Abstract: An apparatus is provided for pressure testing pipe and fittings systems. A seal has a disk portion and a flange portion. The seal is permanently attached to the inside of a fitting on the distal end of the pipe section to be tested, thereby blocking fluid flow. The section is installed and tested by conventional means. After testing, a pull-tab formed in the seal is removed to permit fluid flow through the seal. Subsequent sections can then be installed and tested.

Abstract: A pressure connector is used to temporarily connect a pressure head with a device to be tested under pressure. The pressure head engages a flat surface around an opening and seals against it without any leakage. The pressure head includes a seal head with a seal therein for engaging the flat surface of the device to be tested. The seal head is moveable axially in either direction for a limited distance on an arbor. Suitable compression springs permit the seal head to adapt to slight differences in stroke requirements as the pressure head is used with different parts to be tested. The test pressure, preferably air pressure, is introduced and acts on the seal head and the cup-like seal in the seal head, urging the seal head and the seal into full surface sealing engagement with the flat surface around the opening into which the test pressure is to be introduced into the device being tested.

Abstract: The test plug assembly is used for pressure testing of fluid drain and vent systems. The assembly comprises an inflatable body portion or bulb connected to a rigid holder portion. The rigid holder portion includes a stem section and a plug section. The stem section is hollow and opens at one end into the inflatable body portion and at the other end receives a valve for pumping fluid pressure into the bulb. The body portion is separable from the plug section and includes a clamping edge structure extending along the entire periphery of an open mouth. The plug section has an outer structural configuration to engage the test opening of the fluid drain and vent systems. The plug section also has an inner clamping surface to engage the open mouth clamping edge structure of the body portion. A clamping mechanism is used to secure the clamping edge structure of the body portion against the inner clamping surface of the plug section.

Abstract: A body is provided with longitudinally spaced first and second annular grooves for receiving first and second longitudinally spaced annularly spaced seal and lock ring segment assemblies therein to sealingly engage and lock with a pipe coupling and a single pipe end engaged therewith for forming a fluid receiving test chamber that extends across the single connection between the pipe end and the coupling. A fluid passage in the body conducts fluid to move said first and second seal and lock ring segment assemblies into sealing and locking engagement with the pipe and coupling, respectively, to form the fluid receiving test chamber. A second passage conducts fluid to the chamber for testing the single connection between the members from inside the members to the exterior thereof through the single connection. A leak in the connection is determined by instrumentally noting a pressure drop in the chamber or by visually noting leakage of fluid at the connected pipe coupling end.

Abstract: A cigarette testing apparatus wherein the cigarettes are transported in axially parallel peripheral flutes of a testing drum toward, past and beyond a testing station. A wobble plate is adjacent to one end of and rotates with the drum and supports a set of sleeve-like elastic sealing elements each of which is slipped onto the adjacent end of a cigarette when it approaches the testing station. The sealing elements are surrounded by resilient annular clamping members which tend to reduce their inner diameters and automatically compel the respective sealing elements to sealingly engage the peripheries of the inserted ends of cigarettes at the testing station. Pivotable cams are provided on the wobble plate to expand the clamping members downstream of the testing station in order to permit extraction of the ends of tested cigarettes from the sealing elements and insertion of untested cigarettes into the respective flutes.

Abstract: A high pressure pipe stopper includes an elongated stem having a threaded section and terminating at a first end in a conically shaped mandrel having an exterior surface sloped at an angle of about 5.degree.. The pipe stopper also includes a plurality of grip segments about the stem and a nut engaged with the threaded section to force the grip segments up along the mandrel. The pipe stopper may also include an extractor coupling connected between the nut and grip segments such that the grip segments are drawn down the mandrel when the nut is turned away from the mandrel.

