Abstract: A frangible fluid conduit fitting particularly suitable for servicing aircraft wherein the fitting is attached to an aircraft service bulkhead coupling. The fitting consists of two parts, one attached to the supply hose and the other attachable to the bulkhead coupling. The fitting parts are maintained in a sealed assembly relationship by a frangible connector having two separate frangible sections. One frangible section fracturing and releasing the fitting parts under excessive bending forces while the other frangible structure releases upon excessive tension forces being imposed upon the fitting.

Abstract: A breakaway coupling for joining two hoses includes a main body and an end body which are telescopically connected. A frangible link holds the two parts together. The link is inserted in a recess formed in a surface of the coupling which spans the junction of the bodies. The link is subject only to tensile forces and is formed to break at across the center of the link, where the two bodies abut each other. Each body includes a check valve. When the two bodies are connected, the valves urge against one another to open the valves. The urging of the valves against one another also exerts a tensile force on the link to hold it in its recess. A spacer separates the valves so that high pressure flow will not close the upstream valve.

Abstract: Disclosed is a joint for connecting sprinklers to underground water pipes which is used to raise the head of sprinklers above the lawn by its double shelled inner and outer pipes engaged with each other by their male and female threads depending on the rise of the ground surface by supplying rich soil to the lawn, improved by providing a non-threaded portion to the end of female thread on the inside of an outer pipe so that male thread on the outside of an inner pipe can disengage from the female thread when the joint is lengthened up to its maximum length and/or improved by providing a plurality of stepped male threads to the end of the inner pipe with the smallest diametered one at the top and the largest diametered one at the base and providing an annular groove to the foot of each thread.

Abstract: An air diffuser assembly having multiple, various size inlet collars joined together with frustum shaped sections. Each of these sections contain a tear-away band around its perimeter which allows removal of unneeded collar sections. The assembly is mounted using a number of quick mounting clips.

Abstract: A rapid connection fluid coupling is disclosed, for connecting a first end piece, to which a cooling liquid flow duct or pipe of a motor vehicle engine is fixed, to a second end piece of a testing circuit, heater unit or other vehicle element. The first end piece has a perforator for a closure positioned in the end piece prior to filling the engine with the cooling liquid. The closure comprises a seal with a membrane made from an elastomer material, such as rubber or other similar material, having the general form of a cup with a bottom having weaker zones for tearing the cup after perforation at its center. The zones are formed as a star with radiating arms whose ends are on a circle which defines an annular zone with the periphery. The free end of the lateral wall of the membrane is molded on a frame with an L shaped half cross section and has at least one and preferably two peripheral lips oriented from the end towards the bottom while diverging with respect to the lateral wall.

Abstract: A rapid connection fluid coupling includes first and second end pieces. The first end piece is adapted for fitting to a duct or the like such as in the cooling liquid circuit of a motor vehicle engine. The first end piece includes a closure or seal coaxially positioned therein for sealing the flow path through the first end piece when the second piece is not connected thereto. A perforator is supported by the first end piece and positioned in the fluid passageway of the first end piece for perforating the closure when the second end piece is interconnected to the first end piece.

Abstract: In order to simply and economically fix to an internal-thread coupling (12) a pipeline (17) furnished with two slidable external-thread connections (15, 18), the invention contemplates fabricating the two external-thread connections (15, 18) together in the shape of one part only. At a predetermined screw-in torque, one external-thread connection (15) is torn off and as a result one pipeline end (16) is safely retained in the internal-thread coupling (12). The second external-thread connection (18) may be slid to the second end (21) of the pipeline and can fix the latter to a further internal-thread connection. The fixing means and methods contemplated by the invention are automation compatible and, upon fixing, protect the pipeline from being detached from the coupling through faulty handling.

Abstract: A faucet extended nut for both anchoring a faucet to a sink and connecting the faucet to a water supply line under confined conditions. The nut includes an outer extended part adapted to be threadedly rotated on a faucet stem extending through an opening in the sink top to draw the faucet tightly against the upper side of the sink and an inner extended part adapted to be threadedly received within the outer part to force the end of a water supply line into sealing engagement with the stem. Each of the parts are of sufficient length to extend below the sink's bowl, and wrench engaging flats are defined on the lower end of the parts to apply torque to the parts without having to work in the confined area defined between the sink's bowl and the adjacent wall.

