Abstract: An atomizing apparatus comprises a body having a chamber into which liquid is supplied. A nozzle member is secured to the body to define a front vibrating member of said of the chamber, the nozzle member having at least one nozzle opening. A capacitive piezoelectric transducer is secured to the nozzle member for producing pressure rises in the liquid to cause the portion of the liquid in proximity to the nozzle opening to be ejected therethrough to the outside. The piezoelectric transducer is connected to an inductance element to form a resonant circuit. An amplifier is connected with the resonant circuit to form a self-oscillating loop to amplify the signal in the loop to sustain oscillation at a frequency variable as a function of the temperature-dependent capacitance of the piezoelectric transducer.

Abstract: An isolator for electrically isolating an electrostatically charged, electrically conductive coating material supply line from a grounded source of conductive coating material while continuously transferring coating material from the source to the supply line. The isolator includes a receptacle for a charged coating material reservoir and an insulative housing surrounding the charged coating material receptacle. The coating material in the receptacle is fed through an outlet to the supply line for an electrostatic coating device, which is electrostatically charged. Due to the conductive nature of the coating material, the electrostatic potential at the coating device is coupled through the coating material, and the reservoir of coating material in the receptacle is likewise electrostatically charged. The coating material from the grounded coating material source is coupled to a grounded nozzle assembly in a housing which is positioned above the charged coating material receptacle.

Abstract: A window washer comprises a washer liquid jet nozzle provided under a windshield glass of a vehicle so as to be directed thereto for periodically deflecting the jetting direction of the washer liquid horizontally by the fluidic self-oscillating operation thereof, a pump provided in a washer liquid passage connecting the jet nozzle to a washer liquid tank for pressurizing the washer liquid and sending the pressurized washer liquid, a driving motor for driving the pump and a motor control circuit for applying a square pulse shaped voltage to the motor. The motor control circuit periodically operates the pump so that the discharge pressure thereof periodically changes. Consequently, the jetting direction of the washer liquid jetted from the jet nozzle is periodically deflected horizontally and vertically.

Abstract: A device generates pulsed liquid jets through a cumulative nozzle at high repetition rates by using a controlled oscillatory motion of the nozzle assembly coupled with the inertia of the water package and a piston to effectively evacuate the nozzle prior to generation of each jet pulse. The cumulative nozzle can be of any form, such as exponential, hyperbolic, cissoid, etc. Forward motion of the nozzle assembly serves to empty the nozzle of liquid residual therein from the previously generated jet. That forward motion also positions the residual liquid, freshly added liquid and a liquid accelerating piston for the generation of the next subsequent pulse. At the end of the forward motion stroke, the liquid and accelerating piston are rapidly accelerated into the nozzle by means of a high pressure gas.

Abstract: Discrete volumes, or slugs, of liquid are accelerated to high velocities utilizing energy stored by compressing the liquid. Liquid is forced into a pressure vessel already filled with liquid to effect the compression. A slug of liquid is ejected from the pressure vessel into a cumulation nozzle by the energy stored in the compressed liquid when a valve is rapidly opened. The valve is opened when an opening force, generated by the compressed liquid, exceeds a closing bias. By repetitively introducing highly pressurized liquid into the pressure vessel, the valve automatically cycles to generate a series of pulsed liquid jets. Rapid opening of the valve is aided by an extension on the valve member which sealingly slides inside the passage of the cumulation nozzle to block release of liquid until the valve member accelerates sufficiently that the required opening rate is achieved as the extension clears the nozzle passage.

Abstract: A liquid spray nozzle especially designed to spray vaporizable liquid fire extinguishant onto an explosive fireball. A minor portion of the incoming liquid is used to develop transversely directed liquid pulses which act on the liquid mainstream to deflect the stream from one nozzle boundary wall to another boundary wall. The exit stream from the nozzle exhibits a transversely oscillating character for minimizing vacant spots in the spray pattern while achieving a relatively divergent spray cross section. The method of oscillating the mainstream uses a relatively small energy expenditure so that the mainstream has a relatively long spray penetration distance.

