Abstract: Apparatus and methods for providing controlled pressure-flow pulses which purge a catheter system with turbulent flow flushing. Accomplishment of such controlled pressure-flow pulses is provided by a variety of inventive devices including a special plunger rod for a conventional syringe, other interactive parts for conventional syringes, an in-line catheter attachable device which automatically generates the controlled pressure-flow pulses and also single pulse, digitally operated devices.

Abstract: A device (100) for delivering a medicament into a patient's body by injection into or through the patient's skin, including a main body having a top enclosure (116) and a bottom enclosure (104), a reservoir (160) disposed within the main body for containing the medicament, and an injection needle (152) for penetrating the skin of the patient, the needle (152) having a lumen and selectively communicating with the reservoir (160). The device also includes a pressurizing system (600, 140) for selectively pressurizing the reservoir (160). In a pre-activated position, the pressurizing system (600, 140) contacts and compresses the reservoir (160) to reduce the initial volume of the reservoir (160), thereby allowing for partial filling of the reservoir (160).

Abstract: An epidural space identification device to identify when a tip of a needle used for epidural anesthesia enters an epidural space that includes a barrel formed in a cylindrical shape and communicatively connected to a needle section, a plunger formed in a cylindrical shape, retractably inserted into the barrel, and having an air hole communicating with an inside of the plunger, and an expansible member having an expansible part provided at a front end part of the plunger and bulging inside of the plunger with a positive pressure generated by pushing the plunger while air discharge from a needle side is regulated.

Abstract: A unit, assembly and device suitable for a medical localization device suitable for localizing a region in a body with a distal hollow needle includes a tube extending from a proximal first end to a distal second end. The first end is designed to be in communication with a fluid filled container. The unit includes a first part of sensor means. The first part is a sensor interface, in which the sensor interface is provided to the tube between the first end and the second end. The sensor interface is suitable for observation of the pressure in a fluid in the tube that is in communication with the fluid in the container. The unit includes a closing device distally with respect to the sensor interface for varying the pressure in the fluid in the tube, in which the sensor interface is a membrane.

Abstract: Disclosed is an applicator for an adhesive lavatory treatment composition. The applicator comprises a quantity of an adhesive lavatory composition, a piston part moveably engageable with a base part, wherein the piston part includes a piston plate and a grip element, the base part includes an upper cavity, and a lower cavity, wherein the piston plate is fitted within the upper cavity of the base part and is moveable within the upper cavity of the base part. The applicator may be a single use applicator adapted to dispense only a single dose of an adhesive lavatory treatment composition, or may be a multi-use applicator which may be refilled and reused to deliver plural doses of an adhesive lavatory treatment composition.

Abstract: A dispensing system includes a housing and a refill container carrying a dispensable material and received in the housing. A pump mechanism is coupled to the refill container and movable from a first position to a second position and back to the first position. An identifier is carried by either the refill container or the pump mechanism, and a detection device is carried by the housing. The detection device monitors a status of the identifier and allows operation of the pump mechanism based on a status change of the identifier.

Abstract: The invention relates to a container (1) for storing and discharging at least two components, in particular by means of a discharge gun or the like. The container (1) has at least two chambers (4a, 4b) for accommodating the components, a plunger means (15, 18, 20) for simultaneously discharging the components from the chambers, a sealing means for sealing the chambers, which sealing means can be opened and a mixer (8).

Abstract: A cosmetic container includes a piston in which content contained in the container always reaches a content inlet of an airless discharge pump as the piston rises upward along and on an inner wall of the container with operation of the airless discharge pump. More specifically, the content amount remaining in the container is indicated in association with the rising movement of the piston. The cosmetic container includes a container body, an airless discharge pump installed to the container body, a piston installed in the container body so that a topmost level of content contained in the container body reaches a content inlet of the airless discharge pump as the piston moves upward along and on an inner wall of the container body with operation of the airless discharge pump, and an indicator indicating content amount remaining in the container body in association with rising movement of the piston.

