Tortuous path

A vent structure for reliable long term operation at high temperatures is fabricated by annealing a tubing of predetermined length and size, filling the tubing with fine alumina particles, flattening and coiling and pressing an upper portion of the tubing at predetermined pressures, annealing the formed...     

A water emitter is provided for drip irrigation systems which can be modified at the irrigation site to accommodate variations in pressure in differing areas in the specific configuration or layout of system used, and the typography of the land to be irrigated. The emitter includes a flexible, collapsible...     

A pipe system for conveying fluids having a straight pipe section with a Reynolds number exceeding 2200 by reason of the critical values of interior surface roughness of the pipe and of turbulence at the pipe section inlet, such values being defined, respectively, by the formulae: (e/d) R .ltoreq. 200...     

A whirlpool jet for bathtubs having a water outlet extending through a circular opening in the bathtub wall and threadedly connected to a housing. The outlet has an annular radial flange abutting against the inside of the bathtub wall. The flange has a pair of diametrically spaced openings for use in...     

Discharge pressure limiting and noise-suppressing nozzle for air-ejectors. An internal surface distributing air from an internal central pressure-reducing orifice to radially located multi-jet parts is dished in the direction of overall air flow through nozzle. Back-turbulence limits excessive line pressure...     

A vent structure for reliable long term operation at high temperatures is fabricated by annealing a tubing of predetermined length and size, uniformly filling a normally upper portion of the tubing with a predetermined thickness layer of fine alumina particles, flattening and doubly folding and pressing...     

A valve having stacked disks with alternate circular grooves in the faces thereof to provide a high pressure drop surface in fluid flow transverse to said grooves and ridges. The disks are circular in shape with a circular center opening to provide a central fluid opening when the disks are stacked with...     

A heat exchanger that includes a heat exchange tube for flow of a liquid therethrough and including a turbulator on the interior of the tube at the inner wall surface thereof with the turbulator comprising a strip of expanded metal arranged in a helix and having spacing projections at the opposite side...     

A fluid resistance device being part of a fluid system and having high resistance, fluid energy absorbing passages along the interface between a ringtype member and a cylindrical male insert, and wherein said passages consist of a number of teeth-like baffles which are off-set from each other and which...     

A fluid flow control device is disclosed for maintaining a substantially constant volumetric flow rate in either direction independent of the applied pressure above a predetermined pressure level. The device has a generally cylindrical shape, may be symmetrical about a radial plane of symmetry and comprises...     

The valve described herein, includes a hollow valve body having inlet and outlet passageways extending into the body and a valve member positioned in the body for movement between open and closed positions. A plurality of orifice members are disposed between the inlet and the outlet so that fluid flowing...     

A flow control valve having a valve chamber which is adapted to receive fluid under pressure and which comprises a valve member having a surface with a groove therein and an outlet passage terminating at one end in a port in the groove. A resilient element is provided in the valve chamber in confronting...     

Irrigation drip tubing including an outer tubular member having an inside wall and an outside wall and an inner tubular member having a repetitious pattern of inlet apertures, crests and roots. The crests engage the inside wall of an outer tubular member in a liquid-tight manner. The roots form conduits...     

A static mold vent comprising a bore extending through a mold wall with a cylindrical inner portion opening at a cavity surface in the mold and a threaded outer portion opening at an exterior surface of the mold, a plug with a threaded outer portion engaged in the threaded portion of the bore and cylindrical...     

A sensor apparatus for determining fluid levels and pressures in a fluid-containing vessel wherein the sensor apparatus comprises a mounting member having a fluid passageway positioned therein; a pressure sensor in operative contact with one end of the mounting member and a pressure fluctuation dampening...     

A flume mixer is provided which employs mixing cells; the mixing cells comprise first and second generally horizontally disposed flow directing elements extending between flume side walls. The mixing elements are generally in angular relationship to each other and the longitudinal axis of the flume....     

