Abstract: A method and apparatus for increasing the circulating airflow of induced-draft, gas-fired multi-stage furnaces without creating conditions that result in cold spot corrosion therein. Control circuitry is provided to selectably increase the circulating airflow of the furnace during low stage operation. The control circuitry is arranged so that increases in the magnitude of the circulating airflow of the furnace are accompanied by predetermined increases in the magnitude of the combustion airflow of the furnace. The magnitudes of the circulating and combustion airflows are so related to one another that the temperature at the output of the heat exchanger is maintained at a value which is approximately constant, and which is high enough to assure that water cannot condense thereon. The control circuitry may include a relay or relay-like device that is connected to prevent the high stage solenoid of the gas valve from becoming actuated during low stage operation.

Abstract: A method for preparing aerosols of water-sensitive medicaments and a pharmaceutical kit for aerosol administration are disclosed. The kit includes (a) a solid state open matrix network of a medicament in a first container; and (b) an aqueous vehicle in a second container. The first and second containers may be separate or they may be chambers within a single housing. The solid state network may be a unit dose of medicament, and the quantity of aqueous vehicle will then be that quantity needed to deliver one unit dose by aerosol; alternatively, the solid state network may contain a plurality of unit doses of medicament, in which case the quantity of aqueous vehicle will be that quantity needed to deliver the number of unit doses in the network. The kit may also include a metered dose nebulizer. A preferred medicament for use in the method is formoterol.

Abstract: An intubation scope assembly adapted to facilitate the positioning of an endotracheal tube in a patient comprising an electromagnetic or sound energy source which enters the vocal cords exteriorly of the neck of the patient with energy having a direction, wavelength and intensity capable of entering the trachea, substantially avoiding encompassing the entire pharynx and capable of being transmitted cephalad substantially between and/or around the vocal cords. A suitable sensor for the energy emitted by such source comprises a stylet assembly, the distal end of which can detect or collect the energy transmitted between and/or around the vocal cords and the proximal end of which can monitor the detected or collected energy to thereby locate the vocal cords for positioning an endotracheal tube therebetween. A system and method of intubating a patient with the foregoing assembly are also disclosed.

Abstract: The equipment has a helmet, a full face-cover fitted with fastenings for fixing it to the helmet, and with a coupling for connection to a breathable gas feed hose. It also has a flexible envelope extending the helmet and the face-cover downwards. For leakproof junction between the helmet, the face-cover and the envelope, a hoop is sealingly connected to the helmet. It has a lower branch which constitutes a closed bottom loop for receiving the envelope and a transverse branch having one side designed to sealingly receive the shell of the helmet and an opposite side which sealingly receives the face-cover. A plug rigidly fixed to the face-cover and placed in a vertical midplane of the face-cover, at the bottom thereof, engages a socket pivotally connected to the hoop. Lateral fasteners complete the connection.

Abstract: The lung ventilator safety valve includes a valve housing, an armature connected to the valve housing, a shaft mounted at one end to the armature and having a poppet valve seal on the other end for sealing the vent in a valve closed position and for allowing a relief flow in a valve open position. An electromagnetic coil mounted to the valve housing adjacent to the armature when energized urges the armature to the armature closed position, and a return spring urges the armature to an open position. The poppet valve seal has an aperture extending through the poppet valve seal, so that when there is relief flow through the safety valve vent, the relief flow across the poppet valve seal creates a jet venturi effect to cause a negative pressure on the side of the poppet valve seal opposite the relief flow that biases the safety valve to open further.

Abstract: The filter medium of the present invention includes a pleated filter layer and a flat filter layer adjacent to the pleated filter layer. Both the pleated filter layer and the flat filter layer may contain a thermoplastic material allowing the filter layers to be joined using ultrasonic welding or heat sealing and facilitating manufacturing. The filter medium has a small height which makes it appropriate for use in flat fold respirators and flat filters.