Abstract: A liquid dispensing and blending technique is disclosed. The apparatus includes a cover assembly unit including a mounting rack with a plurality of level indicators, a measuring vessel, for storing a liquid for dispensing, including an opening at top to be covered with the cover assembly unit, and an overflow port on a sidewall to drain an excess amount of the liquid so that a liquid surface in the measuring vessel is defined; and a dip tube attached to the mounting rack having an intake opening to remove a specific amount of the liquid from the measuring vessel, an exit end to lead the amount of the liquid to a mixing container, wherein the specific amount of the liquid is determined from the level indicators.

Abstract: A manual inflator having a status indicator that indicates whether a fully-charged, unspent gas cylinder has been installed on the inflator. The status indicator comprises a “single point” indicator having an indicator window that displays the color “green” when the automatic inflator is fully operational or the color “red” when the inflator is at least partially inoperable automatically due to the removal of the gas cylinder or due to the firing of the inflator resulting in a spent gas cylinder.

Abstract: The invention relates to a cosmetic container including a piston in which content contained in the container always reaches a content inlet of an airless discharge pump as the piston rises upward along and on an inner wall of the container with operation of the airless discharge pump. More specifically, the invention relates to such a cosmetic container in which content amount remaining in the container is indicated in association with the rising movement of the piston. A cosmetic container according to the invention includes a container body; an airless discharge pump installed to the container body; a piston installed in the container body so that a topmost level of content contained in the container body reaches a content inlet of the airless discharge pump as the piston moves upward along and on an inner wall of the container body with operation of the airless discharge pump; and an indicator indicating content amount remaining in the container body in association with rising movement of the piston.

Abstract: An inhaler comprising: a body; at least one cover element that is movable between a closed position and an open position; individual reservoirs formed on a reservoir substrate; movable support means that receive said reservoir substrate and that are displaceable between a non-dispensing position and a dispensing position; and an indicator device for indicating doses that have been dispensed or that remain to be dispensed, said indicator device comprising: a rotary indicator element that supports indicator means, such as numbers, colors, and/or symbols; and an actuator that co-operates with said movable support means so as to cause said rotary indicator element to turn when said movable support means return from the dispensing position to the non-dispensing position.

Abstract: A dispenser of viscous fluid, in at least one embodiment a hot melt glue adhesive, has a heater element, an adhesive source, a main common passage, and a series of valves that all fluidly connect to the main passage. A sheet of receiving material, such as an envelope, has hot melt glue applied to its surface as it passes under the series of valves. A variable amount of valves can be activated by moving control rods inwardly or outwardly of the main common passage. The moving control rods have indicator markers, a securing screw and are housed in U-shaped beds which collectively make adjusting the dispensing pattern very easy.

Abstract: The present invention relates to a closure for a container, in particular for a fluid product, with a first part having an outlet opening, and with a second part having a carrier section, which carries a closing surface, wherein said first part and said second part are arranged movably against each other at least between a first position and a second position, and wherein, in said first position, said outlet opening is closed by said closing surface, while, in said second position, the outlet opening is open, wherein the first part confines a first cavity, through which the product can be transferred out of the container to the outlet opening and said carrier section, in said second position, is arranged at least partially within said first cavity. The present invention relates to a method for manufacturing said closure.

Abstract: A nebulizer having an insertable container and a monitoring device for counting actuations of the nebulizer is proposed. The monitoring device is mounted in a detachable housing part and directly detects movements of container during a nebulizing process, an air supply current in the region of a mouthpiece, and/or the production of aerosol, in order to detect this as the actual dispensing of fluid and actuation of the nebulizer, while preferably the time of actuation of the nebulizer is additionally detected and stored. This allows better monitoring and guidance for the user.

Abstract: The invention relates to a cartridge having at least one tube (3a, 3b), particularly a circular cylindrical tube. At least one outlet opening (11a, 11b) is provided in the side wall of the tube. Furthermore, a closure piston (10a, 10b) and a dispensing piston (4a, 4b) that can be adjusted by means of a piston rod are disposed, in sealing and displaceable manner, spaced apart from one another in such a manner that a chamber for accommodating substances that are capable of flow and/or pasty substances is formed between the closure piston and the dispensing piston (4a, 4b). In this connection, the closure piston (10a, 10b) can be displaced between a closure position in which the closure piston is positioned between the dispensing piston and the outlet opening (11a, 11b), to block a flow connection between the chamber and the outlet opening (11a, 11b), and a dispensing position that releases the flow connection between the chamber and the outlet opening.