Abstract: The test plug is used for testing water or sewer lines for leaks. It comprises a hollow inflatable bulb attached to a handle. The bulb has an opening in fluid communication with an aperture extending through the handle. The bulb is inserted into the opening of the line and air under pressure is injected into the bulb to cause it to inflate to form a seal in the line for test purposes. After the test, the bulb is deflated and removed from the opening. The bulb has a plurality of ridges on its inside to cause the bulb to return to its original shape upon deflation. The ridges are in two sets. One set of ridges are in spaced apart lines, each of which extends from near the opening of the bulb to the opposite end thereof. The other set of ridges are in spaced apart lines each of which extends continuously around the inside of the bulb near the end opposite its opening.

Abstract: Apparatus for providing a source of fluid pressure comprises a suction pump in the form of a spring-loaded bellows. The pump includes structure for registering a deviation of the bellows from a position of equilibrium, when coupled to a union, in response to leakage of a seal under test.

Abstract: A leakage testing apparatus includes a pull bar surrounded by an array of arcuate segments having teeth that engage and deform the inner surface of a tube. When tension is applied to the pull bar, a cam forces the segments to move outwardly to contact the tube while maintaining a parallel relationship to said pull bar.

Abstract: An apparatus and method are provided for pressure testing pipe and fittings systems. A seal has a disk portion and a flange portion. The seal is permanently attached to the inside of a fitting on the distal end of the pipe section to be tested, thereby blocking fluid flow. The section is installed and tested by conventional means. After testing, a pull-tab formed in the seal is removed to permit fluid flow through the seal. Subsequent sections can then be installed and tested.

Abstract: There is disclosed a test stand for the pressure testing of a valve which comprises a flat support table defining a valve testing station onto which a port of a valve can be placed, means provided in the support for directing fluid pressure medium into the port when the valve is placed on the support table, and a set of jaws uniformly spaced around the testing station and mounted for slidable movement in unison along respective radial guides between a release position in which a valve can be placed on, or removed from, the support table, and a holding position in which the jaws engage with the valve, or a part connected to the valve, in order to centralize the valve between the jaws on the testing station.

Abstract: This concerns a core holder for a rock core in a resilient sleeve within a hollow housing. Longitudinal and radial forces are applied to the core. Fluid samples can be obtained at selected points along the length around the diameter of the core during injection of fluids therethrough. It concerns a special stem and seal for providing fluid or gas communication from within the resilient sleeve and the exterior of the housing.

Abstract: A pneumatic pipe leak tester which includes: a compressed air source; a conduit of a first circuit connectible through an on-off valve to a pipe to be examined and provided with an electromagnetic valve; a conduit of a second circuit connectible through an on-off valve to a pipe to be examined and provided with an electromagnetic valve; a main conduit connecting the conduits of the first and second circuits to the compressed air source; a conduit of a third circuit communicating the conduits of the first and second circuits with each other; a calibration conduit branched off from one of the conduits of first and second circuits and connectible to a reference pipe through an on-off valve; an electromagnetic valve inserted in the conduit of the third circuit; a pressure transducer connected parallel with the electromagnetic valve of the third circuit C; and a detector adapted to produce a leak signal when the output signal of the pressure transducer exceeds a predetermined value; and a mechanism for sealing com

Abstract: This seal check apparatus is mounted on a track press and checks the airtightness of a track joint immediately after the completion of assembly of a track chain using the track press. The apparatus comprises a base assembly mounted on the track press; a vacuum head which is engageable with and disengageable from the track joint on the track press; a member provided with freedom of displacement on the base assembly and supporting the vacuum head with freedom of displacement; a first actuating member provided on the base assembly and displacing the vacuum head supporting member; a second actuating member provided on the vacuum head supporting member and displacing the vacuum head; a gas system for sucking gases from the vacuum head when the latter engages the track joint; and a control member for controlling the operations of both actuating members and the gas system.

Abstract: A testing device is disclosed for testing a drainage system for leaks, the testing device being selectively connectible to a source of fluid flow. The testing device includes an elongate tubular member having a first and a second end. The tubular member is disposed in fluid tight series communication between the drainage system and the drain. The tubular member defines an internal annular ledge which is disposed between the first and the second end of the tubular member. The tubular member also defines a first lateral hole which is disposed longitudinally away from the ledge. A removable blocking disc sealingly engages the ledge for temporarily preventing flow of fluid from the drainage system to the drain during the testing of the system for leaks. A closure is disposed within an access opening for permitting access to and removal therethrough of the blocking disc from the tubular member subsequent to the testing of the system after the removal of the closure from the access opening.

