Abstract: A coupling assembly is provided comprising a first member and a second member. The first member includes an exterior surface having one or more engagement features. The second member includes a portion for receiving a portion of the first member having one or more locking features configured to mate with the engagement features of the first member to prevent rotation of the first member relative to the second member while connected thereto. When the first member is securely retained within the second member, the first and second members comprise a coupling assembly suitable for both low-pressure and high-pressure coupling applications. Further, depending upon the circumstances and intended environment, the second member may be configured with features for quick-connect and/or disconnect from a corresponding first member.

Abstract: A fluid coupling including coded and non-coded embodiments and a method for their use. The coded embodiment allows connection of such lines while preventing the inadvertent connection of mismatched lines in a system where there are matched and mismatched delivery and supply lines. Both embodiments of the coupling include axially movable first and second coupling members and a radially operating latch. The coupling members are releasably slideably, axially interfitted with their fluid passageways in communication, and the latch moves radially of the passageways to secure the couplings when they are interfitted. In the coded embodiment, key coding elements on the coded coupling members are movable into matched interengagement when the supply and delivery lines are matched but are precluded from moving into matched interengagement when the lines are mismatched.

Abstract: A pipe and pipe coupling assembly (10) including a pipe (20) having a first end (72) and a pipe (22) having a second end (74). The first end (72) includes a threaded portion (60) and a keyway (32), and is adapted to slidably engage the second end (74). The second end (74) includes a key portion (36) that is adapted to engage the keyway (32), thereby impeding the rotation of the pipe (20) relative to the pipe (22). The pipe and pipe coupling assembly (10) further includes a coupling member (34) adaptable to be rotatably attached to the second end (74). The coupling member (34) further includes a threaded portion (58) operable to engage the threaded portion (60) of the first end (72), thereby removably coupling the pipe (20) to the pipe (22) in a keyed, end to end relationship.

Abstract: A gas supply coupling for a water heater incorporating a shield to close the opening to the combustion chamber. The coupling includes a supply tube, a connector extending through the shield and a gas supply line detachably connected to the connector. The connector is staked to the shield to prevent disassembly requiring that the entire coupling be removed from the combustion chamber prior to disassembly. The gas supply line includes a threaded fastener having a unique exterior configuration requiring a specialized tool for separation from the connector.

Abstract: A submersible well pump assembly using threaded connections, the submersible well pump assembly having a first housing, a second housing, a clamp ring, and at least one anti-rotation member. The first housing has an end having an outer surface, an end face, and a shoulder on that outer surface. The second housing has an end having an outer surface and an end face. The outer surface of the second housing has external threads formed thereon and the end face of the second housing abuts the end face of the first housing. The clamp ring is rotatably and slidably carried on the first housing and has internal threads that engage the external threads of the second housing. The clamp ring also has an internal shoulder that engages the shoulder of the first housing. To keep the connection secure, the assembly has at least one anti-rotation member having a cooperative element on each end of each housing to inhibit rotation of one housing relative to the other.

Abstract: The invention is directed to self-locking coupling devices which are suitable for connecting conduits, pneumatic line segments, hydraulic line segments, fuel line segments or other fluid line segments tubes, ducts, and the like. The self-locking coupling device consists of a first fitting, a second fitting, and a locking sleeve. The first fitting having a first end connect to a first conduit and a second end for receiving a second fitting attached to a second conduit. The first fitting having a coupling portion and a locking portion. The coupling portion formed with an internal thread section. The locking portion having at least one locking tang attached to the coupling portion and extending to the second end of the first fitting. The at least one locking tang formed with an internal locking shoulder projecting radially inwardly at the second end of the first fitting. The second fitting having a first end and a second end.

