Abstract: A coupling for swivably coupling an arm to a post, the coupling in use cooperating with the post as an engaged element via a post interface, and with the arm as an engaged element via an arm interface, wherein the coupling including its interfaces provides limited relative rotational movement between the arm and the post about a swivel axis extending along a longitudinal axis of the post, wherein the limited rotational movement is provided in a rotational zone that corresponds to a single revolution about the longitudinal axis. The disclosure further relates to a coupling system, and to a monitor support.

Abstract: Provided is an optical information reading device that can reduce an installation load on a user, and can accurately read a code provided to each of various workpieces. A polarized illumination light source includes light emitters that irradiate the workpiece with illumination light through a polarization filter. A non-polarized illumination light source includes light emitters that irradiate the workpiece with illumination light without through a polarization filter. An imaging element is provided with a polarization filter having a polarization direction different from a polarization direction of the polarization filter of the light emitters. Either of the polarized illumination light source and the non-polarized illumination light source is used in accordance with the workpiece.

Abstract: A male coupling for attaching to a female coupling in which rotation of the male coupling with respect to the female coupling is limited.

Abstract: A swivel fitting used to connect to various components in a fluid handling system is provided. The swivel fitting incorporates an annular chamfer surface to reduce the affect that the fitting has on the flow properties of the fluid when the fluid is caused to flow through the fitting. The use of the swivel fitting in a paint supply line is also described.

Abstract: Disclosed is a gas release device that is adapted to be secured to an inflatable article. The device includes an container, which can be a commercially available gas bottle, a salinity sensor, and an end cap. The salinity sensor operates an electrically fireable primer that serves to release an inflation gas from the container and inflate the article. The end cap includes a cylindrical through hole that accepts a rotatable D-ring. The D-ring is dimensioned to fit over the valve of the inflatable article. The D-ring includes a series of peripheral apertures that can be selectively aligned with a slot to create a fluid passage between the container and valve. The D-ring allows the device to be rotated between different angular positions while maintaining a pneumatic coupling between to the inflatable article and the container.

Abstract: A swivel fitting used to connect to various components in a fluid handling system is provided. The swivel fitting incorporates an annular chamfer surface to reduce the affect that the fitting has on the flow properties of the fluid when the fluid is caused to flow through the fitting. The use of the swivel fitting in a paint supply line is also described.

Abstract: A safety breakaway connector has a male fitting and a female fitting inserted into one another. The female fitting includes a swivel that rotates about an angle to a breakaway portion of the invention. The swivel has a female portion connected to the breakaway portion and a male portion that pivotally connects to a nozzle. The male portion has an axis spaced apart from the axis of the breakaway portion. The male portion rotates or pivots about the female portion subject to a biased cam. The biased cam has a ball bearing that travels within a race formed in the male swivel. The biased cam provides an offset to the connector so that a fuel line in communication therewith avoids an orientation perpendicular to the direction of travel of a vehicle. The breakaway portion then detaches the fuel line cleanly from the swivel that remains with the fuel nozzle.

Abstract: A rotary joint having a stationary section (60) having a fluid path (6) in which sealed fluid flows; a sleeve (30) having in it a second connection fluid path (6C) in which the fluid from the fluid path flows, rotatable relative to the stationary section, and made of a rustless material; a rotary seal ring (2) having a first connection fluid path (6B) that has an inner peripheral surface fitting on the outer peripheral surface of the sleeve so as to be connectable to the second connection fluid path, having a first seal surface (2A) on one side face of the rotary seal ring (2), and having a second seal surface (2B) on the other side face of the rotary seal ring (2); a first stationary seal ring (10) having a first relative seal surface (10S) in intimate contact with the first seal surface; and a second stationary seal ring (11) having a second relative seal surface (11S) in intimate contact with the second seal surface and enabling the fluid path and the first connection fluid path to be connection to a space

Abstract: A coupling that can be easily and repeatedly rotationally adjusted after assembly and/or installation. The coupling can comprise a male part insertable into a female part to a first position whereat the male part is rotationally locked with respect to the female part. Upon further insertion of the male part into the female part to a second position, the male part is rotationally unlocked from the female part and the male part then can be rotated relative to the female part. Once rotational adjustment is complete, the male part can be returned to the locked position to rotationally lock the coupling.

