Abstract: A device for dispensing a predetermined amount of fluid material from chambers within a cartridge. This device includes a housing, a trigger pivotably connected to the housing and a plunger having teeth on a top side thereof entering the housing and passing through an upper part of the trigger. A ratchet is attached to the upper part of the trigger and engaged between the plunger teeth. When force is applied to the trigger, the ratchet is pushed forward, causing the plunger to also move forward, dispensing the contents of each of the chambers within the cartridge. When the trigger is released, the ratchet moves backward causing the plunger to move with the ratchet. The plunger moves backward a short distance until the force applied by the ratchet is overcome through frictional engagement between the plunger and a frictional brake mounted on the housing, at that point the ratchet slides over the next tooth behind it on top of the plunger.

Abstract: A method for the advance of two or more rods against a resistance, as it is typically required in dispensing appliances for multiple component dispensing cartridges, consists in that thrust rods are seized by clamping levers in a traveller and then are advanced along with the traveller. The thrust rods extend through guides in traveller on both sides of the respective clamping lever as well as through a bore in the clamping lever. By a transmission of the advancing motion to the clamping levers, which is offset with respect to the bore, the latter are pivoted perpendicularly to the bore, whereby the thrust rods are clamped in the bores and are driven along. The clamping levers are arranged in such a manner that the torsional moments of the clamping action are essentially equal and opposed, whereby no torsional moment acts upon the traveller as a whole.

Abstract: Dispensing device for high viscosity compositions includes an elongate drive rod movable in a linear direction for dispensing a high viscosity composition; a driving grip for receiving the drive rod therethrough and for engaging and driving the drive rod in the linear direction; a trigger pivotally secured to an axle and including a hand gripping section for actuating the trigger and a first link section; a second link pivotally secured to the first link section of the trigger through a toggle axle spaced from the axle of the trigger, whereby the second link and the first link section are movable from a first, retracted condition prior to manual actuation of the trigger to a second, extended condition upon manual actuation of the trigger to impart a high thrust to the second link. The second link is operably connected to a force transmitting member engaging the driving grip whereby the high thrust is imparted to the force transmitting member and the driving grip.

Abstract: An apparatus for dispensing two flowable substances in a user selectable ratio having a container and a selector member. The container includes a dispensing end, a flexible continuous outer wall, and a flexible inner diaphragm separating the container into two generally equal chambers for each receiving a different flowable substance. Each of the chambers includes an end generally open proximate the dispensing end of the container. The selector member is disposed between the open ends of the chambers and the dispensing end of the container and includes a single opening extending therethrough.

Abstract: An applicator assembly is provided for concurrently dispensing plural flowable component materials in a mixed state. Moreover, the applicator assembly is more versatile and is particularly useful when one or more additional components are to be concurrently dispensed with the basic two component materials. The applicator assembly permits dispensing of additives with basic two part mixtures, and allows the application of three or more part chemical systems. A multi-component applicator assembly is described which is convertible between different component number multi-component arrangements, and includes a barrel assembly having at least one barrel detachably connected to the other barrels, at least two of which are fixed to one another.

Abstract: A microingredient dispenser for delivering a continual supply of feed additives from supply cartridges to animal feed. The dispenser includes a frame, first and second hoppers, first and second dispensing stations, a plunger drive mechanism, first and second ingredient receiver couplings, first and second cartridge retainer mechanisms, and control means for coordinating the movement of bar-coded cartridges and a drive mechanism. The hoppers hold multiple cartridges for feeding into the dispensing stations. The ingredients from the cartridges are delivered from the cartridges at the dispensing stations beneath the hoppers. The ingredients are dispensed from the cartridges as the plunger drive mechanism pushes the plungers within the cartridges. The cartridge at one dispensing station is emptied while the cartridge at the other station is being readied for dispensing when the first is empty. In this manner, a continual flow of ingredient can be maintained.