Abstract: A build-up spraying apparatus is disclosed which is capable of positionally adjusting the spreading rate of build-up metal powder on an article along the spreading direction to satisfactorily carry out partial or local build-up as well as uniform build-up as desired. The build-up spraying apparatus includes a fluid control device for spreading build-up metal powder having a pair of control gas injection nozzles formed at the both sides of the interior thereof and a control gas switching cycle setting means for supplying two systems of control gas to the fluid control device at a predetermined cycle to positionally control the spreading rate of build-up metal powder in the spreading direction. The apparatus also includes at least one heating burner body for heating build-up metal powder ejected from the fluid control device, the heating burner body being adapted to vary the amount of heat according to the difference in injection rate of build-up metal powder in the spreading direction.

Abstract: Fluid pulsation apparatus is disclosed which includes an elastomeric sleeve designed to expand circumferentially and longitudinally in response to internal fluid pressure. A fluid barrier in the form of a disk valve is located within the sleeve, and is biased closed by an expansion spring extending between the upstream end of the sleeve and the disk valve. A rigid housing surrounds the sleeve and restricts its circumferential expansion to a predetermined level. The apparatus can be made to produce either pulsing or continuous fluid flow by adjusting the flow rate of fluid downstream of the disk valve.

Abstract: To convert a conventional nonpulsating air/water mixer for a therapy tub, swimming pool, spa or the like to a pulsating mixer, an inexpensive pulsator fitting is used to replace the central eyeball portion of the mixer's outlet and mounting fitting. The pulsator fitting has at least one cross bar positioned to block the mixer's aerated water jet, and a small cylindrical rotor journaled on the cross bar. The rotor extends from the cross bar coaxially into the mixer body's outlet passage in the path of the aerated jet. The jet strikes a central portion of the upstream rotor end, travels through an angulated rotor passage, and exits the downstream rotor end at an angle relative to the rotor axis and at a point spaced apart from it, causing the rotor to spin. As the rotor spins, the exiting aerated jet rotates and is repetitively and intermittently blocked by the cross bar, thereby pulsing the jet.

Abstract: A method and apparatus for deslagging boilers and the like while steaming, wherein a quenching-type stream of water is first applied to the outer surface of the hot slag to induce the formation of fissures by embrittlement and contraction of the slag and thereafter while the fissures are still present the fissured surface of the slag is impacted by a high velocity pulsed jet which drives water into the fissures, whereby dislodging of the slag is aided by the expansive force of water which vaporizes in the fissures. A generally conventional blower is illustrated, equipped with dual liquid supply and projecting means, and pulsing mechanism for interrupting the flow of blowing medium to one of the projecting means, to create the pulsed jet.

Abstract: Process and apparatus for enhancing the erosive intensity of a high velocity liquid jet when the jet is impacted against a surface for cutting, cleaning, drilling or otherwise acting on the surface. A preferred method comprises the steps of forming a high velocity liquid jet, oscillating the velocity of the jet at a preferred Strouhal number, and impinging the pulsed jet against a solid surface to be eroded. Typically the liquid jet is pulsed by oscillating the velocity of the jet mechanically or by hydrodynamic and acoustic interactions. The invention may be applied to enhance cavitation erosion in a cavitating liquid jet, or to modulate the velocity of a liquid jet exiting in a gas, causing it to form into discrete slugs, thereby producing an intermittent percussive effect.

Abstract: The invention relates to a high-pressure injection system for delivering and atomizing liquids by means of ultrasonic energy and, more in particular, to a fuel injection system for diesel engines. Said system is operated in conjunction with electronic control means. The injection system comprises a housing defining a pumping chamber into which there extends the free end of an operating or pumping plunger adapted to be actuated by a vibrator. A slide valve is provided which extends through said pumping chamber and which is actuated by means of another vibrator. Together with a suction aperture and a discharge aperture, said slide valve defines a suction valve and a discharge valve, respectively, of the injection system. Under normal conditions, the vibrators associated with said plunger and said slide valve are operated in such a way that there exists a phase difference of 90.degree.