Abstract: An spray head includes a spray engine and a metal shell retained on the spray engine. The spray head is assembled by fitting the shell onto the spray engine and seating the shell against a cushioning ring. A retaining device is attached to the spray engine to secure the shell is position. A surface finish is applied to the outer surface of the shell to achieve a desired appearance.

Abstract: A siphon elbow for pivotally connecting separate horizontal and vertical siphon pipes in fluid communication, comprising a horizontal body and a pivot body. The horizontal body has a first, longitudinally-extending passageway defined therethrough between opposite first and second open ends, the first open end connectable to an end of a horizontal siphon pipe. A second passageway is defined transversely through the horizontal body and intersects the first passageway. The second passageway is at least partially defined by opposite openings in the horizontal body. The pivot body has a passageway defined transversely therethrough between first and second open ends, the second open end being connectable to an end of a vertical siphon pipe.

Abstract: A pressurized fluid delivery apparatus, such as a pressure washer or sprayer, includes a pump for providing a pressurized fluid, a conduit fluidly connected with the pump to receive the pressurized fluid, a fluid accessory fluidly connected with the conduit to receive the pressurized fluid from the conduit, and a quick-disconnect assembly selectively fluidly connecting the fluid accessory and the conduit. The quick-disconnect assembly includes a male fitting coupled to one of the fluid accessory and the conduit. The male fitting includes a male component and a non-circular outer surface. The quick-disconnect assembly also includes a female fitting coupled to the other of the fluid accessory and the conduit. The female fitting includes a female component having an opening for receiving the male component and a non-circular inner surface coupled to the non-circular outer surface to prevent rotation between the male fitting and the female fitting.

Abstract: A coupling that can be easily and repeatedly rotationally adjusted after assembly and/or installation. The coupling can comprise a male part insertable into a female part to a first position whereat the male part is rotationally locked with respect to the female part. Upon further insertion of the male part into the female part to a second position, the male part is rotationally unlocked from the female part and the male part then can be rotated relative to the female part. Once rotational adjustment is complete, the male part can be returned to the locked position to rotationally lock the coupling.

Abstract: A banjo fitting is disclosed comprising a block, a stud, a saddle washer pair and a cap. The saddle washer pair is bent so as to partially surround and clip onto the block. In this manner the block and washer pair form a single unit to simplify installation of the banjo fitting. The block further includes a pair of walls that extend from opposite faces of the block and engage the stud so as to provide a clocking feature. In this manner, the stud and the block remain properly aligned even as the cap is tightened on the stud to secure the block.

Abstract: A pressurized fluid delivery apparatus such as a pressure washer or sprayer including a pump adapted to provide a pressurized fluid, a conduct fluidly connected with the pump to receive the pressurized fluid from the pump, a fluid accessory fluidly connected with the conduit to receive the pressurized fluid from the conduit, and a quick-disconnect assembly selectively fluidly connecting the fluid accessory and the conduit. The quick-disconnect assembly includes a male fitting coupled to one of the fluid accessory and the conduit. The male fitting includes a male component and a first non-circular surface. The quick-disconnect assembly also includes a female fitting coupled to the other of the fluid accessory and the conduit. The female fitting includes a female component having an opening for receiving the male component and a second non-circuit surface coupled to the first non-circular surface to prevent rotation between the male fitting and the female fitting.

Abstract: Rod linkage for rod segments for a horizontal earth drill, whereby the rod segment ends can be interconnected by displacing the rod segment axes in parallel. The invention relates to a rod linkage for horizontal earth drilling which is characterized in that the ends of the rod segments can be interconnected by displacing the rod segment axes in parallel.

Abstract: A joint for piping includes a pipe with an annular swelling wall and a connector body with a socket that includes locking pieces. The locking pieces hold the annular swelling wall when the pipe is inserted through the connector body to connector the pipe to the connector body. A projected member on the pipe fits in a recess on the connector body to prevent rotation between the pipe and the connector body.

Abstract: Connector tubing is provided by a pair of nested corrugated spiral flex tubes twistable relative to each other about an axis at a flex tube joint to provide torsion relief.

Abstract: A joint for piping includes a pipe with an annular swelling wall and a connector body with a socket that includes locking pieces. The locking pieces hold the annular swelling wall when the pipe is inserted through the connector body to connector the pipe to the connector body. A projected member on the pipe fits in a recess on the connector body to prevent rotation between the pipe and the connector body.