Abstract: A device for applying controlled unitized doses of a flowable material to a surface is disclosed. The device includes a tubular body and a plunger. The body has a wall defining a cavity, and the body has a first open end and an opposite second end having a dispensing orifice. A flowable material is contained in the cavity of the body. The plunger has an outer sleeve dimensioned for surrounding at least a section the body and an inner pushing structure dimensioned for axial movement in the cavity of the body. The device has means for indexed positioning of the second end of the body and an inner end of the inner pushing structure of the plunger relative to each other to provide controlled unitized doses of the flowable material to a surface when the plunger is moved toward the body by a user's hand.

Abstract: A floating head liquid dispenser includes a robotic control mechanism for moving a support member toward and away from a substrate. A liquid dispensing head is operatively connected to the support member for movement relative thereto upon contact with the substrate. A linear displacement sensor is operatively connected to the support member and the liquid dispensing head so that displacement of the liquid dispensing head relative to the support member is sensed upon contact of the dispensing head with the substrate. The floating head liquid dispenser stops movement of the support member and dispensing head toward the substrate when the displacement is sensed to ensure proper positioning of the dispensing head relative to the substrate during a liquid dispensing cycle.

Abstract: A pill loader system comprising a pillbox loader and a matching pillbox for loading pills into the pillbox. The pillbox loader has a plurality of loader containers, and the pillbox has an identical number of pillbox containers. The pillbox loader is positioned on top of the pillbox and the pills are placed into the loader containers according to instructions written on a pillbox loader form, which is positioned within a loader bottom plate which is slidably inserted between the loader and pillbox such that the loading instructions appear in the bottom of the loader containers. In operation, the loader bottom plate is removed, and the pills drop into corresponding pillbox containers.

Abstract: A dual piston/poppet valve in a fuel dispenser works with a two-stage valve to help eliminate errors from an inferential flow meter. When the two-stage valve opens partially, a secondary fuel path is opened in the dual piston/poppet valve. A sensor detects the opening of the secondary fuel path and reports its opening to a control system. The two-stage valve opens fully and a primary fuel path is opened concurrently. During transaction completion, the two-stage valve partially closes, resulting in the closing of the primary fuel path. When the two-stage valve closes completely, the secondary fuel path closes. The sensor detects the closing of the secondary fuel path and reports the closing to the control system. Based on the outputs of the sensor, the control system accepts or declines input from a flow meter.

Abstract: A reversible indicator tab is provided for a carafe of the type having a lever with a free end extending therefrom. The indicator tab includes a hollow cap having a top wall, a bottom wall, and a pair of side walls. The top and bottom walls are spaced apart and are connected to the side walls. The side walls are spaced apart and are connected to the top and bottom walls. The walls define at least one open end sized to receive the free end of the lever. The lever is receivable in at least two different orientations relative to the top wall. The top wall is readily visually distinguishable from the bottom wall by color.

Abstract: The position indicator is applicable to submerged valves forming part of hydraulic systems for the transfer of liquids or gas, based on that the corresponding signal which is obtained as a consequence of the state or position (open or closed) of the valve is transmitted by hydraulic pressure, from a long distance and transformed into an analog or digital signal which can be viewed on a display screen. The position of the valve (2) is set by the position of an actuator shaft (3′) to which are secured cams (11) so that the rotation of the shaft causes the cams (11) to act on hydraulic cartridges (12), thereby regulating the position of said cartridges, and as a consequence, regulating the pressure of a secondary hydraulic system to provide said pressure signal which can be converted to any type of reliable indication, corresponding to the real position of the valve (2).