A pressure reducing device for fluids which comprises an elongated body the peripheral surface of which is provided with grooves along its length. The body is tightly surrounded by a sheath. The length of the body is divided into a plurality of peripheral chambers in which axially extending baffles force...     

A fluid flow control valve which includes a body formed to define a chamber having inlet, outlet and actuating ports for supplying and receiving fluid to and from external hydraulic machinery to be actuated and including a valve spool formed with several lands and slidably arranged in the chamber for...     

A fluid resistance device being part of a fluid system and having high resistance, fluid energy absorbing passages within the plane surfaces of equally shaped circular plates which overlap each other in a prearranged pattern, each plate consisting of equally spaced circular segments, one half of which...     

A fluid circulating apparatus includes a housing which forms a part of an aggregate, for instance a heat exchanger. The housing has an inlet portion for admission of fluid into a first compartment and an outlet port which communicates with a pressure chamber of the housing. One wall of the housing has...     

The present invention relates to an improvement of the irrigation device described in my earlier U.S. Pat. No. 3,887,138. There I have described an elongated continuous hollow hose for conveying fluid through the interior thereof and formed with a helical fluid flow passage of predetermined pitch between...     

A valve having stacked disks with alternate circular grooves in the faces thereof to provide a high pressure drop surface in fluid flow transverse to said grooves and ridges. The disks are circular in shape with a circular center opening to provide a central fluid opening when the disks are stacked with...     

An emitter unit comprises a pair of casing components and a coupling for coupling said components together via an interposed strip that extends beyond the components on all sides and is adapted to form a closed conduit such that one component is inside the conduit and one is outside. At least one of...     

An oiler assembly is disclosed for feeding a relatively precise and consistent lubrication. The assembly includes a supply of the lubricant and a flow line placing the supply in communication with the lubrication point. A metering valve is interposed in the flow line and generally comprises a body having...     

An orificial restrictor for use in a ballasting system for an underwater icle utilizing a plurality of multi-holed orifice plates set in series within a casing. A hollow cylinder is slidably positioned within the casing and carries fluid supplied through an inlet in the case. A spring biases the cylinder...     

A more compact high energy loss device is provided having a series of uniquely formed multiturn labyrinth assemblies which reduce the pressure of a fluid flowing therethrough. The inlet of the labyrinth assemblies is formed according to a substantially circular configuration to have a predetermined inlet...     

A delay valve comprising a housing including a side wall and opposed end walls and a plug in the housing cooperating with the side wall to define a first and second chamber. A check valve is provided in the plug permitting flow of air in one direction such that air may flow freely from the second through...     

A noise suppressor for reducing noise resulting from venting of large volumes of high pressure gas. A first pipe member has an open first end, adapted for attachment to a high pressure gas outlet, and a closed second end. A plurality of second pipe members are attached to the first pipe member sidewall...     

A more compact high energy loss device is provided having a series of uniquely formed multiturn labyrinth assemblies which reduce the pressure of a fluid flowing therethrough. The inlet of the labyrinth assemblies is formed according to a substantially circular configuration to have a predetermined inlet...     

A fluid flow restrictor is described having a long path length capable of sorbing energy with less noise generation than that normally encountered with conventional fluid flow restrictors of short path lengths. The restrictor is adapted for attachment between two adjacent lengths of a pipeline, three...     

Described herein are fluid flow control valve trims suitable for use in a valve in which high fluid pressure drops are to be sustained without excessive noise generation or cavitation damage to valve members. The valve trim is constructed of two or more annular cages surrounding a central passageway,...     

A device for distributing fluid from an inlet to an outlet, in which a series of plates in stack configuration provides a continuously subdividing fluid flow path between the inlet and the outlet such that the fluid distribution at the outlet is over a substantially greater area than the fluid at the...     

A seal for flow passages has directional characteristics allowing gases or fluids to flow freely in one direction while restricting the flow in the opposite direction. The seal includes a flow diverter cone (or other inclined surface) which is spacedly mounted on a flow inverter cone (or other inclined...     

