Abstract: A filling nozzle includes a vertical tubular nozzle body for receiving the liquid to be filled and supplied thereto forcibly and intermittently, and a rubber tube connected to the lower end of the nozzle body and having an opening at its lower end. The rubber tube is folded at required portions to constrict the opening. The opening is held closed by the elasticity of the rubber tube against gravity acting on the liquid within the nozzle body when the supply of the liquid is discontinued but is opened by the pressure of the liquid when the liquid is supplied to the nozzle body. The nozzle body is provided at its lower end with a tube holding portion having the rubber tube fitted thereover for holding the rubber tube in shape. The tube holding portion is externally in conformity with the inner surface of the rubber tube except at the folded portions.

Abstract: A buffered and chelated phenol solution has been stablized by adjusting the pH within a critical range and maintaining the solution under inert gas atmosphere. The solution, which may be combined with chloroform, is useful to denature soluble proteins during the purification of nucleic acids. An opaque phenol-compatible package is described which preserves and safely delivers water-clear phenol.

Abstract: A dispenser for flowable materials has a dispensing head with a chamber having inlet and discharge openings of a predetermined volume, a closure to open and close the inlet, a body which can be positioned in the chamber, for occupying a portion of its volume, a supply of flowable material to the inlet, and, the body being moveable so that at least a portion of the body is withdrawn from the chamber to increase the effective volume of the chamber and cause material in the discharge opening to be sucked back into the chamber.

Abstract: A low profile closure which includes a coupling member which is mounted on a container dispensing opening, and an open ended dosing cap including a boundary wall which is dimensioned for removable attachment to an interior surface of the coupling member. The coupling member includes an open ended body portion formed by an upright boundary wall, and a top peripheral edge which defines an outwardly projecting spout. An exterior surface of the dosing cap is arranged in conforming frictional relation to the outwardly projecting spout to provide a low profile closure. Cooperating external and internal threads respectively disposed on the cap boundary wall and coupling body portion are employed to removably fasten the cap in the coupling member.

Abstract: A dispenser closure for attachment to the threaded neck of a container includes spout portion having an annular wall, a shoulder and a depending skirt, the skirt being threaded on an interior surface to lockingly engage the container neck, a spout formation disposed with an area defined by the annular wall and being integral with the spout portion, and a closed-top cap portion having a radially projecting annular shoulder with a depending collar, the collar being threaded on an interior surface to engage a threaded exterior surface of the upper end of the spout portion. A drainage opening in the spout portion facilitates the drainage of the entire contents of the container, and leveling formations facilitate automated assembly of the closure upon the container. Provisions are also disclosed for preventing the exposure of threaded areas of the closure to container contents.

Abstract: A dosing system for filling containers with a particulate/liquid mixture includes three piston-and-cylinder devices, of which a first device delivers the mixture downwards to containers advanced beneath it, a second device feeds a thick particulate/liquid mixture via a conduit to the first device, and the third device feeds a thin liquid via a conduit to the first device. A liquid supply port is disposed peripherally in the cylinder of the first device and is swept by the piston thereof, and a conduit in continuous communication with the port extends through the piston to a lower axial end of the piston.

Abstract: A container filling nozzle of rubber has a wide, substantially square, inlet opening and a cruciform outlet slit which, in the absence of external force, is maintained closed owing to the resilience of the rubber. In the zone of the slit, the internal surface of the nozzle wall is formed with protrusions which extend along both sides of each of the arms of the slit and constitute respective thickenings. The protrusions terminate short of the central ridge of the V-form lips of the nozzle. Thus, the lips have their outlet zones more rigid and yet retain the necessary flexibility, so that sealing of the slit is improved and yet the lips can open wide.

Abstract: A closure cap for a container has a mounting part mounted on the container neck with a closure element over the container opening surrounded by small openings, and a movable part for covering the openings around the closure element when it is moved from an opened to a closed position. The movable part has a passage formed by walls in the shape of a truncated cone defining an external orifice of small openings of a given open area and an internal orifice of a larger open area which is recessed inwardly from the external orifice. The difference in orifice area creates a suction force to suck fluid back into the orifices when the container is returned to the upright position.

Abstract: The device makes use of at least one plenum for each instrument, connected to the water circuit immediately upstream of the relative handpiece. Best results are obtained by connecting two such plenums to the water circuit in parallel, the one charged by the spray air circuit, the other by the power air circuit, as independent operation ensures greater reliability.

