Abstract: A rotary leadthrough for feeding pressurizing medium to a rotatably mounted part includes a stator and a rotor rotatable relative thereto, the stator and the rotor being formed with at least one channel, respectively, sealing elements and sealing counter-elements respectively carried by one and the other of the stator and the rotor for cooperatively sealing the stator and the rotor therebetween and for coupling the respective channels formed in the stator and the rotor into at least one medium connection path through which pressurizing medium is feedable, the stator having a longitudinal axis, and the rotor having a rotational axis coinciding with the longitudinal axis of the stator, and a device for axially displacing the stator and the rotor relative to one another from a first position thereof wherein the sealing elements are in sealing engagement with the sealing counter-elements, to a second position thereof wherein the sealing elements and the sealing counter-elements are spaced from one another.

Abstract: A rotatable double-ended quick connect valve comprised of a single valve body for rotatably mounting on a shaft, and fitted with two separately located quick connect valve mechanisms for the continuous transfer of fluids (liquid or gaseous or a combination of both) between a pipe connection fixedly mounted on the same shaft, and a continuing series of mating single-ended quick connect valves fixedly mounted in separate locations along the travel path of said double-ended quick connect valve.

Abstract: A hydraulic tool comprises an action part arranged to act on a threaded connector for tightening and loosening the same, a drive part arranged to operate the action part so that the action part tightens or loosens a threaded connector, the drive part being formed as a hydraulically-operated drive, hose units arranged to supply a hydraulic working liquid to the drive, and a connector connecting the hose units with the drive, the connector including a first connector portion mounted on one of the parts turnably relative to the latter about a first axis, and a second connector portion mounted on the first connector portion turnably about a second axis which is inclined at an angle relative to the first axis.

Abstract: Heating or cooling roll having a roll jacket with axially running peripheral borings at the roll ends, where the borings are connected via a fixed ring shaped part which is sealed against the roll jacket, to each other and/or with the feed-in or feed-out lines of the heat carrying fluid which are mounted outside of the roll. With this simply constructed device, the feeding in and out of the heat carrying fluid is made possible, even for rolls which have a roll jacket which is shiftable in the pressure plane.

Abstract: A fluid connection and control device for fluid machines permits fluid inlet or outlet connections without the necessity for threaded connection to the machine. This is accomplished by an elongate radially symmetrical body having first and second ends and a central axial fluid passage connecting the ends. The body is appropriately sized for the fluid channel of the fluid machine and has a provision at the first end for attachment of a flexible hose. The second end has a provision for a fluid tight seal between the body and the fluid channel as well as a mechanism by which the body is retained within the fluid channel of the fluid machine while permitting rotation thereof. Options are provided for incorporation of a valve mechanism for controlling the fluid flow. This provides the advantages of rapid assembly and avoidance of undue stresses to the fluid machine housing.

Abstract: A device for transferring a pressure medium has a first stationary component and a second component that is inserted into the first stationary component such that it is rotatably drivable therein. A first annular chamber is defined between the first stationary component and the second component and has a first and a second axial end. The first axial end is delimited at least partially by the first stationary component and the second axial end is delimited at least partially by the second component. An inlet line and an outlet line are connected to the first annular chamber. The outlet line guides the pressure medium to a consuming device. Radially extending sealing slots are defined between the first stationary component and the second component at the first and the second axial ends whereby the sealing slots have adjustable slot widths.

Abstract: Mounting block for a shaft opened at an end and having in its interior a series of decreasing diameter chambers, defining in the first chamber a bearing with a plurality of balls retained between two races. An outer race forming the block cover and in turn housing an upper retainer and an inner race attached to the shaft providing the other mating surface for the bearing. Following the inner race, a washer is mounted fitting on its periphery against a cylindrical projection of the first race. Next, a second inner retainer is mounted in the second chamber. The axially drilled shaft has, mating with the third chamber, a cross hollow pin communicating with the chamber, which in turn communicates with the outside by means of two radial passages made in the body, these passages ending in outer nozzles. The axial conduit of the shaft exits, at an angle of 90.degree., through the end exiting from the block opening.

