Abstract: A parking pawl assembly having a housing, a parking pawl having a pin bore, a support sleeve fitted in the pin bore, and a pivot pin inserted through the support sleeve. The pivot pin is attached to the housing, thus pivotally attaching the parking pawl to the housing. The parking pawl includes a first end and a second end spaced from the first end. The first end defines the pin bore having an interior bore surface. The support sleeve includes an exterior surface fitted to the interior bore surface of the parking pawl. The exterior surface of the support sleeve may include outer diameter rolled threads or other locking features. The interior bore surface of the parking pawl may include inner diameter rolled threads operable to receive the outer diameter rolled threads of the support sleeve.

Abstract: A threaded connection includes a first tubular member having a pin end defining an external thread profile, and a second tubular member having a box end defining an internal thread profile threadably engageable with the external thread profile of the pin end. At least one of the external and internal thread profiles includes a first section that extends at a first taper angle relative to a longitudinal axis of the threaded connection, a second section extending from the first section at a second taper angle relative to the longitudinal axis, and a third section extending from the second section at a third taper angle relative to the longitudinal axis. The second taper angle is greater than each of the first and third taper angles.

Abstract: A mechanical stepper and method of incrementally actuating a device. An insert is placed within a housing. The housing has a cavity and a stepper sleeve located within the cavity. The stepper sleeve includes a first stop member having an equilibrium position defined by a first equilibrium diameter and a second stop member having an equilibrium position defined by a second equilibrium diameter less than the first equilibrium diameter. The insert including a first protrusion. The insert moves through the housing, and motion of the insert through the housing is incrementally restricted by changing a diameter of the first stop member and a diameter of the second stop member via the first protrusion.

Abstract: A mechanical stepper and method of incrementally actuating a device. An insert is placed within a housing. The housing has a cavity and a stepper sleeve located within the cavity. The stepper sleeve includes a first stop member having an equilibrium position defined by a first equilibrium diameter and a second stop member having an equilibrium position defined by a second equilibrium diameter less than the first equilibrium diameter. The insert including a first protrusion. The insert moves through the housing, and motion of the insert through the housing is incrementally restricted by changing a diameter of the first stop member and a diameter of the second stop member via the first protrusion.

Abstract: An air-guiding structure of a separable hand dryer, the separable hand dryer comprises an air outlet faucet and a working machine connected by the air-guiding structure. The air outlet faucet comprises at least one electrical wire and a ground wire. The air-guiding structure comprises an air pipe and an adapter pipe, and the shape of the air pipe is adjusted by an adjustment manner so that one end of the air pipe is fitted a position of the working machine and the air outlet faucet. The adapter pipe comprises a trunk, a manifold communicating with the trunk and allowing the electrical and ground wires to pass therethrough, and a seal provided in the manifold allows the electrical and ground wires to pass through but to restrict the passage of air. The trunk is connected to the air pipe, and the adapter pipe is adjusted by the adjustment manner.

Abstract: An accessory mount includes a barrel connector and multiple accessory connectors. The barrel connector removably assembles the accessory mount to the barrel of the firearm in axial alignment with the firing axis of the firearm. The accessory mount includes one or more of the accessory connectors to securely and removably assemble accessories to thereto. The accessory connectors include axial alignment features to axially align accessories with the firing axis and/or rotational alignment features to align the accessory alignment with the firing axis. Accessory connectors also include that enable an accessory to be securely assembled to the accessory mount in different rotational orientations.

Abstract: A coupling assembly includes a mechanical attachment to accommodate various diameter fluid passages and resists rotational forces of attaching and detaching a hose from the hose coupler. The mechanical attachment includes a shank having a shoulder defining a space with a conduit of the hose coupling assembly or with a spacer disposed in the conduit. A threaded coupler includes a projecting portion disposed adjacent to the shoulder. The threaded coupler includes a key, or a recess to mate with a key, to substantially prevent rotation of the threaded coupler with respect to the hose coupler.

