5327925
    Abstract: A kit for forming a valve service box (10). The kit includes a plastic service valve housing (24) and a cover box assembly (22). The cover box assembly includes a plastic cover housing (32). Each of the housings (24 and 32) is provided with a cylindrical smooth wall bore (24.21 or 32.21) which may closely receive one end of a length of polyvinyl chloride pipe (26) of an appropriate uniform diameter. The housings (24 and 32) can be bonded by a conventional solvent welding process to the piece of plastic pipe (26) to form the valve service box, the plastic pipe (26) having been cut in the field to be of a correct length.
    Type: Grant
    Filed: December 14, 1993
    Date of Patent: July 12, 1994
    Inventor: Thomas L. Ortel
  • Patent number: 5234029
    Abstract: The disclosure relates to a safety lockout device for use with a domestic on-off natural gas valve of the type buried underground, sometimes referred to as a curb service valve. In order to prevent the inadvertent and/or unauthorized operation of the valve once it has been closed, a safety lockout device is provided comprising a U shaped bracket that is inserted into the valve box associated with the valve arranged at ground level above the valve. The bracket is of a dimension that prevents it from inadvertently falling through the valve box opening and has tabs that engage the ring of the valve box, which engagement prevents the bracket from moving relative to the valve box. To prevent removal of the bracket from the valve box a bell is arranged over the inserted bracket having a cover that prevents access to the valve by a tool used to operate the valve. The bell is of a dimension that prevents it from inadvertently falling through the valve box opening.
    Type: Grant
    Filed: July 17, 1992
    Date of Patent: August 10, 1993
    Assignee: Cott Manufacturing Company
    Inventors: Jeffrey G. Thomas, Lucas Brito
  • Patent number: 5195590
    Abstract: An environmental monitoring well housing and protection method. A housing is disposed over the end of an environmental monitoring well pipe and set in concrete along with the well pipe itself so that the space between the housing and the well pipe is filled with concrete below the end of the well pipe. Fins extend outwardly from the housing into the concrete to anchor the housing. The housing has an interior ledge for receiving and supporting a cover. A flexible gasket is placed on the ledge, the cover is placed on the flexible gasket, and the two are fastened down by a pair of bolts that screw into threaded bores in the ledge. The bolts have five-sided heads and a special tool is provided for installing and removing them. The cover thickness is substantially the same as the distance from the top of the housing down to the ledge, so that where the top of the housing is mounted flush with the ground the top of the cover is also flush with the ground.
    Type: Grant
    Filed: August 30, 1991
    Date of Patent: March 23, 1993
    Inventor: Donald A. Kenner
  • Patent number: 5195554
    Abstract: Shielded assembly for the delivery of fuel entirely disappearing into the ground and adapted to be used as gasoline pump in civil, in particular military, airports and heliports, bus stations, garages, gas station, said assembly comprising a gasoline pump vertically displaceable between an operative position and a concealed, shielded rest position in which it is entirely received in a casing buried in the ground and closed by a rugged manhole cover which is effraction-free, the vertical movements of the displaceable pump being controlled by a hydraulic cylinder and piston assembly coaxial with the telescopic pipes supplying the gasoline pump with the fuel of the tank.
    Type: Grant
    Filed: January 2, 1992
    Date of Patent: March 23, 1993
    Inventor: Cutore Gaetano
  • Patent number: 5160064
    Abstract: A fuel containment cover assembly comprising a fiberglass skirt with cast iron inserts molded into an integral unit. The inserts are located on the outer perimeter of the skirt and determine the flow of water from the cover to the ground. A pre-molded gasket extends about the interior perimeter of the cover. The gasket seats on the skirt assembly and seals the fuel containment device from the atmosphere. The cover is bolted to the fiberglass skirt and forms a drainage channel between the cover and the skirt.
    Type: Grant
    Filed: May 21, 1991
    Date of Patent: November 3, 1992
    Assignee: ERW, Inc.
    Inventor: Leo J. LeBlanc
  • Patent number: 5117877
    Abstract: An overfill assembly for controlling overfill of liquid to an underground storage tank during a filling operation comprises a dump tank, a fill tube positioned within the dump tank, piping with a valve, a cover base anchor ring, and a cover. The cover base anchor ring and preferably the fill tube within the dump tank are encased with a shrink-fitting covering which extends from the neck and dump tank bottom wall, respectively to ensure liquid tight fits.
