Abstract: A ratchet fitting includes a screw portion and an operating portion. One of the screw portion and the operating portion has an engaging member, and the other one of the screw portion and the operating portion has an elastic member and a holding member formed separately from the elastic member. The elastic member and the engaging member are fitted such that a rotational force is transmittable to each other due to engagement of the projection and the protrusion and engagement between the projection and the protrusion is releasable due to deformation of the elastic member. The elastic member has a first fitting portion, the holding member has a second fitting portion, and the holding member and the elastic member are fitted such that the first fitting portion and the second fitting portion are fitted to each other in a rotation direction.

Abstract: A retractable column structure includes an outer tubular member (10), a retaining bracket (20) and an inner tubular member (30). The outer tubular member (10) includes a wall (11) having outer (111), inner (112) and end (113) surfaces. The outer tubular member (10) includes slots (114) extending from the end surface (113) to the inner surface (112). A rear end of each slot (114) includes a protrusion (115) protruding out of the inner surface (112). The retaining bracket (20) includes a frame member (21) abutted against the wall (11) and locking hooks (22) inserted into the inner surface (112) and locked onto each corresponding protrusion (115). The inner tubular member (30) moveably penetrates into the retaining bracket (20) disposed between the tubular members and is concealed inside the outer tubular member (10). Accordingly, excellent support of inner and outer tubular members can be achieved for stable sliding therebetween.

Abstract: The device is a drain pipe coupling to sealably couple an insert pipe with an existing drain pipe, the drain pipe coupling comprises of an elastic tubular body concentrically positioned over the insert pipe and the existing drain pipe; a first and a second retaining rings having a toroid body which is connected to a tightening tool. Turning a screw on tightening tool causes an increase or decrease of diameter of the retaining ring and deforming the elastic tubular body to sealably contact with inner surfaces of the insert pipe and the existing drain pipe.

Abstract: Coupling arrangements and connectors for establishing a substantially fluid-tight removable connection between a fluid port in a medical device such as an endoscope. Various embodiments of the connectors may be coupled to a fluid conduit that may be attached to a decontamination or reprocessing device used to flow fluid through corresponding channels in the medical device during the decontamination process.

Abstract: A pipe may include a pipe body having an axis, an axial bore and a pipe body outer diameter. A male end may be formed on the pipe body. The male end can have an outer diameter consistent with the pipe body outer diameter, and an axial end face. A female end may be formed as an integral bell on the pipe body opposite the male end. The female end may have an inner diameter that is larger than the outer diameter of the male end, a seal recess on an interior thereof, and an interior feature in the interior of the female end that is complementary to the axial end face of the male end. The female end of a first pipe may be configured to receive the male end of a second pipe, such that the interior feature of the first pipe engages and restrains the axial end face of the second pipe. A coupling may be used to join two of the pipes.

Abstract: A pipe coupling structure, configured to prevent formation of a gap between the inner peripheral surfaces of pipe elements connected together through which gap a fluid being transported may enter, includes first and second pipe elements to be connected together. The first pipe element has a first sealing portion with an acute angle defined by a first inner peripheral surface defining a hole of the first pipe element and a first annular surface extending radially outward from an end edge of the first inner peripheral surface. The second pipe element has a second sealing portion defined by a second inner peripheral surface defining a hole of the second pipe element and a second annular surface extending radially outward from an end edge of the second inner peripheral surface. The first and second pipe elements are connected together, with the first and second end edges abutted against each other.

Abstract: An integral hose anti-collapse rib comprises a unitary body having a first cantilevered portion curved in a first direction. This first cantilevered portion defines a first end. A second cantilevered portion is curved in a direction opposite the direction of the first cantilevered portion, in a direction facing the first cantilevered portion. The second cantilevered portion also defines a second end disposed at an opposite extent of the rib from the first end. The hose anti-collapse rib also comprises a locking mechanism that locks the first end of the rib to the second end of the rib, such that the first and second cantilevered portions together form a generally circular shape. Embodiments of locking mechanisms may include a button and orifice locking mechanism and/or a tab and channel locking mechanism. In a relaxed state in which the locking mechanism is not engaged, the rib preferably defines a non-circular, generally spiral shape.