Abstract: A quick connector (10,12) is to facilitate the connecting of the connecting end of coiled tubing and the connecting end of a tool. For this purpose, the connector comprises two connectable and lockable main parts (10 and 12) formed to be screwed to the end of coiled tubing and the tool, respectively, when the main parts (10 and 12) are in separate positions. A first main part (10) has a freely ending pin element (16) conically narrowing towards said free end, with elongate, axially directed, circumferentially distributed ridges (20) with intermediate grooves (18). A second main part (12) has a pin-element-accommodating bore (22) of complementarily conical shape, defined by corresponding ridges (24) with intermediate grooves (26). At least one set of elongate ridges (24 and/or 20) have rounded top portions.

Abstract: An anti-rotational pipe coupling system is disclosed having pipe segments with end surfaces in which receptacles are arranged at spaced intervals circumferentially around each pipe. Interference bodies in the form of elongated pins are received within the receptacles of one pipe segment and extend outwardly from the end surface to engage complementary receptacles in another pipe segment arranged in facing engagement. The pins bear against the pipe segment sidewalls within the receptacles to prevent relative rotation of the pipe segments about a longitudinal axis coaxial with them. The pipe segments are received within a tube which uses flexible splines engaging concentrically aligned grooves in the tube and the pipe segments to prevent relative axial movement between the segments.

Abstract: A compression fitting for use in, for example, gas turbines includes a sleeve and an integrally formed key disposed partially along the length of the sleeve, a compressor body, a receiver body that threadably engages with the compressor body, and a seal. The seal is compressed against wires or instrumentation lines that pass through the fitting from the interior to the exterior of the gas turbine. The one part construction of the sleeve and key facilitates assembly of the compression fitting into the gas turbine. The key prevents the sleeve from rotating during and after compression of the fitting thereby protecting the wires or instrumentation lines passing through the fitting from being damaged or sheared off.

Abstract: A pipe connection includes a longitudinally extending first pipe portion having an annular first flange at a first distal end of the first pipe and a longitudinally extending second pipe portion having an annular second flange at a second distal end of the second pipe. One of the flanges is a male flange and the other of the flanges is a female flange. The male flange has a ring shaped male wall longitudinally extending from a longitudinally facing flat surface of the male flange. The female flange has a ring shaped female wall longitudinally extending from a longitudinally facing first flat surface of the female flange. The male and female walls are shaped and sized such that the male wall is received within the female wall. A detent is formed from, in, and extending radially away from a first one of the walls toward a second one of the walls. A notch extends radially into the second one of the walls and is sized and shaped to receive the detent therein.

Abstract: A gas valve assembly for use with a gas grill includes a t-shaped manifold with an inlet fluid port that branches out into a pair of valve ports. A pair of gas valves each have an outwardly extending neck that is received within the valve ports of the manifold. A stop means locates the valves a predetermined distance from one another to improve manufacturability. An anti-rotation means minimizes rotation between each valve and the manifold.

Abstract: A medical connector adapted for placement between a catheter and a medical infusion or injection source includes a pair of interlocking half medical connector portions, one side of which attaches to the infusion source and the other side of which is coupled to the catheter connected to the patient. The connection to the catheter and the infusion source can be via standard medical luer taper fittings, with or without specially designed locking mechanisms that prevent inadvertent disconnection. The medical connector itself is uniquely shaped and includes a raised surface feature and a recessed surface feature formed on the medical connector portions.

Abstract: A non-rotational fitting assembly (10; 110; 210) is provided to prevent torsional forces of a nut (12, 112; 212) from being transmitted to a sealing face (16; 26; 246) of a fitting component (12; 22; 248). The assembly (10; 110; 210) includes at least one fitting component (22; 248) having a bearing face (28; 246) aligned orthogonal to the axis of the fitting component (22; 248). The assembly (10; 110; 210) also includes a nut (12; 112; 212) having a bearing face (36; 118) aligned orthogonal to the threads of the nut (26; 112; 212) and dimensioned for engagement with the bearing face (28; 246) of the fitting component (12; 22; 248).