Abstract: Cigarettes in the peripheral flutes of a rotary drum-shaped conveyor are tested while their end portions extend into elastic tubes which are deformable radially inwardly into sealing engagement with the wrappers of the respective end portions in response to axial deformation directly by the respective end faces of the conveyor. The tubes are mounted on two ring-shaped carriers which are adjacent to the end faces of the conveyor and rotate about axes which are slightly inclined with reference to the axis of the conveyor so that each tube approaches the conveyor during one-half and moves away from the conveyor during the other half of each revolution of the conveyor and that corresponding carrier. A gaseous testing fluid is admitted into the ends of cigarettes while the tubes are deformed so that they are in sealing engagement with the wrappers of the respective cigarettes.

Abstract: The invention concerns a press for the testing by means of internal pressure of tubes provided with threaded ends, in which end pieces screwed in a pressure medium-tight manner on the tube ends are inserted into the sealing heads of the press. The end pieces are cap-like and have radially arranged connecting boreholes so that the pressure medium feed is radial in contrast to the axial pressure medium feed of the familiar constructions. No appreciable axial forces thus arise between the tubes and the test heads. In addition, the outer end of the cap-like end pieces facing away from the tube serves for the coupling of a shaft, which can displace the tube with the end piece axially and act upon it with a torque. Furthermore, the sealing head is readily detachable in a like manner in a retaining head and is inserted pressure medium-tight to the outside, just as the end pieces in the sealing heads.

Abstract: A fluid test apparatus for high pressure valves consists of a massive rigid supporting frame having a supporting table portion with an opening for application of fluid pressure to a valve being tested and an end sealing arrangement for sealing one opening to such valve. A pair of fluid operated cylinders are positioned on opposite sides of the supporting table and have extended pistons operable to be retracted upon application of fluid pressure to the cylinders. A clamping bar extends between the ends of the pistons and supports an end closure and seal for closing another opening to the valve being tested. A control system is associated with the apparatus to control the application of fluid pressure to the cylinders to retract the pistons to clamp and seal a valve being tested, and to control the application of fluid pressure to such valve in either open or closed position to test both the valve and the valve body for leakage.

Abstract: A seal of composite construction for leak testing two piece "drawn" aluminum and steel cans and three piece welded steel cans. The novel can is formed of elastomeric materials of differing hardness which are molded together to form a single, integrally formed unit. More specifically, a core formed of a soft material is disposed in sandwiched relation to working surfaces formed of a harder material so that the beneficial and detrimental characteristics of such materials are synergistically maximized and minimized, respectively. In operation, the seal is axially displaced into and out of sealing registration with the open, flanged ends of cylinders to be used as portable containers. The hard working surfaces of the seal, or pad, resist abrasion and detect microsplits, thereby overcoming the limitations of conventional soft seals, while the soft core provides the needed resiliency, thereby overcoming the limitations of conventional hard seals.

Abstract: A sealing arrangement for the temporary attachment of a testing air line to the end of a cigarette has an essentially hollow cylindrical sealing body with flanges projecting radially to the inside and outside of the sealing end. The other end of the sealing body is held firmly. The outside edge of the outwardly projecting flange of the sealing body is inserted into a coaxial annular groove of the bore of a supporting body movable axially toward the held end to elastically deform the sealing body, permitting insertion or removal of the cigarette. In its undeformed state the sealing body seals against the cigarette end.

Abstract: The testing instrument for pipes or other cavities to be tested as to tightness includes an at least partially conical rubber plug, at each of the opposite ends of which supporting plates are provided. A pipe which extends through the rubber plug is rigidly connected to the supporting plate at the end having a smaller diameter and is passed through the other supporting plate so as to be movable. A protruding section of the pipe is provided with a thread and a pedestal is screwed to the threaded section. Two eccentric levers are tiltably mounted to the pedestal diametrically opposite each other and rest on the supporting plate at the larger diameter of the rubber plug. A crown member is provided on the pipe, to which a CO testing apparatus is connected. Variations of the rubber plug are disclosed, with which various openings which are difficult to seal can be securely sealed.

