Abstract: A fire stop assembly for bordering a conduit access through a building separation, includes a rigid body portion with an access opening with the access opening being adjustably closed to define a conduit fitting opening within the access opening. The remainder of the access opening is adjustably closed by a fire block arrangement comprising a lining of intumescent material on opposite sides of a conduit fitting opening and a series of non intumescent flame retardant members cooperating with the lining of intumescent material to close the remainder of said access opening. Preferably the non-intumescent flame retardant members are a series of plastic sleeves filled with mineral wool or other suitable insulation material. The sleeves and fill material are removable to adjust the opening size. The sleeves serve to protect the insulation material during the normal life of the fire stop assembly until a fire condition occurs.

Abstract: A pipe sealing gasket is shown which is designed to be received within a groove provided within a belled, socket end of a plastic pipe. The groove in the plastic pipe is preformed during manufacture and the gasket is installed thereafter. The gasket nominal diameter exceeds the internal diameter of the belled pipe end. A special installation tool is used to pull the gasket from an initially deformed, elliptical shape to a normal cylindrical shape. The installation tool uses only one fluid cylinder for power and can be hand installed and operated.

Abstract: A sub sealing projection of an elastic sealing member for a fuel tank is entirely angled, and shaped so as to satisfy 20° ? ?1 (angle defined by its upper surface and a cylindrical sealing portion)? 35°, 50° ? ?2(angle defined by its lower surface and the cylindrical sealing portion)? 70°, 0.4? B (radial distance between a portion having a diameter corresponding to an inner peripheral surface of the cylindrical wall portion and a leading end of the sub sealing projection)/A (maximum projecting distance of the sub sealing projection)? 0.55, and a leading end portion of the sub sealing projection is shaped so as to satisfy a condition, 0.1? R (curvature radius of cross-section thereof)/C(length of a base portion of the sub sealing projection)? 0.2.

Abstract: A sealing device in which a main seal lip used for a shock absorber is formed in a one-stage structure, wherein lattice-shaped projections that include a plurality of projections extending along a sliding direction and a plurality of projections extending along a direction perpendicular to the sliding direction are formed on a sliding surface of the main lip at a position apart a specified distance from a lip edge.

Abstract: A restraining gasket for both sealing and preventing separation of a pipe joint used to join a bell end of a female ductile iron pipe to the male end of a mating ductile iron pipe. The gasket has a body formed from a compressible elastomeric material having a hardened metal ring located therein with gripping teeth. The hardened ring has an opening at one point in its circumference which is filled with rubber. The rubber-filled gap ensures that the gasket body seals first prior to engagement of the gripping teeth as the pipe joint is assembled.

Abstract: A composite sleeve seal for sealing a conduit connection including a body portion having collar sections spaced apart from one another to define gaps therebetween, and being interconnected to one another by link segments spanning the gaps. A seal portion interposes the collar sections in the gaps and surrounds the link segments to positively interlock the seal portion with the body portion to form the composite sleeve seal as one integral component.

Abstract: A pipe gasket includes a toroidal gasket body and projections extending away from a peripheral surface of the gasket body. The gasket body is configured to allow the gasket body to roll along a spigot end of a first pipe as the spigot end is received inside a bell end of a second pipe. The projections each include a first surface and a second surface. The first surface is configured to facilitate rotation of the gasket body in a first rotational direction. The second surface is configured to inhibit rotation of the gasket body in a second, opposite, rotational direction.

Abstract: A seal arrangement comprises an expandable inner tubular and an outer tubular. The inner tubular comprises an axially extending lip seal. Expansion of the inner tubular serves to energise the lip seal, a free end of which will be urged into contact with the outer tubular.

Abstract: A seal of an annular shape comprising a top bead and a side bead that are tilted inwardly at predetermined angles. The top bead and side bead are integrally formed such that a force exerted on the side bead allows the side bead to cooperate with the top bead to properly seal an intake pipe within a cylinder head. This abstract submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the claims.

Abstract: A gasket is provided having a body including at least one service aperture and an integrally formed sealing bead portion. In an embodiment, the sealing bead portion includes a first outwardly extending bead and a first concave channel opposite the first outwardly extending bead. The first concave channel is defined by a second outwardly extending bead and a third outwardly extending bead. In an alternative embodiment, the sealing bead portion includes an annular sealing member molded to the body, and the annular sealing member is opposite an outwardly projecting sealing bead. In a second alternative embodiment, the sealing bead portion includes an internal chamber filled with a pressurized gas. In a third alternative embodiment, the sealing bead portion defines a chamber filled a polymeric material.

Abstract: An adjustable underground utility housing with a lid for access from above ground is disclosed and comprises a housing formed with upstanding wall portions defining a cavity having an upper opening to support a lid and a bottom opening. The housing has utility piping inlet and outlet openings through which the piping enters and exits the housing for servicing a facility. The openings each have flexible closures for preventing dirt from entering the openings into the cavity of the housing. The closures are sufficiently flexible for sliding down over the utility piping yet sufficiently resilient to prevent the dirt from entering the housing cavity. The closures can be formed with overlapping horizontally oriented bristles, with a sheet of rubberized material having a centrally located vertical slit, or with this same sheet of rubberized material with the addition of horizontal slits to form reinforced stiffened fingers.