Abstract: To connect piping sections of a pipeline through which a hot and highly compressed medium flows, a number of tension elements are provided. The tension elements extending with their tension shanks in a longitudinal direction of the pipe between shaped elements which are provided at the pipe ends and are adjacent in the circumferential direction of the pipe. Shaped parts are provided at the ends of the tension shank and extend on both sides of the tension element in its transverse direction engaging behind the shaped elements in the circumferential direction of the pipe.

Abstract: Mechanical pipe connections are provided by this invention which include the feature of coupler recesses with discontinuous locking grooves on the pipes. The interlocking system may also include male and female portions which mechanically mesh together to form binding contact between the pipes to reduce the individual rotation of the pipes relative to one another.

Abstract: A hose coupling apparatus for removably coupling a hose to a discharge opening of a spray unit includes an elongate hose retainer having a plug end and a stem end. The hose retainer defines a longitudinal fluid passageway extending therethrough from the plug end to the stem end. The plug end is configured for being received within the discharge opening of the spray unit. The stem end is configured for being coupled to the hose. At least one locking tab is disposed intermediate the plug end and the stem end. Each of the at least one locking tab is configured for being disposed within a corresponding slot defined by a neck which surrounds the discharge opening of the spray unit, thereby precluding rotation of the hose retainer relative to the neck. A hose nut defines a hose bore therethrough. The hose bore is configured for receiving the hose such that the hose nut is slidable over the hose.

Abstract: To connect piping sections of a pipeline through which a hot and highly compressed medium flows, a number of tension elements are provided. The tension elements extending with their tension shanks in a longitudinal direction of the pipe between shaped elements which are provided at the pipe ends and are adjacent in the circumferential direction of the pipe. Shaped parts are provided at the ends of the tension shank and extend on both sides of the tension element in its transverse direction engaging behind the shaped elements in the circumferential direction of the pipe.

Abstract: A seal and method for forming an in-field watertight seal between rigid pipe sections such as concrete pipe sections by applying on the periphery of a pipe section a continuous bead of a non-sagging gel formed from a curable mixture of low viscosity components. A second pipe section is positioned to form a joint with the first pipe section wherein the gap between mating surfaces of the two pipe sections is filled with the mixture which forms a flexible polymeric elastomer seal upon curing. Physical properties of the components and the seal mixture are disclosed.

Abstract: The invention is directed to self-locking coupling devices which are suitable for connecting conduits, pneumatic line segments, hydraulic line segments, fuel line segments or other fluid line segments tubes, ducts, and the like. The self-locking coupling device consists of a first fitting, a second fitting, and a locking sleeve. The first fitting having a first end connect to a first conduit and a second end for receiving a second fitting attached to a second conduit. The first fitting having a coupling portion and a locking portion. The coupling portion formed with an internal thread section. The locking portion having at least one locking tang attached to the coupling portion and extending to the second end of the first fitting. The at least one locking tang formed with an internal locking shoulder projecting radially inwardly at the second end of the first fitting. The second fitting having a first end and a second end.

Abstract: A quick-connect coupling for non-rotatably connecting a hose to a male stem member is made of plastic and includes a plastic fitting body on which is mounted a plastic annular cap having depending lugs. The cap is welded or otherwise fixed to the end of the fitting body. A plastic collet is slid into the annular cap. The collet has depending arms which nest between the lugs on the annular cap so that the collet does not rotate. Detents on the arms seat in a groove on the male stem member to retain the stem member within the fitting body.

Abstract: The present invention relates to safety joints which permit separation of a downhole assembly at the location of the joint. The invention provides a safety joint characterized by the provision of auxiliary interconnecting means on a body (2) for interconnecting said body (2) to an auxiliary shaft after removal of a main shaft (3) from said body (2). Axial loading between the auxiliary shaft and said body (2) may be thereby transferred. Furthermore, torque may also be transferred between the auxiliary shaft and said body (2) in a direction opposite to that in which torque may be transferred from the main shaft (3) to said body (2). Thus, the present invention allows a length of downhole assembly located above said body (2) to be removed from a wellbore by rotation of said length of assembly in a first direction and then allows rotation of said body (2) in the same first direction by means of the auxiliary shaft in an attempt to remove a length of assembly stuck in the wellbore downhole of said body (2).