Abstract: A soft drink dispenser capable of rapidly dispensing carbonated beverages with minimized foaming action. The syrup and soda are dispensed separate from each other and allowed to mix upon the ice in a cup placed beneath the dispensing head. The dispensing of the syrup and soda is staged to minimize foaming while achieving optimum beverage taste. Syrup is dispensed from individual pumps which communicate with a bulk supply. The syrup is consolidated in the pumps, preventing waste or the introduction of "slugs" into the dispensing line. The temperature of the syrup is monitored and compensation is made during the dispensing cycle to accommodate changes in viscosity. In generating soda, water is precooled and then introduced into an insulated tank where it is subjected to pressurized carbon dioxide. In the pour head, a cluster of soda orifices are peripherally encompassed by syrup orifices, certain of which are angled to cause the syrup to convolute the stream of soda.

Abstract: A multicomponent product container includes two separate component compartments covered by a common pouring cap, individual pouring openings for the first and second components contained in the compartments, respectively, offset from one another relative to the longitudinal axis of the container and opening in the plane of an outer surface provided in said cap. The pouring openings are each juxtaposed in the pouring direction necessary to dispense the first and second components, by an individual pouring edge, which both rises beyond the outer surface of the cap, and projects beyond the associated pouring opening in the lateral or peripheral direction. Each pouring edge is shaped for providing in the tilted position of the container necessary for pouring via gravity said first and second components from said pouring openings, a sink formed in the region of the associated pouring opening.

Abstract: A reciprocating pump for dispensing liquids from a container comprises a hollow body in which is slidably fitted a hollow piston. A piston seat is located in the body and provides a segment sized for sealing fit inside the hollow piston, thereby minimizing possible leakage through the pump when it is transported with a liquid filled container. Upper and lower valves are provided in the piston and body respectively. The piston seat is adapted to interact with the upper valve member to hold it open during a portion of an upward stroke of the piston thereby drawing any undispensed liquid back into the pump.

Abstract: A self-draining container is disclosed. The container includes a body and a neck, wall and dispensing spout extending upwardly from a body opening. The dispensing spout has a diameter equal to or greater than the diameter of the neck. The wall surrounds the dispensing spout which extends above the top of the wall. A web joins the wall and the dispensing spout to form a drain channel. A drain opening through the spout is defined adjacent the channel for draining fluid form the channel in to the container body. A cap having a depending skirt defining threads mates with threads on the container wall to close the container.

Abstract: A dripless closure assembly for a container comprising a body seated in the neck of the container and which has a pouring spout. A measuring cup which also functions as a cap is disposed over the pouring spout and has a first threaded outwardly disposed skirt for threaded engagement with the neck of the container. A second skirt inward of the outer skirt and extending into the body is provided for eliminating dripping on the threads.

Abstract: Apparatus for volumetric dosing of viscous products comprising a dispensing outlet connected to apparatus for substantially vertically moving the outlet, a supply conduit, a valve for the supply conduit, a dispensing valve and a dosing chamber. The dispensing outlet constituting the lower end of the dosing chamber. Preferably the apparatus comprises a suck back feature for sucking back product to prevent after dripping.

Abstract: A paint can lid comprising a one-piece molded plastic lid. The periphery of the lid is formed to provide an outer edge that will engage the underside of a paint can rim, engage and extend up along the outer, vertical edge of the paint can rim, and extend inwardly along the top of the paint can rim. Inward of the lid periphery, the lid is formed with a downwardly-extending annular cavity defined by the lid wall having a U-shaped cross section. Immediately inward of the annular cavity, the lid is formed to provide a pouring spout of frusto-conical configuration having a truncated top. The top of the spout is provided with a peripheral rim enclosing a pouring opening of a diameter smaller than the diameter of the spout top itself.

Abstract: The present invention relates to a dispensing device comprising a housing containing at least three pressure chambers. The upper pressure chamber being separated from the middle pressure chamber by a reciprocating upper piston composed of a head and a stem. A lower piston is reciprocally positioned between the middle and lower pressure chambers such that pressurization of the lower pressure chamber exerts upward pressure on the lower piston and pressurization of the middle pressure chamber exerts downward pressure. The lower piston is fixed to a reciprocating rod which has a dispensing rod tip. The dispensing rod tip is slidably situated within a dispensing tube which has a tube opening for introduction of a dispensible material therethrough. The dispensing rod tip is reciprocatable between an upward, downward and intermediate position. In its upward position, a tube opening is non-occluded, thereby allowing the dispensible material to enter a dispensing tube.