Abstract: An extension tube in a vacuum cleaner includes a lower extension tube for drawing dust laden air through an air suction nozzle fitted at one end, an upper extension tube having one end connected to a hand grip extended to a body of the vacuum cleaner for passing the dust laden air drawn through the lower extension tube, a joint part connected to the other ends of the lower extension tube and the upper extension tube for making the lower extension tube and the upper extension tube foldable relative to each other to a preset angle, and a locking arrangement for locking the joint part to fold/unfold the joint part selectively, thereby permitting a user to fold the upper and lower extension tubes, and to carry out an easy cleaning of even an underside of a sofa or a bed without bending the user's body, thereby enhancing the user's convenience.

Abstract: A quick connect and disconnect coupling which does not allow free rotation of the ends of the coupling with respect to one another includes a male connector having a coupling end and a female connector having a coupling end with a receiving opening therein to receive the coupling end of the male connector when the connectors are in coupled condition. A holding mechanism is associated with the connectors to hold them together in coupled condition and allow easy disconnection when desired. Interengaging cooperable surfaces are provided on the male and female connectors, such as tabs extending from the female connector to engage a flat or other tab mating surface on the male connector to substantially prevent relative rotation of the male connector in relation to the female connector. The coupling is particularly useful for attaching sprinkler heads to sprinkler head holding bases in sprinkler systems to allow easy replacement of the sprinkler heads.

Abstract: A lightweight detachable air coupler for an air seeder comprises an aluminum frame having two steel sleeves die cast into the frame. The frame is provided with two circular apertures each being defined by a rim having an internal cylindrical surface. The steel cylindrical sleeve has a first end having an exterior surface that is diagonally knurled. Two steel sleeves are mounted in the mold for the aluminum frame and cast aluminum is injected into the mold. The liquid aluminum adheres to the knurled exterior surface of the steel sleeves. The aluminum frame has a front surface from which the rims project and a rear surface from which the sleeves project.

Abstract: A universal accumulator device for an auto air conditioning system includes a housing having an inlet opening, one or more outlet openings, one or more inlet fittings selectively engaged with the inlet opening of the housing, and one or more outlet fittings selectively engaged with the outlet opening of the housing. The inlet and outlet fittings may include a metric or a British thread for coupling to the metric or British pipings or lock nuts. A tubing may be selectively secured to the fittings with one or more sealing rings and with an additional barrel.

Abstract: A water spray pistol includes a barrel, an elbow pipe fastened to the barrel, a pivoting seat fastened to the elbow pipe, and a nozzle head fastened to the pivoting seat. The pivoting seat is provided with a pivoting shaft and a locating pin. The nozzle head has a pivoting portion which is provided with a series of locating slots and an angle scale. The pivoting portion of the nozzle head is pivotally mounted on the pivoting shaft. As the pivoting portion makes a turn on the pivoting shaft, the locating pin of the pivoting seat is retained in one of the locating slots of the pivoting portion of the nozzle head, so as to locate securely the nozzle head. The angular adjustment of the nozzle head is measured by the angle scale of the pivoting portion.

Abstract: A quick connect and disconnect coupling which does not allow free rotation of the ends of the coupling with respect to one another includes a male connector having a coupling end and a female connector having a coupling end with a receiving opening therein to receive the coupling end of the male connector when the connectors are in coupled condition. A holding mechanism is associated with the connectors to hold them together in coupled condition and allow easy disconnection when desired. Interengaging cooperable surfaces are provided on the male and female connectors, such as tabs extending from the female connector to engage a flat or other tab mating surface on the male connector to substantially prevent relative rotation of the male connector in relation to the female connector. The coupling is particularly useful for attaching sprinkler heads to sprinkler head holding bases in sprinkler systems to allow easy replacement of the sprinkler heads.

Abstract: A connector assembly 10 for use with tubular conduits 30 is disclosed which is a male portion that is put into a female portion. The male portion makes use of the end of the conduit itself, and the female portion only requires a stepped bore. The seal 50, stabilizing bushings areas 34 and retainer 138 are carried on the male portion. The seal 50 may be retained on the male, and the connection may be either a quick connect or require a tool to assemble. The connection may seal the highest pressures and withstand very high forces on the male and female portions. Also disclosed is the use of this connection in a multiple port device. The connection may be completed in the depth and diameter that is allotted to a "thread-in" or "flare" connection.