Abstract: A gas valve assembly for use with a gas grill includes a t-shaped manifold with an inlet fluid port that branches out into a pair of valve ports. A pair of gas valves each have an outwardly extending neck that is received within the valve ports of the manifold. A stop means locates the valves a predetermined distance from one another to improve manufacturability. An anti-rotation means minimizes rotation between each valve and the manifold.

Abstract: An angle setting pipe structure and fabricating method that using a mechanical coupler for connecting two pipe members at a selected axial angle. The pipe members are being made by roll forming at one end to form an annular pipe groove which has a plurality of spaced pipe teeth. The mechanical coupler has clamping flanges to engage with the pipe groove and a plurality of horizontal spaced teeth extending outward from the clamping flanges for engaging with the pipe teeth. The pipe members thus may be securely connected at a selected angle without the risk of angle skewing.

Abstract: A coupling assembly for use in a loading adapter of a gasoline tanker trailer. The coupling includes an aluminum coupling body and a wear resistant bronze sleeve. The wear resistant bronze sleeve provides a durable surface for receiving latches. The sleeve does not bond to the coupling body, but rather is constrained thereto by physical interference.

Abstract: This invention provides a connector for coupling a male and a female component, the connector including a member for locating the female component with respect to the male component and a locking member for coupling the female component to the male component. The locking member rotates with respect to the locating member in order to provide for the coupling and uncoupling of the components.

Abstract: A tubular connection, an example of which is a subsea wellhead having a primary and secondary seal areas allows the use of a backup or contingency gasket for engagement with the secondary seal area in the wellhead should a failure occur in the primary seal area. In the preferred embodiment, the primary and secondary seal areas are sufficiently separated such that the erosion damage which occurs from leakage with the original gasket adjacent the primary seal area, which can spread below the primary seal area, leaves the secondary seal area unaffected. A backup or contingency gasket can be inserted for sealable contact with the secondary sealing area for further well operations.

Abstract: A rotary joint for a heat transfer drum using a stationary syphon pipe system. The syphon pipe is supported on a syphon tube adjustably mounted upon the rotary joint body whereby the distance between the syphon pipe intake and the drum shelf can be very accurately adjusted and maintained. Also, the syphon pipe is mounted upon the syphon tube in a pivotal manner to permit ready installation of the syphon system and employs a locking threaded sleeve arrangement assuring accurate location of the syphon pipe relative to the syphon tube upon the syphon pipe pivoting to its operative position.

Abstract: A gas manifold assembly is disclosed which includes a manifold fitting connected to at least one gas valve. The manifold has an inlet fluid port which branches out into a delivery port. Each delivery port receives a protrusion from each valve which is in turn crimped together to form a collar. A stop offsets the valves from one another to improve manufacturability. One aspect of the invention includes flattening a portion of the protrusion that extends from the valve body in order to engage the fitting which creates an anti-rotation feature once the fitting is crimped. Another aspect of the invention provides seals between the fitting and the valve to increase joint integrity.

Abstract: The invention is directed to a coupling assembly having a male member (1) with a spigot (5) to be received in an opening (21) in a female member (2), and a radially deformable retaining element (3) which is arranged in a recess (22) in the female member (2) and is radially elastically deformable and adapted to be urged into the recess (22) during the coupling operation by a support element (12) disposed on the spigot (5). In the locked position, the spigot (5) is locked against being pulled out of the opening due to the cooperation between the support element (12) and the retaining element (3). To uncouple the coupling assembly, an unlocking element (15) is provided. The support element (15) is releasably connected with the spigot (5) in order to enable assembly of the unlocking element (15).