Abstract: A reinforcing ring and a plastic fitting incorporating such a reinforcing ring are disclosed. The reinforcing ring and plastic fitting have particular utility with respect to fire sprinkler heads in buildings. The reinforcing ring has a single starter thread which is integrally formed with a guide portion which guides a male part to be axially in line with the female fitting.

Abstract: An external brass seal for a floatation device includes a body having an upper portion, a lower portion, at least one aperture, and a seal. The aperture extends through the body and is adapted to transfer fluid into the upper portion and out of the lower portion.

Abstract: An electrical conduit piece of the invention has two external threaded regions, one threaded region having a left hand threaded region and one having a right hand threaded region. This conduit piece is particularly well adapted to be used in conventional conduit systems by coupling two conventional conduit pieces through a coupling of the invention having two internal threaded regions, one threaded region having left hand threads and the other threaded region having right hand threads. A groove may be formed in the internal wall of the coupling, e.g., at or near its longitudinal center to provide an open region in which ends of conduit pieces inserted into the coupling can abut. Residing in the grooved region of the coupling is a locking ring which scores the threads of the conduit pieces at 90° preventing any tangential force from outside of the system from unscrewing one of the conduit pieces from the coupling. In a preferred embodiment, the conduit piece is embodied as a curved or elbow conduit.

Abstract: A reinforcing and a plastic fitting incorporating such a reinforcing ring are disclosed. The reinforcing ring and plastic fitting have particular utility with respect to fire sprinkler heads in buildings. The reinforcing ring has a single starter thread which is integrally formed with a guide portion which guides a male part to be axially in line with the female fitting.

Abstract: In a first aspect, the invention relates to a rock-drilling tool that comprises a drill rod (1;1??) having a male thread (5;5?), and a coupling sleeve (7:7?) having a female thread (15:15?) for the co-operation with the male thread of the drill rod. The male thread (5;5?) of the drill rod (1;1?) may consist of a martensitic, stainless steel. The coupling sleeve consists of hardened low-alloy steel. Axially inside the male thread (5;5?), a waist (32;32?) is formed in which the drill rod (1;1?) has the smallest diameter thereof. The male thread (5;5?) has a wear volume that is larger than the wear volume of the female thread (15; 15?). Furthermore, the invention relates to a drill rod per se as well as a coupling sleeve per se.

Abstract: A reinforcing and a plastic fitting incorporating such a reinforcing ring are disclosed. The reinforcing ring and plastic fitting have particular utility with respect to fire sprinkler heads in buildings. The reinforcing ring has a single starter thread which is integrally formed with a guide portion which guides a male part to be axially in line with the female fitting.

Abstract: A fire sprinkler fitting has a cylindrical body and an insert. The insert has an inner end which is disposed within a proximal portion of the bore, such that the outer end protrudes beyond the open bore end by a distance D. The outer end has internal threads which are sized and dimensioned to accept and retain a fire sprinkler therein. The insert is rotatable within the body without effecting the distance D.

Abstract: A fitting for liquid or steam piping, comprising: an elastic sealing ring; a locating sleeve placed around said sealing ring; an internal teethed lock ring located on the locating ring outer end face; an inner ring located outside of the internal teethed lock ring, the inner surface of the inner ring matching with the outer surface of the pipe to be coupled, the inner ring further including a tapered surface and external threads on the outer surface of the inner ring; an outer ring with threads on its internal surface for matching the external thread on said inner ring, as well as methods for connecting pipes using the fitting.

Abstract: A bulkhead assembly for a pipe-in-pipe system includes coxially inner and outer components which are screwed together along a first threaded portion and a locking device which includes a locking element screwed onto a threaded portion on one of the components having threads running opposite to the threads on the first threaded portion. One of the components further includes a radially extending abutment shoulder at an end of the first threaded portion away from the second threaded portion which abuts against the other component.