A more compact high energy loss device is provided having a series of uniquely formed multiturn labyrinth assemblies which reduce the pressure of a fluid flowing therethrough. The inlet of the labyrinth assemblies is formed according to a substantially circular configuration to have a predetermined inlet...     

An atomizing device for mixing or atomizing fluids without moving parts and comprising, in combination, a hollow tube which has a substantially cylindrical inner wall and a core member situated within the tube in substantial coaxial relationship with and spaced from the inner wall. The surface of the...     

A plurality of identical cell rupture valve assemblies are connected in tandem to produce increased homogenization effectiveness.

A valve comprises a tube having an inner wall surface inwardly stepped to provide a ribbed peripheral seat in a plane perpendicular to the axis of the tube and between inlet and outlet chambers bounded by tube lengths of relatively greater and relatively smaller cross-sections respectively. A washer...     

A fill valve for controlling liquid level in a toilet tank or other tank includes a housing with an inlet, an outlet, a valve, and a level sensing mechanism for opening the valve to permit flow when the liquid level is below a predetermined value. A flow impedance path including a compact array of many...     

A serpentine or parallely formed conduit is fixed within a support and is further joined on its exterior surfaces by a plurality of fins. The fins have a plurality of louvered cups which define openings in the fins so that air or other heat transfer medium will pass through the fins and be turbulated...     

A pressure accumulator for a hydraulic system includes a rigid container whose cavity contains a partition of pliable, resilient material which seals one compartment adjacent the bottom wall of the container from another compartment containing a gas under a pressure sufficient for expanding the partition...     

An apparatus for mixing materials having no moving parts in which a plurality of mixing elements are arranged in parallel around the inner periphery of a conduit. The elements are held in place around the periphery by a support member which is positioned along the longitudinal axis of the conduit. Substantial...     

The heat exchanger is constructed with a plurality of fittings which are disposed in the flow passage. Each fitting is constructed of at least two groups of webs with the webs of each group disposed in spaced parallel relation and in angular relation to the axis of the flow passage. Also, each group...     

An emitter unit comprises a wall defining an elongated flowpath, an inlet and an outlet for the unit, a connector for coupling the unit to an irrigation installation, two sets of oppositely directed baffles projecting into the flowpath, characterized in that each baffle terminates in a baffle tip of...     

An exhaust brake modulating control system is provided for an internal combustion engine having a turbo-charger and source of pressurized fluid. The system includes a double-acting piston-cylinder assembly having one cylinder end communicating with the engine exhaust manifold and an opposite end separated...     

A turbine assembly is provided for use on an internal combustion engine such as a diesel engine having conventional intake and exhaust manifolds. The assembly includes a hollow section which has an inlet communicating with the exhaust manifold, and an outlet communicating with an exhaust gas entry into...     

The present invention discloses a sprinkler head for use in drip irrigation systems. Irrigation fluid entering an inlet is directed through a path comprising a plurality of pressure dropping chambers before emerging through irrigation tubings connected to outlet openings from where the irrigation fluid...     

Flow restricting devices are provided for individual tubes connected into bores in a tube bank and are each formed with a convoluted passage of restricted cross-sectional area and extended length to produce a required flow restriction.

A tubular body on whose external surface are formed a series of periodically wavy recesses of specific depth and angle, said recesses becoming the corresponding series of similarly wavy projections and thereby improving the mixed state or heat conduction efficiency of a fluid flowing therein.

A fluid choke for controlling fluid flow, such as condensate draining from a high pressure steam line, that does not require the use of any separate filters and constructed entirely from a section of bar stock including a reduced diameter inlet section having a small orifice extending axially therethrough...     

A tubular body on whose external surface are formed a series of periodically wavy recesses of specific depth and angle, said recesses becoming the corresponding series of similarly wavy projections and thereby improving the mixed state or heat conduction efficiency of a fluid flowing therein.

The invention relates to a watering head for the drop feed irrigation mainly of orchards with impermeable soil. It consists of two main parts, i.e. the body connected to the watering pipeline, and the replaceable feeder unit mounted on the body. Occasionally the body and the feeder unit are constructed...     