Abstract: A tube connection assembly includes a first connector along a connection axis having a first engagement surface transverse to the connection axis, and a second connector connected to a tube, the second connector having a second engagement surface transverse to the connection axis. The first connector and the second connector are engagable together joining the first and second connectors in a coupled state, the first engagement surface and the second engagement surface spaced a predetermined distance when in the coupled state. A fastener is provided positionable in a locked state and an unlocked state, the fastener in the unlocked state being slidable along the tube, and the fastener in the locked state retaining the first engagement surface and the second engagement surface. The fastener may include a pair of opposing retaining surfaces spaced at least the predetermined distance, at least one of the retaining surfaces having a lead-in.

Abstract: A metal seal ring by which conduits are hermetically engaged by a pressure in accordance with a fluid pressure. The metal seal ring is comprised of a first annular seal surface, a second annular seal surface a pressure receiving surface which is formed between a first and second seal surfaces and which defines an annular recessed portion, and an annular seal portion comprised of a first seal portion and a second seal portion which are both elastically deformable and both formed between the annular recessed portion and the second seal surface. Additionally, an annular seal ring main body is provided on the radially outer side of the seal portion to prevent the first and second flanges from moving closer to the metal seal ring in the axial direction.

Abstract: A representative embodiment is directed to a fitting for fluidically coupling a GC column to another structure. The fitting comprises: a first end configured to receive a ferrule having a tubular element disposed therein, the tubular element being oriented in a first direction; and a second end fluidically connected to the first end and having an opening to provide a fluid from the tubular element in a second direction that is different from the first direction. The second end comprises a substantially planar portion, and the planar portion is configured to make a substantially gas impermeable seal with another element of a GC system.

Abstract: A grooved-ended resilient expansion joint is disclosed. The expansion joint has a resilient expansion member with a central resilient portion and two resilient axially disposed cylindrical ends. Each cylindrical end has a radially outwardly raised distal cylindrical gasket portion with at least one inside shoulder having an inner diameter sized substantially the same as an outer diameter of a pipe to be joined. Each cylindrical end also has a neck portion between the central portion and the gasket portion that is sized to receive a grooved-ended pipe nipple.

Abstract: A hose coupling assembly is described that includes a nipple section for retaining a flexible hose where the hose is crimped between the nipple section and a socket. A tubular sleeve covers a portion of the nipple section known as the nipple extension section and the sleeve is attached to the nipple section so as to cover at least one aperture formed in the nipple section such that the sleeve is forced outward towards the socket when pressurized fluid is introduced into the hose coupling assembly which increases the compression force on the hose.

Abstract: A sealing element that includes a hollow body of metallic material and first and second male sealing members formed at a respective end of the body. The respective male sealing member has an external spherical contact surface designed for mating with a corresponding internal conical contact surface of a female sealing member so as to form a fluid-tight seal between the male sealing member and the female sealing member when their contact surfaces are pressed against each other. Also, a coupling device and a valve device provided with the sealing element.

Abstract: An automated flowback system allows control and operation of the system from a remote location away from the dangers of high-pressure gases or abrasives traveling at high velocities that cause damage or failure to equipment piping valves. The system provides techniques and mechanical components installed in flowlines in any position without having to cut and thread, weld or fabricate pipe to fit. This system includes an expansion coupling with axial adjusting lengths adequate to compensate for variations between two points. The expansion coupling is secured and installed into position eliminating field cut and threading, welding or fabrication. The system also includes a blast barrel with an installed choke nipple, choke bean or choke insert with a chosen orifice size for multiple chambered ports. The blast barrel retracts between two fixed points without having to dismantle any connections or be removed from the fluid flow.