Abstract: An apparatus for forming a unitary molded container with a special neck configuration such as a drain-back neck with integrally molded internal threads and a pouring spout. The apparatus comprises a circumferentially continuous sleeve which surrounds the core rod in an injection-blow molding machine.

Abstract: A fuel injector for supplying liquid fuel to an air inlet manifold of a spark ignition engine has a fuel-inlet, an outlet defined in a tubular component mounted in a tubular part of the injector body, and at least one orifice formed in a valve seat member downstream of a valve member. The tubular component is spaced downstream from the valve seat member. An air circulation duct is defined between the tubular component and tubular part, so that spray of fuel flowing through the outlet draws air through the duct to minimize dribble of fuel from the injector.

Abstract: A container for liquids having a dripless lip assembly incorporated with an angled spout. The container includes various caps for closing the pouring orifice. The caps may include an external retaining plug for sealing and unsealing the pouring orifice quickly. The caps may also include a tamper resistant pull tab. A separate filling orifice is provided.

Abstract: This dripless automatic syringe for dispensing fluids has a barrel for containing the fluid, a nozzle for discharging the fluid, and a housing to which the barrel is attached. A piston rod in the housing carries a rigid sealed piston head in the barrel for pushing out the fluid. Behind the piston head a normally unflexed elastic disc in the housing. The disc flexes when the piston rod moves forwardly under a driving force. The disc unflexes to retract the piston rod and piston head slightly when the driving force stops to create a suction which draws fluid back into the nozzle and thereby prevents dripping. The disc has an integral nipple which frictionally grips the rod to hold it in place, when the driving force ceases. The nipple permits axial rearward movement of the piston rod by an externally applied force for filling the barrel with fluid.

Abstract: A soft drink dispenser capable of rapidly dispensing carbonated beverages with minimized foaming action. The syrup and soda are dispensed separate from each other and allowed to mix upon the ice in a cup placed beneath the dispensing head. The dispensing of the syrup and soda is staged to minimize foaming while achieving optimum beverage taste. Syrup is dispensed from individual pumps which communicate with a bulk supply. The syrup is consolidated in the pumps, preventing waste or the introduction of "slugs" into the dispensing line. The temperature of the syrup is monitored and compensation is made during the dispensing cycle to accommodate changes in viscosity. In generating soda, water is precooled and then introduced into an insulated tank where it is subjected to pressurized carbon dioxide. In the pour head, a cluster of soda orifices are peripherally encompassed by syrup orifices, certain of which are angled to cause the syrup to convolute the stream of soda.

Abstract: A dispensing and closing package for liquid products has a cap which also serves as a measuring cup. The cap fits on the outer circumference of a dispensing cylinder. A passageway is provided adjacent to a common point between the cap and the dispensing cylinder running between the container body and the inside of the cap. Residual liquid products adherent in the inside of the cap returns into the container body through the passageway.

Abstract: A two piece screw closure for containers is disclosed. A removable guarantee band is provided to prevent tampering with the contents of the container before the first use. The closure has a spout equipped lid which can be turned from the closed position to the open or pouring position which are located 180.degree. apart, following removal of the guarantee band. The base is affixed to the container neck and has a plug projecting outwardly which coacts with a depending annular wall on the lid to seal the container when the lid is in the closed position. Flow-through openings in the base adjacent the plug permit dispensing the contents through the spout.

Abstract: A filter-separator pour-out cap for attachment to the neck opening of a container to separate particulate material from a liquidic suspension in the container when the container is tipped to pour out its contents. The cap comprises a filter-separator section having an upstream face at which flow from the container enters and a downstream face at which flow exits. This section comprises successive elements that are spaced axially apart from each other and are constructed and arranged to present at the upstream face juxtaposed uniformally spaced apart edges that define the entrances of openings that pass through the filter-separator from the upstream face to the downstream face. These elements have, in transverse cross section, a taper which narrows in the direction from the upstream face to the downstream face so that the openings are of progressively increasing taper in the same direction. In one embodiment of the invention these elements are identical circular rings.

Abstract: A valve unit to be used in a packing machine of the type which manufactures filled and sealed non-returnable packages for dairy products such as milk, yogurt and the like from prefabricated blanks. The packages are filled one at a time by a metering pump and the liquid is fed from the pump to the package via the valve unit. The valve unit includes a check valve and a flexible nozzle which co-operate so as to prevent any after-dripping between pumping strokes. This is achieved in that the check valve with the help of a piston component, after the completed pumping stroke, creates a vacuum in the liquid filled valve unit. This vacuum affects the flexible nozzle so that it closes rapidly and effectively.