    Type: Grant
    Filed: November 21, 1990
    Date of Patent: June 2, 1992
    Inventor: Bruce R. Sharp
  • Patent number: 5058633
    Abstract: An assembly intended for use on underground storage tanks provides ready access to a fill pipe from ground level. At the same time the assembly serves as a spill containment means for accidental spillage and a secondary containment means for the fill pipe. The assembly of the invention comprises a secondary containment chamber having a sidewall with means for attaching to the storage tank. An anchor ring which is attached to an upper open end of the containment chamber acts as a permanent ground base for the assembly. A bridging surface cover within the anchor ring has a removable lid positioned in its interior portion to gain access to the chamber's interior for a filling operation. The assembly also comprises a fill pipe for delivering liquid to the storage tank. The fill pipe is positioned within the secondary containment chamber with a discharging end extending through the chamber's bottom and a receiving end terminating within the chamber but near the bridging surface cover.
    Type: Grant
    Filed: September 5, 1989
    Date of Patent: October 22, 1991
    Inventor: Bruce R. Sharp
  • Patent number: 5010957
    Abstract: An environmental monitoring well housing and protection method. A housing is disposed over the end of an environmental monitoring well pipe and set in concrete along with the well pipe itself so that the space between the housing and the well pipe is filled with concrete below the end of the well pipe. The housing has an interior ledge for receiving and supporting a cover. A flexible gasket is placed on the ledge, the cover is placed on the flexible gasket, and the two are fastened down by a pair of bolts that screw into threaded bores in the ledge. The cover thickness is substantially the same as the distance from the top of the housing down to the ledge, so that where the top of the housing is mounted flush with the ground the top of the cover is also flush with the ground. The cover includes recesses for the heads of each of the bolts, so that the resultant well head is entirely flush with the surface of the ground. The flexible gasket has an adhesive material on its underside for attachment to the ledge.
    Type: Grant
    Filed: August 22, 1989
    Date of Patent: April 30, 1991
    Inventor: Donald A. Kenner
  • Patent number: 4971149
    Abstract: An apparatus for covering the top of a monitoring well with a lockable, weathertight cover which can be easily removed to allow ready access to the monitoring well so that water samples can be taken as desired. The device is positioned over the monitoring well casing in such a manner that when installation is complete, the monitoring well cover is mounted flush and level with the surrounding terrain.
    Type: Grant
    Filed: September 28, 1989
    Date of Patent: November 20, 1990
    Assignee: Charles Wayne Roberts
    Inventor: Daniel R. Roberts
  • Patent number: 4960346
    Abstract: The present invention pertains to a containment unit for use with a fill pipe of an underground storage tank. More specifically, the containment unit is constructed to collect any spilled fule in the filling process of the underground storage tank. The containment unit is provided with a floor having a coupling for connection to the fill pipe of the storage tank. The inner wall of the unit is of the bellows type to permit vertical expansion and retraction as required due to changing temperatures. Additionally, the floor of the containment unit is equipped with a removably inspection plug which permits ready access to the soil to take samples thereof thereby eliminating the need for disassembly of the containment unit to accomplish the testing.
    Type: Grant
    Filed: October 25, 1988
    Date of Patent: October 2, 1990
    Assignee: Pemco, Inc.
    Inventor: Juan H. Tamayo
  • Patent number: 4896705
    Abstract: A containment manhole is formed of an upper rim and a bottom sump portion connected by an expansion joint permitting radial and axial movement of the sump portion relative to the rim. The sump portion has an integrally formed drain for the drainage of spilled product in the manhole directly into the riser. The rim also has an upstanding flange and the lid of the manhole extends over the flange with a wide, downwardly sloped skirt directing water off the lid to the outer perimeter.
    Type: Grant
    Filed: June 30, 1989
    Date of Patent: January 30, 1990
    Assignee: Emco Wheaton, Inc.
    Inventors: Alexander R. Podgers, Eric J. Butterfield
  • Patent number: 4706718
    Abstract: A containment manhole is disclosed which includes a hollow body having a closed bottom and an open top. A concentric opening is provided in the bottom to receive an underground tank fill therethrough and a circular, resilient seal is provided to seal the junction between the tank fill and the manhole bottom. Optionally, a drain valve may be provided in the manhole bottom to lead any spillage directly back to the tank fill. The manhole terminates upwardly in the machined ring and includes a gasketed junction with the ring. The ring includes an upper shoulder upon which the cover peripheral lip can rest and a lower shoulder of size to enable the cover peripheral edges to rest. An O-ring seal is provided intermediate the cover and the top ring to provide a first sealed junction and a circular gasket is affixed on the lower ring edge to provide a second seal when the cover is in position.
    Type: Grant
    Filed: June 17, 1986
    Date of Patent: November 17, 1987
    Assignee: Universal Valve Co., Inc.
    Inventor: Joseph V. Milo
  • Patent number: 4694619
    Abstract: The pit cover assembly for a prefabricated pit for servicing aircraft is provided with an inverted concave cup, or hood, hingedly connected to the underside of the pit cover. The concave cup has a mouth which opens downwardly when the pit cover is closed. The cup is adapted to receive water sensitive articles or equipment. Because the mouth of the cup is directed downwardly, the inverted cup forms an air pocket or bubble chamber which will not fill with water even when the pit is flooded. The water sensitive equipment is thereby maintained in isolation from surrounding water within the air pocket, even during conditions of flooding.