Abstract: A connecting device comprising at least a telescopic connecting system mounted on a carrier housing and capable of being actuated by an actuating mechanism for deployment and connection to a pipe. The telescopic connecting system is connected to a first portion of the actuating mechanism arranged inside the carrier housing and the actuating mechanism comprises a control rod crossing at least one wall of the carrier housing and connecting said first portion to a control system arranged on the outside of the carrier housing.

Abstract: A fluid connection device (1), comprising a tubular shaft (2), the interior of which is divided by a partition (8) into two partial spaces (6,9) separated from each other. A respective side opening (11,12) opens into each of the two partial spaces. The side openings are covered by an elastomeric sleeve (3) so that the side openings are sealed shut as long as no other external forces act on the sleeve. By means of a union nut (4), which is intended to connect the tubular shaft to a container and is screwed onto the fitting thereof, the sleeve is compressed in the axial direction and produces an annular gap that extends across the side openings, by means of which the side openings are flow-connected from then on.

Abstract: An extrusion resistant ring that is radially expandable and contactable to accommodate the relative movement of two joined bodies relative to each other. The extrusion resistant ring in combination with an elastomeric diaphragm provides a high pressure seal for down-hole oil drilling apparatus.

Abstract: The pest control seal for a recreational vehicle (RV) comprises a relatively soft and resilient foam material, which is compressed into the annular opening between the conduit and a passage through the wall or panel of the service compartment of the RV, and a relatively thin, hard retainer, which is attached to the rim or flange of the hose or conduit opening or passage. The foam material and retainer may be attached to each other, or may be installed as separate pieces held in place by compression and suitable fasteners. The retainer may be formed as two semicircular components, or as a single annular piece.

Abstract: A hose coupling assembly is disclosed that includes a nipple section for retaining a flexible hose where the hose is crimped between the nipple section and a socket. A tubular sleeve covers a portion of the nipple section known as the nipple extension section and the sleeve is attached to the nipple section so as to cover at least one aperture formed in the nipple section such that the sleeve is forced outward towards the socket when pressurized fluid is introduced into the hose coupling assembly which increases the compression force on the hose and thereby increases the operational pressure limit of the hose coupling assembly.

Abstract: A pipe connection assembly is disclosed including a cylindrical hub having an interior diameter and a leading end having an exterior beveled surface that defines a leading edge of the hub; and a cylindrical elastomeric sleeve having an inner end that includes a radially inwardly projecting lip having a seat surface inclined to correspond to the beveled surface of the hub so the seat surface engages the beveled surface of the hub. The lip includes an annular stop projecting inwardly and having an interior diameter that is less than the interior diameter of the hub, thereby to define a stop surface that contacts the leading edge of the hub when the hub is inserted into the sleeve. The assembly restricts to a minimal amount the penetration of a hub component of the assembly into the cored hole of the mainline pipe to which the assembly is connected.

Abstract: A composite gland sealing for the interlocking coupling of a housing end piece (8) including an anchoring groove (82), a plastic ring (14) and several locking inserts (20). Each locking insert (20) includes a radially external head (30) provided with a first front projection (50, 52) applicable against the annular front surface (90) of the anchoring groove (82). The head (30) comprises includes a second frontal projection (52, 50) radially shifted from the first front projection (50, 52).

Abstract: A sealing element that includes a hollow body of metallic material and first and second male sealing members formed at a respective end of the body. The respective male sealing member has an external spherical contact surface designed for mating with a corresponding internal conical contact surface of a female sealing member so as to form a fluid-tight seal between the male sealing member and the female sealing member when their contact surfaces are pressed against each other. Also, a coupling device and a valve device provided with the sealing element.

Abstract: An automated flowback system allows control and operation of the system from a remote location away from the dangers of high-pressure gases or abrasives traveling at high velocities that cause damage or failure to equipment piping valves. The system provides techniques and mechanical components installed in flowlines in any position without having to cut and thread, weld or fabricate pipe to fit. This system includes an expansion coupling with axial adjusting lengths adequate to compensate for variations between two points. The expansion coupling is secured and installed into position eliminating field cut and threading, welding or fabrication. The system also includes a blast barrel with an installed choke nipple, choke bean or choke insert with a chosen orifice size for multiple chambered ports. The blast barrel retracts between two fixed points without having to dismantle any connections or be removed from the fluid flow.