Abstract: A fluid delivery system for dispensing precisely metered quantities of a fluid, and more particularly, a fluid delivery system incorporating a diaphragm pump for effectuation of the precise control over the dispensing of a metered quantity of the fluid through the formation of a fluid flow-occluding air bubble at the point of discharge inhibiting the formation of droplets tending to adversely influence the accuracy of the system. Also disclosed is a method for delivering and dispensing precisely metered quantities of a fluid through the utilization of the system.

Abstract: A plastic container and package having a self-draining feature is provided. The container includes a bottle with a dispensing spout which has a thread or other closure retention device molded therein and an annular sleeve encircling the spout and cooperating therewith to form a channel for capturing excess liquid flowing down the outside of the spout following dispensing of such liquids. An aperture is provided for draining liquid from the channel to the body portion of the container. A closure having thread or other retention device engages the closure retention device of the spout to form the remainder of the package.

Abstract: A nozzle assembly for dispensing measured volumes of a liquid has a valve for dividing an inflowing volume of liquid into a plurality of equal outflowing aliquots through the use of a radial spreading zone in the valve. The valve is connected to a plurality of nozzles which dispense the liquid into containers. The nozzles each have a sump and a plurality of outlet nipples to eliminate dripping of liquid from the nozzle during valve drawback.

Abstract: A resilient squeeze bottle dispensing package capable of dispensing viscous products without excessive air entrainment and belching on successive dispensing cycles. In a preferred embodiment, the viscous product is preferably suspended inside a resilient squeeze bottle in a thin flexible bag. The flexible bag is secured about its perimeter to the interior of the squeeze bottle at its top and approximately at its midpoint to facilitate both complete emptying of product and desirable suckback characteristics when the opposed squeezing forces ae removed from the resilient outer wall of the bottle. A suckback valve is located between the dispensing orifice in the shroud of the package and the flexible bag to limit the amount of air which can enter the package through the dispensing orifice at the conclusion of each dispensing cycle and to prevent slumping of viscous product remaining in the shroud into the bottom of the flexible bag between dispensing cycles.

Abstract: A highly-viscous material coating apparatus for use, e.g. in an automobile coating process, to coat a joint of a workpiece, may be mounted on a robot. It provides improved operation where the workpiece provides a reference surface parallel to the joint, where the workpiece provides a reference surface displaced from the joint at varying distances along the length of the joint, and where the workpiece provides no reference surface. Where a reference surface is available, an extendable spring-biased guide pin of the apparatus moves along the reference surface, and any positional errors are compensated-for by action of the spring. If the distance between the reference surface and the joint varies, the varying distance may be compensated for by various disclosed practices. The apparatus also can be used where no reference surface is provided by retracting the guide pin with respect to the nozzle and by controlling the robot so as to direct the nozzle to the joint.

Abstract: A dental treatment apparatus includes a pressurized fluid source for pressurizing and supplying a fluid necessary for performing dental treatment operation and fluid conduits for conveying the pressurized fluid. The pressurized fluid source and a handpiece communicate with each other by the fluid conduits and a valving member is interposed in the liquid conduit for sucking the liquid during in a direction opposite to the liquid supply direction when the dental treatment operation is terminated. A check valve is interposed in the liquid conduit between the valving member and the dental treatment tool provided at the extreme end of the dental handpiece.

Abstract: This ultrasonic atomizer includes an oscillating member, a means for vibrating the oscillating member at a supersonic frequency, a bottle for liquid storage, with an opening, fitted generally above the oscillating member with regard to the preferred orientation of the atomizer during use, and a nozzle fitted into the opening of the bottle, this nozzle having a tip portion protruding outside the bottle in the generally downwards direction and approached closely to the oscillating member. The nozzle is formed with a fine groove for leading liquid in the bottle downwards to the tip portion of the nozzle by capillary action and by gravitational action, and with an aperture for introducing air from the outside into the bottle. Thereby liquid in the bottle may be properly supplied to the oscillating member to be atomized in a controlled fashion, and interruption of liquid supply and also dribbling of liquid are positively prevented. Constructions for the nozzle and for the bottle are also disclosed.