Abstract: A device operable from a primary supply of water under pressure, such as a domestic water supply, to be used with irrigation and sprinkler systems, that modulates the flow of water supplied to different outlets, herein called supply heads, periodically from a minimum to a maximum flow rate and also provides a means by which liquid fertilizer and insecticides and the like can be dispensed and applied evenly and safely over a surface without human contact. As contemplated by the invention, supply pressure from a primary water supply is transformed into rotational motion which in turn, operates a rotary valve creating a water effluent therefrom that varies in its flow rate in accordance with the cyclical periodic operation of said rotary valve. This water effluent is delivered to the supply heads of the irrigation or sprinkler system. The rotary valve may be disabled so as to permit nearly straight-through passage of the supply water.

Abstract: A method and apparatus for removing adherent deposits from high temperature surfaces such as the fire sides of the tubes of boilers while steaming is disclosed as employing a sootblower to project a moving pulsed jet of liquid against the deposits. The peak impact pressure of the jet is increased by pulsing means disclosed as of a fluidic or rotary type.

Abstract: Apparatus for impulse spraying. A float valve is disposed at the lowest end of a liquid/gas accumulator which is connected via a connecting pipe having the float valve interposed therein to a hollow member having a vertically divided space to the upper end of which an outflow pipe leading to a sprinkler is connected. A water distribution pipe leading from a water supplying conduit is attached to the lower end of the divided space. A selectively operated shut-off valve in the hollow member is interposed between the outflow pipe and the connecting pipe, the shut-off valve functioning to shut off the outflow pipe when the water pressure in the upper end of the divided space in the hollow member is lower than that in the lower end of such divided space, and to open the outflow pipe when the pressure in the upper end of the divided space exceeds the pressure in the lower end of the divided space.

Abstract: A system for supplying fuel to an atomization fuel oil burner nozzle from a fuel pump at a rate less than that rated for the nozzle for burning of less fuel while achieving good combustion. The fuel is delivered to the nozzle at a pulsing frequency which is dynamically matched to intermittent pressure pulses within the fuel pump to create resonant pressure peaks at the nozzle. The fuel pump creates a pressure pulse each time a tooth of one gear of the pump makes full penetration into the space between a pair of teeth of a coacting rotatable ring gear. Rotatable valving structure, including gear ports in the rotatable ring gear pulses fluid flow to the nozzle by alternately connecting a fluid outlet of the pump to either a pressure port within the pump at the time of a pressure pulse or to the fuel pump inlet with the pressure peak of the pulsed flow being phased together with said pressure pulse.

Abstract: Process and apparatus for enhancing the erosive intensity of a high velocity liquid jet when the jet is impacted against a surface for cutting, cleaning, drilling or otherwise acting on the surface. A preferred method comprises the steps of forming a high velocity liquid jet, oscillating the velocity of the jet at a preferred Strouhal number, and impinging the pulsed jet against a solid surface to be eroded. Typically the liquid jet is pulsed by oscillating the velocity of the jet mechanically or by hydrodynamic and acoustic interactions. The invention may be applied to enhance cavitation erosion in a cavitating liquid jet, or to modulate the velocity of a liquid jet exiting in a gas, causing it to form into discrete slugs, thereby producing an intermittent percussive effect.

Abstract: A hard compact material, such as rock, is broken by forcing a longish mass body of relatively incompressible fluid, such as water, against the material to be broken. The mass body is caused to impact the material at a momentum necessary for breaking the material. The momentum is generated by supplying the fluid to a storage chamber against the effect of a thrust load acting upon the fluid in the storage chamber. When a sufficient amount of fluid has been supplied the fluid in the storage chamber is forced toward the material to be broken by the effect of the thrust load.

Abstract: A method for removing sludge that may be deposited on a tubesheet of a steam generator comprises placement of fluid headers at the elevation of the sludge to be removed establishing a circumferential fluid stream at that elevation. A fluid lance is moved along the line between the headers emitting a pulsating fluid jet perpendicular to a line of movement of the fluid lance at an elevation substantially corresponding to the level of sludge deposits. The fluid jet forces the sludge to the periphery of the tubesheet where the sludge is entrained in and carried away by the circumferential fluid stream.

Abstract: A drill bit and a method for deep-hole drilling in which the drill bit has mechanical cutting means located on its lower cutting face for cutting a solid surface upon rotation of the bit and a plurality of cavitating liquid jet nozzles spaced around the face of the bit to assist in the drilling action, the nozzles being located so as to discharge a plurality of downwardly directed and concentric liquid jets that cavitate to fracture the surface to be drilled in a series of non-overlapping slots as the bit is rotated.