Abstract: A fitting and an associated grommet are provided for supporting a conduit penetrating a panel and limiting energy transfer between the conduit and panel. The fitting may include a grommet having annular first and second sections spaced apart from one another and an annular wall extending between the first and second sections such that the wall and first and second sections define a bore. A plurality of ribs protrude from the annular wall, the ribs being distributed circumferentially around the annular wall and spanning between the first and second sections. A tubular liner extends through the bore of the grommet and contacts the first and second sections. The plurality of ribs extend into the bore, and at least some of the ribs contact the liner.

Abstract: Slickline cables and methods for preparing such cables are disclosed. A slickline cable includes a pre-manufactured polymer composite rod having a channel therein; an optical fiber disposed in the channel; a fastener securing the optical fiber in the channel, wherein the fastener is selected from the group comprising a polymer tape, a polymer layer, and a combination thereof, and an outer tube disposed outside the polymer composite rod having the optical fiber therein. A method for manufacturing a slickline cable includes preparing a polymer composite rod having at least one channel therein; placing at least one optical fiber in the at least one channel in the polymer composite rod; securing the at least one optical fiber in the at least one channel using a polymer tape, a polymer layer, or a combination of a polymer tape and a polymer layer; disposing an outer tube over the polymer composite rod.

Abstract: A device for coupling tubular members including a sheet member having a first end and a second end where the first end and the second end are operatively arranged to overlap one another to form a substantially cylindrically shaped coupling, an abutment member mounted to the sheet member proximate the second end thereof, a male threaded member, a female member pivotably mounted proximate the first end of the sheet member and arranged for pivoting rotation about a pivot point, where the female member is arranged to threadably engage the threaded male member, and the male member is operatively arranged to abut the abutment member, wherein the male threaded member is operatively arranged to rotate in a first direction to abut the abutment member and expand the substantially cylindrically shaped coupling.

Abstract: A device for coupling tubular members including a sheet member having a first end and a second end where the first end and the second end are operatively arranged to overlap one another to form a substantially cylindrically shaped coupling, an abutment member mounted to the sheet member proximate the second end thereof, a male threaded member, a female member pivotably mounted proximate the first end of the sheet member and arranged for pivoting rotation about a pivot point, where the female member is arranged to threadably engage the threaded male member, and the male member is operatively arranged to abut the abutment member, wherein the male threaded member is operatively arranged to rotate in a first direction to abut the abutment member and expand the substantially cylindrically shaped coupling.

Abstract: The invention relates to a sealing element (1) with inflatable bellows (10) for sealing piping. Said sealing element can be e.g. cylindrical in shape and said bellows (10) can be provided with two recesses (14a, 14b) containing a gel (11). When the bellows are inflated, the gel (11) encompasses e.g. uneven areas on the inner wall of the piper or cables in the pipe in such a way as to provide a seal.

Abstract: The present invention provides an internal conduit seal for conduits and pipes having an elongated elastomeric seal with first and second seal segments adjacent to the edges of the seal. The sealing segments are made up of a plurality of sealing ribs and restraining members placed externally of the ribs in each segment. The seal includes grooves positioned over each segment for expansion bands used to compress the seal against the inside of a conduit. The invention also includes an expansion band having a radiused contacting surface which in combination with a locking member of the invention positioned between an outer restraining member and an adjacent rib providing substantially improved sealing.