Abstract: A liquid dispenser having a downwardly facing outlet with liquids of relatively high viscosity usually forming a meniscus at the outlet, the size of the meniscus being determined by the physical properties of the liquid, the atmospheric conditions, and also the cleanliness of the outlet nozzle. The present invention seeks to overcome this problem by providing means to generate a suction within the nozzle after the liquid has been dispensed, to draw any liquid within the area of the outlet of the nozzle back into the nozzle.

Abstract: A pour spout fitment for a flat top or a gable top paperboard container. A flat strip of rigid plastic material is bent over upon itself to form upper and lower strips integrally hinged together. The lower strip carries a plug coplanar with it, the upper surface of the plug adhered to a part of the lower surface of the upper, hinged strip. The lower surface of the plug is sealed to a portion of a barrier extrusion which covers the entire interior surface of the container, the plug being aligned with a dispensing opening through the paperboard, the opening also covered by the barrier extrusion material. For initial opening and dispensing of the container contents, the upper strip is pulled upwardly, carrying with it the plug and the ruptured barrier extrusion material adhered to the plug. The surfaces of the lower strip over which the contents of the container flow during dispensing are thus protected from contamination at all times except during dispensing.

Abstract: A dispensing apparatus is disclosed having a hollow wall member closed at one end with a dispensing opening at the other end. A ledge is mounted within the hollow having an aperture therethrough to permit precise pouring through the aperture but with the opening otherwise permitting dispensing of large amounts. Indicia is provided within the hollow to measure a predetermined amount of material, particularly the amount required for a washload within an automatic washing machine. The dispensing apparatus additionally operates as a closure for a container, preferably of a laundry product and has a skirt for matingly engaging a container opening and closing same.

Abstract: A method for the filling of a container with a potable liquid, such as fruit juice, and a filler nozzle for practicing the method. Prior methods for filling containers with potable liquids have often employed a series of nozzles, each discharging a single stream of liquid, falling under the action of gravity, vertically downward through an opening in a nozzle, each nozzle acting in cooperation and being attached to its valve. As the container is filled, both splashing and foaming of the liquid in the container, has often caused problems. According to the method and apparatus of this invention, the potable liquid to be dispensed into a container is directed to the interior surface of the container at a point above its intended fill level. By virtue of this method, foaming and splashing are minimized at each filler nozzle station.

Abstract: Method and apparatus for dispensing beverage concentrates and preventing concentrate from drying-up. In a beverage dispensing machine, an outlet nipple is provided having a first diameter bore portion and a second bore portion conically flared outward extending away from the first bore portion. The shape of the second bore retains a quantity of concentrate therein after dispensing which prevents ambient air from contacting concentrate in the smaller first bore portion and prevents the concentrate therein from drying-up.

Abstract: A tapping stopper for a bottle is provided to prevent the content liquid from trickling along the outside of the bottle when pouring. The tapping stopper comprises a pouring cylinder having a trumpet-shaped lip, an auxiliary external cylinder having a trumpet-shaped lip, and a bottom plate connecting the pouring cylinder and the auxiliary external cylinder. The pouring cylinder and auxiliary external cylinder from a peripheral groove between them. The height difference between the cylinders is determined according to the viscosity of the content liquid.

Abstract: A dispenser for liquids and viscous fluids has a syringe-like device with a barrel for containing fluid and a nozzle at one end. The plunger is movable axially in the barrel for discharging the fluid. At the inner end of the plunger is a flexible, elastic cap which has an end wall that is normally concave, but which is flattened out under pressure when the fluid is discharged. When pressure on the cap is removed, the cap reassumes its concave shape thereby creating a suction in the barrel which draws fluid back into the nozzle to prevent dripping.

Abstract: A passive liquid measuring and pouring device adapted for mounting on the open mouth of a liquid container. The measuring and pouring device includes an attachment transition adapted to attaach the device in sealing relationship to the open mouth of the liquid container. The attachment transition provides fluid communication between the container and the liquid measuring and pouring device. The device further includes a measuring reservoir having a predetermined volume, and has an inlet port located adjacent its uppermost portion when in its upright position, and a drain hole located near its lowermost portion. The drain hole provides fluid communication between the measuring reservoir and the liquid container. A substantially vertical liquid filling channel provides direct fluid communication between the inlet port of the measuring reservoir and the attachment transition.