Abstract: A swivel coupling for high pressure fluid of the type providing an axle through which fluid can pass to a rotary connector. The swivel coupling includes first and second mechanical bearings spaced apart and mounted along the axle, wherein each mechanical bearing has an inner and an outer bearing member. The inner bearing members are attached to the axle while a mounting member attaches to the outer bearings so that the bearings provide radial and axial support between the axle and the mounting member while allowing relative rotation between them. A fluid opening on the axle between the mechanical bearings communicates with the rotary connector. The rotary connector is supported by a pair of swivel bushings wherein each swivel bushing is mounted on an opposing end of the rotary connector for locating it between the mechanical bearings. High pressure seals are fitted into upper and lower annular recesses located on the axle in respective positions above and below the fluid opening for sealing the connector.

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 rotary joint for establishing fluid tight communication between a rotating drum and a heating or cooling medium such as steam or water wherein the joint includes a normally stationary body connected to supply or discharge conduits, and the body includes a rotating nipple coaxially threaded into the end of the drum. For ease of installation, maintenance and removal, the normally relatively rotatable body and nipple are selectively locked together to prevent relative rotation permitting rotation of the body to thread or unthread the nipple relative to the drum journal.

Abstract: A connector assembly 10 for use with tubular conduits 30 is disclosed which is a male portion that is put into a female portion. The male portion makes use of the end of the conduit itself, and the female portion only requires a stepped bore. The seal 50, stabilizing bushings areas 34 and retainer 138 are carried on the male portion. The seal 50 may be retained on the male, and the connection may be either a quick connect or require a tool to assemble. The connection may seal the highest pressures and withstand very high forces on the male and female portions. Also disclosed is the use of this connection in a multiple port device. The connection may be completed in the depth and diameter that is allotted to a "thread-in" or "flare" connection.

Abstract: A rotation joint which is adapted for connecting a steamer arm to a facial steamer machine includes a clamping mount affixed to the facial steamer machine, an arm head which is affixed to the steamer arm having a head sleeve rotatably mounted in the clamping mount, a stopper device for limiting the rotation angle of the steamer arm, and a locking means for fastening the steamer arm to a desired inclined angle. The rotation joint limits the adjustable rotation angle of the facial steamer arm to less than 180 degree, so that the steamer arm is blocked to avoid positioning horizontally. In other words, in all situation during operation, the steamer arm extends upwards to prevent any hot water from dropping down to the patient body. Besides, the rotation joint also enables the steamer arm to be adjusted to a hang down position so as to save the storage space when it is not in use.

Abstract: A locking mechanism for male and female coupling members for use in undersea production and drilling applications is disclosed. At least one pin extends radially from the female member. Each pin enters a slot in a guide sleeve extending longitudinally from the male member. The guide sleeve also contains a spring and spring plate. The female member is inserted into the guide sleeve, compressing the spring, and the pin enters the first longitudinal portion of the slot. The female member may be rotated with respect to the male member when the pin is in the circumferential portion of the slot. The pin then may enter the second or third longitudinal portion of the slot. When the pin is in the second portion of the slot, the female member is "parked" or secured to the male member while coupling member valves remain closed, and when the pin is in the third portion of the slot, the valves are open.

Abstract: A moveable swivel joint assembly for joining a pair of pipes. A male body member includes a first open end attachable to one of the pipes and a second end having external threads, with a recess in the second end on each side of the external threads. A female body member includes a first open end attachable to the other pipe and a second end having internal threads which mate with the male body member external threads. A pair of o-ring seals are provided, one o-ring seal residing in each recess in order to provide an internal and external seal for the swivel joint assembly while allowing rotation of the body members with each other.

Abstract: A connector assembly 10 for use with tubular conduits 30 is disclosed which is a male portion that is put into a female portion. The male portion makes use of the end of the conduit itself, and the female portion only requires a stepped bore. The seal 50, stabilizing bushings areas 34 and retainer 138 are carried on the male portion. The seal 50 may be retained on the male, and the connection may be either a quick connect or require a tool to assemble. The connection may seal the highest pressures and withstand very high forces on the male and female portions. Also disclosed is the use of this connection in a multiple port device. The connection may be completed in the depth and diameter that is allotted to a "thread-in" or "flare" connection.