Apparatus for imparting spiral motion to material flowing in a tube comprising a relatively short spiral member anchored to prevent movement relative to the tube. The spiral member has a maximum length shorter than the tube and is capable of imparting spiral motion to the entire amount of material flowing...     

A cylindrical chamber accommodates an axially movable rod having a helically grooved portion of the periphery, to which a starting flow of liquid is fed via an inlet passage of said cylindrical chamber, outlet passages for discharging separate streams of liquid after splitting of the initial flow to...     

A fluid control valve which avoids wear, cavitation, and high noise level operation and yet is substantially nonclogging. The valve includes a valve nozzle means having at least one preloaded member biased so as to close the valve nozzle means below a preselected incoming fluid pressure. Incoming fluid...     

A relief valve (10) having both spring biasing means (116) and air pressure biasing means (114). The spring biasing means (116) includes a plurality of spring washers (132) acting between the valve body (12) and a valve member (74). The air biasing means (116) includes an air cylinder defined by an intermediate...     

An interfacial surface generator for mixing fluids is disclosed that has a plurality of mixing elements positioned in a tubular housing in end-to-end relationship. Each element has a cavity on its upstream end and a protuberance on the downstream end. The protuberance on each element extends into the...     

Within a cylindrical barrel to be secured to the water faucet are a basket surrounding a mixing chamber, a diffuser overlying the mixing chamber and forming a diffusing chamber, having peripheral openings for flow of water to the mixing chamber, and a flow restrictor disc having a control opening for...     

For use in drip irrigation, a tube of flexible material such as plastic is comprised of an elongated strip having first and second side edges. The strip is rolled on itself with the edges parallel and with the interior of one side edge secured longitudinally to the exterior of the strip well spaced from...     

A homogenizing apparatus comprises a casing having an internal cylindrical surface defining a bore having an open end. A portion of the surface is threaded and the casing defines an inlet portion terminating in an annular chamber along the threaded portion substantially centered between the ends thereof....     

A sound suppressing fluid handling device wherein a relatively high pressure fluid is conducted through a substantial pressure drop, relatively noiselessly, by passage of the fluid through a myriad of tortuous energy dissipating passages formed between adjacent turns of and opening through the ends of...     

A lamellate type low noise fluid resistance device comprising a stack of identical segmented ring-shaped plates having alternate sectional openings which, when circularly displaced with one another, form narrow horizontal fluid passages between the inner and outer diameters of said plates; said stack...     

A distribution system for conducting a mixture of oil droplets and air to surfaces to be lubricated, comprising a main inward flow duct (1) connected to a source of oil droplets dispersed in air, and at least one distributor unit (2) connected to said inlet duct; said distributor unit including a baffle...     

This invention relates to improvements in dispensing guns and more particularly to guns of the type provided with dual conduits into which plural streams of two parts of adhesives can be fed and later intimately mixed in the detachable nozzle at the end of the gun immediately prior to application of...     

A cylindrical valve trim has holes in the valve trim wall that provide a fluid flow path through the valve. The holes pass through the wall at predetermined angles to create a plurality of counter-rotating vortices with parallel axes normal to the wall.

A fluid flow restrictor for spanning a passage of a body to minimize noise and cavitation in a high pressure fluid flowing through the passage and undergoing a substantial pressure drop in passing through the restrictor. The device comprises at least one tier of fixed perforated tubelets defining a myriad...     

The improved flow control valve includes a hollow valve body having an inlet and an outlet and a valve member movable therein to control the flow through the valve. The valve also includes an orifice assembly located in the valve body encircling the valve member. The orifice assembly includes a perforated...     

A fluid flow restrictor device, capable of producing a precise rate of fluid flow, comprises a closed spiral coil of wire contacted on at least one face by a member so as to define therewith a spiral passageway of precise cross-section, there being a fluid inlet at one end of the spiral passageway and...     