Abstract: A flashing including an elastomeric collar with an inner surface and an outer surface and adapted to seal against more than one size of a vent pipe passing vertically through a central opening in the collar. The elastomeric collar has a circular base adapted for interconnection with a base member and a central opening including a first annular ring defined by a separation circle and a second separation circle, at least one additional annular ring outwardly therefrom that is frangibly separable from the first annular ring at the second separation circle and frangibly separable from the elastomeric collar at a third separation circle. Each annular ring selectively is removable by a pull tab that extends vertically from the outer surface of each annular ring at a location proximate to the separation circle of that ring with respect to the elastomeric collar.

Abstract: Contact surfaces of a water meter (1) and a base (2) of a meter support (3) comprising a water inlet duct (4) and a water outlet duct (5) are each bordered by an annular shoulder (6, 7). An assembly ring (8) is provided so as to keep the two annular shoulders (6, 7) in contact, this ring (8) comprising slits (9) separating a series of elastic fingers (10). The ring (8) comprises moreover on its inner face an annular groove (11) complementing the two annular shoulders (6, 7). A rigid collar (15) force-fitted onto the elastic fingers (10) and bearing against outwardly projecting lugs (12) at the ends thereof keeps the annular groove (11) against the annular shoulders (6, 7) which are in contact.

Abstract: A frangible male coupling component for sealingly coupling a conduit to a fluid delivery device of the type having a female coupling component with a threaded axial passage therethrough and an internal camming surface in the passage. The male coupling component has an integral tubular body of one-piece construction sized to coaxially receive the conduit to be coupled. The tubular body has an axial inner ferrule portion engageable with the camming surface, an axial outer screw portion, and an annular frangible portion integrally connecting the ferrule and screw portions.

Abstract: A break-away coupling device for use with a hoseline or pipeline for conveying hazardous fluids. The coupling comprises coupling members (10, 11) of generally tubular form for connection at their outer ends (14, 15) to a hoseline, pipeline or other fluid-supply or fluid-delivery point, and provided at their inner ends with complementary faces (12, 13) which are held in sealing engagement by frangible connectors (18). The coupling members have valve seats (45), and valve members (30, 31) which are urged towards closing engagement with said seats but are usually being held against the springs (36) and out of engagement with the seats until the coupling members are separated on breaking of the connectors. An annular separating ram (51) is provided to apply pressure between the coupling members which will break the connectors and separate the coupling members, whereupon the valve members will seat under spring action and minimize spillage of the fluid being conveyed.

Abstract: A novel fluid coupling and seal assembly. The assembly includes a coupling body 12 having generally concentric first and second bores 36,38 of greater and lesser diameters, respectively, the first bore also being provided with a generally cylindrical groove 44. A resilient retainer 14 is assembled within the generally cylindrical groove, the retainer having a plurality of prongs 52 which extend inwardly and towards the second groove. A seal assembly 16 is disposed within the coupling body between the retainer and the second bore, the seal assembly including an O-ring 60 formed of an elastomeric material and a tearable diaphragm 64 integral with and of the same material as the O-ring and capable of blocking the passage of fluid through the O-ring prior to the insertion of a fluid line 24. The fluid line which is adapted to be associated with the coupling is provided with a flange 26 which is engaged by the free ends 58 of the resilient prongs to hold the fluid line within the coupling assembly.

Abstract: A device for irrigating the intestines that can be employed during surgery with an irrigating cannula for introducing a rinse and with a drain. To ensure irrigation during surgery of a section of intestine of any diameter upstream of the stenosis while avoiding any contamination of the operating field, the drain consists of an adapter connected germ-proof to a hose and of a plastic fastener securing the intestine to the adapter.