Abstract: The present invention pertains to a method and apparatus for testing casing for pressure and tension limits by inserting a sealing plug into both ends of the casing, threads on the plug for gripping the casing, and a compressible packing ring associated with the plug for sealing the casing, and thereafter pressuring and tensioning the plugged casing.

Abstract: The valve testing apparatus is adapted for testing a flanged device having a casing defining a chamber and at least one annular end flange disposed on a horizontal test plate having a fluid inlet. At least one clamping unit is provided which comprises a lever disposed in a radial direction relative to the center of the annular flange. The lever has an outer end detachably resting on an underlying support, and an inner end gripping a portion of the flange. A fulcrum is fixedly mounted above the lever intermediate its inner and outer ends. The lever is adapted to pivot about the fulcrum. A hydraulic ram exerts a vertical force against one end of the lever, thereby causing the inner end of the lever to exert a predetermined clamping pressure on the flange, so as to obtain a fluid-tight connection between the flange and the plate.

Abstract: A closure plug assembly for the pressure testing of liquid drain and vent plumbing systems including a T or Y test section with a test opening comprises a cap sub-assembly, sealing means for releasably securing the cap sub-assembly across the test opening, and a plug such as an inflatable bulb or plate removably insertable in the plumbing system adjacent the test opening for test-damming the flow of liquid upstream therefrom. Link means is connected to the plug for removing the same at the conclusion of the test operation. A valved port in the cap is used for filling the plumbing system with test liquid under pressure during a testing operation.

Abstract: A cigarette testing apparatus wherein a rotary drum-shaped conveyor has axially parallel peripheral flutes for cigarettes and is flanked by two swash plates which rotate therewith and carry annuli of elastically deformable sealing elements for the respective ends of cigarettes on the conveyor. Each sealing element has a socket facing the adjacent end of the cigarette in the corresponding flutes of the conveyor when the cigarette is inserted into the flutes. The swash plates thereupon move the sealing elements nearer to the ends of the cigarettes therebetween whereby the ends of the cigarettes enter the corresponding sockets and displace transversely extending partitions of the sealing elements with attendant radial contraction of those tubular sections of the sealing elements which surround the respective sockets.

Abstract: Apparatus for checking for leaks between the connection flanges of two portions of metal-clad electric gear, said flanges being sealed by means of two seals disposed concentrically in series on the facing surfaces of the flanges, the electric gear being filled with compressed gas, wherein the internal volume (10) lying between the two seals (6, 7) communicates with a smooth hole (11, 24) which itself communicates to the outside, the smooth hole being plugged by a resilient seal (18).

Abstract: A test head useful in the testing of compressed gas cylinders capable of withstanding high pressure. The water jacket head includes a neck seal including a spud insertable into the neck of a compressed gas cylinder for permitting a high pressure seal to be made to the cylinder. The present neck seal incorporates a permanent quick-connect sleeve for which mating male spud insert units can be designed for nearly any size cylinder neck. Changing the spud insert can be accomplished by hand, without removing the head from its use location. A diaphragm support spring is installed between the moving spud stem assembly and the top plate of the head which biases the spud stem assembly, thus increasing diaphragm life and preventing increasing reassembly difficulty following spud changes. Studs and screws replace welds in holding the top, side and bottom plates together which greatly alleviates the task of servicing inside the head when leaks eventually occur in the moving elements.

Abstract: An apparatus and method for hydrostatically testing the seal integrity against leakage of the sealing face surface of the end of a pipe is disclosed. A test pad is engaged against a sealing face surface of a pipe and urged into tight contact with said sealing face surface. Fluid is applied under pressure to the juncture between said test pad and said sealing face surface to determine the seal integrity against leakage of the sealing face surface.