Abstract: A positive displacement material mixing, metering and dispensing device having a housing with a pair of material inlet ports, and a pair of material outlet ports which are in communication with a pair of holding cavities, and a pair of valve chambers. A spool is slidably mounted in each of said valve chambers. An air actuated piston is in contact with opposite ends of the spools. Each spool has a reduced diameter central portion which communicates with a respective one of the material holding cavities at all times, but is in communication with the inlet and outlet ports only at discrete positions in the operating cycle and is never in communication with both the inlet and outlet ports simultaneously. One end of a pair of push rods moves into and out of the material holding cavities, with the other ends of the push rods being simultaneously actuated by an air piston.

Abstract: The apparatus is adapted to be held in one hand of an operator from mixing components of a composition packaged as two or more individually stable components of substantially equal volume and viscosity each in a receptacle having a closure made of a material which can be ruptured, and to dispense the mixed composition by a manual operation. The device comprises a mixing housing, separate chambers for the receptacles, piercing means for piercing the receptacles, plunger means for expelling a component from the chamber into the mixing region, a mixing element in the mixing region, and a passageway which contains means for actuating the mixing element and through which the mixed composition may be expelled from the mixing region.

Abstract: A cartridge has a multiple casing comprising an outer casing (1) with a front end piece (2) for receiving an application nozzle and an annular rear thrust wall (4) mounted slidingly in the outer casing (1), and at least one inner casing (5) with a front end piece (6) extending inside the end piece (2) of the outer casing (1) and a disc-shaped rear thrust wall. Shoulders and rib (8, 14, 16) for connecting the two outer (1) and inner (5) casings together ensures their mutual locking in axial and radial positions. A drive assembly is structured like the cartridge. The invention is well suited to the application of sealing resins.

Abstract: A disposable multi-cavity refill cartridge, for use with a reusable base and a reusable dispensing head for the simultaneous coextension of at least two flowable materials. The disposable refill cartridge has two hollow and separate parallel inner cylinders for each containing a flowable material. The inner cylinders have a first generally open top end which can be temporarily sealed until the refill cartridge is combined with a reusable dispensing head. The second or bottom end of the refill cylinders telescopically and slidingly accommodate parallel piston heads which are compressibly engageable with piston rods of a reusable base. The piston heads ride sealingly along the interior walls of the inner refill cylinders and when compressed by the piston rods, they force the flowable material to flow out of the refill cylinders and through the outlet means of the dispensing head.

Abstract: In a manually operated dispensing appliance for a double dispensing cartridge for two-component substances, said cartridge in plugged onto said appliance by means of a flange. For the purpose of a solid attachment of said cartridge to the housing of said appliance, a securing flap is provided which is hinged on said housing and comprises a locking portion which engages behind the upper edge of said attaching flange as well as a portion which engages in a recess of said housing and whose end is shaped as an articulation. A manual dispensing appliance having such a nonlosable securing flap is more reliable in operation and will not drip when the trigger lever is released.

Abstract: A dispensing and mixing apparatus for simultaneously dispensing from a cartridge into a static mixing element components which harden when mixed. The components exit the cartridge into the mixing element without intermixing as the components leave the cartridge. The initial intermixing of the components takes place within the mixing element. The cartridge is reusable since the components do not become mixed and harden as they come out of the cartridge. The chambers in the cartridge are of semi-cylindrical configuration and have rounded corners. Ribs can be provided on the cartridge for stiffening the cartridge from deforming under extrusion.

Abstract: A disposable refill cartridge, for use with a reusable base and a reusable dispensing head for the simultaneous coextension of at least two flowable materials. The disposable refill cartridge has a hollow inner cylinder for containing a flowable material. The inner cylinder has a first generally open top end which can be temporarily sealed until the refill cartridge is combined with a reusable dispensing head. The second or bottom end of the refill cylinder telescopically and slidingly accommodates a piston head which is compressibly engagable with a piston rod of the reusable base. The piston head rides sealingly along the interior walls of the inner refill cylinder when compressed by the piston rod forces the flowable material to flow out of the refill cylinder and through outlet means of the dispensing head. Once the flowable material has been expended, the refill cartridge can be discarded and a new one can be used in conjunction with the reusable base and dispensing head.