Abstract: A method is provided for surgically treating obstructive sleep apnea syndrome. In a first embodiment of the invention, a procedure is provided which includes the step of splitting the hyoid bone to open the pharyngeal space anteriorly, posteriorly and laterally, using the mandible as support for both anterior and lateral advancement and expansion, thereby relieving the effects of OSAS. In another embodiment of the invention, a modified version of the first embodiment is provided in which the hyoid is suspended but not split. In this embodiment, the pharyngeal space is increased anteriorly and posteriorly, but to a lesser degree laterally. Splitting the hyoid and distracting it is believed effective as it provides increased pharyngeal space.

Abstract: A dentally retained intra-oral appliance worn at night for treatment of snoring and obstructive sleep apnea. The appliance maintains the patient's mandible in an anterior, protruded position to prevent obstruction of the pharyngeal airway. The appliance allows a limited degree of lateral movement of the mandible relative to the upper jaw in the protruded position to prevent aggravation of the patient's tempromandibular joint and associated muscles and ligaments. The appliance preferably consists of an upper bite block conforming to the patient's maxillary dentition, a lower bite block conforming to the patient's mandibular dentition, and a connecting assembly secured to the upper and lower bite blocks for adjustably coupling the upper and lower bite blocks together. The invention also relates to a method of treating snoring and obstructive sleep apnea using the dental appliance.

Abstract: The invention provides surgical systems and methods for ablating heart tissue within the interior and/or exterior of the heart. A plurality of probes is provided with each probe configured for introduction into the chest for engaging the heart. Each probe includes an elongated shaft having an elongated ablating surface of a predetermined shape. The elongated shaft and the elongated ablating surface of each probe are configured to ablate a portion of the heart. A sealing device affixed to the heart tissue forms a hemostatic seal between the probe and the penetration in the heart to inhibit blood loss therethrough.

Abstract: An accelerated method of orthokeratology includes the steps of softening of the cornea with a softening agent, applying a mold to reshape the cornea to a desired anterior curvature, and rapidly restabilizing or "fixing" the corneal tissues so that the cornea retains its new configuration. A chemical softening agent, such as glutaric anhydride is applied to the cornea to soften the cornea, after which a specially designed mold of predetermined curvature and configuration is applied to the cornea. Slight downward pressure is applied to the mold for a predetermined period of time to re-shape the cornea. The mold is maintained in position while a stabilizing agent, such as a UV light source, is positioned above the mold. The stabilizing agent, i.e. UV light, is applied to the cornea for a predetermined time, wherein the stabilizing agent immediately restabilizes the corneal tissue so that the cornea immediately retains its shape upon removal of the mold.

Abstract: A medical instrument (10) is used by a surgeon (S) operating on a patient (P). A surgical implement (12) is held by the surgeon performing the operation and is manipulable by him to bring a portion (14) of the implement into contact with the patient's body (B). A source (16) of ultrasonic pulses (18) produces a stream of such pulses which are supplied to the instrument. The method of the present invention enables pulses to be supplied to the instrument for a defined interval (T.sub.D) after which there is a defined interval (T.sub.E) in which no pulses are delivered. At the end of this pause pulses are again delivered to the instrument. Provision of a pause enable the surgeon to better control the operation, for example, by preventing overcutting of tissue.

Abstract: A system allows treatment of sublayers of tissue lying beneath an outer layer of tissue. The system includes an energy emitter able to heat predetermined areas of the tissue sublayers. The energy for heating typically is generated by a laser or lamp able to produce electromagnetic radiation in the infrared region to thereby cause tissue at the predetermined areas to heat and shrink. The shrinkage causes the shape of the outer layer or surface to change in a controlled manner that corrects the problematic surface formation, e.g., refractive error. An energy absorption modifier is used to avoid damage to the outer layer of tissue as energy is passed therethrough.

Abstract: The invention provides a medical device having first and second elongate tubular members. Each member comprises a manometer at a distal end and a lumen communicating with a port at the distal end. An expandable occlusive member is optionally mounted on either or both tubular members proximal to the distal port. A proximal end of each tubular member is adapted for attachment to an oxygenator and/or a pump for aspirating blood from an artery or a symptomatic carotid artery through the first tubular member and perfusing the blood into the contralateral carotid artery through the second tubular member, thereby providing a means of augmenting the collateral vasculature and maintaining perfusion distal to the offending lesion. The flow rate of blood can be controlled by inflating or deflating the balloon occluder. The device may employ a neuroprotective agent, hypothermic perfusion, and an atherectomy device or an extracorporeal pumping mechanism to remove a vascular occlusion and reestablish cerebral perfusion.