Abstract: A breakaway coupling, a conduit system utilizing the coupling and methods of making the same are provided, the breakaway coupling being adapted to be incorporated into a conduit system and comprising a pair of tubular coupling members each having opposed ends one of which is adapted to be interconnected to a part of the conduit system and the other of which is held in sealing and coupling engagement with the other end of the other coupling member until uncoupled therefrom by a certain axial force being created therebetween, the breakaway couping having a frangible unit holding the coupling members in their coupled engagement until the certain axial force breaks the frangible unit to thereby uncouple the coupling members, the frangible unit comprising a tubular sleeve unit having opposed ends and an annular frangible section intermediate the ends of the sleeve unit that breaks in an annular manner when the certain axial force is applied between the coupling members.

Abstract: A mechanical pipe joint comprising a substantially cylindrical body integrally formed with a plurality of pipe restraining members, and a plurality of pipe clamping members, each comprising at least one block slidably engaged with a pipe restraining member, a compressible gasket for graduating suddenly applied forces, and restraining bolts. The clamping system, acting to distribute the clamping forces on a large portion of the surface area of a pipe, simultaneously absorbs and graduates suddenly applied forces, preventing failure of the pipe point.

Abstract: A quick connect coupling assembly comprising a housing having an internal passage divided into a large entry end and a reduced diameter, coaxially aligned smaller passage for receiving a tubing adapted to fit into said passages and to snap into fluid-tight sealing relationship with said smaller passage. The assembly includes an improved retainer for preventing disconnection of the tubing and, optionally, a perforatable dust shield for sealing the entry passage of the housing during shipment and handling prior to insertion of a tubing conduit, and after perforation by the tubing upon assembly, then seals the tubing in the housing entry passage. A subassembly comprising the housing, retainer and dust shield is also disclosed.

Abstract: This invention relates to a peripheral connector for a standard coupler, which permits the coupler to be remotely connectable and disconnectable. A male unit and a female unit of the invention enclose a male half and a female half of the coupler, respectively, and cover them with protective boots. A female unit projects an assembly, thereby opening the boot covering the female coupler half. The projected assembly pushes against portions of the male unit, opening the boot covering the male unit, and connecting the coupler. Disconnection is accomplished by moving the projected assembly in the opposite direction.

Abstract: A drainage element is provided comprising a generally cylindrical body into which a removable gasket is inserted in the lower end thereof. Located above the gasket are pipe stops which project inwardly from the interior wall of the body. The drainage element is useful with a drain pipe which is inserted into the gasket to butt the pipe stops or the gasket can be removed, the pipe stops broken away from the body and the drain used with a drain pipe of which the upper edge butts the lower edge of the body.

Abstract: A seal protector (10) embodying the concepts of the present invention is employed to guide the insertion of a drive axle (not shown) through the central opening (33) of a seal (31) and to protect the seal (31) from any injury that might be occasioned to the seal (31) by virtue of any sharp edges and/or burrs that might be present on the drive axle being inserted through the seal (31). The seal protector (10) incorporates a sleeve (35) having a proximal end (36) and a distal end (38). Handle means (44) are operatively secured to the proximal end (36) of the sleeve (35). A parting groove (50) extends between the proximal and distal ends (36, 38) of the sleeve (35) to permit the annular integrity of the sleeve (35) to separate by the application of a radially directed force to the handle means (44). A radially oriented reinforcing flange (42) may extend circumferentially of the proximal end (36) of the sleeve (35), and if so, it would be provided with a radially oriented, second parting groove (55).

Abstract: A spigot-and-socket joint which is secured against pulling apart, particularly for socket pipes manufactured by centrifugal casting or molding, wherein the spigot end of one pipe is pushed into the socket end of another pipe, with radial play, comprises a sealing ring and a gripping ring in the socket pipe, the gripping ring comprising a plurality of gripping segments mutually spaced circumferentially and each having a spherically convex radially outer surface and being interconnected in the circumferential direction by a vulcanized intermediate piece of rubber or the like, and a toothed configuration on the radially inner surface, so that when axial tensile forces arise at the joint, the toothed configurations are pressed radially inwardly against the spigot end by interaction of the spherically convex surfaces with an interior conical surface of the pipe socket which interior surface narrows in the direction of the distal end of the socket.