Abstract: A windshield cleaning system with a washing system includes a washing liquid pipe non-rotatably fixed in a bore of a wiper shaft, the end of which washing liquid pipe is inserted into a pot-like connecting piece protected against twisting. Thereby the connecting piece is bracelessly centered with respect to the end of the washing liquid pipe so that it can also make a possible wobbling movement of the end in radial direction. Thus a long lifetime of the connecting point between the rotating end of the washing liquid pipe and the non-rotatable connecting piece is achieved.

Abstract: A swivel valve has a valve body having an elongated bore with both the valve body and the bore having first and second ends. A gas or fluid port is located in the first end of the valve body and is in communication with the first end of the bore. A passageway extends from the second end of the bore and terminates in an annular groove extending around the outer surface of the valve body. A swivel connection is rotatably mounted on the valve body around said annular groove and has a passageway in communication with the annular groove. Sealing rings are located on opposite sides of the annular groove to prevent the escape of gas from the groove to the atmosphere between the swivel connection and the outer surface of the valve body, and to equalize the gas pressure forces on the swivel connection.

Abstract: A hydraulic swivel 40 transfers pressurized hydraulic fluid from a stationary spool 50 to a housing 42 mounted for rotation relative to the spool 50. The swivel 40 also carries a drain line 64 placed in fluid communication with the spool/housing interface above and below the pressurized fluid passages so that any fluid leaking from the pressurized fluid passages will find its way to the drain and thus not to the outside of the swivel.

Abstract: The tool gripping and releasing devices carried by the indexing turret head of a radial component insertion machine are air operated and sealed connections are selectively established between stationary and rotating air transfer rings. Supplied pressurized air leaves the stationary air transfer plate via blind bores and then forces its way through small apertures in gaskets which close these blind bores. The gasket material is deformed into sealing engagement with the rotating air transfer ring establishing a connection with the air inlet thereof.

Abstract: A coupling mechanism for a rotary fluid cylinder which comprises a rotary member and a fluid feeding member concentrically mounted on said rotary member, at least one fluid passage being formed for supplying fluid from the fluid feeding member to the rotary member even while the rotary member is rotating. The coupling mechanism comprises a pair of rolling bearings interposed between the fluid feeding member and the rotary member at the respective extreme ends of the fluid feeding member so as to allow relative rotation of the rotary member with respect to the fluid feeding member. A biasing member for applying a predetermined pre-load to the respective rolling bearing is provided. The applied pre-load acts on the rolling bearings in such a manner that the rolling bearings are biased to move away from each other in their axial direction.

Abstract: A spray gun or fuel nozzle wherein the underside of the pistol grip handle is formed with a socket for a rotary insert which is connected to two or more supply conduits for flowable materials. The insert has passages which convey flowable materials from the respective conduits to discrete channels in or on the housing of the gun or nozzle. One of the passages can extend from the respective conduit to the inner end face of the insert to admit flowable material into a channel of the handle, and one or more passages can extend from the respective conduit or conduits to annular spaces which are provided in the peripheral surface of the insert and/or in the adjacent internal surface of the handle and each of which communicates with a discrete channel. At least one channel can be provided in a guard in front of the trigger which is actuatable by the hand holding the handle.

Abstract: The device for feeding a fluid to a rotating machine part (6), in particular a machine tool spindle, has a housing (1) arranged to be fixed against rotation and a hollow shaft (2) mounted rotatably therein, one end of which, the inner end (2a) is connected by way of a sliding ring seal (5) to an inlet duct (4) in the housing (1). At the other, the outer, end (2b) of the hollow shaft (2, 2') there is provided a coupling tube (7, 7') coaxial with the hollow shaft and which is axially slidable with respect to the rotating machine part (6) and can be engaged with it with a sealing arrangement (8) interposed.