    Type: Grant
    Filed: April 8, 1986
    Date of Patent: September 22, 1987
    Inventor: Kathyleen A. Dabich
  • Patent number: 4691733
    Abstract: A valve cover assembly and support member having opposed slots extending downwardly from the upper end thereof and extending into the lower end of a conventional valve cover to lock the valve against rotation and hold the valve in an upright position.
    Type: Grant
    Filed: July 3, 1986
    Date of Patent: September 8, 1987
    Assignee: Bingham & Taylor
    Inventor: Frank R. Zinn
  • Patent number: 4665941
    Abstract: A surface box for a stop cock (25-29) and water meter (40) has a housing (1) of moulded plastics with ports (10, 11) in the base for the external connection of pipes. Another moulded plastics body (20) is screwed down to the base, inside the housing, and forms part of a passage from port to port. A stop cock (25-29) is carried by this body and can be operated through the top of the housing to close over the mouth of a duct formed within the base from the inlet port. Downstream of the stop cock, a screw cap (39) forming a wall of the passage can be removed and replaced by a water meter (40) which co-operates with the body in such a way that water has to flow through it. Further downstream, a non-return valve (37) or a further stop cock is carried by the body. There are no pipe connections made inside the housing, and the stop cock(s) and screw elements are operable within narrow confines, allowing a very compact box.
    Type: Grant
    Filed: March 26, 1982
    Date of Patent: May 19, 1987
    Inventor: David R. Hudson
  • Patent number: 4621939
    Abstract: The drainage channel comprises a channel body (1), cast frame (2) and cast grid (3). The support surface of the side walls (11) of the channel body (1) are of stepped construction, with a raised external supporting rib (13). The frame (2) is rectangular, with a lowered support rail (28) as support for the side ribs (30) of the grid (3). On the outside the frame (2) has detachably fastened brake lugs (23), which in the installed state prevent displacement of the frame (2). Locking bar holders (44) of roughly H-shaped cross-section are disposed in the side walls (11) some distance below the support surface. These locking bar holders form a closure between the interior of the channel body and the exterior. On the inside a side wall (79) forms an obtuse angle with the wall (75), so that the locking bar (45) can easily be turned into the inner recess (78).
    Type: Grant
    Filed: November 21, 1983
    Date of Patent: November 11, 1986
    Assignee: Polydrain, Inc.
    Inventors: Roland Thomann, Heinz Witschi, Heinz-Dieter Brink, Markus Amann
  • Patent number: 4593714
    Abstract: A manhole assembly is attached on a fill pipe for an underground storage tank for gasoline, diesel fuel or other types of toxic chemicals. The manhole assembly comprises a bucket-like body attached on an upper end of the fill pipe and a removable cover mounted on an upper end of the body to selectively expose the fill pipe. At least one annular dam is formed on an upper surface of the body and is adapted to nest within an annular groove formed on an underside of the cover. The dam functions as a barrier to prevent the ingress of water into the body during rainstorms and the like. A combined sealing and cushioning assembly attaches a bottom wall of the body to the fill pipe and a drain connection is provided for selectively communicating an internal chamber of the body with the fill pipe.
    Type: Grant
    Filed: June 19, 1984
    Date of Patent: June 10, 1986
    Inventor: Michael J. Madden
  • Patent number: 4572236
    Abstract: A cradle device of integral construction provides stable support for an underground curb cock positioned at the bottom of a vertical curb box conduit. The device embraces the curb cock, thereby preventing its movement and maintaining its valve stem in an upright position so that it can be engaged by a long stemmed key. The device also provides secure footing for the curb box conduit.
    Type: Grant
    Filed: May 6, 1985
    Date of Patent: February 25, 1986
    Inventor: Richard Baker
  • Patent number: 4556080
    Abstract: The casing of the invention comprises a fixed part 1 fixedly mounted to the post 10 below the zone to be protected, this fixed part comprising, on one side of post 10, a support structure 14; a mobile part 15 for covering, in the closed position, the upper part of the post; a mechanical connection mounted between the support structure 14 and the mobile part 15; and an assistance device 22 adapted to exert a force tending to drive the mobile part during its upward movement.