Abstract: A thermowell assembly and method which allows for arresting leakage in the case a thermowell begins to leak in a hydroprocessing process without having to shut down a flow of a hydrocarbon feed stream through a hydroconversion reaction zone in the hydroprocessing process. The thermowell assembly comprises a first hollow sleeve section which supports a thermowell member, a ferrule sealing member which engages the first hollow sleeve section, a second generally cup-shaped second sleeve section wherethrough a thermocouple member slidably passes, and an outer sleeve member for maintaining the union of the first sleeve section, the ferrule sealing member, and the second sleeve section. The method comprises severing and/or removing the thermocouple member from the commenced-leaking thermowell member and placing a high pressure cap over an aperture left vacant by the thermocouple member to seal-off the leaking thermowell member from the atmosphere.

Abstract: According to a further aspect of the present invention there is provided a coupling comprising a male coupler and a female coupler including means for allowing transmission of fluid pressure between the couplers on the mating of the couplers, a first annular seal positioned in a recess in the body of the female coupler to provide a seal between the male and female couplers and extending around the periphery of the male coupler, an outer retainer engageable with the body of the female coupler, and inner retaining means supported by the outer retainer to maintain the first seal in position on withdrawal of the male coupler from the female coupler, the outer retainer accommodating a second annular seal which seals against and around the periphery of the male coupler, and the inner retaining means serving to keep the second seal in position.

Abstract: A fastener assembly is shown including a cylindrical support structure with a bore provided partially therein, the bore having a wall surface with a slot, and a bushing, disposed within the bore of the cylindrical support structure, having an end and an outer surface with a slot therein. The bushing further includes a bore with a first portion having a first diameter and a second portion having a second different diameter, the bushing also having a pair of tangs extending from the end. The fastener assembly further includes a nut, partially disposed within the second portion of the bore of the bushing, the nut having an outer surface with a pair of lugs disposed on the outer surface to engage the pair of tangs of the bushing and a pin disposed juxtapositional the slot of the wall surface of the cylindrical support structure and juxtapositional the slot of the bushing.

Abstract: This invention is directed to an internal expansion coupling system offering improved thrust restraint when joined to a pair of tubular members, preferably plastic, aligned in end-to-end relationship. The system comprises an elongated open ended tubular joint member formed from at least one, relatively rigid, rectangular sheet-like member, where each sheet-like member is defined by a pair of opposing sheet ends and a pair of opposing sheet sides, and a pair of sheet ends overlap such that the end portions thereof lie in close proximity to each other. The joint member is provided with a continuous circumferential gasket sealing sleeve formed of an elastomeric material and overlapping each said sheet side about the open end of the tubular joint member, where said gasket sealing sleeve is adapted to lie adjacent to and be compressed against the inside wall of said tubular member. Further, a member accessible externally thereof, as known in the art, is provided for expanding the tubular joint member.

Abstract: This invention is directed to the combination of a pair of aligned tubular members joined in end-to-end relationship by an internal expansion coupling device, where such coupling device offers thrust restraint to the combination. Each of the tubular members is characterized by the end thereof having one or more circumferentially disposed recesses about its wall. The coupling device, which cooperates with said recesses comprises an elongated open ended tubular joint member formed from at least one relatively rigid, rectangular sheet-like member, where said member is defined by a pair of opposing sheet ends with a pair of opposing sheet sides. The sheet ends thereof overlap such that the end portions lie contiguous with each other.

Abstract: An internal expansion coupling member for use in joining a pair of aligned tubular members in end-to-end relationship, where said tubular members are characterized by an essentially uniform diameter and are adapted to transmit a medium under pressure. The coupling member comprises an internal expansion coupling device formed of an elongated open ended tubular joint member consisting of a relatively rigid sheet-like member, where the sheet ends overlap such that the end portions lie essentially contiguous with each other. Preferably a compressive seal member is provided between the end portions. About the circumference of the joint member, means, such as an annular groove, is provided to position and retain an O-ring type member thereabout. At least one compressible and flexible O-ring type member, formed of a high temperature resistant material, is secured thereabout by said means.