Abstract: A pipe fitting has a body with an internally threaded bore and at least one female starter thread. The at least one female starter thread is disposed either within the bore or immediately outside of the bore. The starter thread is axially aligned with the bore threads. The starter thread is made from a material which is stronger than the material from which the bore threads are made. The starter thread most proximate to the threads of the internally threaded bore has a pitch diameter which is at least two percent greater than the pitch diameter of the most proximate thread within the internally threaded bore.

Abstract: Elements for connecting a first end selection (3) of pipe elements to a second end selection (4) of pipe elements, the connecting elements including a sealing joint (20) interposed between the end faces (7, 8) of the first and second end sections and fixing elements (32, 44) which are mounted on the first and second end sections and are coupled to first and second axial abutting elements along the first and second end sections in order to hold the above together and compress the sealing joint between them. The first axial abutting elements include an external shoulder (9) formed on the first section near the end face and the second axial abutting elements include a fixed dowel (50) provided with elements (51)for axial fixing thereof along the second end section.

Abstract: A pipe fitting has a body with an internally threaded bore and at least one female starter thread. The at least one female starter thread is disposed either within the bore or immediately outside of the bore. The starter thread is axially aligned with the bore threads. The starter thread is made from a material which is stronger than the material from which the bore threads are made.

Abstract: A fluid hydrant has an outlet with a threaded outer surface, and a backflow preventor is mounted on the inlet of the hydrant. The backflow preventor has an inlet and outlet end. Male hose threads are formed on the exterior of the outlet end of the backflow preventer. Interior female threads are on the inlet end thereof. A bushing adapter is interposed between the inlet end of the backflow preventor and the threaded nozzle of the hydrant with the threads connecting the adapter and the backflow preventor being of a size different than the threads connecting the adapter and the threaded nozzle of the hydrant. The bushing adapter extends over the threaded outer surface of the outlet of the hydrant, and a locking cement between the threaded outer surface of the outlet of the hydrant and the interior female threads on the inlet end of the bushing adapter rigidly fix these threads together.

Abstract: A screw-threaded connection incorporates multiple synchronized threads, that is, one connection element has a set of external threads that mates with a corresponding set of internal threads on the mating connection element, in customary fashion. The first connection element additionally includes a second set of internal threads synchronized with the first set such that the leads of both sets of threads are the same. This second set of internal threads mates with a corresponding set of external threads on the mating connection element. Of course, the two sets of threads on the mating connection element are synchronized such that their leads are the same, and, of course, the same as first sets of mating multiple synchronized threads. This multiple synchronized thread connection has application to any fluid connector and particularly to fluid connectors in wide-variant temperature deviation, high-pressure, and/or mechanical vibration environments.

Abstract: A screw-threaded connection incorporates multiple synchronized threads, that is, one connection element has one or more sets of male threads that mates with one or more corresponding sets of female threads on the mating connection element, in customary fashion. Of course, the multiple sets of threads on the mating connection element are synchronized such that their leads are the same, and, of course, the same as the sets of mating multiple synchronized threads. This multiple synchronized thread connection has application to any fluid connector and particularly to fluid connectors in wide-variant temperature deviation, high-pressure, and/or mechanical vibration environments.

Abstract: A unitary assembly of tubing and an end fitting. The end fitting includes a threaded fastener fitting having a tubular bore extending therethrough. A conical transition is coaxially provided to the bore at the thread/hex interface where the bore constricts. The end of the tubing is coaxially impacted, expanded and sized to an external configuration and dimension that achieves an interference fit relative to the tubular bore through the end fitting. The non-expanded end of the tubing is inserted into the larger of the two bores in the end fitting passed the conical transition and through the smaller bore until it experiences interference from the expansion. The interference is overcome by pressing the expansion into the bore in the end fitting until the expansion is completely seated into the end fitting. The expanded tube and end fitting is machined coaxially using a five step tool.