Abstract: A spout for a liquid container which has an outer tube and an inner tube and which can hold drip from the spout without allowing it to flow over the upper edge of the outer tube and can be molded by use of a metal mold simple in construction. A plurality of reservoir forming members are arranged along the inner wall of the inner tube at regular spacings so as to extend vertically. The liquid on the guide plate between the inner tube and the outer tube is trapped in the reservoirs formed by the reservoir forming members.

Abstract: A dual temperature beverage dispenser for providing a variety of beverages, both hot and cool from a small, high capacity, coin-activated unit. The dispenser includes a removable operating module which can be stored for safekeeping separate and apart from a water storage unit which becomes inoperative when the operating module is removed. The water storage unit includes a hot water heater including a tank and a storage tank for ambient water oriented above the hot water heater tank for gravity flow of ambient water to the hot water heater tank when required and for gravity flow to a discharge point in the operating module to enable ambient or cool water to be obtained without payment or beverage to be obtained from the dispenser by use of an appropriate coin or token.

Abstract: A liquid dispenser formed separately from or integrally with a container, comprising a cylindrical throat with a pouring spout protruding from one side of the top end of the throat and an annular flange extending around the throat. The dispenser includes at least one vertical arranged flow-interrupting means which may be formed in the pouring spout or both in the pouring spout and in the throat. The flow-interrupting means is disposed substantially perpendicular to the pouring direction of the liquid. The dispenser also includes a tongue provided on the liquid passage of the pouring spout for directing the liquid flow and for recovery of any drop of liquid that may drip down the outer wall of the container after pouring.

Abstract: A dispensing closure construction of the type having a base part or body that is held captive on a container neck, and a sealing cap and integral hinge connected to the body. The body has an off-center discharge orifice and a high, domed top portion behind the orifice and extending above the level thereof so as to channel product from the top portion back toward the orifice after the container is used and returned to an upright position. A continuous sealing shoulder on the body engages the inner cylindrical surface of the sealing cap near its edge when the latter is swung to its closed position to minimize the possibility of water or other liquid from entering the area around the underside of the cap. A rib carried on the underside of the sealing cap is receivable in a recess in the domed top portion, and can engage opposed, facing shoulders so as to limit relative turning between the cap and body. The rib and recess are adjacent the location of the hinge.

Abstract: A liquid dispenser is described which comprises a substantially airtight container for storing liquid to be dispensed with the container being formed with a downwardly-extending, constricted liquid passageway and a cap member with an open top in liquid-sealed engagement with the lower end of the container to define a chamber within the cap member and surrounding the liquid passageway, the cap member having an outlet positioned above the lower end of the liquid passageway in the chamber such that when an increase of pressure is established within the container liquid is expelled through the outlet.

Abstract: An apparatus for intermittently and accurately discharging a measured portion of the contents of a container by a peristaltic pumping action and such apparatus includes an elongated elastomeric tubular body having a connection at one end for attachment to the container and a discharge tip section at the other end on which a dispensing valve and cap are mounted.

Abstract: The top wall of the container opposite the bottom slopes upward slightly at one side where a curved neck adjoins it. At the far end of the neck, there is a threaded cylindrical mouthpiece holding an insert, which may have a drip-disk at the outer end if the container is used for a liquid cleanser. The center line of the cylindrical mouthpiece is slightly inclined downward relative to the horizontal. A depression in the top wall catches drops of liquid falling from the drip-disk, if any. In the area of transition from the top wall to the neck, the latter is partially encircled by a groove leading into the depression. Any drops of liquid clinging to the neck are guided by this groove into the depression. Thus the part of the container intended to be grasped always remains dry.

Abstract: A suck-back pump for preventing any additional amount of liquid from dropping out of the tip of a delivery pipe, after a predetermined amount of liquid has been delivered from the delivery pipe. The suck-back pump includes inlet and outlet ports for liquid, first and second chamber respectively connected with the inlet and outlet ports, a communicating passage for connecting the first and second chambers with each other, a shut-off valve movable to close the communicating passage, and a suction element movable to change the volume of the second chamber. The actuation of the suction element is retarded so that it is actuated after the shut-off valve has been actuated.

Abstract: A dripless pouring cap having a funnel-shaped pouring spout with an outwardly curved pouring lip is screwed onto a container. Below the pouring lip are two catch basins to trap small amounts of liquid that has dripped from the pouring lip. A hinged lid is pivottally connected to the cap to facilitate opening and closing of the pouring spout. The catch basins and lid are so arranged so that opening and closing of the lid will not splash liquid trapped in the catch basins.