Abstract: A dosage dispenser assembly for containers to dispense liquids in the containers. The assembly includes elongated hollow barrel and an arrangement for removably mounting the barrel over the discharge opening in the container so that the port in the barrel in the seated position is disposed adjacent the bottom of the container. A stop sleeve of generally tubular configuration engages internally of the barrel and has at least two key ways of different axial depth defining cam follower surfaces. A plunger engages in the barrel having a lug element and is rotatable relative to the stop sleeve between a position wherein the plunger tip is fully seated in the barrel and another position wherein the plunger may be activated axially to draw a predetermined dosage of liquid contents into the barrel.

Abstract: The capsule (11), which can be screwed onto the threaded neck (3) of the bottle, coaxially forms the cylinder (15) of the syringe device; an element (21) inside the capsule (11) and surrounding the cylinder (15) forms an annular leaktight seal (21A) which can be tightened onto the edge (3B) of the neck (3) and fits inside the bottle neck by means of a shaped extension piece (21B); said element (21) accommodates, via a central hole, the cylinder (15) of the syringe device and surrounds it with an annular lip (21C) which extends toward the center of the bottle so as to wipe the outer surface of the cylinder as the capsule is fitted with a safety cap (29) and a seal (33).

Abstract: A method and an apparatus for a repeatable dosing or metering of fluids and in particular liquids in a selectable and reproducible amount in which the fluid amount to be dosed is learned in a dosing operation effected manually once and stored in a retrievable way; the apparatus comprises a fluid line 2 for a fluid 1 including a fluid inlet 3 and a fluid outlet 4 between which a shut-off device 7 controlled by a control unit 8 is provided, an operation 5 and a memory input 9 a learning mode is initiated and that by once pre-dosing a corresponding quantity information is stored and that by operating the memory input 9 a dosing mode is initiated in which the fluid amount corresponding to the stored quantity information is dosed by the shut-off device.

Abstract: A liquid dosage dispenser includes a bottle and a dispenser apparatus supported on the bottle having a housing extending into the bottle and a plunger device extending into the housing for longitudinal movement therein. The housing includes an opening through which liquid in the bottle can be drawn into the housing, with one of the housing and plunger device including a stop system of predetermined configuration and the other of the housing and plunger device including a follower for contacting the stop system. The plunger is rotatable with respect to the housing to align the follower with a desired portion of the stop system, with the follower and stop system, when aligned, allowing the plunger to be moved longitudinally along the housing until the follower contacts the stop system to draw a predetermined amount of liquid through the opening into the housing. The dispenser is removable from the bottle to allow the predetermined amount of liquid to be dispensed through the opening.

Abstract: An apparatus for disinfecting the interior surfaces of air conditioning ducts comprises a pressurized aerosol canister having a nozzle and an elongated flexible tubular extension coupled to the nozzle. The extension is closed on its free end and is provided along a portion of its length with an array of outlet ports or holes. When the nozzle is actuated, liquid disinfectant is delivered through the array of holes in the form of an aerosol spray or mist that issues in all directions from the tubular extension. In use, the end of the tubular extension is inserted into an air conditioning duct up to a visual indicator provided on the tube. The nozzle is then depressed, which causes an aerosol cloud to be expelled on the inside of the duct coating the interior surfaces of the duct and disinfecting against mold, mildew, and bacteria.

Abstract: A combination dispenser and personal care tool device is in the form of a rigid container for a bathroom item. A retainer or holder is mounted to the container which receives a personal care tool. In a preferred practice of the invention the container is a toothpaste dispenser and the personal care tool is a toothbrush. In a further aspect of the invention the dispenser includes indicia for indicating the contents level in the dispenser.

Abstract: A liquid dosage dispenser includes a bottle and a dispenser apparatus supported on the bottle having a housing extending into the bottle and a plunger device extending into the housing for longitudinal movement therein. The housing includes an opening through which liquid in the bottle can be drawn into the housing, with one of the housing and plunger device including a stop system of predetermined configuration and the other of the housing and plunger device including a follower for contacting the stop system. The plunger is rotatable with respect to the housing to align the follower with a desired portion of the stop system, with the follower and stop system, when aligned, allowing the plunger to be moved longitudinally along the housing until the follower contacts the stop system to draw a predetermined amount of liquid through the opening into the housing. The dispenser is removable from the bottle to allow the predetermined amount of liquid to be dispensed through the opening.