Abstract: A waterstop ring provides a flexible joint connection between a pipe and a concrete structure. The waterstop ring includes an annular waterstop member projecting from an outer circumference thereof, and a pair of annular shoulder portions respectively disposed on each side of the waterstop member. The waterstop member and each of the shoulder portions each include hollow annular cavities defined therein, such that when the waterstop ring is installed in a connection between a concrete structure and a pipe, and partially embedded within the concrete structure, the annular cavities allow deformation of the waterstop ring and thereby allow tilting movement of the pipe in a direction away from the central axis of the pipe.

Abstract: A gasket for interposition between a first and an opposing second interface surface of a sealing assembly. The gasket includes a retainer and a generally annular seal element received in a groove formed into at least one side of the retainer. Such retainer side further is formed as having one or more channels extending extend radially through the groove and the inner or outer perimeter of the retainer. Each such channel defines a vent for relieving hydrostatic fluid pressure as the gasket is compressed between the interface surfaces.

Abstract: A connector assembly for a plumbing appliance and for sealingly attaching an air admittance valve in a vent pipe. The connector assembly has an elastomeric sealing gasket with an interior threaded bore which is expanded by a rigid bottom portion of an air admittance valve. The bottom portion of the valve body has exterior threads and an expander portion which cooperates with the lower sealing ring of the sealing gasket to compress the elastomeric body of the sealing gasket against the interior of the vent pipe.

Abstract: A seal for a universal joint cross trunnion is accommodated in a bearing bush for a universal joint shaft and has an outer and an inner, ring-shaped, sealing body which are insertable into the bearing bush and operatively connected, and which permit mutual adjustment. The two sealing bodies include meshing sealing elements having a positive-locking design. The inner sealing body includes an enveloping part which overlaps the other sealing body and/or the bearing bush at least partially.

Abstract: A method of, and apparatus for, closing an opening defined at least in part by a wall which at least partially surrounds the opening. The wall has a first thickness. According to one embodiment, a strip of material includes a groove which opens in a first direction and resilient projections which extend in a second, generally opposite direction from the first direction. The method according to this embodiment includes receiving the edge of the surrounding wall in the groove. The projections project at least partway across the opening substantially to obstruct access to it. In another embodiment, a method of closing an opening defined at least in part by a wall of a cover for a valve of a fuel tank includes providing a device having a perimetrally outwardly opening groove. The device further includes resilient projections which extend generally in an opposite direction to the direction in which an adjacent region of the groove opens. The groove receives the edge of the surrounding wall.

Abstract: A plug for sealing holes includes a body and at least three sealing ribs. The body is preferably hollow to save material and molding cycle time. A thickened area is formed at a rear of the body such that a screw driver may be used to insert the plug into a hole. The first sealing rib is formed at substantially a front of the body such that a lead-in area is formed on the body to facilitate easy insertion of the plug into a hole. The distance between each sealing rib is at least twice the greatest thickness of a single sealing rib.

Abstract: A wellhead housing includes a metal seal with a ring portion and a rib portion. The ring portion includes two frustoconical surfaces for mating with tapered surfaces of a wellhead connector and the wellhead housing. Two conical, metal-to-metal seals are created where the ring portions of the seal engage the tapered surfaces of the wellhead connector and housing. These metal-to-metal seals contain internal pressure within the wellhead. Two legs extend outward from the rib portion. An upward-facing foot surface at the end of the top leg engages the wellhead connector, while a downward-facing foot surface at the end of the bottom leg engages the wellhead housing. A metal-to-metal seal created between each foot surface and the corresponding tubular member resists external pressure to prevent water ingress into the joint.

Abstract: An electric submersible pump is provided having a pothead connector for use to connect a downhole cable to an electric motor of the submersible pump. The pothead connector has a housing having an upper and a lower end. The downhole cable has electrical conductors which are separately covered by insulation layers. The downhole cable extends through the upper end and into the housing, and then is electrically connected to the electric motor through the lower end of the housing. Two insulating blocks are provided in the lower end of the housing for separating electrical conductors in alignment for mating with a connector mounted to the electric motor. A conductor pin is secured to the insulating block and to each of the conductors. An elastic sealing ring is disposed within the housing, intermediately between the two insulating blocks. An epoxy layer are disposed within the upper end of the housing.

Abstract: An apparatus for sealing a clearance between a host pipe and a liner pipe. The liner pipe is fed into the host pipe and includes a tubular element forming a leading end of the liner pipe. It also includes a compressible seal which is adapted when compressed longitudinally to expand radially and is mounted on the tubular element when in use. The seal moves freely with the element in the direction of feeding of the liner pipe. But when the liner pipe is retracted counter to the direction of feeding, the seal movement is arrested and the seal compressed longitudinally by the element so that the seal expands radially to engage the internal wall of the host pipe and seal the clearance.