Abstract: In a vertical type heat exchanger including a water chamber delimited by a drum end plate and a header plate on which a large number of heat transfer tubes are arrayed, a novel manipulator for working in the heat exchanger is provided such that a support frame is disposed within the water chamber, a base end portion of a freely extensible and contractible main arm which is rotatable about its base end portion and vertically swingable about a fulcrum at its base end portion, is mounted on the support frame, a base end portion of a sub-arm which is rotatable about its base end portion and vertically swingable about a fulcrum at its base end portion and also which can be positioned in parallel to the header plate, is mounted at the tip end portion of the main arm, a vertically movable clamp shaft which can be inserted into the heat transfer tube is provided coaxially with the rotational axis of the sub-arm, and a position detector for detecting the position of the clamp shaft so as to assist in positioning the c

Abstract: A hydraulic chuck device for use with the inside of a tube. Included is a body defining a chamber and a piston slideably mounted in said chamber. An axially centered stem means is mounted at one of its end on said piston and has a passage along its axis, while sleeve means slideably cover said stem means and are mounted on said body. Collet means are operably connected to said stem means and said sleeve means such that relative movement of one with respect to the other causes activation of said collets. First fluid means are connected to said piston to cause relative movement between said stem and said sleeve, and second fluid means are connected to said stem means for passage of fluid through said passage of said stem means into the inside of said tube.

Abstract: A head that engages a face of a tube sheet has a mandrel extending from it for insertion in a tube. Pressurized test fluid is introduced through a conduit in the mandrel into an annular fluid-flow space between the mandrel and the tube. The fluid, which is confined by seals, flows around one end of the tube to the joint and, if the joint is not tight, emerges at the opposite face of the tube sheet where it can be detected.

Abstract: The invention contemplates removable end-closure structure for sealed application to the end of a pipe of given outside diameter for hydrostatic pressure-testing the pipe. In the form disclosed, a circumferential wedge clamp is applied to the outer surface of the pipe end to be closed; a closure plate is applied in axial abutment with the pipe end; and a hydraulic flat jack is interposed between the closure plate and an outer reference or backing plate having circumferential connection to the wedge clamp. All parts may be in unit-handling relation, even when not mounted to a pipe end.

Abstract: A gimbal-type anvil for apparatus for testing in the integrity of a sealed container closure assembly. These assemblies generally comprise a container, a resilient sealing element mounted in the discharge opening in the container and a cup-like cap engaging over the stopper and seating it in place over the discharge opening in the container. The apparatus includes a force applicator for applying an external force to the cap in a direction to further compress the resilient stopper and a microscope to detect initial displacement of the cap relative to the container when the externally applied force exceeds the residual static force in the stopper. The gimbal-type anvil is operatively associated with the force applicator and consists of a housing and at least a pair of annular ring members pivotally connected to the housing about axes transverse to the longitudinal axis of the container closure assembly.

Abstract: The clamping apparatus is adapted for testing a flanged device having a casing defining a chamber and at least one annular end flange disposed on a horizontal test plate having a fluid inlet. At least one clamping unit is provided which comprises a lever disposed in a radial direction relative to the center of the annular flange. The lever has an outer end detachably resting on an underlying support, and an inner end gripping a portion of the flange. A fulcrum is fixedly mounted above the lever intermediate its inner and outer ends. The lever is adapted to pivot about the fulcrum. A hydraulic ram exerts a vertical force against one end of the lever, thereby causing the inner end of the lever to exert a predetermined clamping pressure on the flange, so as to obtain a fluid-tight connection between the flange and the plate.

Abstract: A self-purging fluid pressure adapter is disclosed which is connected between a fluid test pressure source, a fluid pressure gauge, and a fluid container undergoing a pressure test. The adapter rapidly purges fluid pressure from the pressure gauge when the container is disconnected from the adapter so as to quickly prepare the gauge for testing a next container on a conveyor belt. Two embodiments of the adapter are disclosed, the first operating on the jet pump principle and the second operating on the Venturi tube principle. In both embodiments the adapter includes a fluid pressure inlet chamber connected to the fluid test pressure source and a fluid pressure outlet chamber which is selectively connected to either the container under test or to an ambient fluid pressure.