Abstract: A pen shaped syringe for repetitive injection of individually set doses of a medicine from a cylinder ampoule reservoir comprises a dose setting member which may be rotated to cause a rotative movement of a dosing member and a combined rotative and axial movement of an indicator member indicating the set dose, and a piston drive member which when rotated in one direction moves the piston into the cylinder ampoule. A unidirectional coupling is established between the dosing member and the piston drive member by each member carrying a disc having surfaces with sector shaped saw teeth riding over each other when the dosing member is rotated in the dose setting direction and engaging each other when the dosing member is rotated in the opposite direction corresponding to the direction of rotation by which the piston is moved into the cylinder ampoule.

Abstract: A container for dispensing a solid deodorant and/or antiperspirant. The container comprises a housing, a platform, a dispensing member, and a level indicator. The housing has an open top end for dispensing the deodorant and/or antiperspirant contained therein, a bottom end, and a side wall. The platform is positioned within the housing for supporting the deodorant and/or antiperspirant. The dispensing member is mounted in the housing and attached to the platform for moving the platform from the bottom end of the container towards the open top end of the container for dispensing the deodorant and/or antiperspirant. The level indicator is provided on the platform for indicating an amount of deodorant and/or antiperspirant remaining in the container, the amount of deodorant and/or antiperspirant remaining being indicated by the position of the platform as it is moved within the housing.

Abstract: Pot comprising a body, a container, and a cover pivoted to the body, characterized in that the container (2, 32), closed by a movable wall (3, 33) insulating the substance from the exterior, communicates with the suction side of an incorporated measuring pump (12-17, 40, 39) which delivers the substance into an incorporated receptacle (15, 56) which is covered at rest by the cover (21, 34); and in that the reversible action of utilization, in a single movement engaging the cover, first of all clears the access to the receptacle and then actuates the pump.

Abstract: A fluid dispensing station includes a pneumatic clamp for easy and secure mating and un-mating of a supply syringe to the dispensing nozzle from which dots of fluid are selectively dispensed according to displacement of a plunger of the syringe. A syringe cover seals the distal end of the syringe during mating and provides access of pressurized air to the sealed syringe in order to displace the plunger. The piston rod of a pneumatic cylinder protrudes through the cover and into the syringe and serves as a follower which is maintained in engagement with, and follows the displacement of, the syringe plunger. The follower may be used to supplement the primary plunger displacement force, which is supplied by the pressurized air applied to the clamped and sealed syringe via the cover, by applying air at the same or a different pressure to the piston of the follower cylinder. The follower also can be used in indicating a low level state of the adhesive to an attendant.

Abstract: A valve, particularly useful in a fire extinguisher, includes a valve housing having a through bore. A valve stem is disposed within the bore and is axially moveable between a first position, a second position, and a third position. The valve stem includes a seal adjacent to the second axial end for sealing with the first section of the bore. A cap is disposed within the second section of the bore and is axially moveable between a first position and a second position. The cap includes a seal for sealing with the bore when the cap is in the first position. The cap seal is impermeable to solids and permeable to gas when the cap is in the first position.

Abstract: An improved powder feeder having a hopper with an opening in its bottom. A resiliently deformable element is positioned in the opening of the hopper. The element has a flexible exterior dimension and is suitably positioned in relation to the opening to prevent the free flow of material through the opening. The element is mounted on an axle having an axis of rotation. The element is capable of carrying a metered volume of material through the opening as it is rotated. The axle is connected to a variable speed motor. As the element turns, the material flows into the element and moves through the hopper opening in precisely metered amounts relative to the volume and the speed of rotation of the element.