Abstract: A medical ablation device and methods for treating canker sores wherein a flexible RF electrode comprising a fluid delivery capability is inserted into the mouth; the RF electrode being placed against and/or surrounding the canker sore region; RF energy being applied for a predetermined time and under a controlled temperature to the canker sore tissue through the electrode to cause internal lesions; and therapeutic agent being delivered to heal and/or soothe the tissues thereafter.

Abstract: The present invention relates to an ash tray, and more particularly to an ash tray which can sanitarily control as well as automatically extinguish a smoking cigarette butt when it is put in the ash tray. In accordance with the present invention, the ash tray comprises a tube body in which cigarette butts are received and a porous member is equipped to the inward lower; a cap covering the upper end of the tube body; and an aroma tube coupled to the lower of the tube body in which an aromatic is equipped therein.

Abstract: The invention relates to a cigar holder provided with a detachable tip-cutting knife and a plug-removing member inside a cap of the holder. The knife has an inwardly extending portion and exterior portion hinged together and secured within a slot formed in the cap. The exterior portion lies flat in the recess formed in the cap, while the interior portion extends perpendicularly to the exterior portion, transversely to the cap opening. The plug-removing member is fixedly attached to the interior of the cap. It is adapted to pierce through the end of the cigar and remove a small portion of the cigar thereby forming a distinct channel for penetration of the tobacco smoke to the end of the cigar.

Abstract: In an automatic smoking machine for automatically attaching holders and tobacco rolls to smoking mouths of a smoking apparatus body by means of a robot apparatus, arranged in front of the smoking apparatus body, a holder tray supplying mechanism and a roll tray supplying mechanism are provided near an end portion of a rail of the robot apparatus. The holder tray supplying mechanism and the roll tray supplying mechanism hold a plurality of holder trays and roll trays, holding holders and tobacco rolls of the required numbers. The holder trays and roll trays are supplied one by one to an operation range of the robot body. As a result, a completely automatic operation can be continuously performed for a long period of time.

Abstract: The invention relates to a cigarette paper having a low total filler content, 20% by weight of the paper or less, a proportion of the filler being a filler capable of effecting visible sidestream smoke reduction. The basis weight of the paper is about 30 g m.sup.-2 or more.Smoking articles made with such papers provide a synergistic sidestream smoke component reduction when compared with control cigarettes. Papers according to the invention with the addition of various burn additives are also described.

Abstract: Long hair is curled by isolating each of the strands of hair that the subject desires to be curled; applying a curling agent to the strand at this point or later; placing a curling ribbon comprising a ribbon of fabric having three longitudinal stiffening wires adjacent the strand of hair and wrapping it around the strand to envelop the hair strand; securing the curling ribbon to the base of the strand; and then winding the ribbon-enveloped strand around a cylindrical curling mandrel. The mandrel is then withdrawn from within the coil without uncoiling the strand, and the process is repeated until all of the coils are made. After the setting or permanent waving agent has worked, the stiffened ribbon is removed and the hair is combed out. Alternatively, the ribbons may be allowed to remain in the hair as decoration.

Abstract: Aesthetically attractive, moisture activated, removable tattoo eyebrows for the cosmetic enhancement of a human face where eyebrows are usually present. The removable tattoo eyebrows are temporary, simulated eyebrows composed of a moisture activated transferable colorant material, preferably located on a sheet of plastic, cloth or paper. The removable tattoo eyebrows come in various designs, sizes, shapes and/or colors. The removable tattoo eyebrows can be quickly and easily transferred onto a human face, by placing the sheet containing the tattoo up against the eyebrow region of the face, and applying moisture from a damp cloth or sponge.

Abstract: A novel dental floss and gum massager made in the form of a strand, a tape or a sheet of polymeric material, said sheet having selectively positioned multiple sized holes for inserting though and holding by the fingers of the hands. The floss provides substantially very little constriction of blood flow surrounding the fingers as the floss is held taught and the peripheral edge of the floss is being manipulated and worked by the gripping, pulling, pushing, deforming, and guilding back and forth actions of the fingers during massaging of the gums and flossing of the teeth.