Abstract: The box has an end wall and four side walls extending therefrom to an open end. The end wall and each of the side walls has a plurality of different size concentric geometric figures formed by grooves in one side thereof whereby the end wall and each of the side walls may be cut along the grooves to form different size openings for receiving different size conduits for the flow of air therethrough. The open end of the box is adapted to be coupled to an inlet formed through the wall of a house or building for use as a register box. A wye connector adapter plate also is provided for connection to the open end of the box whereby the box may be used as a wye connector. The adapter plate has a plurality of different size concentric geometric figures formed by grooves in one side thereof whereby the adapter plate may be cut along the grooves to form different size openings for receiving different size conduits for the flow of air therethrough.

Abstract: A quick connect fluid coupling, and more particularly a quick connect fluid coupling having a minimum number of parts, which can be quickly assembled and disassembled, and which provides a good seal in an environment which is subject to vibrations and to relative motion between a fluid line and a port defining structure.

Abstract: An improved pipe coupling protector including a thread protector with sleeve is disclosed. Moreover, a method of installation is also set forth. When manufactured, the sleeve is sized to fit over the threads on the exterior of a pipe end and has a surrounding end shoulder with a transverse cap. An undercut defines the cap for removal by puncturing action to enable the sleeve to move up the threads. At the time of installation, the pipe is threaded to a coupling. A lubricant or sealant is applied to the threads. The coupling and the sleeve of the present disclosure completely cover over the threads and they are sealed against atmospheric intrusion and capillary fluid flow along threads and at the coupling face by the sleeve with an underlying layer of sealant or lubricant.

Abstract: A control cable assembly has variable travel length and variable types of end fittings. Interchangeable rods and hubs of varied configuration and length are selectively screwed onto the threaded heads of connectors fixed to the ends of the core and conduit respectively. Hub liners are snapped off at grooves to desired lengths and are positioned between the core and hub.

Abstract: A hanger assembly 10 for suspending an inner pipe string 32 within an outer casing 16 from a particular location therein. The hanger assembly includes a hanger body 30 and an expandable locking assembly 46 comprised of a plurality of latching fingers 77 secured at their lower ends about the hanger body by a split retainer ring 48 which permits limited pivotal movement of the latching fingers about their lower ends. Each latching finger 47 is provided with a hook surface 71 adjacent its upper end adapted to engage an upward facing abutment 20 on the inner profile of the outer casing. The free ends of the latching fingers are urged outwardly by a circular spring 58.

Abstract: Radial device for anchoring one end of a flexible tubular structure to a mating flange, characterized by a flexible tubular structure having a bead reinforced by an armature embedded in rubber, one-piece and rigid at the time of manufacture of the tubular structure but mechanically divisible into predefined segments at the time of the flexible tubular structure mounting, to allow the bead to bend so that it can slide into the bore of the rigid wall.The invention applies to any industrial assembly, for example expansion joints or air suspension diaphragms.

Abstract: The sports wheelchair includes a frame portion (A) having left and right side frame portions. Rear wheel assemblies (B) are connected with the left and right side frame portions such that the rear wheels are connectable to the frame in any one of a plurality of positions and with an adjustable camber. A pair of front wheel assemblies (C) selectively interconnect front wheels with the frame with any one of a plurality of adjustable height, inward-outward, and forward-aft positions. An operator supporting seat (D) having a segmented center portion and an outer portion is selectively interconnected with the left and right side frame portions. A folding mechanism (E) enables the left and right side frame portions to be folded together for easier transportation and storage.

Abstract: A flangible ring, for securing together the adjacent flanged ends of the upper and lower barrel sections of a fire hydrant, has two weakening grooves therein instead of the usual one. One of the grooves is conventional and located in one face of the ring just inside the circular array of bolt holes in the ring. The other weakening groove is formed in the other face of the ring and is of greater mean diameter but of smaller, width and depth than the first groove. Preferably the sides of the other groove are straight in radial section, disposed at an angle of the order of 60.degree. to the face of the ring and an extension of the inner side thereof intersects the intersection of the bottom of the larger groove with a side thereof.