Abstract: A vehicle wash apparatus includes a reciprocating gantry-type framework with rotating fluid dispensers along an upper extent thereof and at opposite sides thereof which are adapted to be rotated to deliver washing fluid at the vehicle as the apparatus traverses the length of the vehicle. A tilt mechanism is provided so that the rotating manifolds acan be tilted at opposite ends of the vehicle to direct the cleaning fluid at the ends of the vehicle when the apparatus is positioned adjacent the ends of the vehicle. A unique bearing seal element supports the rotating manifolds on a rotatably driven coupling from a motor so that liquid can be delivered to the rotating manifolds in a leak-free environment and over an extended life. An ultra-high molecular weight polyethylene material is utilized in bearing seal members in the element which serve both as a liquid seal and a bearing surface.

Abstract: An improved receiver dryer header portion for a refrigeration circuit is disclosed. The receiver dryer comprises a cylindrical body having an upper opening and a header portion disposed on the upper opening. The header portion includes a cover plate which is formed as step-like structure having a lower flat surface and an upper flat surface. A fluid inlet port is rotatably disposed on the lower flat surface and a fluid outlet port is rotatably disposed on the upper flat surface. This enables the fluid outlet port to rotate 360.degree. and the fluid input port to rotate more than 180.degree. thereby permitting the piping arrangement of the refrigeration circuit to be easily connected and properly sealed.

Abstract: A rotating union including a seal assembly having a rotating seal member carried by the rotor, a non-rotating floating seal member carried by a fluid actuated assembly mounted in and keyed to the housing of the union, the fluid actuated assembly including a flexible diaphragm interposed in the fluid flow path and which is flexed responsive to fluid pressure through the union to move the non-rotating seal member into engagement with the rotating seal member, the diaphragm being unflexed in the absence of fluid pressure through the union whereby the non-rotating seal member is maintained out of engagement with the rotating seal member.

Abstract: A continuous output device for liquid or gaseous fluids comprising a rail having channels each opening to a first surface of the rail through a slit sealed by a sealing strip, the fluid being supplied to the channels of the rail, and a coupling having an opening member for locally pushing aside the sealing strip for passing, at activation of the coupling, the fluid to said coupling beyond the sealing strip for further distribution to a using place. The sealing strip comprises a spiral spring covered with a sealing body for sealing against the slit. The revolutions of the spiral spring are inclined so that the torsional properties of the spring are used for pushing aside the sealing strip.

Abstract: A sealer (10) for vacuum containers comprises a valve unit (12) and a removable vacuum-pump head (14). The valve unit consists of a valve housing (24) which can be connected to a vacuum container to be evacuated, for example through a flange (16), and a cylindrical valve element (42) inserted into the valve housing. The valve element has a top transverse opening (46) for interaction with a driving tool, a middle transverse hole (48) for connection to a source of vacuum through the above-mentioned vacuum pump head when the latter is fitted onto the valve element, a bottom transverse hole (52), and an axial bore (50) which connects the middle transverse hole to the bottom transverse hole. The valve element also has a threaded portion (44) which engages an inner thread (36) formed in the valve housing, so that the valve element can be screwed into the valve housing, and can interact with saddle (40) in the valve housing.

Abstract: A swivel connector for supplying a fluid, comprises a first member having an axis and a cylindrical surface, the first member being provided with two separate first passages which open at the outer cylindrical surface at two axially spaced locations, and a second member having an inner cylindrical surface which defines an opening for receiving the outer cylindrical surface of the first member so that the members are swivelable relative to one another, the second member being provided with two second passages which are separate from one another and open at the inner cylindrical surface at two axially spaced locatyions substantially corresponding to the first mentioned axially spaced locations, and two circular grooves provided in at least one of the surfaces and each communicating one of the first passages with a respective one of the second passages.

Abstract: A fuel feed line having a swivel supported horizontal pick-up tube to draw fuel from the fuel tank where the fuel is of maximum depth. The depth of fuel in the tank may vary due to gravitational or centrifugal forces acting on the fuel.