Abstract: A dispensing cartridge having a retaining flange connected to an end thereof, the retaining flange including at least two flat portions disposed in parallel planes, and a plurality of webs connecting the flat portions. The retaining flange is designed as a box construction with outwardly open hollow spaces having constant or increasing rectangular cross-sections in a direction perpendicular to the dispensing flow direction. The webs connecting the flat portions may be in two sets, with the webs in one set extending perpendicular to the webs in the other set. The retaining flange may be manufactured by injection molding. The box construction design of the flange requires only slightly more material than a single retaining flange, yet provides a gain in stability that allows simpler and more economical adapters of the dispensing appliances to be used.

Abstract: The invention relates to an apparatus for simultaneous injection of two different kinds of preparations in a preset proportion.

Abstract: The disclosed tool dispenses material from a tubular cartridge having a front closure wall and nozzle, and having a wiper closing an open cartridge end and slidable forwardly within the cartridge. A plunger sized to fit within the cartridge is carried on a rod for moving the plunger axially within the cartridge against the wiper. The plunger has a conically ramped surface expanding from its smallest adjacent a front shoulder to its largest adjacent a rear shoulder, and rear and front peripherical guide surfaces extended endwardly from the radial shoulders to cooperate with the cartridge.

Abstract: A postmix juice dispensing system for dispensing a finished beverage directly from a pliable beverage concentrate having an ice point at or near freezer temperatures, with little or no conditioning. The system preferably uses a one-piece, unitary, disposable package that includes both the concentrate container and a positive displacement metering pump. The disposable package is placed in the dispenser which automatically connects the pump to a pump motor. A mixing nozzle is connected to the metering pump and a water line is connected to the mixing nozzle. Upon pushing a load button, the dispenser automatically feeds compressed air on top of a piston in the concentrate container to force concentrate into the pump. The dispenser automatically reads an indicator on the package to set the pump speed in response to the type of concentrate in the package. The dispenser requires no cleanup or sanitization and allows rapid flavor change.

Abstract: Dispensing apparatus is provided for simultaneously dispensing metered quantities of a plurality of materials into a common receptacle. Pump modules each containing a plurality of individual pump members are arranged in a rectangular pattern, between a base plate and a drive plate. The drive plate is raised and lowered, toward and away from the base plate, by a pair of drive screws. The plurality of individual pump members are thus simultaneously operated to dispense different materials into a common receptacle, at the same time.

Abstract: An apparatus proportions and dispenses at least two different plastic materials such as, two component adhesives or sealants in which the components are stored separately from one another before use and are mixed with one another only for use. The apparatus includes a multichamber cartridge made from injection-molded plastic with at least two cartridge tube wall parts located one inside the other to form at least two chambers that receive one material component each. An end wall part is located at the anterior end of the cartridge tube wall parts on which a mouthpiece for dispensing the plastic material components from the cartridge is formed. Piston elements are inserted in the rear end of the cartridge tube wall parts to express the material components. The end wall part is formed as a separate head piece and the cartridge tube wall parts likewise are formed from two separately manufactured parts. Snap connections are provided to connect the cartridge tube wall parts with the head piece.

Abstract: A completely portable trigger-operated dispensing gun which employs a simple and reliable double reduction gear system for driving one or more axial plungers with an extreme dispensing force, said force being sufficient for dispensing highly viscous materials such as epoxy resin and hardener from a conventional twin cylinder epoxy cartridge having an elongate mixing nozzle.

Abstract: A cartridge has a multiple casing comprising an outer casing (1) with a front end piece (2) for receiving an application nozzle and an annular rear thrust wall (4) mounted slidingly in the outer casing (1), and at least one inner casing (5) with a front end piece (6) extending inside the end piece (2) of the outer casing (1) and a disc-shaped rear thrust wall. Shoulders and ribs (8, 14, 16) for connecting the two outer (1) and inner (5) casings together ensures their mutual locking in axial and radial positions. A drive assembly is structured like the cartridge. The invention is well suited to the application of sealing resins.