Abstract: A firestop coupling assembly (10 or 210) for allowing the passage of utility members (50 or 52) through a penetration in a partition (54 or 56) while preventing the transmission of fire and smoke through the penetration. The coupling assembly includes an outer sleeve (12 or 212) and an inner conduit (16 or 216). The outer sleeve has a concentric indention (12D or 212D) around its inner surface within which is mounted an intumescent material (20 or 220). In one (1) embodiment, the inner conduit is mounted in the open top end of the outer sleeve so that the second end (16B or 216B) of the inner conduit is adjacent the intumescent material. In another embodiment, the inner conduit is adjustable along the length of the outer sleeve. A plug (22 or 222) can be provided in at least one end of the inner conduit allowing passage of at least one (1) utility member through the assembly.

Abstract: A tube joint is described which facilitates the connection of tubes having different internal diameters or calibers, simply by exchanging a nut member, an insert bush and a collar member for another nut member, another insert bush and another collar member, respectively, having sizes which are suitable for the tube which is to be connected to the tube joint, and in a state in which the joint body is connected to a fluid pressure apparatus.

Abstract: An extruded gasket being formed of a suitable resilient, compressible material through out the body thereof to facilitate controlling critical gap dimensions measured between the components having the gasket arranged in said gap to provide an excellent water-tight seal. The gasket material is of a softer durometer than that of prior art gaskets and includes a relief section providing sufficient mechanical softness to allow the gasket to compress more easily in the region of the relief section.

Abstract: A resilient gasket is disclosed for providing a seal between corrugated pipes having a plurality of concentric ribs on their outer surfaces, such as drain and sewer pipes to be buried in soil. The gasket comprises a base which is received around a first pipe over top of a rib adjacent an end of the first pipe, with an inner surface adapted to mate with a radially outer surface of the rib, and with legs adapted to extend along forward and rearwardly-sloped faces of the rib. The outer surface of the base is provided with sealing elements to engage the inner surface of the bell adjacent the end of a second pipe. The gasket also has a flap extending outwardly and forwardly from the forwardly extending leg. The flap and the forward leg form a V-shaped member. The flap engages the inner surface of the bell when the first pipe is inserted into the second pipe, and the gasket is rotated rearwardly relative to the rib.

Abstract: A rubber plug includes a tubular body having a cross-sectionally corrugated inner surface including a plurality of conically shaped surfaces, and a plurality of lips formed integrally on and projecting radially outwardly from an outer surface of the tubular body in planes perpendicular to a longitudinal axis of the tubular body and including first, second and third lips, the plurality of lips being spaced along the longitudinal axis, wherein a distance between the first lip and the second lip in a direction of the longitudinal axis is different than a distance between the second and third lips in the direction of the longitudinal axis.

Abstract: A watertight grommet for a wire harness including a core made up of a pair of complementary semi cylinders which are placed together to form a complete cylinder surrounding the harness. The harness extends through the bore of the complete cylinder and is tightly retained thereby in a watertight matter. There is an enlarged inner diameter of the bore near the front end, thus forming a gap between the harness and the inner surface of the bore wherein a sealant is introduced. A cylindrical sleeve is drawn over the outside of the core to complete the seal. The latter can have a groove therein for mounting on a separator.

Abstract: A tube joint includes a joint body having a through hole to serve as a fluid passage provided along a direction of an axis, a nut member for connecting a tube to the joint body, and an insert bush inserted and fitted to an opening of the joint body and having an insert section to be inserted into the tube and an expanded section protruding from one end of the tube. The expanded section is formed with first projections which make linear contact with an inner wall surface of the opening and which function as seals.

Abstract: A surface maintenance machine has a body, wheels for supporting the body, a source of cleaning solution on the body and a conduit for applying the cleaning solution to a surface to be cleaned. There are scrub brushes on the body and there is a squeegee carried by the body. A container for used cleaning solution is located on the body and there is a vacuum system, including a vacuum fan, for removing used cleaning solution from adjacent the squeegee and conveying it to the used cleaning solution container. The vacuum system includes a conduit between the used cleaning solution container and the vacuum fan. There is a seal extending about this conduit, with the exterior of the seal being exposed to atmospheric pressure and the interior being exposed to the less than atmospheric pressure of the vacuum system.

Abstract: A sealing ring is disclosed for radially sealing two coaxial surfaces. The sealing ring has an annular convolution with a first radially facing sealing surface and a pair of annular leg portions forming second and third radially facing sealing surfaces. Each of the leg portions are provided with an annular bend to increase the radial resiliency of the seal. In an alternate embodiment, each of the leg portions of the sealing ring has a pair of annular bends. In yet another embodiment, the sealing ring is constructed of a pair of plies or layers.