Abstract: A rotary actuator includes a shaft rotatably mounted on a body, and a servovalve arranged to operate a vane motor for selectively rotating the shaft relative to the body. A portion of the shaft extends beyond the body. Supply and return passages are provided to the body and shaft so that fluid power supplied to the body is supplied to the servovalve and is also available at the end of the shaft beyond the body. Two or more such rotary actuators may be connected by intermediate brackets to provide a wrist actuator capable of movement about axes.

Abstract: A wheel seal assembly is provided for a vehicle having an onboard system for controlling the pressure of air in a tire of the vehicle. The wheel seal assembly comprises a first annular seal members coaxial with the vehicle axle housing and mounted thereon for axial displacement relative thereto and toward and away from a second annular seal member coaxial with the first seal member and supported on the corresponding wheel assembly of the vehicle which is mounted on the axle housing for rotation relative thereto. The annular seal members may be mounted on the axle housing directly through or integrally with the associated rotating or non-rotating wheel bearing race. The two seal members have annular planar sealing surfaces facially engaging one another and flow passageways therethrough to provide for the flow of air across the seal members during inflation and deflation of the corresponding vehicle tire.

Abstract: This relates to a rotary switch and rotary valve assembly for a multiple work station machine wherein the work stations rotate and are sequentially presented to an operating position. There may be a high voltage and two low voltage switches with the switches being so constructed wherein electrical connections are made with each work station in timed relation to its presentation to the work position and for the required period of time. Further, the rotary valve assembly functions in sequence to present operating fluids to each work station in the order of presentation of such work station to its operating position and in timed sequence to the operation performed thereby.

Abstract: In an air rotary joint supplying compressed air from an outside source through a rotating shaft to a pneumatic equipment; a sealing device for the air rotary joint, in which lubricating oil chambers partitioned by air seals are formed on both sides of an air inlet port, an inlet piping is connected to one lubricating oil chamber, a check valve for checking a counter flow of lubricating oil is installed in the inlet piping, an outlet piping is connected to the other lubricating oil chamber, and a relief valve for maintaining a hydraulic pressure in the lubricating oil chamber below a specified maximum value is installed in the outlet piping so as to prevent air leakage due to counter flow of compressed air into the lubricating oil chamber.

Abstract: The rotary fluid coupling decreases the possibility of microcontaminates entering the fluid flow line and is thus especially suitable for processing equipment in manufacturing of wafers and other components for the microcomputer industry. The rotary fluid coupling interconnects a fluid conveying passageway and a spindle element to a duct in a second element such that the two elements are rotatable with respect to each other. An axial channel is provided along the length of the spindle. A planar faced plate is mounted on the spindle. A bore in the spindle plate is in axial alignment with the spindle channel, generally forming a single continuous fluid conveying passageway. A second element has a generally planar distal faced plate. A fluid conducting duct extends from an aperture on the distal face of the second plate to a fluid source with the two faces generally aligned in parallel relationship to each other creating a fluid permeable gap.

Abstract: A rotary connector for fluid transmission between a housing part and a shaft via rings has a bypass provided with a valve which connects the intermediate pressure space with either the leakage space or the main pressure space upon a drop in the main pressure below the pressure in the intermediate pressure space to provide inverse gap control and thereby prevent the sliding ring from pressing mechanically agains the counter-ring and generating sliding friction, heat and wear.

Abstract: A top head drive cooling system is provided for an earth drilling machine of the type having a mast, a top head drive assembly mounted for movement along the mast, a quill included in the top head drive assembly, and an electric motor for rotating the quill. This cooling system includes an air duct mounted to the mast and defining a slot extending along the mast. The slot is sealed by a pair of flexible resilient lips which bridge the slot, and a blower is situated at ground level to blow cooling air into the air duct. A conduit is provided on the top head drive assembly, and the conduit extends between the lips into the air duct and conducts air from the air duct to the electric motor. The portion of the conduit which extends into the air duct is preferably tapered at both ends in order to provide a sliding seal against the lips. A position measuring system is coupled to the conduit and is positioned within the air duct.