    Type: Grant
    Filed: June 29, 1984
    Date of Patent: December 3, 1985
    Assignee: Societe Anonyme dite: Societe Metallurgique Haut-Marnaise
    Inventor: Michel M. R. Picaud
  • Patent number: 4548230
    Abstract: A surface box for covering over and guarding the operating rod of a gate or other valve in underground piping has a tube-like supporting frame and a rod guard sleeve mounted therein so that it may be moved upwards and downwards in translation for adjustment, for which purpose it is supported by a thrust screw on the supporting frame. To keep the sleeve from being tilted sideways and the operating rod of the valve damaged, the rod guard sleeve is keyed in the supporting frame and is guided by at least one guide ridge in the frame.
    Type: Grant
    Filed: February 1, 1984
    Date of Patent: October 22, 1985
    Inventor: Josef Feit
  • Patent number: 4491147
    Abstract: A fillbox system to prevent water from entering the below ground level inlet of an input stand pipe for an underground fuel storage tank. The system includes a fillbox about the inlet stand pipe which extends upwardly therein and a fillbox cover having a downwardly extending skirt which extends almost to the bottom of the fillbox. The skirt, generally has the same outer shape as the inner sides of the fillbox but a slightly smaller dimension than that of the fillbox adjacent the cover. The skirt has a small inward draft angle as it extends downwardly about the stand pipe so that when placed on the fillbox, the cover is guided by the skirt into a proper seating relationship. At the same time, the skirt and cover trap enough air therewithin so that the level of water seeping in the fillbox can never exceed a volume that would produce a water height above the inlet with the cover removed to leak into the underground storage tank when the inlet is opened.
    Type: Grant
    Filed: September 1, 1982
    Date of Patent: January 1, 1985
    Inventor: Toby Argandona
  • Patent number: 4461597
    Abstract: 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 lock lift lever extending through a slot in the side of the cover and which, when moved downwards, causes the lock member portion of the lock lift lever to tighten against the valve box and which when raised, rotates a lift member portion against the seat of the valve box thereby jacking the cover upwards so that it can be easily removed.
    Type: Grant
    Filed: April 27, 1983
    Date of Patent: July 24, 1984
    Inventor: Gerard F. Laurin
  • Patent number: 4350177
    Abstract: A support for a utility box such as a valve box or the like which includes an annular member having a central opening with an upstanding flange on the upper surface of the annular member adjacent the central opening. The annular member is buried in the ground in underlying supporting engagement with a box so as to prevent sinking of the box into the ground under heavy traffic load, said box provides access to the buried utility the upper end of the box opening into the street.
    Type: Grant
    Filed: May 12, 1980
    Date of Patent: September 21, 1982
    Inventors: John C. Firchau, Morris L. Donaldson
  • Patent number: 4325405
    Abstract: Valve box assembly having a valve box, having a riser threadingly mounted in the valve box for fine height adjustment, and having a cover for the riser.
    Type: Grant
    Filed: January 24, 1980
    Date of Patent: April 20, 1982
    Inventor: C. Louis Christo
  • Patent number: 4257446
    Abstract: Method and apparatus for providing interruptible fluid flow to consumers is disclosed wherein a consumer distribution system for a fluid, such as natural gas, includes somewhat flexible plastic pipe with that pipe passing through buried access receptacles, such as curb boxes, at strategic locations for easy access to a short section of the supply line at each receptacle location. Each receptacle is adapted to receive a removable shut-off tool having a generally C-shaped frame with a slidable intermediate member for spanning the buried resilient service line within the access enclosure and having a threaded coupling arrangement for collapsing the service line between one end of the C-shaped member and the intermediate slidable member to squeeze the line sufficiently to interrupt fluid flow therethrough.
    Type: Grant
    Filed: May 29, 1979
    Date of Patent: March 24, 1981
    Inventor: Charles W. Ray
  • Patent number: 4163503
    Abstract: A rectangular shape lid for closing a rectangular shaped top opening of a water meter housing. The lid is formed of plastic material and has a seating surface on its lower side for engaging the upper edge of the housing for support purposes. This feature allows the lid to fit housings having different size openings. Lower supporting ridges are formed on the lower side of the lid in such a manner that they allow the lid to fit housings having different radius of curvature at the corners. Hooks are provided on opposite ends of the lid for securing the lid to the housing.Also provided is a housing formed of plastic material. The housing has an upper edge formed by inner and outer ridges which define the top opening. The inner and outer ridges are joined together at a position below the upper edge and extend away from each other in an upward direction. Connecting ribs extend between the inner and outer ridges to form a strong upper edge for supporting a lid.
    Type: Grant
    Filed: September 20, 1978
    Date of Patent: August 7, 1979
    Assignee: D/FW Plastics, Inc.
    Inventor: Robert M. McKinnon
  • Patent number: 4080984
    Abstract: A sealed sump and sump pump cover that is especially adapted to cover a sump hole that is fitted with a sump cover, thereby providing both an attractive as well as a functional service.
    Type: Grant
    Filed: July 19, 1976
    Date of Patent: March 28, 1978
    Inventor: Robert Klein