Abstract: The invention relates to a method and apparatus suitable for example in enabling the installation of a casing hanger within a bore in an oil-drilling wellhead in a manner so that the installation and the sealing-in of the casing hanger is accomplished in a single operation. The invention thus comprises installing a component (2) within a bore (4) so as to be received therewithin in a fluid-type manner utilizing expandible seals (8) and a shoulder (36) within the bore (4) adapted to be contacted by a leading edge (32) of one of two concentrically arranged sleeve members (12, 14) which are driven downwardly within the bore towards the shoulder, the two sleeve members which encircle the component (2) being secured together by shearable links (25).

Abstract: The combination of a pair of aligned tubular membes joined together in end-to-end relationship, where the tubular members are joined by an internal expansion coupling device. The combination is designed for applications exposed to high operating temperatures and pressures. The combination comprises a tubular member characterized by a flared end portion having a diameter exceeding the diameter of the tubular members. Additionally, there is provided an internal expansion coupling device formed of an elongated open ended tubular joint member consisting of a relatively rigid sheet-like member, where the sheet ends overlap such that the end portions lie essentially contiguous with each other. A compressive seal member is provided between said end portions, and a flexible O-ring type member formed of a high temperature resistant material, is disposed within said flared end portion in contact with the relatively rigid sheet-like member.

Abstract: This invention relates to an internal expansion coupling, having particular utility in joining together two tubular members or pipes aligned in end-to-end relationship. The device hereof comprises(a) an elongated open ended tubular joint member formed of a relatively rigid sheet-like member, where the sheet ends overlap such that the end portions lie contiguous with each other;(b) a continuous sleeve formed of an elastomeric material and overlapping the sheet side about at least one open end of said tubular joint member, where said sleeve, about the circumference thereof, is provided with at least one continuous upstanding rib which is adapted to lie adjacent to and be compressed against the inside wall of a tubular member; and(c) means for expanding said sheet-like member whereby said sheet ends move circumferentially towards one another urging said elastomeric sleeve and said rib against the inside wall of a tubular member.

Abstract: A space vehicle booster has a lower section and an upper section forming a joint with a seal assembly enclosing a closed cavity. The seal assembly has an upper flange joined to the upper section, and has a lower flange joined to the lower section, and has a collar disposed between the flanges. The flanges are joined by bolts, which slightly compress the collar. The collar has a blind slot, which opens into the closed cavity and which separates an upper collar portion from a lower collar portion. The pressurized gas in the closed cavity urges the upper collar portion against the upper flange and urges the lower collar portion against the lower flange. The collar has an inner pair of "O" rings and an outer pair of "O" rings. Upper and lower chambers are disposed between the "O" rings. A passageway to the chambers has an exterior opening for evacuating the chambers for testing the integrity of the seals prior to launch.

Abstract: A zero-leak cryogenic coupling includes a polymeric seal clamped to a male bayonet member with two pairs of tightening rings. The tightening rings threadably engage each other in respective pairs around tapered ends of the inflatable seal member so that a wedging action tightens the seal member about the male bayonet. Once in place, the seal may be inflated via an inflation port so that its expansion provides a pressure contact with the inside surface of a coaxial female member.

Abstract: A engageable joint having male pipe end and a female pipe end. The male and female pipe ends are removably engaged with gaskets. The gaskets are inflatable and arranged in a plurality of stages in the axial direction to inflatably seal a clearance between the pipe ends, and the joint has a clamp device for clamping the two pipe ends so that the pipe ends can be engaged and disengaged readily and reliably.

Abstract: A dish washing aid device for segregating soapy dish water in a single basin kitchen sink, the device comprising a lower base portion adapted to seal with the bottom wall of the basin about a drain therein, the base portion having a water tight vertically adjustable swivel connection with an upper funnel-like portion serving as a diverter for rinse water and being adapted to be rotated to a position under the sink faucet so that the rinse water may be poured onto cleaned articles to rinse away the soapy water and diverted into the drain without diluting or draining the soapy water in which the remaining articles are soaking.