Abstract: A dental floss holder includes two holder elements. One of the holder elements has a pivot post attached thereto and the other holder element has an opening through which the pivot post projects. A cap is threadedly engaged with the pivot post and cooperates with a projection on one of the holder elements to clamp dental floss in position. Guide surfaces are provided on the cap and projection to guide the floss to the pivot post.

Abstract: The rinse washing of the present invention is completed in a short time by washing with a rinse washing liquid including a safe carbonic water or a carbonic acid gas after the manufacturing line is washed by an alkaline washing liquid when the manufacturing line is washed so that the present invention can reduce the water and energetic waste and can drive the manufacturing line efficiently.

Abstract: A portable clean-in-place apparatus for a batch processing system. The present invention provides a clean-in-place system on a movable frame adapted to move about a batch processing facility such as a dairy, brewery, pharmaceutical plant, or the like, and clean any or all portions of the batch processing system. Since the CIP system is provided on a movable frame, it can be moved without requiring fixed piping to and from the batch processing line, and since it is relatively small in dimension, it can fit through a standard size doorway to facilitate storage. Moreover, through appropriately sizing and orienting the equipment the apparatus is not only kept relatively small, but can be manufactured at a relatively low cost as well.

Abstract: A separator for separating curable material including liquid, especially residual concrete, residual mortar and the like, having a conveying screw which is disposed in a receiving trough. The rotary axle of the conveying screw extends transversely to the horizontal. The conveying screw increases in diameter, starting from its lower upstream end, and the section of the floor of the receiving trough, which is assigned to the enlarged region of the conveying screw, extends essentially horizontally. The screw has a second following section of decreasing diameter. The floor section at that the second screw section is inclined transversely to the horizontal. An additional screw conveyor may be attached beyond the second section. In an alternate embodiment, the screw has two cylindrical sections of different diameter. A transfer bucket wheel moves material between come of the screw sections.

Abstract: A sealed aqueous self cleaning rinse sump is provided for an aqueous spray washer. The rinse sump is pressurized by a weir restriction which directs return fluid into the rinse sump while simultaneously providing a pressure seal at the inlet of the rinse sump. The pressurized sump facilitates evaporation of the rinse fluid in order to separate contaminants out of the rinse fluid. The evaporated rinse fluid is then condensed and then returned to the rinse sump, thereby providing a consistently acceptable supply of clean rinse fluid.

Abstract: A method of supplying liquid is provided, including the steps of providing, at a first location, a cistern on land for liquid; providing, at a second location, a floating flexible container of liquid; and incrementally conveying liquid from the container to the cistern according to a demand determined according to the use of liquid in the cistern. The invention is directed to an apparatus for supplying liquid employing the on-land cistern and floating flexible container.

Abstract: A draw and return tube assembly having draw and return tubes welded to a flange at a first end and crossed over each other and welded together at a second end. The openings in the tubes opposite the flange are positioned a distance apart such that fuel returned to the tank through the return tube is not immediately redrawn into the draw tube. The ends of the tubes positioned opposite the flange have a cross sectional area that facilitates placement of the assembly through a flange receiving aperture in a fuel tank such that the assembly may be installed within the fuel tank after manufacturing thereof. Welding of the tubes at their ends opposite the fuel tank provides for a stable assembly without the use of a separate securing device.

Abstract: A plumbing tool for providing a passageway through a blockage, such as a test cap or other blockage, in a fluid-carrying line. During the rough-in plumbing phase of construction, the drain pipe leading from the plumbing system in a building to the city sewer main in the street is positively sealed off by a test cap welded in the pipe at the location of the clean-out. Pressurizing the rough-in plumbing to test the same can then proceed knowing that if any leaks occur, they are in the branch plumbing on the building side of the test cap and not at or in the test cap. Following successful completion of the initial test, the top-out plumbing is completed, leaving the test cap welded in the clean-out or drain pipe. After the roof vents are in, the top-out test of the plumbing system is made, again knowing that if the system shows any leaks, they are the result of a failure in the plumbing work and not a failure of the test cap.