Abstract: A low profile swivel coupling having a main body with a hollow cylindrical bearing surface, a front swivel member internally threaded to be screwed onto a threaded bearing seated on the bearing surface and rotatable on it whereby the front swivel member rotates about bearing surface of the main body.

Abstract: A spout mounting assembly which includes a centerbody having an annular groove, a spout having two slots extending through its wall fitted rotatably over said centerbody with said slots aligned with said annular groove, a retaining ring having radially inwardly extending lugs which extend through the slots and are positioned within the annular groove thereby preventing axial movement of the spout relative to the centerbody, and a bonnet slidably disposed over the retaining ring to keep the ring in position.

Abstract: A spout mounting assembly which includes a centerbody having an annular groove, a spout having two slots extending through its wall fitted rotatably over said centerbody with said slots aligned with said annular groove, a retaining ring having radially inwardly extending lugs which extend through the slots and are positioned within the annular groove thereby preventing axial movement of the spout relative to the centerbody, and a bonnet slidably disposed over the retaining ring to keep the ring in position.

Abstract: A twist canister for conducting conduits between two members rotatable with respect to each other through a predetermined angle about an axis. The conduits are pre-flexed an angular amount equal to one half of the predetermined angle when the members are at the extreme of the rotational angle with respect to each other. The conduits are flexed only one half of the predetermined angle during rotation of the members through the total predetermined angle. The conduits are placed generally in a plane parallel to the axis to minimize the space required for the canister.

Abstract: A limited rotation ball-joint conduit apparatus for the adjustable mounting and electrical connection of an electrical fixture to a fixed service mount. The ball member of the present invention has a flat surface. The socket member of the present invention has an indexing pin extending into the socket above the flat surface of the ball member. The indexing pin is located so that the indexing pin engages only upon a point along a periphery of the flat surface of the ball member when the spherical flange is rotated; thus preventing further rotation in that direction.

Abstract: A swivel spout sub-assembly is disclosed for use on water faucets with the swivel spout sub-assembly being of simplified configuration to provide facile assembly and disasembly thereof. The swivel spout sub-assembly includes a water output nipple on the faucet and a swivel spout structure including a shroud body having an axial bore in which the nipple is coaxially disposed. The shroud body and the nipple are especially configured to interact with each other to provide a means for assembling the spout structure on the nipple, allow the spout structure to be moved in a swivel motion about the nipple and prevent unintentional removal of the spout structure from the nipple.

Abstract: A device, such as a flashlight, spotlight, or reading light, for emitting an incident beam of light wherein the intensity and color of an incident beam of light emitted from the device can be manually modulated or adjusted. The device utilizes a variable density filter system which is manually adjustable and which incorporates a pair of optical linear polarizing filters or lenses which are mounted so that the emitted beam of light must pass through the polarizing filters. The filter system is adapted to produce at one extreme a high transmittance value when the axes of the polarizing filters are parallel. At the opposite extreme a very high extinction density is achieved when the axes of the polarizing filters are oriented so as to be essentially normal or perpendicular with each other. Varying optical densities are produced at settings between these two extremes.

Abstract: An unrestricted, leakproof, rotatable fluid flow joint comprising: a flexible rod mechanism, a first elbow, a second elbow, and a resilient O-ring; the first elbow including a mechanism for rotatably receiving the second elbow, a mechanism for rotatably connecting the elbows with the flexible rod mechanism, and a mechanism for guiding the flexible rod into the mechanism for rotatably connecting the second elbow including a mechanism for rotatably mating with the mechanism for receiving and mechanism for rotatably connecting the elbows wherein the flexible rod slidably inserts within at least a portion of the mechanism for rotatably connecting to connect the first and second elbows; and wherein at least one of the elbows includes a mechanism for holding the O-ring between the flexible rod and the end of the second elbow, the O-ring disposed in resilient contact with and between the mechanism for receiving and the mechanism for mating.