Abstract: Apparatus for dispensing includes a cartridge holder and main body having a generally circular central portion with three perpendicular flanges extending from one side and an elongate portion extending from the other side. A drive means on the elongate portion mounts a U-shaped drive rod for axial movement. Each flange includes a slot for receiving a pin formed on a replaceable generally cylindrical cartridge to act as a bayonet fitting. Viscous material is expelled from the held cartridge by driving the rod axially. A nozzle attachment has a primary section connected to the exit of the cartridge and includes a secondary section for holding a replaceable hardener tube, with the hardener being expelled by axial movement of a portion of the rod. The nozzle attachment includes a planar end surface for simple cleaning.

Abstract: A double syringe delivery system is disclosed for holding a pair of syringes in a manner so as to accommodate the simultaneous activation of the plunger of each syringe in order to effect simultaneous delivery of the contents of each syringe. The double syringe delivery system includes an elongated support member that is placed between the barrel of each syringe. The elongated support member has resilient, C-shaped clamps on opposite sides of the support member. The clamps are used for holding the syringe barrels of both syringes so that the syringe barrels will be held together in a parallel manner. Further, elongated support member and clamps hold the syringe barrels in a fashion that is slightly longitudinally offset from one another to permit the two syringe barrels to be held together as closely as possible. An interconnecting bridge member connects the two syringe plungers so that they can also be simultaneously activated even though they are also slightly longitudinally offset from one another.

Abstract: A multi-cavity dispensing refill cartridge to be used with a reusable base. The refill cartridge has two hollow, separate parallel cylinders for containing flowable material. The cylinders have a first generally closed end and a second end which accommodates piston heads. The piston heads are compressably engageable with piston rods of the reusable base. Relative compression of the piston heads and cylinders cause flowable material to flow toward the first end of the cylinders and towards the outlet in the closed end. The outlet include means for causing the flowable materials to flow toward each other at the outlet opening. The refill cartridge is provides with means for selectively, engaging the reusable base.

Abstract: An apparatus for mixing two fluids in precise proportions which includes a quantifying meter and a concentrate meter. The apparatus also includes apparatus connecting the quantifying meter and the concentrate meter to simultaneously operate the quantifying meter and concentrate meter. The quantifying meter includes a servo plunger that is elongated and further includes a piston and a sealing member. The piston and the sealing member are axially spaced and the quantifying meter also includes a servo piston having a central bore in which the servo plunger is disposed in coaxial relationship with the piston in sealing engagement with the central bore. The servo piston includes a pressure fluid entrance port and an axially spaced outlet bore.

Abstract: An apparatus for mixing and dispensing two-component substances comprises o cartridges 12, 13 with pistons 15, 16 which are displaceable in the cartridges and are advanced in common by an electrical motor via a magnetic clutch 30. When the motor is switched off and the clutch 30 disengaged, the pistons 15, 16 may be manually retracted and re-advanced by means of a handwheel 33. At the end of the manual retracting motion, the pistons 15, 16 entrain a shaft 18 which serves to drive a mixer head 14, so that when the pistons 15, 16 become free of the cartridges 12, 13, the shaft 18 disengages from the mixer head 14. The cartridges 12, 13 including the mixer head 14 connected thereto may then be removed as a unit from the apparatus and replaced by another unit in order to exchange the emptied cartridges or, with the cartridges being still filled partially, to use the apparatus for preparing a different substance.

Abstract: A syringe-dispensing system includes a housing containing at least one sealed bag of a fluid reactive compound and a nozzle in fluid communication with the housing for providing an outlet from the housing for the compound. A shaft disposed within the housing and attached to a handle for moving the shaft longitudinally within the housing is provided, along with apparatus for piercing the bag upon movement of the shaft in one direction. A piston enables forcing of the compound out of the housing through the nozzle upon movement of the shaft in an opposite direction.

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: The improved dispensing tool has linkage that includes a spring connected between a power ratchet and a wall restraining the material cartridge against plunger movement through the cartridge for discharging material, thereby allowing resilent independent plunger movement within the limits of spaced stops. When subjected to only static force conditions, the spring bottoms the linkage solid against one of the stops, to provide in-unison forward indexing of the plunger and ratchet drive rod. In the event plunger displacement occurs that is less than the expected in-unison indexing, the one linkage stop is gapped to subject the spring to additional dynamic force conditions that biases the plunger resiliently and continuously in the forward direction toward the restraining wall, up to maximum dynamic force conditions that bottoms the linkage solid against the other stop. The dynamic spring forces move the plunger forwardly within the cartridge for discharging the contained material.