Abstract: A fire transmission prevention system (10) for use in a drainage system (100) to prevent the transmission of smoke and fire through the drainage system. The system is intended to be used in drainage systems in multi-story structures. The system includes a firestop (16), couplings (14, 26 and 30) and an air vent (42). The firestop prevents fire and smoke from moving through the inner passageways (44D) of the pipes (12, 24, 28 and 72) of a drainage system by blocking the inner passageway of the pipes with a fire resistant plug (20). The couplings are mounted in the floor (102) of the structure and are constructed and secured in the floor such as to prevent fire and smoke from passing around the couplings between the couplings and the floor. The air vent is provided in a vent pipe (40) of the system above a trap (38 or 78) of the system.

Abstract: A pneumatic control apparatus and method controls gas pressure inside a tire (40) mounted on a wheel (32) which rotates about the centerline of an axle (30). A bleeder valve (28) is mounted on a body coaxially aligned with the axle centerline and is in fluid connection through passages (14, 18) in the billet and tubing (24) with a pneumatic fitting (23) on the tire. The bleeder valve allows gas inside the tire to be relieved to the atmosphere when the gas is above a set pressure. The coaxial alignment of the bleeder valve with the axle centerline permits the bleeder valve to relieve gas pressure unaffected by centrifugal forces.

Abstract: A coolant draining tool has a thermally insulating handle with a passageway therethrough. A curved drain tube is connected to the passageway and has an end portion with plurality of apertures for insertion into the cooling system of a motor vehicle. A hose coupling also is connected to the passageway for attaching the tool to a suction device to draw coolant from the cooling system.

Abstract: An integral water circulation device reliably provides rapid hot water at remote hot water faucets throughout a building by creating a low rate convective circulatory flow from the building water heater through a return line and the circulation device itself, without mixing hot and cold water within the system.

Abstract: A decorative pipe protector that can be positioned around a copper water supply pipe to both provide a decorative appearance and protect the copper water supply pipe from corrosion. The pipe protector includes a trim tube extending axially between a first end and a second end. The trim tube includes an inner surface having an inner diameter slightly larger than the outer diameter of the water supply pipe such that the trim tube can be slid onto the water supply pipe. The second end of the trim tube includes an attachment portion formed along its inner surface having a reduced diameter approximately equal to the outer diameter of the water supply pipe. The attachment portion of the trim tube is sweat soldered to the outer diameter of the water supply pipe to provide a liquid-tight seal between the two components. The second end of the trim tube includes external threads that receive a water shut-off valve.

Abstract: A valve including a housing, a rotatable body which can turn inside the housing, and two sealing rings made of sealing material, preferably polytetrafluoroethylene or a similar plastic. The sealing rings are arranged in an axially spaced manner in the housing and rest against the spherical outer surface of the rotatable body and provide a sealing function. The valve is designed with at least one sealing ring having a sealing lip which lies essentially tangential to an outer surface of the rotatable body at a contact surface, and a junction region of the sealing lip is located on a radial interior of the valve housing and is attached to a base body of the sealing ring. The valve is designed such that increased pressure causes the tangential contact surface of the sealing lip to be urged radially inwardly against the rotatable body so that the rotatable body is supported by the junction region in cases of high stress. In this way the rotatable body can be operated with reduced and reproducible torques.

Abstract: A pilot operator and a relief valve are provided in the same housing. The pilot-operating mechanism is contained partially within the main closure element of the valve and partially within the valve cap. Inlet pressure to the valve is communicated to the pilot via an access passage extending through the main closure element. In response to high-pressure flow from the inlet, a pilot piston moves a spacer rod through the passage and into engagement with a spring-loaded vent closure. The piston-induced movement of the rod opens the vent to relieve the pressure behind the main closure element, which in turn permits the main closure element to open and relieve the inlet pressure through the valve outlet. Opening of the main closure element terminates flow through the access passage. When the inlet pressure is sufficiently reduced, the pilot piston is unseated by the spring force re-opening the access passage to allow the pressure behind the main closure element to increase and close the main closure element.