Abstract: A screw-threaded connection incorporates dual synchronized threads, that is, one connection element has a set of external male threads that mates with a corresponding set of internal female threads on the mating connection element, in customary fashion. The first connection element additionally includes a second set of internal female threads synchronized with the first set such that the leads of both sets of threads are the same. This second set of internal female threads mates with a corresponding set of external male threads on the mating connection element. Of course, the two sets of threads on the mating connection element are synchronized such that their leads are the same, and, of course, the same as first sets of mating dual synchronized threads. This dual synchronized thread connection has application to any fluid connector and particularly to fluid connectors in wide-variant temperature deviation, high-pressure, and/or mechanical vibration environments.

Abstract: An improved connecting device for of securing a pipe fitting of one material to a pipe of another. This invention provides a connector body with an insert fitting which does not leak therebetween. Further, the invented device has an integral annular flange, which extends into the surrounding body thereby preventing the body from expanding with heat and slipping with relation to the insert upon engaging the fitting with a nipple or other pipe material, and twisting forcefully.

Abstract: A tubular fitting of sheet metal is formed in one piece of a container, for example, a bung container and an internally threaded bushing is press fitted into tubular fitting or is held therein by formations, texturing and/or adhesive and is braced axially against a bead formed on the free end of the tubular fitting.

Abstract: A method of attaching first and second lengths of fiberglass reinforced plastic pipe, the method comprising the steps of winding the first length of pipe around a metal female member, threading a metal male member onto an end of the second length of pipe, and threading the male member into the female member.

Abstract: A stab joint coupling, for joining corrugated pipes, has a male connector and a female connector both having means for attachment to a first and second piece of pipe by engaging the corrugation of the pipe. A circumferential elastomeric sealing means is positioned between the joined coupling connectors to effect a substantial liquid seal for the joint. The coupling permits two pieces of corrugated pipe to be joined relatively inexpensively and quickly by workers in the field.

Abstract: An adapter ring which screws onto a gas tank fill fitting to cover the standard threads on the fitting and provided customized non-standard threads to prevent suppliers without matching fill hose couplings from connecting their supply hose outlet fittings to the fill fittings of tanks which they are not authorized to use. The adapter rings are fastened in place with a thread damaging member which will damage the threads on the fill fitting if there is an attempt to unscrew the adapter ring.

Abstract: A tubular connector joint has a pin member on one of the tubular members and a box member on the other of the tubular members. External pin threads are formed on the exterior of the pin member. Internal box threads have the same pitch as the pin threads. A latch ring locates between the pin threads and box threads. The latch ring contracts and has threads on its inner and outer diameter that mate with the threads of the two tubular members. A drive key causes the latch ring to rotate with the pin member. The latch ring contracts when the upper tubular member stabs into the lower tubular member. A short amount of rotation then causes the drive ring to engage the threads of the lower tubular member.

Abstract: A two or three piece seal apparatus and method is described for providing a positive seal of threads in extreme temperature ranges up to 2000.degree. F. for at least 20 minutes. A stainless steel compression/retaining nut is utilized in combination with a high temperature alloy ring or diamond-shaped seal to effect sealing of the threads.

Abstract: A ratcheting and threaded connector for connecting an upper and lower tubular member which allows an upper member to be connected to a lower member with a ratcheting action and on subsequent rotation causes a threaded spring to move into position to engage shoulders on both the upper and lower members to place them in a rigid and tight relationship. Multiple load bearing shoulders on each of the members coact with load bearing shoulders on the spring to provide a substantially equal balance load distribution and allows the connector spring to have a minimum thickness.

Abstract: A pin and box connection for connecting tubular members together utilizes a split sleeve. The split sleeve is carried on one of the members and has the ability to retract. This allows the members to be snapped together without rotation. The split sleeve is threaded, and the threads ratchet over each other when snapped together. A locking pin is located in one of the members for engaging a longitudinal slot in the other member. The locking member prevents the members from rotating to unscrew once snapped together. The locking pin can be removed to allow the members to be unscrewed from each other.