Abstract: This relates to a rotary switch and rotary valve assembly for a multiple work station machine wherein the work stations rotate and are sequentially presented to an operating position. There may be a high voltage and two low voltage switches with the switches being so constructed wherein electrical connections are made with each work station in timed relation to its presentation to the work position and for the required period of time. Further, the rotary valve assembly functions in sequence to present operating fluids to each work station in the order of presentation of such work station to its operating position and in timed sequence to the operation performed thereby.

Abstract: A swivel mount for the outlet conduit of a pressure vessel is disclosed that can be rotated to a desired position to provide access to a component attached to the mount without interrupting the flow of material from the pressure vessel to the mount and the component. The mount includes a hollow stem that is surrounded by and is in rotational sealing engagement with a sleeve. A sealed chamber is formed between the sleeve and the stem that receives material from the outlet conduit of the pressure vessel through a laterl aperture in the stem. The sleeve itself has at least one outlet conduit that is joined to the chamber and can direct material from the chamber to the component.

Abstract: A universal swivel includes an inlet conduit, a swivel coupler having a side conduit rotatably engageable with the inlet conduit, an outlet conduit longitudinally rotatably mounted in a block of the coupler to be universally oriented relative to the inlet conduit, and an adjusting valve formed in the outlet conduit for adjusting a fluid flow rate through the swivel joint and also serving as a driving handle for operating the outlet conduit with respect to the inlet conduit.

Abstract: A vehicle wheel and axle assembly having inflatable tires to be connected with an air filling device on the vehicle, which comprises an annular sealing assembly having a pair of annular radially expanding lobes which upon pressurization expand into sealing engagement and including a normally closed check valve which permits the flow of pressurized air to said lobes and prevents the flow of pressurized air into the tires until the lobes are in sealing engagement.

Abstract: A rotary coaxial air feed tube assembly for a pneumatic chuck with one end of the assembly screw coupled to the chuck and the other end of the assembly being coupled to a rotary air feed joint, keying means being provided for coupling the feed tube assembly to a rotary drive spindle so as to impart a rotary drive to the assembly and to the chuck.

Abstract: A bending machine having a rotary bending head to which fluid pressure is transmitted via a fluid flow or fluid pressure transmission device comprising a fixed block and a rotary shaft mounted in relation to the fixed block so as to be rotatable relative thereto. The fixed block has at least one passageway through it extending to the rotary shaft, and the rotary shaft has at least one annular groove in registration with the fixed block passageway and at least one axially extending passageway in communication with the annular groove. As a result, the axial passageway is in communication with the fixed block passageway independently of the angular position of the rotary shaft relative to the fixed block.

Abstract: A rotary set on a shaft fluid power coupling which may be used on a package wrapping machine is disclosed. The coupling is shown in FIG. 14 of the drawings.The coupling has a first member having a central bore through which a rotary main shaft passes, and is characterized by a face which lies in a plane perpendicular to the shaft which has a cylindrical annular groove therein. A passage within said first member permits fluid to flow to said annular groove. The coupling has a second member which rotates with respect to said first member, and has a face which lies in a plane perpendicular to the main shaft axis of rotation. The second member also has a cylindrical annular extension which extends into said first member cylindrical annular groove. Fluid is passed from the annular space formed between said annular groove and said annular extension to a second member second face which has a fluid passage way connecting means.

Abstract: A hose winding cart including a handle, a base including wheels, a pair of identically shaped lateral arms, a reel, a first stud and a second stud. The pair of lateral elements are connected to the handle and the base at positions which are spaced apart in a longitudinal direction. The reel for winding a hose thereon includes a pair of identically shaped reel halves, each of the reel halves having snap connections thereon for interconnecting the reel halves to form the reel. The first stud is connected between one of the lateral elements and one of the reel halves for rotatably supporting one side of the reel, the first stud having connections thereon for supplying a fluid medium to a hose carried by the reel. The second stud is connected between the other one of the lateral elements and the other one of the reel halves for rotatably supporting the other side of the reel. The second stud includes a crank extending therefrom for rotating the reel.