Abstract: It is a question of a valve subplate on which valves or other components may be mounted. The subplate has a prismatic, i.e. plate- or block-like form, and serves for the supply of the valves or similar components through at least one internal duct, when opens at one end at a mounting surface adapted for the attachment of the valves, and at the other end at a connection side of the connection member for joining with a pressure fluid line or the like. At its end arranged on the connection side the duct is connected with a duct section having a threaded socket extending thereinto and also with an outwardly projecting male nipple extending from the connection side and formed integrally therewith and adjoining for example a further duct section coaxially or parallel to the axis thereof so that the nipple is connected with the said duct, and a pressure lead or the like may selectively connected with the threaded socket by virtue of the screw threads thereon or slipped onto the male nipple.

Abstract: A drain for a tile-covered concrete floor over a plywood form base. The drain has an annular internally screw-threaded base member with a bottom flange that can be nailed or screwed to the form base, an annular body member threadedly received in the base member and having its lower end fitting with a drain pipe, a membrane and a dished membrane retainer overlying a top flange on the body member, a clamping ring screwed onto the outside of the upper end of the body member above the membrane retainer, and an annular strainer support screwed into the upper end of the body member and providing a seat for a strainer plate.

Abstract: An adapter (10) as disclosed which is employed to join a heater (12) and an air conditioning evaporator (14) in an air conditioning system. The adapter (10) is provided with a series of slidable panels (60, 62, 64) which permit the adapter to be sized to fit a particular heater (12) by breaking off selected segments of the panels along a series of frangible connections (74, 84). In a second embodiment, an adapter (100) is provided with end panels (108) and side panels (112) which also include segments that can be broken off from the panels along a series of frangible connection (118). The panels (108, 112) are secured about the edges of the frame (102) of the adapter (100).

Abstract: A fluid-tight connection between a pair of pipes containing hydraulic fluid is formed by a pair of connectors of the invention. Each connector has a body part engaged respectively with the pipes, the body parts being coupled together by a coupling sleeve which engages a shoulder 20 of one of the body parts and is locked to the body parts by a circlip 23 engaged within grooves 22 and 25 respectively in the other body part and the sleeve. Each body part has a respective seal member each incorporating a diaphragm sealing over an end of its associated body part and a bead engaging the internal wall of the sleeve. Air trapped between the diaphragms is expelled past the seal members during insertion of the connector parts into the sleeve. Application of system pressure subsequently ruptures the diaphragms to establish communication between the pipes and urges the seals outwardly to seal against leakage of system fluid.

Abstract: An improved stab-type coupling of the type used for connecting an end portion of a smooth wall non-metallic pipe or tube to fittings or other pipes or tubes wherein the coupling body has a first end area including an internal recess adapted to receive the end portion of a smooth walled non-metallic pipe. An elongated hollow insert is disposed within the recess for receiving the pipe end portion axially thereover. At least a pipe gripping member is disposed within the recess in a radially spaced surrounding relationship with a portion of the insert to retainingly engage the pipe end portion as it is inserted axially therepast. The improvement comprises a closing structure associated with the body first end area for closing the recess and thereby protect the coupling interior. The closing structure accommodates selective removal of a portion thereof from the body to expose the recess prior to receipt of a pipe end portion thereinto.

Abstract: An improved coupling (10) to be embedded in concrete (101) is described. The coupling includes multiple concentric rings (11c) on an outside wall (11a) of a tube (11) which aid in preventing leakage along the outside wall and which help in providing fire retardancy. The coupling includes a step form (14) having a regular diameter which aids in positioning the coupling using a template (105).