Abstract: A crown release pressure tester for testing the pressure that is required for a crown carried on a container to fail or if the crown is leaking. The device includes an elongated housing which has a bore extending therethrough. The top portion of the container which has the crown that is to be tested threaded thereon is severed from the container and secured to the top of the housing in axial alignment with the bore. A piston threadably carried in the bore is rotated to increase the pressure imparted through liquid and compressed air until the crown releases from the top of the container. The pressure that the crown releases is recorded on a pressure gauge.

Abstract: A cylinder gripping apparatus having a jaw, a body and a floating interfacing assembly having a curved surface bearing against an opposing surface or groove, the interfacing assembly being operable to generate a proportional gripping force in response to an axial force upon the cylinder to be gripped. The jaw is not connected to the body. The interfacing assembly is operable to permit a transverse displacement of the jaw.

Abstract: A hydrostatic testing apparatus for capping an open end of a pipe, tube or cylinder is disclosed.A seal is provided to facilitate a fluid-tight seal between the pipe and the body. The seal has relatively long lips which facilitate a sealing engagement upon dirty or rough pipe surfaces. The seal is pre-stressed by lugs to sealingly engage the pipe under low pressure conditions.Adaptors, a centralizer having replaceable cam pieces, and replaceable jaw tooth segments facilitate the testing of a variety of pipe sizes and shapes with a single apparatus. An air purge valve is provided, in cooperation with passageways, to facilitate the expungement of air and gas from the interior of the body and pipe.A jaw design is disclosed which permits the side of the jaw to evenly grip the pipe by providing a pivotal attachment between the jaw and translator that is parallel to the axis of the pipe.

Abstract: A method and apparatus for testing the setting of a valve (particularly a safety valve mounted on a vessel) comprising a valve member biassed towards a valve seat, employs a pulling device which is engaged with the valve member and operated to apply a tractive force opposed to the bias which is just sufficient to separate the valve member from the valve seat. The pulling device is preferably operated by a hydraulic or pneumatic pump. The hydraulic or pneumatic pressure which is just sufficient to separate the valve member from the valve seat is indicated by a suitable gauge and is proportional to the tractive force. The sum of the tractive force and the force acting on the valve from inside the vessel and which can be calculated from the internal pressure indicated on a pressure gauge communicating with the interior of the vessel is indicative of the setting of the valve.

Abstract: The pivot or hinge joints of a track chain assembly of a track laying tractor each include lubricant cavities which are sealed by a pair of spaced apart seals. The seals each include a resilient rubber load member and a relatively rigid polyurethane seal member having an annular sealing lip which is biased into place by the load member when the seal is installed. The effectiveness of the seals is tested by adding a coloring agent or dye to the lubricant in the cavities being sealed, by operating the assembled chain in a mud box for a predetermined time, by disassembling the chain and then by inspecting the seal members to see whether or not surfaces thereof normally outside the sealed cavity have been contacted by leaking lubricant as evidenced by the presence of the dye.

Abstract: Method and apparatus for the testing of fluidic devices. An adaptor that provides a temporary interface with such a device is affixed to it and used to direct a gaseous medium into the device for the testing of its various portions.

Abstract: A comprehensive automotive cooling system testing apparatus allows for the separate testing of the radiator and the engine block cooling passageways, in addition to the testing of the radiator cap and the complete cooling system. The testing apparatus includes a master pressurizing test unit, and adaptors to attach the unit to the various portions of the cooling system. The master pressurization test unit includes a gauge for visually observing the level of pressure, an air inlet for connecting the device to an external source of pressurized air, a manual pressure relief valve for releasing pressure when the testing is finished, and an automatic pressure relief valve for releasing pressure from the portion of the cooling system under test whenever the pressure reaches a predetermined level. The various portions of the master test unit are mounted to an air conduit which is attached to a cap similar to a radiator cap.