Abstract: A pulsating liquid jet gun, comprises, a housing which defines a cylindere having a small diameter portion defining a liquid chamber with an outer end having a discharge nozzle and an inner end which is connected to an intermediate diameter portion of a greater diameter than the smaller diameter portion and it, in turn, is connected at its opposite end to a large diameter portion. A free piston has a first portion which is movable in the intermediate diameter portion and a second portion of small diameter in the first portion which is movable in the small diameter portion of the bore in sealing engagement therewith. An ignition piston has a first portion which is movable in the large diameter portion and a second portion of a smaller diameter which is movable in the large diameter portion and into and out of this intermediate diameter portion.

Abstract: Apparatus and method for facilitating the washing of a person's hands to achieve surgical cleanliness in a simple, effective manner. A transparent hollow sphere has a pair of hand openings formed in it, with a pair of pulsating water jet spray heads mounted on the sphere to direct intersecting sprays of water onto a person's hands placed through the hand openings in the sphere. One spray head is mounted in substantially the same horizontal plane as the hand openings, and between them, and the other spray head is mounted in substantially the same vertical plane as the one spray head, about 60.degree. to 135.degree. around the circumference of the sphere with respect to the one spray head. By operating a foot pedal, water is delivered under pressure to the spray heads which pulse the water onto the person's hands, the water then draining through an opening in the bottom of the sphere to be sewered. A soap dispenser may be provided within the sphere.

Abstract: A hard compact material, such as rock, is broken by driving a longish mass body of relatively incompressible fluid, such as water, against the material to be broken. The mass body is caused to impact the material at a momentum required for breaking the material. The required momentum is obtained by adding the momentum of at least two fluid mass bodies. The longish mass body can be aligned with a drill hole by means of the drill bit and rod. The energy generator or fluid gun and the gun barrel can be made in separable units.

Abstract: A hard compact material, such as rock, is broken by forcing an elongated mass body of relatively incompressible fluid, such as water, against the material to be broken. The mass body is caused to impact the material at a momentum necessary for breaking the material. The momentum is generated by supplying the fluid to a storage chamber against the effect of a thrust load acting upon the fluid in the storage chamber. When a sufficient amount of fluid has been supplied the fluid in the storage chamber is forced toward the material to be broken by the effect of the thrust load.

Abstract: A thrust generator combining gas driving either directly or through a hydraulic fluid with gas or hydraulic fluid cocking in a compact, lightweight thrust generator suitable for repetitive operation. The thrust generator has control fluid triggering of the power stroke and a floating piston for separating hydraulic fluid and gas. The thrust generator of this invention is particularly suited for provision of an integrated thrust generator-high pressure pulsed water jet apparatus.

Abstract: Apparatus is provided for use in a residential shower stall and the like, wherein one or more sets of projected fluid streams are collided against the human body in dispersals having preselected shapes and movement or location functionally related to the height of the occupant in order to scour and cleanse the body of the bather. In an alternate embodiment, a system operating from city water pressure alone provides for a flip-flop spray pattern from a plurality of nozzles releasably attached to various points on the wall of the shower stall or the like.

Abstract: A method and apparatus for cutting rock materials has been devised in which a series of jets are produced by a nozzle assembly, the nozzle assembly being constructed and arranged to advance along the surface of the rock material and to form a channel or line of cut of predetermined width and depth therein. As the nozzle assembly makes each pass along the intended line of cut, the assembly is oscillated in a direction transversely of its path of travel along the intended line of cut in order to better erode the material, form a clearly defined channel with a minimum of interference which may otherwise result from spalling or collection of liquid in the channel.

Abstract: A high-pressure fluid jet valve assembly is disclosed utilizing a double-acting piston actuated by a spool valve to reversibly actuate the valve stem. The valve stem selectively gates high-pressure cutting fluid through a seat arrangement directly into an output expansion section. Directly coupled to the expansion section is a valve head holding a jewel holder used to shape the high-pressure fluid beam for cutting purposes. The valve seal, stem and seat arrangement are designed to prevent leaching of the stem by the effect of high-pressure water, yet allow the cycling time in the order of 25 milliseconds.