Abstract: A rotary joint having a non rotary housing surrounding a rotating shaft and being sealed by a mechanical seal. Monitoring impulses are transmitted by hydraulic fluid which is transported between the housing and the shaft by means of a distribution socket. The socket is arranged so that a number of column seals are formed between the shaft and the socket. The apparatus is supported by two prestressed, reversed roller bearings.

Abstract: In the rotary coupling for feeding a gaseous or liquid pressurized medium from a first to a second machine part, which are rotatable with respect to each other, the first machine part contains at least one feed piston formed as a spring supported hollow piston and a sliding shoe is mounted between the feed piston and the second machine part. In order to make a rotary coupling, particularly a high pressure rotary coupling, in which when no operating medium is supplied during rotation no frictional forces are present between the component parts, the feed piston contains a mechanically driven check valve which opens in the feed direction and at least one piston spring braced between the feed piston and the first machine part is provided whose compression force is directed opposing that force which is exerted by the medium under pressure on the feed piston.

Abstract: An assembly of operational connections for a pneumatic jack, having combined mounting for ensuring at least two operations. A first operational connection (1) ensuring the operation of regulating the discharge from the jack is provided beyond its endwall (4) which is pierced with a hole (5), with an assembly collar (6) in which is mounted a second operational connection (15) which ensures any other desired operation, arranged perpendicularly to the first operational connection (1) and equipped with a common projecting threaded ferrule (19) for the mounting of the assembly upon a jack cylinder.

Abstract: A cooling arrangement for a forming tool of a machine for forming molten glass or other thermoplastic materials, wherein the forming tool is coolable by a pressure fluid and turnable about a first pivoting axle, includes at least one stationary supply conduit having an outlet opening, a pressure distributing device for the forming tool turnable relative to said supply conduit about the first pivoting axle, and a connecting conduit arranged to connect each supply conduit with the pressure fluid distributing device and having an articulated conduit component turnable about a second pivoting axle which is fixed relative to the pressure fluid distributing device and is parallel to the first pivoting axle, the articulated conduit component having an inlet opening which is in a constant communication with the outlet opening of the supply conduit, the articulated conduit component being displaceable relative to the supply conduit in a displacement plane normal to the pivoting axles.

Abstract: The present invention provides a rotary fluid coupler for attachment to a robot arm. The present inventive apparatus and method allows the coupling to connect in a nonconcentric manner a plurality of separate fluid streams allowing the outer shell of the coupler to be fixably attached or restrained from angular movement by the robot arm and having an inner portion adaptable for connection to a rotatable wrist of a robot for a complete 360 degree rotation.

Abstract: This invention relates to a high pressure valve of the dump type. The valve body contains a slideable, hollow spool with ports connecting its interior and exterior. When the valve is in the on position, all ports are located in the pressurized portion of the valve body, and fluid flows to an outlet connected to the hollow spool. In the off position, at least one port is outside the pressurized area of the valve body, thereby relieving fluid pressure. The ports slide through a seal of self-pressurizing construction. The valve may also be used as a high pressure swivel, or combination valve swivel, by rotating the spool, if the spool is supported by bearings.

Abstract: A liquid feed device for conducting a pressurized medium from a stationary housing to a rotatable component is so constructed that the applied force of a sealing surface of a sliding shoe of the housing on the running surface of the movable structural component is regulated so that on the one hand an effective seal between the sealing surface and the running surface independent of the operating conditions of the system is guaranteed and on the other hand the frictional forces operating are kept as small as possible.

Abstract: A domestic building having a base, a rotatable portion mounted on the base and providing a living space, said rotatable portion having a rigid frame supported on rollers which engage a rail fixed to the base, and a coupling to provide for the flow of water to said rotatable portion and drainage therefrom.