Abstract: A device for filling one or more molds with flowable materials. The device includes several storage tanks (1) for the respective individual components, with each storage tank (1) being connected to one or more flow mixers (4) through a pump mechanism (2) and at least one valve mechanism (3), the casting port (5) of which flow mixers is connected to a mold (6). In order to enable both short inlet paths of the individual synthetic resin components and also a precise, uniform supply of the components to the flow mixers (4), the invention provides that the storage tank (1) and the pump mechanism (2) are combined into one structural unit.

Abstract: A variable proportion dispenser (2b) includes a housing (180) which houses two pharmaceutical cartridges (6b, 7b). A reciprocating drive assembly includes drive stems (36b, 37b) extending from the pistons (46b, 46c) of each cartridge, a sliding body (66b) mounted to the housing, and two one-way drivers (198, 232, 234) and threaded dosage adjusters (60b, 61b) carried by the sliding body. Each one-way driver drives the drive stem into the cartridge through a smooth drive surface to provide a continuous range of dose selections. The user can thus control the amount and proportion of each pharmaceutical dispensed during each delivery stroke for each dispensing cycle.

Abstract: A dynamic mixer comprises a cylindrical chamber portion 50 the rear end of hich is closed by a sealing plate 51 provided with conical pipe sockets 58, 59 adapted for being directly inserted into outlet openings of cartridges from which the pasty components to be mixed are supplied. Due to the closed structure of the mixer housing 50, 51, contamination of the device by the components and cross-contamination between them is avoided when the mixer is removed from the cartridges. Further, the direct connection of the mixer to the cartridges results in minimum travelling distances for the components, thus low friction losses, which is particularly advantageous in case of substances of high-viscosity.

Abstract: In a preferred embodiment, a system for dispensing semi-liquid materials in predetermined ratios, which system includes two cartridges having the same or selected different diameters, but proportional to the ratio of the materials to be dispensed, the cartridges being rigidly snapped together by interfitting male and female elements. In another aspect of the invention, there is provided a seal for a cartridge for dispensing semi-liquid material which seal includes a resilient wiping lip formed around the outer periphery of the seal which is forced against the inner surface of a cartridge by the flattening of the convex face of the seal. In a further aspect of the invention, there is provided a cartridge for dispensing semi-liquid material which cartridge includes grooves formed in the inner wall thereof extending inwardly a distance from the edge of the filling end thereof so that air may readily be expelled from the cartridge as the seal is inserted after filling of the cartridge.

Abstract: A double-barreled gun adapted to inject a two component epoxy into a hole to anchor a hardware element therein. The base resin and hardener components of the epoxy are stored in separate foil packs received in parallel barrels of the gun. The gun includes a removable mixing manifold having a pair of end caps which fit into the leading ends of the barrels and are joined to a manifold pipe to whose outlet is attachable a mixing nozzle. Mounted within the rear of each cap across a port therein is a cutting element. Slidable in each barrel behind the pack is a piston whose rod extends from the trailing end of the barrel. An operating mechanism effects concurrent advance of the pistons to an extent limited by a retractable stop member.

Abstract: A variable proportion dispenser (2) includes a housing (4) which houses two pharmaceutical cartridges (6, 7). A reciprocating drive assembly (10) includes a drive stem (36, 37) extending from the piston (46) of each cartridge, a sliding body (66) mounted to the housing, and two one-way drive devices (54, 55) carried by the sliding body. Each one-way drive device includes a threaded dosage adjuster (60 6I), and a reciprocating, one-way driver (58, 59) which drives the drive stem into the cartridge. The distance the reciprocating driver can move on the return stroke away from the cartridge is adjustable by changing the threaded position of the dosage adjuster within the sliding body to change if and when the opposed ends (98, 96) of the dosage adjuster and reciprocating driver disengage during the return stroke. During the next delivery stroke, the separated opposed ends (98, 96) do not contact for an initial portion of the stroke.