Abstract: A rinsing device for personal hygiene, particularly a mouth-washing device, operates as a liquid pulse generator. This is provided with a pressure-water passage which can be connected to a source of pressure water and an outlet to which a spray nozzle can be connected, preferably via a flexible tube. A rotary valve is included which can be set in rotation and is mounted between the pressure-water passage and the outlet. The rotating valve is adapted to close the outlet intermittently to produce a pulsating jet of liquid. A turbine is adapted to drive the rotary valve and is provided with at least one tangentially oriented jet opening at its periphery and which is in communication with the pressure-water passage.

Abstract: A selectively-controlled pulsating water shower head comprises a housing including a spray block formed with a central chamber having a first group of openings for outletting a continuous spray, and an annular chamber therearound having a second group of outlet openings. A plurality of freely movable members, in the form of curved segments, are drivable around the annular chamber by the water inletted into the housing for outletting the water through the second group of openings in the form of a pulsating spray. The shower head further includes a manually-controlled diverter having a displaceable stem assembly for selectively enabling either the continuous spray or the pulsating spray.

Abstract: A high pressure fluidic medium is passed through a multiplicity of concentrating nozzles. The nozzles are rigidly retained within a frame or housing which directs the high velocity fluid flow columns therefrom against the surface of the material to be cut so that the area of impingement for each column is spaced from the others. The nozzle housing assembly preferably is held fixed for each channel cut pass but can be oscillated in a direction normal to the material surface while being moved along a line spaced from but parallel to the surface of the material to be cut. The areas of impingement of the fluid flow columns from the nozzle are arranged to erode cutting lines or kerfs along the material parallel to each other so as to define a total cut slightly greater than the width of the nozzle housing assembly.

Abstract: A shower head includes a tubular body or housing defining a fluid passage which is connected by a plurality of angularly disposed parts directly to a corresponding plurality of fluid chambers. The chambers are defined by axially extending partitions formed as an integral part of the discharge end portion of the housing and are enclosed by a perforated cover member removably secured to the housing. A fluid driven turbine-type valve rotor is supported within the fluid passage by a center pin shaft and includes a projecting closure portion which has a rotating path adjacent the ports for successively closing the ports and momentarily restricting the flow of fluid from the fluid passage into the corresponding fluid chambers. When it is desired to discharge a steady spray, either the cover member is partially released from the housing to provide for fluid communication among the chambers or rotation of the valve rotor is stopped at a predetermined position.

Abstract: A pipe nipple for the discharge of a solid water jet, particularly from the center of the shower head of a shower bath, is provided with an external screw thread on its water entry end and with two insets of which one is fitted tightly into each of the pipe nipple ends. Each inset has a number of openings for the passage therethrough of the water and a central bore for the reception of one of the axle pins of a spinner rotatably mounted between the two insets. The spinner has one or more obliquely pitched blades of a radial cross section at least equal to the cross section of the water openings in the entry end inset.

Abstract: A pulsating shower head comprises a liquid chamber containing a spray block having an annular channel in which are disposed movable members in the form of rotatable balls and slidable segments driven by the force of the liquid to successively cover and uncover outlet openings formed in the annular channel to produce a pulsating effect on the liquid jets exiting from the spray block. The described shower head further includes additional outlet openings for producing non-pulsating liquid jets, and a manipulatable member for selectively connecting either the annular channel outlet openings to the liquid chamber in order to produce the pulsating liquid jets or to connect the additional outlet openings to the liquid chamber to produce non-pulsating liquid jets.BACKGROUND OF THE INVENTIONThe present invention relates to shower heads, and particularly to a pulsating type of shower head wherein a pulsating effect is produced on the liquid jets exiting from the head.A number of pulsating shower heads are known.

Abstract: A device intended for building up high pulse liquid pressures may find suitable application in the mining industry and can be advantageously used in constructions of hydro-power installations. The device comprises a cylinder accommodating a two-step piston having an accelerating actuator. The piston step of smaller diameter is positioned, during the piston stroke, within a high-pressure chamber communicating with a liquid supply source and fitted with an opening for the liquid discharge. The piston step of smaller diameter is provided with a rod having a widening at the free end thereof, while the high-pressure chamber has a constricted portion passing into a widening towards the opening for the liquid discharge. At the initial stage of the piston stroke, the widening of the rod overlaps the constricted portion of the chamber to lock the liquid within the chamber between the constricted portion thereof and the piston step of smaller diameter, whereby high pressure of the particular liquid is built up.