Abstract: A tube fitting with a one-piece ferrule adapted to shear during assembly into two cutting rings for serial setting of the cutting edges thereof into the tube surface. The rear cutting ring is deformed and guided by the previously set front cutting ring at a preferred cutting angle. Engagement of abutment surfaces on the cutting rings determines a final position for the rings and provides a signal to the assembler that the joint is completed. The undeformed ferrule includes a conical front cutting ring having a cutting edge of one diameter, a cylindrical rear ring having a cutting edge of larger diameter, an external annular groove and an enlarged bore therebelow which in part forms the rear cutting ring and controls deformation thereof. The annular groove is placed to define a shear zone between the cutting rings and the shoulders of the groove are the abutment surfaces for determining completed joint position.

Abstract: A sleeve-shaped pipeline coupling device for pipelines which is divided at least once in a direction transverse to the circumferential direction and adapted to be placed into close sealing contact against the outer wall of the pipeline. The coupling device includes at least one radial shoulder having an outer wall with an opening and a pipe fitting member portion being provided with a radial opening. The pipe fitting member portion includes a radial flange at one end having at least one arresting member formed integrally with the side thereof facing away from the pipe fitting. When the pipe fitting member portion is engaged to the coupling device, the arresting member engages the edge of the opening formed in the shoulder and the flange is in sealing contact against the shoulder.

Abstract: An improvement to a universal flashing for roof top and vent pipe geometries characterized by differing pipe diameters and roof slope angles. The present improvement relates to a ring collar assembly which comprises a plurality of stepped sealing portions, each portion adapted to engage a different vent pipe diameter and frangibly be separated from the wall of said body member, wherein for a given pipe diameter a sealing portion further comprises a set of first and second projections disposed generally perpendicular to the flashing body centerline, each extending from a proximate end to a distal end which defines a circular flange surface spaced first and second dimensions about the centerline. The first dimension is less than the second dimension and both first and second dimensions are less than the outer diameter of the given pipe diameter for which sealing engagement is desired, and the projections are of a uniform thickness less than the wall thicknesses of the body member.

Abstract: An improved gasket sealing motor leads which extend from the interior of an electric motor enclosure. The gasket is provided with one or more resilient, conical bushings whose diameters extend through a wide range of lead diameters. By severing the bushings at an appropriate point, round apertures are formed through which the leads can be pulled and sealed. The flat portion of the gasket which surrounds the bushings is secured to the motor enclosure in a conventional manner.

Abstract: A catheter holder system particularly useful for the stabilization of medical tubes and the like, particularly useful for association with ostomy receptacles. The catheter holder comprises a molded, conformable plastic member much in the configuration of a funnel or the like having a planar, annular or base portion wherein the member is of semi-rigid, upstanding construction whereby the extreme terminus of the funnel portion terminates in a tip portion which is easily separable in order to accommodate and receive various size medical tubing therethrough in order to maintain the tubing in a secure and stable position relative to the patient with which the tubing is utilized. In most instances the tubing will comprise a catheter which may be passed through the funnel portion of the member and snugly retained by friction fit therein.

Abstract: A fluid coupling assembly 100 which is capable of interconnecting an oil cooler 26 disposed within a radiator header 12 with an oil line 130 terminating outside of said header. The coupling assembly includes a female fitting 106 which is capable of being brazed about a port in an oil cooler, the female fitting being provided with a threaded aperture which receives the externally threaded end of a male fitting 104. The male fitting is provided with an outwardly extending portion which is adapted to bear against one surface of a header wall, the female fitting 106 bearing, through a compressible washer 108, against the other surface of the wall 54. The male fitting is further provided with a circumferential groove in a cylindrical end portion which is capable of having a quick coupler 102 connected thereto. The quick coupler can be initially screwed onto the threaded end of an oil line 130.

Abstract: A pipe connection fitting for connecting a branch pipe to a main pipe has a body with a nipple adapted to enter a branch opening in a main pipe and a bore in communication with the nipple for the connection of a branch conduit to the body. A seal surrounding the nipple for sealing against the pipe is mounted on the body. A pair of opposed ears are integral with the body. A strap has its free ends removably secured to the ears respectively. The strap has a threaded opening midway between the ends thereof with a break-away screw threaded through the threaded opening for engaging the pipe to secure the body to the pipe.