Abstract: A marine drive (1) for a boat (3) includes a longitudinally extending propeller shaft (18, 20) which concentrically carries the hub (21, 22) of a propeller (10, 11) at the aft end of the shaft, with the shaft serving to rotatably drive the hub. The shaft is provided with a threaded outer peripheral portion (48, 36) at its end. The hub is provided with a rearwardly disposed annular flange (44, 32) and an annular rearwardly facing recess (45, 33) having a threaded outer periphery (47, 35). A dual-threaded nut (49, 37) is removably disposed within the hub recess. The outer nut threads engage the hub threads, while the inner nut threads engage the threads of the propeller shaft. A device (56, 43) is provided for securing the nut against threadable rotation in its mounting. The inventive concepts may be utilized with a single or dual propeller system or any other hub and shaft connection.

Abstract: Provision is made for installation, in the interior of a plastic coupling, of a cylindrical tubular-shaped metal insert with internal threads and having an externally knurled external flange at one end, followed by an intermediate section whereon external teethlike serrations or the like are provided, finally followed by a circumferential recess to house an elastic sealing ring, which insert is installed in the plastic coupling after the latter has been molded, and by embedding through transmission of pressure and heat.

Abstract: A tie-back connector for a subsea well allows the tie-back connection to be made without rotation. A set of threads is located on an inner wall of the outer conduit into which the tie-back connection is to be made. An annular latch is carried by the inner conduit which is being tied back from the surface to the outer conduit. The latch has threads on its exterior which ratchet past the threads on the inner wall as the inner conduit is lowered into the outer conduit. After the threads of the latch are ratcheted fully into alignment with the threads in the outer conduit, the inner conduit is pulled upwardly relative to the latch to secure it in tension. A retainer is actuated when the inner conduit is in the upper position to prevent the inner conduit from moving downwardly again relative to the latch. The inner conduit can be removed by rotation relative to the outer conduit.

Abstract: A tieback connector 10 for connecting tieback conductors 14 between a platform and a casing hanger 22 in a subsea well system 20 comprising a split ring 44 on a connector body member 12 having external threads 32 capable of mating with internal threads 24 on the casing hanger 22 and capable of ratcheting over said internal threads 24 as the connector is stabbed into the casing hanger 22. Rotation of the connector 10 will actuate a locking means 54-66 (and 54A-66A) by the combined action of the threads and relative axial movement of said split ring and body member 12 to thread and lock said connector in said casing hanger. An anti-rotation key 50 permits axial relative movement of the split ring 44 and body 12 but prevents relative rotational movement therebetween.

Abstract: A valve or liquid dispenser which regulates the flow of liquid by means of the movement of its spout, consisting basically of a body of two main parts, one of which is coupled by means of an integrated tube, which may require an adapter, to the liquid outlet, and the other is coupled to the spout or final outlet tube, both parts having ducts or passages for the passage of liquid which, depending on their relative position, allow for the regulation of the desired flow rate, including a mechanism for the adjustment of pressure and for the compensation of wear between said main parts, which prevents leaks and secures the position of the spout or final outlet tube.

Abstract: An adapter for a standard siphon head employed on a threaded neck of a bottle for dispensing carbonated liquids is provided and consists of a collar which has outer threads for installation into the standard siphon head and inner threads for installation onto the threaded neck of the bottle so that the bottle can be emptied of the liquid through the siphon head without further loss of the carbonation. In a modified form the adapter can be designed to be used on various size unthreaded necks of bottles.