Abstract: The invention relates to a cuff for sealing joints of pipes, adhering inside at the two ends of pipes by a plurality of annular ribs formed in one piece with the rest of the cuff, made of elastic material and which is being pressed outwardly by expanding collars on its inner side in the region of the annular ribs. The invention is to be seen therein that in the unloaded state the profile of the annular ribs (1) forms in cross-section two curvatures (1a, 1b) towards the pipe wall. Thus it is achieved that the cuff retains its required position after it has been inserted into the pipe ends and being pressed slightly against the wall ends. Furthermore, a good sealing effect is being achieved by the new configuration of the annular ribs.

Abstract: A liquid chromatographic analytical column includes an end cap that is abutted with an end edge of a holder body when the analytical column is fully inserted into a bore in the holder body. An end cap mounted to a precolumn is compressed between the end cap of the analytical column and an end nut connected to a holder union. The holder union has a central passage that admits the precolumn therethrough and a stop that engages a ferrule placed around the precolumn to compress the ferrule against the analytical column end cap to form a seal.

Abstract: A separable electrical isolator for coupling two pieces of conductive tubing carrying high pressure cryogenic gas includes a gas-impervious dielectric spacer with a bore in which the pieces of tubing are sealed axially-aligned in fluid communication with an electrically-nonconductive gap between them. A pair of complementary coupling members are rigidly attached to the pieces of tubing to define outwardly-extending annular flanges that are each sealed about the periphery of a corresponding one of the pieces in a position slightly set back from an end of the piece. Each flange has an annular rib protruding from it toward the end of the piece. The coupling members are separably and nonconductively interconnected with the annular ribs applying compressive force to the spacer to thereby effect the seal.

Abstract: The sealing assembly includes a relatively soft rubber, tubular sleeve having an axial length sufficient to span the joint between hollow members, such as the corbel joint between a manhole frame and a manhole casing, and a sealing portion in each of the opposite ends. The outer surface of each sealing portion is compressed radially outwardly in sealing engagement with the interior walls of the manhole frame and the manhole casing by a generally circular hoop which fits into a groove provided in the inside surface of the sleeve. Each hoop has circumferentially movable, end portions and a radially inwardly extending bracket mounted on each end portion at circumferentially spaced locations. These brackets are adjustably pulled toward each other, to increase the circumference of the hoop, by tightening a nut threaded onto the outer end of a bolt connecting the brackets together.

Abstract: An internal seal is disclosed between a manhole casting and mating manhole components such as concrete adjusting rings, the concrete manhole cone, or masonry structure of a similar configuration, to prevent water infiltration at this interface. The seal is formed by a continuous elastomeric ring. The ring is held in place by two stainless steel retaining bands. The elastomeric ring is pleated to allow an upward movement or lateral movement of the casting without impairing the sealing ability of the ring. The gasket can be installed either during construction or at any time after construction that there is found to be a problem with infiltration.

Abstract: A coupling for high pressure liquid chromatographic columns of any length, individually, or by union of two columns together, in which an end fitting carries a secondary seal together with internal means for retaining the seal in place. The end fitting is designed as a unitary assembly wherein the secondary seal is secured into the end fitting as a unitary assembly of parts without the use of screw threaded members. A special screw and nut configuration of end fittings permits the same design to be used for columns of extremely short lengths.

Abstract: A packer member including a plurality of corrugated rings, particularly for sealing the annular clearance between the casing and tubing of an oil well. The packer is carried upon a collar presented by a member coupled into the tubing, and axial compression of the packer flattens the corrugations, expanding the rings radially so that such tightly fit with the inner wall of the casing by either penetrating it or being distorted against the inner wall, and at the same time the axial compression makes a tight fit between the inner edges of the rings and the collar on which they are supported. The packer may include a stack of corrugated rings alternately positioned with rings of harder and softer materials, and occasional robust rings may add stability.

Abstract: This device comprises a cylindrical member integrally made of an elastic material for covering the inside periphery of a pipe joint, belt members impregnated with a bonding agent to be squeezed out by pressure, and circular expanding members for expanding said cylindrical member when positioned inside the cylindrical member and subsequently expanded.