Abstract: A compression element located inside an enclosed compressor is disclosed for receiving a connection pipe from outside the compressor. The compressor has an opening one in one of its walls. The compression element has a bore running through it. An inlet end of the compression element is joined to the wall of the compressor at the opening. The inlet end of said bore is tapered in the form of a curved shape that spreads smoothly toward the opening. A guide pipe has one of its ends installed into the opening from outside the compressor. A connection pipe having a cooper plated exterior surface is inserted through the guide pipe, press-fitted into the inlet end of the compression element and joined to the compression element. The connection pipe has another end connected to a suction pipe for circulating a refrigerant within the compressor via the compression element.

Abstract: A conduit connection joint is formed to connect a tube (10) and afitting body (12) in fluid tight relation. The joint is made by axially compressing the tube (10) in a bore (14) in the fitting body (12) so as to cause formation of a first bead (52) in a bead formation area. Further axial compression of the tube (10) causes the sequential formation of an additional bead (54) in the bore (14) so as to provide engagement between the tube (10) and the fitting body (12). The engagement of the fitting body (12) and the tube (10) may be further strengthened by axially compressing and radially expanding the beads (52, 54).

Abstract: A gas valve apparatus is configured to receive a gas specific adapter. The apparatus includes a gas valve body having a first end configured to be coupled to a gas connection and a second end. A keyed body is configured to receive the second end of the gas valve body. The keyed body has a first keying mechanism. The apparatus also includes a cap coupled to the keyed body. The cap includes a keyed front face having a gas outlet configured to receive the gas specific adapter. The cap also includes a second keying mechanism configured to mate with the first keying mechanism on the keyed body to permit the cap to be coupled to the keyed body.

Abstract: A connector having a stinger and a receiver. The receiver is cocked by applying counter-acting torques to separate sections of the receiver. The counteracting torques compress a spring member. In the cocked position, the stinger is inserted into the receiver. When the counter-acting torques are released, the spring decompresses and locks the stinger in the receiver.

Abstract: A connector for connecting an assembly to a pipe, which is highly leakproof with respect to the medium to be transported and is secure against separation under axial load. The connector comprises two materials A and B which swell to different degrees. A part comprising the more strongly swelling material A has, at the junction with the material B, a peripheral connecting lip which is substantially enclosed by the less swelling material B, so that a positive connection is achieved.

Abstract: A joint is provided for coupling a pair of elongated members such as a sonde housing and starter rod end to end. Such a joint includes a projection extending in a lengthwise direction from one end of one of the elongated members and a socket in an end of the other of the elongated members, which socket is sized to slidingly receive the projection. A set of alignable transverse openings are provided in the projection and in a wall defining the socket, which openings are configured to receive a removable retainer for mechanically interlocking the projection in the socket. An interlock mechanism, such as a spline and groove connection, prevents relative rotation between the elongated member (e.g., housing and starter rod) when the projection is fully inserted into the socket.

Abstract: A coiled tubing drilling hydraulic disconnect for use in disconnecting a tool from a length of tubing or other tool string. The apparatus has an upper housing and a lower housing with a splined ring threadingly engaged with the lower housing. A spline in the splined ring engages a spline on the upper housing so that torque may be transmitted therebetween. Lugs are disposed through windows in the lower housing below the splines, and a bushing is disposed between the splined ring and the lugs. Relative rotation between the upper and lower housings causes the splined ring to tighten against the bushing and lugs, thereby eliminating play therebetween. A lug prop disposed in the upper housing may be hydraulically actuated so that the lugs may move to a disconnect position, thereby releasing the upper housing from the lower housing. Because the windows are disposed below the splines, no torque or bending are applied to the windows, and the windows and lugs are shaped to minimize stress concentrations.

Abstract: An arrangement for positionally securing a clamp structure on a hose-like member in the partially tightened preassembled condition in which a cut-out is provided in one or on both sides of the clamping band and the hose-like member is provided with knub-like projections of a shape and location complementary to engage in the cut-outs.