Abstract: A modulating relief valve comprising a main relief valve and a dome pressure control system. The main relief valve has an inlet subject to system pressure, an outlet, a valve member normally sealing the inlet, a piston that rises and falls wit the valve member, and a dome adjacent to the piston, the dome having a dome pressure. The dome pressure control system is attached to the main relief valve.

Abstract: A premix dispensing valve assembly for a beverage dispenser includes a housing which includes an inlet to deliver premix fluid, a compensator within the housing for subjecting a controlled pressure drop on the premix fluid which includes an outlet communicating exterior to the housing, and a regulator within the housing for applying a variable dampening effect against high fluid pressures that accompany the premix fluid upon entry into the premix dispensing valve assembly. The regulator is cooperatively linked to the inlet of the housing and communicates with the compensator. As such, integrating the regulator with the compensator optimally allows for premix fluid to maintain a constant pressure and, thus, prevent complications arising from loss of carbonation. The premix dispensing valve assembly further includes a premix delivery channel within the housing for communicating premix fluid from the inlet of the housing to the regulator.

Abstract: The present invention relates to an air pressure regulator, characterized in that a regulator made of a piston body connected with a return spring is disposed at the top of a main body, wherein the high-pressure gas flowing from the primary pressure chamber to the secondary pressure chamber can be controlled by means that the secondary pressure inside of the closed space created by the piston body and the top of the main body exerts a stable and balanced effect on the piston body which raises or lowers the plug assembly, and that a stable output and a high accuracy of the secondary pressure can be ensured by means that the resilience of the return spring and the gas pressure creates a coordination effect without being influenced by the pressure difference created by the change of the internal pressure inside steel cylinder after bottling, so that the using life thereof can be extended and its safety can also be enhanced.

Abstract: The invention relates to a device for a fuel system, having a pressure chamber that communicates with a fuel connection and having a diaphragm that is installed at its outer peripheral region in a housing and partitions off the pressure chamber. A preassembled unit can be fastened, with the diaphragm built into the housing, on the basic body and the diaphragm can come to rest on a stop provided on the basic body. The device is intended in particular for regulating a pressure in a fuel system.

Abstract: An apparatus and a method for providing fluid communication between a process chamber and a dry pump without contamination problem are disclosed. The apparatus utilizes a conduit that has at least one gate valve installed therein for opening or closing the conduit and a T-shaped cold trap to collect large size contaminating particles. The present invention apparatus is effective in preventing particle contamination to the process chamber by a siphoning or backsteam effect when a dry pump failure occurs. While the present invention apparatus and method may be used in any deposition process which produces reaction by-products, or contaminating particles, it is particularly suitable for use in a TEOS oxide deposition process.

Abstract: A gas delivery system comprises a gate valve that can be connected between a turbo pump and a process chamber. The gate valve includes a valve body, a valve seat and a housing constructed to support the valve seat, wherein (a) the valve body is secured within the housing so as to move relative to the valve seat between an opened position and a closed position, and (b) the housing is provided with a gas passageway connected to each of the spaces on opposite sides of the valve body when the valve body is in the closed position. A plurality of valves are mounted to the housing of the gate valve and arranged so as to control the flow of gas through the passageway so that in operation the chamber and turbo pump each can be pumped down through the gas passageway with a second pump connected to one of the valves, and gas can be transferred and the flow controlled through the passageway bypassing the valve body when the valve body is in the closed position.

Abstract: A solenoid assembly for an automatic transmission of a motor vehicle. The solenoid assembly includes a housing, a valve, an armature and an electromagnetic device. The valve is mounted within the housing. The valve is operative in a vented state and a non-vented state and includes a plunger and ball combination movable between a first position for establishing the vented state and a second position for establishing the non-vented state. The armature is associated with the valve and is movable in response to the presence and absence of a magnetic field for selectively moving the plunger and ball combination between the first and second positions. The electromagnetic device is operative for creating the magnetic field. The electromagnetic device includes a core and an energizable coil. The core has an upwardly extending outer post with a generally rectangular cross section in a horizontal plane. The energizable coil defines an opening for receiving the first upwardly extending outer post.