Abstract: A dispensing assembly includes a seal that is induction-bonded to an outlet of a container. A cap is detachably connected to the container over the seal to protect the seal during shipping. Once the cap is removed, the seal can be peeled away from the outlet. The absence of the seal can be observed when an attempt is made to reconnect the cap to the container after the seal has been removed.

Abstract: A dispensing cartridge having two storage cylinders with different cross-sectional areas and each having a respective dispensing opening. A connecting piece provided in front of the storage cylinders has a common outlet for the substances contained in the storage cylinders and dispensing channels which are connected to the respective dispensing openings. In a preferred embodiment, the dispensing channel connected with the dispensing opening of the storage cylinder with a smaller cross-section is adapted with an insert so that the ratio of the cross-sections of the dispensing channels corresponds to the ratio of the cross-sections of the associated storage cylinders.

Abstract: A control structure for a pneumatic sealant gun, which comprises a handle and a sizing assembly; both of them are able to be assembled together in a detachable manner so as to adapt to different type of sizing assembly. Both front and rear hoods of the cylinder of the sizing assembly are mounted with two connectors respectively; each connector is then connected to a connector on the rear side of a valve switch in the handle. The cylinder includes a piston therein with a guide shaft extended to the front hood. The handle is furnished with an air-supply trigger assembly to control the intake and exhaust of the sizing assembly of the pneumatic sealant gun.

Abstract: The dispensing apparatus is used with twin cartridges that have two axially parallel storage cylinders and a nozzle piece connecting them. The apparatus has two plungers, one for each storage cylinder, guided to move longitudinally, and a holder for interchangeable cartridges which has a guide for the nozzle piece of a cartridge. To allow the use of two different types of cartridges, with cylinders of different diameter ratios, the holder is provided with a retention device designed to align the axes of the storage cylinders with those of the plungers; the retention device has separate grippers associated with each plunger, and these are dimensioned for different cylinder diameters. Different cartridges can be aligned between one of the grippers and the cylinder it grips, in conjunction with the guide for the nozzle piece, while the other gripper leaves the other cylinder free.

Abstract: It is often necessary to manufacture casting masses out of several components which must be homogeneously mixed in a specific ratio. It can thereby happen that such casting masses harden so quickly that they must be processed in the shortest time possible in order not to react with one another or harden already in the mixing area or in the pipelines and thus result in the possible destruction of the device. The components are in the arrangement of the invention each moved by a pump out of the respective storage tanks into a synchronous dosing mechanism which consists of a dosing chamber for each component, from where the respective now dosed amount of each component is moved with the help of a dosing piston into a flow mixer, with the dosing pistons being thereby mechanically connected and operated by a common drive, and the flow mixer moving the now ready casting mass directly into a mold. The mixing ratios can in this manner be well maintained.

Abstract: A fastener system to join lightweight panels such as honeycomb or foam core panels. The fastener system comprises a unique hollow, threaded fastener pin (12) and drive assembly (18). The drive assembly (18) attaches to an electric drill and is made up of a cartridge housing (14) for carrying a disposable, dual piston (epoxy resin and hardener) cartridge (20), and a plunger assembly, clutch mounted to the cartridge housing (14). The nose (62) of the cartridge (20) is adapted to receive the proximal end of the pin (12). The plunger assembly (16) mounts to the chuck of the drill. The panels are aligned and the pin (12), mounted to the nose (62) of the cartridge housing (14), is placed against the panels at the point to be joined. The drill is activated and the pin (12) is threaded in until its flared, distal end (26) is seated flush against the skin of the panel.

Abstract: A finger actuated dispenser for a multi-component reactant toothpaste, or other fluent materials. The dispenser preferably comprises at least two coaxial cylindrical product reservoirs wherein the uppermost end of each product reservoir communicates with the other reservoirs through generally coaxial nozzles. The lowermost end of each reservoir is equipped with a concentric piston connected rearward of its leading face to the rearward portions of the other pistons by a plurality of radially oriented spokes having knife edges on their forwardmost surfaces. The knife edges taper outwardly at an acute angle relative to the longitudinal axis of the reservoirs from the interior of the innermost reservoir toward the outermost reservoir, thereby outwardly expanding the innermost surface of the innermost reservoir wall as the pistons and knife edges are advanced upwardly relative to the product reservoirs.