Abstract: A pharmaceutical dispenser includes a housing (4), containing two pharmaceutical cartridges (32,34), slidably mounted to a sliding body (100). A replaceable needle manifold assembly (10) is mounted to the housing and fluidly couples the cartridges with a hypodermic needle at a common exit. The sliding body is part of a reciprocating drive assembly used to drive a pair of drive stems (88) against the pistons (96, 98) of the cartridges, thus forcing predetermined amounts of the pharmaceuticals out the needle. The movement of the sliding body between retracted and post-injection positions remains constant. However, the amounts and proportions of the pharmaceuticals injected during the delivery stroke is chosen by the user using stroke adjusters (182) carried by the sliding body. A bistable status flag (186) is mounted to the sliding body to indicate when the sliding body is in the post-injection and the retracted positions. The dosage adjustments are made when the sliding body is in the post-injection position.

Abstract: Hand-held tear gas canisters and personal security devices utilizing same employ a tactile device, preferably in the form of an elongate ridge or rib, is provided on the outer surface of the canister, or on a holster which receives the canister, to facilitate orientation of the canister with a gas discharge nozzle thereof pointing away from the user. In use, by feeling the position of the ridge or rib, the user will be aware of the direction of gas discharge and can thereby avoid misdirection of the gas.

Abstract: A self-contained self-muffled pneumatic gun for dispensing one or two combinable flowable materials from a prefilled package or cartridge. The gun has a first hollow chamber for retaining the package in fixed relation, the package containing the materials to be dispensed and either having a dispensing valve thereon or not as known in the art. A second hollow chamber of the gun retains an axially-movable hollow tubular piston for pneumatically forcing discharge from the gun and through a metering, mixing and/or dispensing nozzle. The hollow piston has a quick-release valve mounted internally in its head portion for rapid release of pressurized gas internally of the gun body for its relatively quiet operation. Internal release of the gas pressure within the head portion serves to prevent noisy operation of the gun. The gun is capable of economical manufacture with the valve components being formed from essentially non-machined moldable components.

Abstract: An improved economically disposable dispensing unit is provided for dispensing various measured amounts of a liquid or other freely flowing substance from a container. The position of a movable sleeve within a cup-shaped housing determines the measured amount which will be trapped within a dispensing chamber defined by the housing. The sleeve may be adapted for sliding movement to change positions, or, as an alternative, the sleeve can have a foldable, accordion-like structure which allows adjustment of the sleeve position. The invention can be configured as a disposable, one-piece dispensing unit, wherein one of a plurality of one-piece units, each having a different sized sleeve integrally formed therein, is chosen to select a particular measured amount. The dispensing unit is attached to a container by a flexible spring loop or a plurality of gripping fingers.

Abstract: The dispensing appliance customarily built in "pistol form" for double cartridges with plunger has a pressure medium-driven cylinder/piston unit with rams extending from the piston for the forward drive of the plungers. The problem here consists in that during the piston forward thrust the reaction forces from the plungers acting upon the rams can be very different (different viscosities of the substances contained in the two cartridge cylinders and/or different cross-sections of the cartridge cylinders). In order to prevent "tilting" or jamming of the piston, the invention provides in a cylinder space a rigid longitudinal guide between both cylinder floors against which the piston is slidingly supported with a longitudinally extended guide bore. The longitudinal guide can simultaneously reinforce the cylinder and further lead the pressure medium into the pressure chamber behind the piston by way of a longitudinal channel.

Abstract: A container for viscous materials having volatile components is constructed to have a substantial transparency. The container includes a tubular housing having first and second closing structures at opposite ends. The housing may be entirely constructed of amorphous nylon, but preferably is formed as a laminate having a relatively thin inner lining of high barrier amorphous nylon and an outer sleeve of low barrier plastic, such as polyethylene teraphthalate. The container is adapted for caulking compounds wherein the first closing structure is an end wall, nozzle and snout assembly and wherein the second closing structure is defined by a movable piston slideably received in the housing interior.

Abstract: A dispenser for pasty or flowable media comprises a container with a delivery opening, a piston displaceably guided in the container on the wall thereof and forming the lower seal for the filled material, as well as a guide part formed by the container wall on the otherside of the piston. To permit a portionwise or continuous delivery of the filled material, the container is provided on its guide poart with an axially parallel, downwardly open slot corresponding to the total stroke of the piston and a double-walled slide is provided for the displacement of the piston and which roughly corresponds to the slot length and whose two walls engage on the container wall externally or internally on either side of the slot and whose inner wall is connected at its upper end to the piston and at the lower end to the outer wall.