Nuclear reactor core safety rod release apparatus comprises a control rod having a detent notch in the form of an annular peripheral recess at its upper end, a control rod support tube for raising and lowering the control rod under normal conditions, latches pivotally mounted on the control support tube...     

A pressure letdown valve includes a housing with a bore passing therethrough which may be tapered and adaptable of receiving internally a coaxial central tube with tapered outside diameter and also two concentric sets of circular baffles frictionally secured in place within the tapers in an interjacent...     

Improvements in a flow restrictor for use in a flowmeter measuring a flow rate according to the pressure drop caused by laminar flow, utilizing the fact that the pressure drop is proportional to the flow rate. The flow restrictor comprises a cylindrical member, and a housing having a fluid inlet and...     

A laminar flow element for mounting inside a fluid flow channel, which flow element is built up from flat disks which are provided with grooves running between an eccentrically made inlet opening and an outlet opening. The outer disks of a package do not have grooves and only comprise an inlet opening...     

A flow control valve having a flow-dividing cage surrounding its plug. The cage includes stacked plates spaced by dependent legs and annular screens in the spaces between adjacent plates.

Disclosed is a liquid mixer having a multiplicity of slotted orifice plates spaced apart along the flow path within a chamber. Liquid passes through and exits from the slots at a 30-60 degree angle to the exit face of the orifice plates, thereby inducing turbulence which causes good mixing. Preferably...     

A flow restrictor to minimize noise and cavitation, or other adverse effects, in regulating the flow of a high pressure fluid. The restrictor defines a myriad of tortuous, dissimilar, intertwined, and commingled energy dissipating chambered flow paths edgewise through a stack of sheets of perforated...     

A drip irrigation emitter where turbulent flow and angled ribs in a tortuous channel reduce fluid pressure, providing for minimal variations in outlet flow rate from the emitter, irrespective of emitter inlet pressure.

A pneumatic timer has a cylinder (3) containing a piston (4), which is movable upwards and downwards to vary the volume of a chamber (11) below the piston by means of a screw-threaded spindle (7) and a screw-threaded sleeve (9) which is rotatable by a knob (10). Air is supplied to the chamber (11) via...     

A circuitous path flow restrictor (10) having no moving parts includes a fluid director member (16) having a core (24) and a plurality of fins (26) extending from the core and defining alternately axially offset notches (50,52). The fluid director member is encircled by a containment member (54) such...     

Systems for mixing gaseous medium streams at different temperatures are for changing the direction of flow of a stream which alleviate the effect of pressure losses. A plurality of hollow airfoil shaped vanes are positioned within a first gaseous stream, and the second stream is conveyed through the...     

A shock absorber for providing a linear decelerating force to a machine part by means of a piston which forces fluid through a series of orifices formed by co-action of holes in the piston cylinder and holes formed in a sleeve forming a metering tube which fits over the cylinder. An infinite number of...     

A cooling plate for insertion into the lining of a blast furnace or the like wherein the plate is adapted to have a chamber with cooling water channels for the passage of cooling water therethrough and having a unique baffle means for dividing the flow of water to increase the velocity of flow and avoid...     

Apparatus for ensuring laminar flow through the main (non-measuring) branch of a split flow path flowmeter comprising a mass flow controller made of juxtaposed annular plates having interconnecting radial slots. The resulting flow passageways have proper length-to-hydraulic radius ratios to ensure that...     

A motionless mixing device includes a conduit having a mixing element therein which is formed by deforming flat stock material. The mixing element includes two substantially identical segments or halves that each having a sinuous cross-section between opposite ends and are interconnected along the center...     

A motionless mixer has a tubular casing, a fluid inlet and a fluid outlet axially spaced from one another in the casing and defining a flow direction of the fluid, a plurality of discs each having throughgoing apertures for allowing passage of the fluid. The discs have a periphery conforming to the inner...     