Abstract: A counter torque tube connection which couples a first tube and a second tube in turbine engine. The connection first tube includes a male connector component having a ballnose. The ballnose includes a plurality of protrusions. The connection second tube includes a female connector component having a ferrule end fitting sized to receive the ballnose. The female connection component includes a plurality of protrusions that interfit with the ballnose protrusions. The tubes are coupled by extended a nut over the female component and coupling the nut to the male component. The interfitting protrusions prevent torsional loads applied to the tubes from being transmitted to the nut so that the nut remains secured.

Abstract: A flexible coupler apparatus for joining successive exhaust system components in an exhaust system for a vehicle. An inner liner tube is concentrically received by an outer liner tube. A substantially porous, non-sealing, vibration absorbing spacer member is arranged between the liner tubes where they overlap, to preclude direct contact between the liner tubes. The spacer member is non-sealing to preclude deterioration while minimizing interference with the reciprocation and articulation of the liner tubes. A flexible, resilient sealing member, such as a bellows, mechanically and sealingly connects the liner tubes at their distant non-overlapped ends, to prevent escape of exhaust gases. The liner tubes and the spacer member are provided with a non-circular, preferably polygonal or lobed, cross-sectional configurations, for providing protection of the bellows from torsional forces being propagated from one of the exhaust system components, toward the other.

Abstract: An arrangement for connecting two pipe ends comprising a respective closure part around each of the pipe ends. The closure parts are connected together in a bayonet-type connection. One closure part includes an annular surface with a first part parallel to a sealing device placed between the pipe ends and with a second part inclined with respect to the sealing device. The latter part draws the closure parts and the pipe ends together as the closure parts are rotated relatively toward each other and as the one closure part is guided along the inclined portion of the annular surface. A respective sealing surface is provided on each of the pipe end parts. The sealing surfaces are brought axially toward each other by movement together of the closure parts.

Abstract: A swivel seal assembly is defined for providing sealed high pressure fluid communication between relatively rotatable generally coaxial conduits where dynamic runout and static misalignment may occur to one conduit relative to the other. A generally tubular washpipe is mounted in pivotally articulating relation to one conduit, and a generally tubular seal housing is telescoped over the washpipe and mounted in pivotally articulating relation to the other conduit. High pressure, staged rotary seals are supported by the seal housing and maintain bearing and sealing engagement with the washpipe so that the seal housing and washpipe articulate in unison in response to said static misalignment and dynamic runout, thereby virtually eliminating relative lateral motion between the seal housing and washpipe and minimizing rotary seal extrusion damage.

Abstract: A quick-connect coupling for interconnecting only matching fluid delivery and supply lines while preventing the inadvertent connection of mismatched lines where there are matched and mismatched delivery and supply lines. The coupling includes first and second coupling members that are releasably slidably, axially interfitted with their passageways in fluid communication. In the disclosed embodiment of a coupling for use in a chemical extraction system, one coupling member is a male member connected to the supply lines in the typical fifty gallon drum and the other coupling member is a female coupling member connected to the delivery lines. Key coding elements on the coupling members are movable into matched interengagement when the supply and delivery lines are matched but are precluded from moving into matched interengagement when the lines are mismatched.

Abstract: Pipe joint for joining two pipe end sections (1, 1'), the pipes support in their walls one or more bores (7) and/or lines or conduits (8) for hydraulic or electrical energy transfer. The pipe joint comprises a pipe union (3) with internal threads (13, 13'), one section thereof is threaded to the right, and another to the left. These threads correspond respectively with similar external threads (6, 6') at the pipe ends. A joining part (2) is arranged between the two pipe ends, and serves to mutually center and lock the pipe end sections. In the joining part (2) there is arranged joining sleeves (4) for each bore (7) or line (8), to obtain a tight joint between these.