Abstract: A sterilization system preferably utilizing two baths in which articles to be sterilized are immersed into a first bath where the articles are conditioned and then into a second bath containing a sterilizing solution where they are sterilized. The ingredients for the sterilization system are stored in hermetically sealed pouches which are opened just prior to use to release and activate the system. The sterilization system utilizes a chlorine solution which is highly efficacious while being non-corrosive and having a reduced toxicity and prolonged shelf life, and may be utilized by relatively untrained personnel.

Abstract: Manipulator for inspecting and, if required, repairing the tubes of heat exchangers, especially for nuclear reactors, in which a tube bundle set in a tube sheet lead into a steam generator chamber and a manipulator is brought in through a lead-in nozzle. An inspection arm can be inserted and removed through the lead-in nozzle and the nozzle can be closed off tight by a blind flange. The inspection arm comprises a guide tube supported in the lead-in nozzle, and a swivel arm supported at the end of the guide tube so that it can rotate in a plane parallel to the tube sheet. The swivel arm carries at its outer end an extendable and retractable mouthpiece carrier with a mouthpiece which can be aligned onto the tube openings. The outer contour of the swivel arm and the mouthpiece carrier in the stretched-out transport position is not greater than the inner contour of the lead-in nozzle.

Abstract: The closure plug assembly is used for pressure testing of fluid drain and vent systems. The assembly comprises an inflatable body portion or bulb connected to a rigid holder portion. The rigid holder portion includes a stem section and a plug section. The stem section is hollow and opens at one end into the inflatable body portion and at the other end receives a valve for pumping fluid pressure into the bulb. A gauge is disposed over the valve end of the rigid stem member to provide a continuous monitoring of the pressure within the bulb.

Abstract: The instant invention relates to a device for testing the end buckling strength of a can body wherein a uniquely disposed compressible ring- or doughnut-like member of appropriate elastic material is adapted to be compressed against the inside surface of a metal or container for the purpose of sealing the interior of the metal can from the atmosphere. The sealed interior of the can is then subjected to appropriate fluid or air pressure to determine the buckling characteristics of the can's closed end structure, after which the can body can be released from the testing device in an improved fashion.

Abstract: A pressure indicator rod is attached to a spring pressed piston mounted upon a cap for a plumbing line. The rod is entirely retracted in the absence of pressure to be protected from impact and to be shielded from vandals. The indicator rod is visible from any angle for ease of reading.

Abstract: A mandrel for hydraulically expanding tubes into engagement with a tubesheet, the body of the mandrel being coated with an electrically isolating impermeable membrane and having an eddy current coil adjacent the leading end thereof, the tube into which the mandrel is placed and the body of the mandrel serving as leads for operating the eddy current coil in order to determine when the leading end of the mandrel is adjacent the inner edge of the tubesheet and a mandrel having a portion formed from wire rope so that the mandrel is flexible and can fit into a tube adjacent a hemispherical head.

Abstract: Apparatus and method are disclosed for externally testing flanged or hubbed connections used on fluid conducting conduits. A ring gasket fits between the faces of the connecting flanges or hubs to effect a fluid tight seal. A test ring also fits between the faces of the hub or flange connection in a manner so as to form a space between the test ring and the ring gasket. Seal means closes the space between the test ring and the faces of the flanges or hubs. The outside diameter of the test ring is confined within fastening means which secures the hubs or flanges together. Fluid under pressure, used to test the effectiveness of the ring gasket seal, is applied to the space between the ring gasket and the test ring seal means. The pressure in that space falls when the ring gasket is defective but remains constant if the ring gasket is sound. Following the test, fluid pressure is bled off the space between the ring gasket and the test ring seal means.

Abstract: A cylinder gripping apparatus having a jaw, a body and a floating interfacing assembly having a curved surface bearing against an opposing surface or groove, the interfacing assembly being operable to generate a proportional gripping force in response to an axial force upon the cylinder to be gripped. The jaw is not connected to the body. The interfacing assembly is operable to permit a transverse displacement of the jaw.