Abstract: A spray nozzle for a showerhead is controllable to deliver a pulsating spray or a continuous spray or a variable combination of the two. Water entering at the inlet of the nozzle is adjustably divided into two flow paths one of which leads to a group of spray outlets to provide a continuous spray and the other of which leads to a further group of spray outlets via a rotary valve to provide a pulsating spray. The rotary valve comprises a cylindrical valve chamber with a rotary valve member therein, the valve member having turbine blades so that in use water entering at the valve inlet drives the valve member in rotation, and pivoted flaps mounted on the valve member which in use are centrifugally urged against the cylindrical wall of the valve chamber, there to intermittently occlude the further group of spray outlets, which open from the cylindrical wall, and to provide the pulsation in the spray, without jamming the rotary valve member.

Abstract: In a fluid-flow pulsator, a housing has a chamber with an inlet and an outlet. Within the housing is a piston assembly having first and second pistons with the first having a working area less than that of the second. A valve associated with the assembly closes the outlet on movement of the assembly. The assembly is resiliently urged in a direction effecting closure of the outlet with the first and second pistons effectively being disposed in the chamber on opposite sides of the inlet. The introduced fluid pressure, the urging strength and the piston areas are correlated so as to produce pulses of fluid from the outlet in response to a supply of fluid to the inlet.

Abstract: A high pressure pulsed water jet apparatus and process operable in a vertical position especially suitable for automated pavement and rock fracture. The apparatus and process of this invention is used in combination with a thrust generator providing a substantially flat power stroke output thereby providing a pulsed water jet operating on the principle of pressure extrusion to generate repetitive water jet pulses of high velocity and at high repetitive frequency. The apparatus and process of this invention is especially suitable for providing an apparatus and process for fracturing pavement on a single self-contained vehicle which may be operated by a pre-programmed program means.

Abstract: A system for drying and/or transporting particulate material, including fluidizing the material by means of pulsed air flow in jets which oscillate parallel to the path of motion of a bed of the material in an assymetric sweeping fashion which applies a net transporting force in one sense or direction, or by applying such pulsed flow so that the net force in either sense is zero, to cause drying without transport. The system utilizes phase locked acoustic oscillators to provide sweeping jets of fluid moving in opposite directions for drying and in the same direction for transporting the particulate material. The fluid oscillators are fabricated from 2 groups of molded or extruded members with the members of each group being identical. Spacers are employed to position the parts whereby to provide the desired oscillator configuration.

Abstract: A water cannon adapted for controlling large crowds of unruly people in a highly effective, yet non-lethal fashion. The cannon can be mounted on an appropriate vehicle, such as an armored car, so as to make it mobile and its supporting system completely self-contained. The water cannon discharges a high velocity stream of water in a pulsing fashion. Each pulse forms a water projectile which is effective against human targets at ranges up to one hundred feet. The water can be treated with a variety of desired additives. The water cannon includes a cannon body on which is operatively mounted a nozzle for discharging the discrete coherent water projectiles. The discharge of the water projectiles is controlled by a main stage valve, which is in turn controlled by a pilot valve. A water supply reservoir and pump are provided for supplying water under pressure to the main stage valve.

Abstract: An adjustable shower head is defined so that in one operating state thereof, the discharge from the shower head, upon contact with the body of a user, produces a massage-like effect. The shower head includes a body which defines therein a cavity and which has a front face defining an opening therein. Means are coupled to a rear portion of the body to adapt the body to be connected to a source of water for flow of water from the source to the cavity. A nozzle is disposed in the cavity with a discharge end thereof mounted in alignment with the opening fo discharge of water from the cavity only through the nozzle. The nozzle has no moving parts and is arranged to produce a randomly directionally unstable discharge characteristic in water discharged therefrom during use of the shower head. Modulatng means are mounted to the body and are operable by a user of the shower head for modulating the effective force for water discharged by the nozzle.