Abstract: A multi-bladed propeller and shaft assembly is provided in which air can be fed to the propeller blades to reduce the effects of cavitation. A shaft leads to a multi-bladed propeller and carries a sleeve formed with inlet passages and axial and radial passages leading to the respective blades. A slip ring supported in an anti-rotation device allows the shaft sleeve to rotate within axially spaced bearings of the slip ring. Axially spaced air seals together define with the body of the slip ring an annulus within which inlet passages rotate. Each seal is formed as a multiplicity of arcuate segments resiliently biased towards the sleeve and having movably sealed end face portions to maintain pressure tightness. The body further has a radial flow passage for admission of air under pressure to the annular space and a flexible fluid connector connects the radial flow passage to an air supply line leading from the hull structure.

Abstract: A rotatable swivel adapted for assuring the passage of a scraper pig or a separator pig through a conveyance system of which and the swivel is a part is disclosed. The swivel includes a guide vane pivotally mounted in an inner ring of a swivel body to enable movement between a retracted position for assembling the inner ring with an outer ring and an operating position for insuring the passage of the pig from an inlet to an outlet communicating with a toroidally shaped conduit chamber of the rotatable swivel. A removable locking pin secures the guide vane in the operating position to assure the passage of the pig. A retracted position port and an operating position port are disposed in an outer ring of the swivel body to enable movement of the guide vane between the retracted and operating positions.

Abstract: A robot wrist of an industrial robot having a wrist housing supporting two orthogonally arranged rotating output shafts therein, each of the shafts being connected to a robot hand, and a built-in fluid conveying means provided for distributing pressurized air introduced from the outside of the robot wrist toward the robot hand attached to one of the rotating cutput shafts. An output end of each of the two rotating output shafts may either be plugged by a plug element or closed by a stop valve when the output end is not connected to the robot hand.

Abstract: A hose storage apparatus for storing and transporting a hose on a reel. The reel is rotatably mounted on a frame which is formed of a plastic material. The frame has a molded plastic handle pivotally attached thereto. The handle is positionable in an upright attitude to provide a convenient means for manipulating the apparatus. The handle may be selectively lowered to a lowered position wherein portions of the handle are positioned adjacent to the frame to reduce the height of the apparatus and thereby facilitate storage. A lock releasably secures the handle to the frame in a selected attitude. The reel includes a pair of identical molded plastic reel halves. Each half includes a reel side with a hub. Each hub is rotatably mounted in the frame. A plurality of pylons is formed integral with each of the reel sides. The pylons of each reel side are secured to each other and form a hose support surface. A hose connector is mounted on one reel side.

Abstract: In order to avoid excessive wear between a sealing ring and a shaft, the sealing ring is provided with a biased sealing lip which is moved against the shaft by a pressure medium flowing into an infeed channel of the shaft. When not in use, the sealing lips are spaced from the shaft and serve to close off the pressure medium chambers of the feed device.In order to exhaust air, the flow of pressure medium is shut off to the feed device so that the sealing lips are sprung back against a projection of the device in spaced relation to the shaft. This permits the pressure medium to exhaust from the shaft through a gap between the shaft and the feed device.

Abstract: A hose storage apparatus for storing and transporting a hose on a reel. The reel is rotatably mounted on a frame which is formed of a plastic material. The frame has a molded plastic handle pivotally attached thereto. The handle is positionable in an upright attitude to provide a convenient means for manipulating the apparatus. The handle may be selectively lowered to a lowered position wherein portions of the handle are positioned adjacent to the frame to reduce the height of the apparatus and thereby facilitate storage. A lock releasably secures the handle to the frame in a selected attitude. The reel includes a pair of identical molded plastic reel halves. Each half includes a reel side with a hub. Each hub is rotatably mounted in the frame. A plurality of pylons is formed integral with each of the reel sides. The pylons of each reel side are secured to each other and form a hose support surface. A hose connector is mounted on one reel side.