Abstract: A fastening assembly includes:(a) an axially elongated fastener having axially spaced differentially threaded portions respectively adapted to threadably engage threaded extents on members to be interconnected, and(b) structure extending at the side of the fastener and having interconnection therewith characterized as facilitating transmission of torque to the fastener to rotate the fastener about the axis while allowing relative axial displacement between the fastener and the structure, whereby the threaded portions are then adapted to threadably interfit the threaded extents to make-up the assembly.

Abstract: A hollow cylindrical member having a plurality of sets of threads formed on its exterior such that the member may be used as a nipple of one length or severed at different positions to form up to three useful nipples of lesser lengths.

Abstract: A coupling includes a receiving part having an external thread which can be crewed into a threaded bore and includes a plug-in part, which can be plugged into and coupled to the receiving part. A retaining ring is secured to the front end of the receiving part, for example through engagement with a groove in the receiving part, and during plugging in of the plug-in part engages a groove provided in the plug-in part. Widening of the retaining ring is limited by the wall of the threaded bore. By unscrewing the receiving part from the threaded bore, the retaining ring can be released by widening it at an interrupting slot, after which the plug-in part can be removed from the receiving part. The coupling is short, which is achieved in such a manner that, due to the arrangement of the retaining ring at the front end of the receiving part, the entire length of the receiving part can be used as a guide for the plug-in part.

Abstract: A remotely releasable connector for a pair of pipes including first and second sets of engageable threads on the first and second pipes, first and second aligned recesses on the exterior of the pipes, a latch received in both recesses to prevent relative rotation of the pipes, and a release ring supported around the exterior of the pipes and longitudinally movable therealong to engage the latch to remove it from the locking position.

Abstract: A frangible pipe coupling includes a pair of pipes with a plurality of frangible connectors extending between the pipes and normally holding the pipes in sealed engagement with one another. An annular member surrounds one of the pipes and is slidably mounted thereon for longitudinal sliding movement relative thereto, the annular member cooperating with the pipe to form a chamber therebetween. Fluid is supplied under pressure into the chamber to effect longitudinal sliding movement of the annular member relative to the pipe, the annular member being connected to the frangible connectors to cause the relative movement between the annular member and the pipe to break the frangible connectors and thereby separate the pipes from one another.

Abstract: A laundry outlet box comprises a box-like one-piece molded plastic housing having top, bottom and side walls circumscribing an axis of the box and a back wall and open front face normal to such axis. The bottom wall of the housing slopes downwardly toward the center to a drain opening and is provided at its underside with a tailpipe adaptor including coextensive radially spaced pipe-like extensions concentric with the drain opening, which extensions are adapted for selective coupling to drain pipes of different sizes. The housing is adapted to be recess mounted in a wall between vertical wall supports by interchangeable L-shape mounting brackets arranged in pairs on each side of the box with the laterally extending legs vertically spaced apart and adapted to have optionally secured therebetween electrical outlet boxes at one or both sides of the box.

Abstract: A threadless pipe fitting of the "stab-in" type wherein a fluid tight connection between a cylindrical conduit and fitting is achieved merely by inserting the fitting upon the conduit end. An annular elastomeric seal within a groove defined in the fitting conduit receiving bore engages the conduit outer surface in a combination compression and lip seal manner wherein both elastomeric compression forces and fluid pressure forces maintain a sealing engagement between the seal and conduit. Additionally, set screw means radially threaded into the fitting mechanically maintain the conduit and fitting assembly, and the set screw includes torque limiting means for preventing excessive radial forces, and the nose of the set screw means is shaped to provide maximum frictional engagement with the conduit with minimal radial force.

Abstract: A system to monitor the amount of erosion taking place within a pipe in which a point of reduced strength of the pipe is made by drilling a hole or notch to a preselected depth in a selected portion of the pipe wall. A hollow casing is provided around the point of reduced strength to provide a sealed zone. A conduit in the hollow casing is connected to a sensing device to monitor pressure changes when pipe failure occurs at the hole or notch.