The invention pertains to a linear in-line mixing system wherein a plurality of tubular elements removably located within a conduit in end-to-end relationship define a passage through which materials to be mixed flow. The elements each contain a pair of helical vanes spiralled in opposite directions...     

A multichamber drip irrigation hose for distributing water and the like. A hose having a larger primary tube and a smaller secondary tube joined at a common wall, with passages in the common wall for flow from the primary tube to the secondary tube, and with passages in the secondary tube for flow from...     

A gas-distributing device for use in a gas passage which flares like a diffuser, particularly a passage leading to an electrostatic precipitator, formed by a set of components consisting of perforated sheet metal panels, carrying and connecting elements, in which the carrying elements have no wide end...     

A pressure-reducing valve for a dust-entraining gaseous or liquid fluent flow comprises a vertical tube containing a bed of particles which are fluidized by the flow. The particles have considerably greater specific weight than the dust in the flow, so that the particles in the bed are not carried away...     

A water irrigation emitter comprises a labyrinth in which the main flowpath is divided into a plurality of branches, and each of the branches is in turn divided into a plurality of sub-branches, the sub-branches being oriented such that the water flowing through each of the sub-branches of one branch...     

Apparatus and method for removing hardening calcium-containing and similar minerals from water, in which raw water is passed through a passage, having a reduced cross-sectional area, in an elongated core of a suitable alloy. The passage is provided with closely-spaced parallel walls which have been polished...     

The invention relates to a radiator valve assembly which includes the well known adjustable throttle valve and seat therefor in combination with an insert in the downstream side thereof which has a fixed throttle passage extending axially thereof. The throttle passage has a cross section which converges...     

A control valve includes a valve body with a fluid inlet and a fluid outlet. A valve seat is mounted within the valve body between the inlet and outlet. A valve plug is reciprocally mounted within the valve body to engage the valve seat. A plurality of valve cages are removably mounted on the valve seat...     

A drip irrigation emitter which provides for varying the length of the water flow path through the emitter in proportion to the pressure applied to it from the irrigation system. A housing defines an internal chamber in which a piston is disposed. The housing has an inlet at one end and an outlet at...     

A proving apparatus and method for large capacity rotary type gas meters having a blower assembly for connection downstream to the test meter, a pulsation dampener for connection upstream to the test meter, and a turbine-type reference meter for connection upstream to the pulsation dampener, whereby...     

An energy dissipator for downwardly discharged water utilizes a hollow cone valve located in a chamber open to the atmosphere and arranged to direct water emerging therefrom at an angle inclined downwards from the horizontal towards a region of a surrounding wall, and a pair of troughs around the inner...     

A guide tube flow restrictor for use on an upper guide tube housing support plate of a nuclear reactor, for guiding of a control rod drive shaft through an aperture in the support plate and restriction of flow of coolant therethrough, has an outer ring seatable on the support plate, the outer ring having...     

A low-noise control valve in which a noise-dampening element (9) is arranged inside of the valve housing (1) in the passageway of the medium. A built-in element, in which lamellas touching one another are arranged over the entire cross section of passage parallel to each other and parallel to the direction...     

A gas turbulator (21) is used in burners (20) of different kinds to obtain better combustion. The turbulator is placed in a chamber or passageway (10) for hot combustion gases. The turbulator fills the passageway forcing the gases to pass a double-wall it including a first membrane wall (22) with radial...     

A plurality of angularly offset orifices (29) are disposed within a fuel line (13) to meter a flow of fuel therethrough. A first set (23) of orifices each have a length (L) (27) and a diameter (D) (31) having a first L/D ratio. A second set (35) of orifices each have a second L/D ratio.

In order to provide a control valve for reducing the pressure of a fluid flowing through a system, while also achieving the pressure reduction in an acoustically damped manner, the flow control valve utilizes a pressure reduction chamber for reducing fluid pressure in an incremental manner together with...     

A motionless fluid mixer for mixing two or more kinds of fluids has an elongated tubular casing into which a mixing element and a spacer are arranged in combination, the mixing element being provided with a helically twisted blade member.