Abstract: A device for the connection of a hydraulic apparatus to an external component, especially for the connection of a hang-held showerhead to a flexible water supply tube. The apparatus includes a tubular part (1) that includes a window (2). The connecting member (4) has means for its connection to the external component and has an outside diameter sized to be inserted in the tubular part (1). The connecting member (4) also includes a packing (9) for establishing a hydraulic seal between the tubular part (1) and the connecting member (4). The connecting member (4) has a recess that corresponds to the window (2) of the tubular part (1) and that at its opening has a dimension that is greater than the corresponding dimension of the window (2). Also included is an adjusting block (12) which fits in the window (2) and the recess (6) for locking the tubular part (1) of the apparatus and the connecting member (4).

Abstract: A junction device for joining a tube (3) to the body of a part (2) including a cylindrical endpiece (1) belonging to the part and defining a end face (6), and a coupling sleeve (11) having a first section (12) including releasable fastener means (13) for co-operating with corresponding means (5) on the coupling endpiece (1) and having a second section (14) axially adjacent to the first section (12) and including means (15) for opposing extraction of an end of the tube (3) placed in the sleeve (11) and in abutment against the end face (6) of the endpiece (1), in which the sleeve (11) is internally fitted with a guide ring (19) for guiding the end of the tube (3), the inside diameter (D) of the ring being substantially equal to the outside diameter of the tube (3), the ring possessing a first portion (20) mounted to slide in the second section (14) of the sleeve (11) and a second portion (21) projecting axially into the first section (12) of the sleeve (11), and the endpiece (1) being provided with a groove (7)

Abstract: The assembly comprises the tank-side connector 1 and the hose-side socket 2 detachably connected with the tank-side connector 1. The tank-side connector 1 is constructed of: a plug 4 in which a liquid-communication valve 5 for providing liquid communication is incorporated; and, a plug guide 3 for receiving the plug 4 therein. The plug guide 3 is provided with an opening portion in its upper surface. A ring 7 is embedded in the opening portion of the plug guide 3, and provided with at least one key projection 8 in a predetermined position. The key projection 8 is so arranged as to correspond to the type of liquid stored in a tank. The socket 2 is provided with an outer sleeve 21 an outer peripheral surface of which is provided with at least one key groove 25 in a position corresponding to that of the key projection 8. The key groove 25 slidably receives the key projection 8 therein in an insertion manner. Preferably, the ring 7 is colored a predetermined color indicating the type of liquid stored in the tank.

Abstract: A motorcycle exhaust system, which can prevent the generation of noise by vibrations and interference of an exhaust pipe heat insulating cover and a muffler heat insulating cover for protecting exhaust pipes and a muffler. Exhaust pipes and a muffler are protected by an exhaust pipe heat insulating cover and a muffler heat insulating cover, and confronting ends of the covers and are joined via an elastic member.

Abstract: A quick release for a vacuum cleaner having a nozzle and a wand for providing suction to the nozzle comprises a tubular connector to be received by the nozzle. A resilient latch on the wand is received in an opening in the tubular connector to secure releasably the wand to the tubular connector. A biased sleeve is movable axially along the tubular connector. The sleeve has a cam surface to urge the latch inwardly to an extent to clear the opening against the bias when the sleeve is moved axially to permit the withdrawal of the wand from the tubular connector.

Abstract: A reverse circulation, pneumatic drilling assembly wherein the bit assembly is operatively connected to a dual wall pipe assembly. A supply of compressed air is conducted through the annulus of the dual wall pipe assembly to a down hole pneumatic hammer. Exhaust air from the down hole hammer is directed to the bit assembly for continuous removal of drilling debris through a central evacuation tube of the dual wall pipe assembly. Sections of the dual wall pipe are joined by hex head couplings which are quickly and easily engaged and disengaged.

Abstract: A thermal isolation coupling system for attaching a high-temperature fluid-bearing tube to an aperture in a housing, in which a separate low temperature flow is established. Locking means attaches the tube end to the housing, in a particular desired position relative to the aperture. A tube support member connects the tube end to the locking means and facilitates positioning of the extreme tip of the tube end in the low temperature flow, in substantially non-heat conducting isolation from the aperture and the housing.