Abstract: A pneumatic dispenser gun for two part viscous materials comprising two parallel containers containing the two materials and a pneumatic cylinder 12 whose axis is parallel to the axes of the two containers and which contains a piston 15 having symmetrically mounted piston rods 17, 18 extending through the end wall of the cylinder into the containers to expel the contents of the two containers simultaneously through a common outlet passage. A further rod 19 extends from the piston parallel to the piston rods but outside the containers to provide an indication of the amount of contents remaining in the containers and a handle for returning the piston to its initial position.

Abstract: A dosing syringe has a cylindrical syringe body which at its tapering end has a dispensing orifice and at its other end a stepped cylindrical enlargement with two opposing handles. A recess is located below each handle, and a piston is inserted into the cylindrical syringe body. The piston is in contact with a dosing plunger having an external thread. Two threaded sides are arranged around the plunger and each threaded side has a positioning projection introduced into the recesses of the enlargement. According to the invention, the piston is connected to the dosing plunger by a spring retainer connection and the threaded sides have an outside groove in which an O-ring is inserted in countersunk fashion to hold the two threaded sides together. As a result, the piston-dosing unit can be prefabricated and introduced as a complete unit including the threaded sides into the enlargement of the syringe body where it is fixed simplifying the production technology of the dosing syringe.

Abstract: A device for determining the direction of a fluid spray pattern issuing from a fluid nozzle prior to flowing through the nozzle includes a body in the form of a template or a jig releasably attachable in a predetermined orientation to the nozzle tip. The body includes a pair of angularly related adjustable arms having axes which intersect the nozzle aperture and which extend such that the central axis of the nozzle bisects the angle between the arms. By applying the device to the nozzle tip in predetermined orientation, the arms define the lateral extremities of the spray pattern.

Abstract: A pump for delivering precisely metered discrete quantities of solvent containing suspended solids in rapid cycles. The pump ejects the solvent from a cylinder in amounts proportional to discrete longitudinal movement of a piston inside the cylinder and eliminates internal valves that may become clogged.

Abstract: Hand-over tear gas canisters and personal security devices utilizing same are herein disclosed. A tactile element, preferably in the form of an elongate ridge or rib, is provided on the outer surface of the canister, or on a holster which receives the canister, to facilitate orientation of the canister with a gas discharge nozzle thereof pointing away from the user. In use, by feeling the position of the ridge or rib, the user will be aware of the direction of gas discharge and can thereby avoid misdirection of the gas.

Abstract: An instrument for injecting and withdrawing fluids including an elastomeric membrane in communication with the chamber of the instrument from which fluids are injected or into which they are withdrawn, in which the membrane expands and contracts with increasing and decreasing pressure in the chamber, providing both a visual and a tactile indication of the pressure of injection or withdrawal, and a pressure relief.

Abstract: In a butter dispenser having a hollow body for receiving a stick of butter and having a closure member at one end, a selectively, rotatable shaft is provided having first a bearing surface for rotating freely within the hole in the closure member, a threaded plug for engaging the threads in the closure member and causing the shaft to be removed through the hole in the closure member when the shaft is rotated in a first direction, and having the remainder of the shaft threaded in a second direction to provide a rotating screw drive force against a piston arranged for travel along this remaining portion of the shaft when the shaft is rotated in a second direction.

Abstract: A dispenser for dispensing controlled quantities of liquid from a bottle includes a piston, which is movable in a cylinder and serves to suck and discharge an adjustable quantity of liquid. The cylinder is secured to a valve block, which contains a suction valve and a discharge valve. A cylindrical sleeve surrounds the cylinder and defines an annular clearance therewith. To change the length of the stroke of the piston and the quantity of liquid which is to be sucked and discharged depends on the stroke length, an adjustable stop and a fixed stop, which is engageable with the adjustable stop and are accommodated in the clearance.