Abstract: In the epoxy ejection gun disclosed herein, a bridge member which couples and drives a pair of push rods includes a forward facing seat or socket, e.g. of conical shape. A lead nut engageable with a rotatable lead screw is provided with a surface matching the seat. An adjustable spring is provided for biasing the interfitting parts. Rotation of the lead screw causes the lead nut to advance driving the push rods but pressure is controlled by the selected value of biasing force on the matching surfaces, excessive force allowing the lead nut to rotate with the lead screw rather than to advance.

Abstract: Portable apparatus for dispensing adhesive materials from cartridge type containers using axially directed plungers which are driven by a manually operated hydraulic pump supplying pressurized fluid to a hydraulic cylinder. The output of the hydraulic cylinder is coupled to a pair of plungers that engage the cartridges to force the adhesive materials out through a mixing nozzle.

Abstract: An improved single and double cylinder hand-operated caulking gun having a direct plunger drive mechanism including a bearing assembly for increasing trigger leverage to allow delivery of a dense composition at a high volume and flow rate. The caulking gun of the present invention includes an adjustable trigger stop for minimizing hand fatigue during prolonged use, quick-release pistons, and a dual-cartridge restraining screw.

Abstract: A process and apparatus is disclosed for the mixing and direct emplacement of a bone cement formed from two components, one liquid and one powder, comprising the steps of storing the two components separately in a multichamber container, opening the liquid phase container within one of the said chambers which is not in communication with the outside atmosphere, setting up a negative pressure within the chamber containing the powder phase, causing aspiration of the liquid into the chamber containing the powder, mixing the two phases, compacting the paste obtained, injecting the paste into a cannula and extruding the paste with direct emplacement of the cement.

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 two 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 the 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 dispenser for dispensing two components is disclosed which comprises a drum 10 in which a tube 20 is supported. A first piston 12 is arranged within the drum 10 and has an opening 22 through which the tube 20 extends. The opening is provided with a plug 80 which has an aperture also through which the tube 20 extends. The plug supports a blade 32 which bears on a second piston 40 arranged within the tube 22. The plug 80 is fixed relative to the piston 12 so that it and the blade 32 move with the piston 12. During movement of the piston 12 the blade 32 slices the tube 20 and bears against the second piston 40 so that the first piston 12 and the second piston 40 move in a fixed manner as a single unit. During movement of the pistons 12 and 40 the two components are dispensed from the drum 10 and the tube 22 in a particular ratio depended upon the volume displaced by movement of the pistons 12 and 40. The dispensed components can therefore be mixed together in the predetermined ratios.

Abstract: A composition is provided adapted for a dual chamber (12, 14) applicator 10 having a common mixing zone 42, the composition comprising a low viscosity side A liquid mixture of a hydroxyl functional moiety component and at least two isocyanate components thixatropically reactive with amines, and a side B of at least two amines differentially reactive with said isocyanates in side A for a reaction first to a relatively low viscosity mass and thereafter to a relatively high viscosity mass as a function of time in passing through and then out of the applicator mixing zone 42.

Abstract: In dispensing apparatus for operating double cartridges with holding flange, a front-face retaining guide with slide-in opening on one side for the holding flange is provided. The problem arises of ensuring effective anchoring between apparatus and cartridge in order to prevent deformations of the holding flange or of the entire cartridge when, for dispensing the cartridge content, the two dispensing plungers of the apparatus are moved out of the apparatus front and push delivery pistons forward which are inserted into the cartridge cylinders. For this purpose, the retaining guide is continuous on both sides of a straight line which connects the centers of both plungers. The slide-in opening extends transversely to the mentioned straight line. Due to this arrangement, the holding flange is rigidly held in the retaining guide, i.e. each of the cartridge cylinders is anchored via the flange at two diametrically opposed locations.