Abstract: A high flow low spill quick coupling valve assembly is used to connect to pressurized, large diameter fluid lines. The valve assembly includes a female coupling and a male coupling, each of which defines a fluid passageway. The female coupling fluid passageway is normally closed by a female coupling valve. The female coupling valve is normally biased into a close position by a female coupling spring which is isolated from the female coupling fluid passageway. The male coupling fluid passageway is normally closed by a male coupling valve. The male coupling valve is normally biased into a close position by a male coupling spring which is isolated from the male coupling fluid passageway. Both male and female coupling valves are fluid pressure balanced to minimize the connecting force and opening force. The male coupling is inserted into the female coupling and is engaged with the female coupling to open the fluid passageways.

Abstract: The connector system comprises an upstream tubular body (1) capable of being connected to a pressurized-fluid line and in which there is placed a first shutter (18) bearing against a seat (6) under the action of a spring (20) upstream of the shutter. A downstream tubular body (2), that can be plugged into the upstream tubular body (1) and is capable of being connected to a line receiving the pressurized fluid, contains a second shutter (49) bearing against a seat (38) under the action of a spring (51) downstream of this shutter and of spring force equal to or less than that of the spring (20). A push-rod (24) and a tubular wall (25) which are fixed to the first shutter (18) downstream thereof interact with a push-rod (55) fixed to the second shutter (49) upstream thereof and with an upstream edge (57) of the downstream tubular body (2). The upstream tubular body (1) is mounted in a socket (29) provided with a counterbore (31) and with a catching groove (32).

Abstract: A pulsator comprises a first circuit having a first outlet (2) and a second outlet (3), connected alternatively to a first pressure level and a second pressure level, respectively. Furthermore, the pulsator comprises a second circuit, which comprises a first inlet (17a, 17b) connected to the first pressure level, a second inlet (18a, 18b) connected to the second pressure level, and valve members (19a, 19b) for its adjustment by a short connection of a control inlet (26a, 26b) of the valve members to the second pressure level between a first stable position at which the first inlet is connected to a first chamber (10) at the same time as the second inlet is connected to a second chamber (11) or a second stable position at which the first inlet (17b) is connected to the second chamber (11) at the same time as the second inlet (18a) is connected to the first chamber (10).

Abstract: A valve device includes a housing having two inlets and two outlets. A valve stem is rotatably received in the housing and includes an annular swelling formed between two peripheral chambers which are communicated with the outlets of the housing. The valve stem has an aperture and a passage communicating the inlets with the peripheral chambers respectively for allowing the water from the different inlets to flow out through the respective outlets directly without being mixed within the housing and the valve stem.

Abstract: The present invention provides a ball cock for a railway vehicle which comprises a main body possessing a primary-side opening and a secondary-side opening which face one another and an air exhaust aperture which is formed between these openings. Such ball cock further incudes a ball-shaped valve body which is rotatably provided inside such main body and in which there is formed a communication aperture which connects the primary side opening and the secondary-side opening and a side aperture which, consequent to its rotation, connects the air exhaust aperture and either the primary-side or secondary-side opening. There is formed in the main body's air exhaust aperture a pipe connection to which can be connected a restrictor. In another embodiment an extension pipe is connected to such pipe connection in such air exhaust aperture.

Abstract: A control valve which is useful for controlling devices without the use of direct electrical power. The control valve is configured such that it allows for the control of flowable media, such as water, hydraulic fluids, and it can also be used with gases, including air, and the like.

Abstract: A high energy loss fluid control device includes a plurality of annularly-shaped discs stacked one upon another and a reciprocal plug in slidable contact with the discs. The discs form a plurality of flow passageways extending between an inlet and an outlet located at the inner and outer peripheries of the discs. Each of the flow passageways has a plurality of sections connected with right-angle turns. A first one of the sections is radially extending toward the inlet to cause fluid to act upon itself and expend energy by turbulent interaction. Immediately downstream of the first section, a second one of the sections is radially extending toward the outlet. The second section is generally straight and of a length adequate to regain control of fluid velocity by true frictional losses. The passageways can be formed by stacks of discs that cooperate to fully define intermediate passageways or by alternating flow-path discs and separator discs that cooperate to form the passageways.