Abstract: A system and method for thickening the end of a pipe or rod for receiving tapered threads is disclosed. A metal sleeve is metallurgically bonded to the outer surface of the end portion of a well pipe by a high-energy impact of the sleeve colliding radially inward against the end of the well pipe. The impact is produced by the detonation of an explosive charge propagating uniformly around the sleeve. A castable metal having a substantially lower melting temperature than the melting temperature of the pipe is deposited within the pipe and is permitted to solidify in situ to form a core for absorbing the high-energy impact of the collision and for limiting the radial contraction of the pipe in order to preserve its inside diameter. A thread is machined along a tapered path which penetrates the metallurgically bonded interface of the sleeve and pipe.

Abstract: A conduit coupling assembly for connecting the end portions of a pair of lengths of tubular conduit in coaxial, abutting relationship. Each end portion has external threads of the same size. The coupling assembly includes an abutment ring, locking means, and an outer coupling. The abutment ring has an internal thread sized for threading onto the end portion of one of the lengths of conduit, while the locking means prevents unthreading of the abutment ring once it is installed. The outer coupling has a first end and a second end with a bore extending therebetween sized to slidably, rotatably receive the abutment ring. The inside dimensions of the coupling ends are smaller than an outside dimension of the ring so that the ring is unable to move past the coupling ends.

Abstract: Disclosed is a pipe coupling for coupling a first section of pipe with a second section of pipe. A threaded sleeve comprised of two identical semi-circular connector members is received in an annular recess formed in the exterior surface of the first pipe section. The second pipe section is secured to the first pipe section by means of an internally threaded female coupling nut. Piloting means are provided on the connector members and first pipe section to ensure proper orientation of the connector members with respect to each other.

Abstract: A screw tube assembly is disclosed for use in a screw jack or the like. The screw tube assembly comprises a hollow tube member in one end of which is formed a recess so as to reduce the tube member wall thickness. Into this recess an annular bushing is inserted. A tip portion of the recessed tube wall is crimped over the received bushing outer end to lock the bushing in the tube against axial movement. A chordal portion of the bushing and overlying tube is then displaced radially outwardly to form an external tube assembly key and to lock the bushing in the tube member against rotational motion.

Abstract: A threaded coupling in which the connecting threads are carried on a replaceable sleeve which snap locks onto the end of the primary member such that the thread unit may easily be assembled on or removed from the primary member and replaced when worn or damaged.

Abstract: A threaded interconnect structure incorporating respective matching internal and external threaded portions of members to be threadedly interconnected, with the thread geometry defining a profile having contiguous straight-thread and tapered-thread sections. Sealing integrity and make-up length and sealing predictability of the threaded interconnection are improved over standard tapered-thread joints. Tapered sections have a taper in excess of standard taper-threaded profiles and comprise comparatively fewer threads, with the sealing action in the tapered section being mechanically aided by the straight-thread sections during make-up of the joint, and thereafter mechanically reinforced by the straight-thread sections. A tool chaser of new and novel design permits cutting straight-tapered profile transitions with maintenance of pitch and thread matching.

Abstract: A method for assembling two pipes into a single section of double-walled, radially-spaced, concentric pipe of sufficient strength for use in a wellbore in a permafrost zone in the earth is disclosed. Connectors having both left-hand and right-hand and internal and external threads connect corresponding internal and external threads on the pipe. Marks on the pipe ends indicate the various thread start points and, in combination with the left-hand and right-hand threads, permits proper alignment of the threads and facilitate threaded assembly of the two pipes into the double-walled section of pipe. Standard sizes of pipe may be used.

Abstract: Catalytic converter emptying and filling device attachable to the housing of a catalytic converter containing a bed for storing catalytic pellets. In such a converter the housing is formed of inner and outer walls separated slightly from one another to form a space therebetween which is filled with heat insulating material. The inner and outer walls of the housing each have a port registering with the other port for emptying and filling the bed of the converter. The changer device includes a rigid conduit or pipe connectible to the port for passing the pellets to a receptacle or canister rigidly attached to the pipe for receiving the pellets from the converter and further including a vibrating instrumentality rigidly attached to the device for imparting vibrational turbulence to the rigid assembly making up the device.