Abstract: A liquid spray is characterized by a liquid jet which is cyclically deflected at a high frequency such that it breaks up into a fan-shaped spray pattern in which the fluid distribution and droplet size can be controlled. Jet deflection is accomplished with energy in the pressurized liquid itself. In a preferred embodiment, the spray is produced by a fluidic oscillator, of the type having a flow-reversing interaction region terminated by an outlet throat from which outlet walls diverge, configured to establish a static operating pressure at the upstream end of the interaction region which is positive relative to the pressure in the outlet region.

Abstract: A mining machine adapted to traverse a mine face comprises a rotary drum, which may be mounted transversely or forwardly of the machine body, carrying liquid orifices which are supplied with water under pressure so that each orifice produces a water jet of continuously varying pressure which is directed at the material being mined at least for some of the times when the jet pressure is at its maximum value. In operation, reciprocation between a number of pistons and respective bores, the bores being formed in the drum, is brought about as the drum rotates by an eccentric bearing with which the pistons coact. The drum may carry cutting picks to assist the water jet cutting.

Abstract: A shower head includes a tubular body or housing defining a fluid passage which is connected by a plurality of angularly disposed ports directly to a corresponding plurality of fluid chambers. The chambers are defined by axially extending partitions formed as an integral part of the discharge end portion of the housing and are enclosed by a perforated cover member removably secured to the housing. A fluid driven turbine-type valve rotor is supported within the fluid passage by a center pin shaft and includes a projecting closure portion which has a rotating path adjacent the ports for successively closing the ports and momentarily restricting the flow of fluid from the fluid passage into the corresponding fluid chambers. When it is desired to discharge a steady spray, either the cover member is partially released from the housing to provide for fluid communication among the chambers or rotation of the valve rotor is stopped at a predetermined position.

Abstract: Fluid regulating devices comprise a tube having an axial passageway adapted to be connected to a fluid supply pipe, the tube being formed with a radial opening communicating with the axial passageway, and a ring surrounding the tube at the radial opening thereof, the ring having an inner diameter larger than the outer diameter of the tube such as to be set into vibratory movement towards and away from the radial opening thereof to regulate the flow of fluid therethrough. Described are a number of variations for different applications.

Abstract: A shower head is provided which can, alternatively, provide a fine, steady stream of shower water or a coarser, pulsating stream of shower water to produce a massaging effect. All of the water stream is, initially, pulsed, but the pulsation is removed when a steady stream is desired.The incoming water enters the spinner of a Hero's engine axially; it causes rotation of the engine spinner as it leaves the tangentially directed exit spouts of the engine. The water then enters a chamber having a circular outlet cover plate carrying small peripheral holes and larger, more centrally located holes inside the periphery.A rotatable dial plate is positioned between the circular outer cover plate and the plenum chamber. This plate has holes in it which can be aligned with the large inner massaging holes, with channels leading to the outer peripheral holes, or at a position in between. The position of the dial plate is controlled by an associated control arm.

Abstract: A regulated fluid tap particularly useful as water trickler nozzle includes an inlet tube, a housing enclosing the tube outlet, and a regulating member disposed within the housing and set into vibratory movement, by the flow of the fluid, toward and away from the tube outlet to close and open the outlet. The flow of the fluid is thereby regulated to a slow trickle without the need for a circuitous path or small openings which can be easily clogged. Two embodiments are described: in one, the regulating member is of ring-shape and vibrates radially of the tube; in the other, the regulating member is of disc-shape and vibrates axially of the tube.BACKGROUND OF THE INVENTIONThe present invention relates to a regulated tap for fluid conduits such as water pipes, and particularly to a tap useful as a water trickler nozzle.There are many applications for regulated taps for fluid conduits.

Abstract: Apparatus including the combination of a nozzle adapted for connection to a source of fluid under pressure and having a port for discharging a jet fluid axially of the port and a wall mounted in spaced relation to the port and generally across its axis and having an opening dimensioned for passage therethrough of the jet when the port and wall opening are in registration, and wherein the wall and nozzle are mounted for relative displacement for moving the port and opening into and out of registration; and manually engageable means for effecting such relative displacement. Additionally a housing is provided around the nozzle to form a relatively enlarged, reduced pressure, fluid collection chamber for fluid deflected by the wall in the misaligned "shutoff" position of the device.