Abstract: A pipe gripping element has a T-shaped body including an elongated cross member and a base member extending from the cross member. The cross member includes an upper portion and an opposite lower arcuate portion, and the base member includes an upper portion that is slanted relative to the cross member upper portion to define a fulcrum. An elongated, arcuate tooth extends outwardly from the arcuate portion. A pipe joint restraint includes an annular retainer gland, a plurality of pockets circumferentially spaced around the gland, and a plurality of the pipe gripping elements operably associated therewith for gripping and restraining a pipe.

Abstract: A coupling device may increase the integrity of a pipe joint. The coupling device may include a first pipe encircling device and a second pipe encircling device connected across the pipe joint by a spanning element. The pipe encircling device may be made up of at least two approximately c-shaped segments. The multi-part nature of the pipe encircling devices may facilitate installation of the coupling device at an excavation site.

Abstract: An axi-symmetric adapter is provided for attaching to a pre-filter bag as a pre-filter assembly for use with chemical, biological, and radiological filtration systems. The bag has an annular retention ring, with the assembly being insertable into a cavity of an M98 Filter Bank or other Navy-designated Collective Protection System filter housing. The adapter includes tang, groove, flange mezzanine rings. The tang ring has an exterior bevel edge and terminates a reverse side of the adapter. The groove ring possesses inner and outer cylindrical walls that define a circular channel and terminate an obverse side of adapter. The flange ring extends radially inward from the inner cylindrical wall for engaging the retention ring. The mezzanine ring connects the flange and groove rings together.

Abstract: A coupling for a ventilation duct assembly for use with interconnecting ventilation duct elements and method of assembly is disclosed comprising a first and a second ventilation duct element formed from a flexible panel shaped and foldable into a ductwork element with a male end smaller in diameter than a female end and with an abutment for restricting movement of the female end over the male end of an adjacent ductwork element. A C-shaped collet is also provided and shaped to fit over the interconnecting male and female ends of the formed ductwork elements for interconnection of adjacent shaped ductwork elements, and sized to extend between adjacent slideable locking elements from corresponding adjacent shaped ductwork elements.

Abstract: A pipe coupler for coupling pipe of dissimilar composition having a substantially cylindrical housing with a stub end and a bell end, the housing having a primarily plastic composition with an embedded anchor ring at the bell end wherein the anchor ring includes a plurality of threaded radial holes and a set of gripping bolts with ends that physically engage an outer surface of a pipe inserted into the bell end of the housing and a plurality of threaded axial holes off-set from the radial holes with a compressor ring, sized to slip over the end of a pipe inserted into the bell end of the housing, the compressor ring compressing a seal when a series of axial bolts engaging the anchor ring are tightened.

Abstract: A joint restraint includes a split ring terminating in radially outwardly extending flanges. A shell includes a cylindrical sleeve, an annular flange at one end and arms projecting generally tangentially for securement behind lugs on a standard bell end of a fitting. With the split ring disposed within the shell and flanges projecting through a radial opening through the shell, a pipe end may be inserted through the joint restraint into the bell. By compressing the split ring about the pipe end by drawing the flanges toward one another and bolting them in place, relative axial movement of the pipe end and fitting is precluded by engagement of the shell flange and split ring.

Abstract: A connection system for sealingly interconnecting components of a high pressure fluid flow system, for example, an automobile engine air intake. The system can include a conduit defining a groove that is locked in a corresponding groove defined by a component, for example, an engine intake. An interlock ring is placed in the conduit groove. A clamp is placed over the interlock ring, however, the clamp and ring can be an integral component. When tightened, the clamp forces the ring into the conduit groove, which presses the conduit into sealing and/or locking engagement with the component groove.

Abstract: A a quick acting closure has two flanges. One of the two flanges has a groove for a flexible seal and the other has spaced cogs. The goal is to provide a quick acting closure in such a form that it can be used for the connection/closure of boiler or pipeline elements which can either have a round or a non-round cross section. In accordance with the invention, the two flanges are therefore connected to each other by individual clamps which are arranged at the circumference of the flanges and the number of which is equal to the number and the spacing of the cogs in the flange whereby the clamps are connected to each other two sheet rings, i.e. one lower and one upper sheet ring.

Abstract: In the case of the pipe connection of two overlapping pipes a flexible ring is arranged between the interior pipe and the exterior pipe and, before the bracing, is axially displaceable on the interior pipe. The flexible ring and the exterior pipe have a spherical interacting outer and inner contour which ensures the angular mobility. The fixing of the pipe connection after the adjustment takes place by two tensioning bows which are fixedly mounted on the exterior pipe. This permits a particularly easy handling during the adjustment and the fixing of the pipe connection.

Abstract: A separation preventive pipe joint comprises a socket and a spigot inserted into the socket with an annular packing interposed therebetween. An annular gland connected to the socket has an axial packing presser projection and is internally provided wtih an annular receptacle groove. Arcuate engaging segments are incliningly disposed in a circular arrangement within the receptacle groove and retained there by elastic distancing members. The engaging segments are radially inwardly pressed by pressing bolts to engage in the spigot outer periphery. Each engaging the segment elastically deforms in a manner of a Belleville spring in response toseparating movement of the spigot to assume a posture generally perpendicular to the spigot outer periphery so that the engaging element engages in the spigot outer periphery more firmly.

Abstract: A thrust rod anchor for utilization in conjunction with a tied form of pipe joint restrainer system. The anchor utilizes two arcuate band segments the ends of which are welded to elongate junction devices such as blocks. These junctions are bolted together in the course of assembling the anchor over the outside surface of a pipe. The assemblage of junctions and arcuate band segments support thrust rod connectors having apertures formed in thrust plates thereof advantageously spaced outwardly from the band segments. Spaced away from the thrust plates of each connector are pairs of set screws. A buttress arrangement is utilized to support the thrust plates of the tie rod connectors. The anchor assemblies have been shown to provide enhanced anchoring resistance to thrust forces and to be more facilly mounted upon a pipe surface.

Abstract: A thrust rod anchor for utilization in conjunction with a tied form of pipe joint restrainer system. The anchor utilizes spacers which are supported by flanges at their outer extremities and are bolted together over a pipe. A pipe engaging support is provided in conjunction with the outwardly disposed portions of the spacers in a manner wherein a rigid structural support is located adjacent to the surface of the pipe which serves to support and carry symmetrically disposed pipe engaging set screws. Thrust rods are connected to the assembly intermediate outwardly disposed connecting bolts and the set screws. The anchor assemblies of the invention have been shown to provide substantially enhanced anchoring resistance to thrust forces.

Abstract: An annular member to be fitted around a small-diameter pipe has drawing means and pressing members. The drawing means connect the annular member to a large-diameter pipe, and the pressing members to the small-diameter pipe to thereby connect the small-diameter pipe and the large-diameter pipe together.