Abstract: An extensible swivel for lamps and the like is disclosed. The extensible swivel preferably is incorporated in a leg or an arm of a lamp, where the leg or the arm includes upper and lower tubular members joined by a retainer ring. An extension sleeve preferably is secured with one end in the upper tubular member and, a hollow swivel is secured to the sleeve's other end. The lower tubular member is provided with a key sleeve having a key along its axial length. The hollow swivel is designed to be accommodated, for axial and rotational adjustment, within the key sleeve. Such adjustment, when made, is held frictionally stable and stationary. The hollow swivel includes a spindle on which the swivel's operative parts are mounted. These operative parts include a stop ring fixedly mounted to the spindle, at least one double-leg ring member mounted in operative association with the stop ring and, a stop bushing provided with a channel and mounted in operative association with the double-leg ring member.

Abstract: An adjustable over-the-top agitator for a liquid manure tank. To periodically break up the crust on liquid manure stored in an open top tank, the liquid manure is withdrawn from the bottom of the tank and is discharged through a nozzle on the end of an external delivery pipe into contact with the crust. The upper end of the delivery pipe is connected by a swivel coupling to a vertical end of a connecting pipe, while the opposite horizontal end of the connecting pipe is connected by a second swivel coupling to the discharge nozzle. By rotating the connecting pipe about the axis of the delivery pipe, the nozzle can be moved in a horizontal path, while swiveling the discharge nozzle about the horizontal end of the connecting pipe moves the nozzle in a vertical arc. A torsion spring is associated with the second swivel coupling to bias the discharge nozzle to a horizontal position.

Abstract: A swivel stop for use in lamps of all kinds comprising a lower tube and an upper tube, a member partially secured within the lower tube and partially extending therefrom and formed with a keyway and a stop, and a sleeve secured within the upper tube and provided with a pair of keys.The swivel stop preferably is designed in two versions: an extendable version and a non-extendable version.

Abstract: A suction type inlet head, adapted for coupling to a fire hose or the like, is lowered into a tank, such as a portable tank known as a "dump-and-go" tank used in fighting fires in rural areas. The suction or inlet head is heavy enough to gravitate to and remain in stable position upon the bottom of the tank, and to this end has a flat weighted base plate which lies directly upon the bottom of the tank. The base plate supports, in a position slightly elevated above the tank bottom, an inlet nozzle retaining plate, having a wide transverse slot for receiving a transversely extending suction cylinder eccentrically, pivotally mounted upon the base. The suction cylinder merges into a hollow connecting portion on which there is provided a hose coupling for connecting the fire hose in communication with the cylinder.

Abstract: A lightweight articulated loading arm for transferring fluid from an offshore articulated loading column to a marine tanker, and for monitoring the position of the loading arm relative to a safe operating envelope. The arm includes an inboard conduit member mounted on the loading column for pivotal movement about a first horizontal axis, and an outboard conduit member connected to the inboard member for pivotal movement about second and third horizontal axes. A tensioner, mounted on the loading column, provides power to rotate the loading arm about the first horizontal axis and to bias the loading arm toward a stowed position. Power to operate and control the loading arm is provided by sources located on the marine tanker and coupled to the loading arm by hydraulic and/or electrical lines which are mounted on the loading column and on the loading arm.

Abstract: A rigid stem dial gauge, such as a thermometer has an assembly which connects the thermometer stem to the pointer shaft and permits the two parts to be disposed at a range of angles to each other. The assembly comprises a pair of cylindrical housings, one mounted coaxially and rotatably within the other, the inner housing being connected to the thermometer stem shaft of the gauge and the outer housing being connected to the pointer shaft. The stem and the shaft are interconnected by a flexible drive accommodated within the housings.

Abstract: An apparatus for raising a liquid aeration apparatus having a carrier element 62 which can be guided to a position engaging an air distributing pipe 36 to raise same by means of a guide rod 66. The movement of the guide rod is controlled by a guide device 64 disposed on the free end of a boom 52 suspended vertically above the air distributing pipe, such that the movement of the guide rod is restricted to a plane perpendicular to the air distributing pipe, thus preventing contact with and damage to aeration tubes 38 extending from the air distributing pipe.

Abstract: A pump end swivel for mounting either on the island or on the gasoline pump pedestal adjacent to the island. The swivel has a base member with an elbow assembly rotatably journaled therein. The elbow assembly has concentric inner and outer elbow members for connection to the liquid fuel and fuel vapor recovery lines of a coaxial hose. Stop means are provided to limit the rotation of the elbow assembly and the coaxial hose connected thereto relative to the base member of the pump end swivel.