Abstract: A dental product is provided packaged in a telescopically arranged multi-cavity dispensing container having at least two cylinders in an upper body thereof. Peroxide and baking soda are placed as active ingredients in separate respective semi-solid streams, each stream being in separate ones of the cylinders. Uniform dispensing of each stream to deliver relatively equivalent ribbon length of each stream by incorporating a synthetic linear anionic polycarboxylate to adjust viscosity. Preferred polycarboxylates are homopolymers of acrylic, methacrylic and maleic acids, most especially a copolymer of vinyl methyl ether and maleic acid or anhydride.

Abstract: Apparatus comprising a housing (1) for receiving at least one storage cartridge for the product with a rear thrust wall for the product, a thrust piston (2), a drive comprising a front sprocket (5) for driving the piston (2) by friction, actuated by an intermediate feed rod (6) driven by a motor (3) in a reciprocating motion, and a control lever (4). The drive is adapted to effect any desired application of the product by a single actuation of the control lever (4).

Abstract: A caulking gun and cartridge combination is provided with afterflow prevention. The cartridge has a tubular body, a forward dispensing opening at a forward end of the tubular body, and a backwall movably disposed within the tubular body. The caulking gun has a trough for receiving the cartridge, and a piston movable parallel to the trough. A trigger handle is used for pushing the backwall forward within the tubular body and causing a reduction of volume within the chamber in the cartridge. The backwall slides substantially in a contact-less manner within the tubular body, preferably by way of a reduced diameter of the backwall relative the inner diameter of the tubular body, so that it is pushed backwardly when the body retracts radially after actuation. Alternatively, the cartridge body may be prevented from expanding or may even be actively squeezed so that afterflow caused by the volume reduction of the relaxing tube body is safely prevented.

Abstract: A reducible-volume cartridge for holding a viscous substance for use in combination with a dispenser of a pump-type utilizing a sub-atmosphere pressure to effect withdrawal of a predetermined amount of the substance from the cartridge for ejection through the dispenser, the cartridge having a hollow, annular body with identical ends, and a floating piston disposed for axial movement in a sealing manner within the cartridge thus forming a reducible chamber within the cartridge, the chamber holding the viscous substance on the side of the piston facing the dispenser, with the opposite side open to the atmosphere; the cartridge optionally having a wall formed midpoint its length to form a pair of chambers, with a pair of pistons disposed for axial movement, each within a chamber and each initially disposed adjacent the wall, the body and wall of the optional cartridge having a passage formed therein to expose each chamber to the atmosphere; either cartridge usable with the dispenser to discharge the substance fr

Abstract: A device suited for dispensing a dental substance comprises a cartridge 20 or receiving the substance, with a curved dispensing nozzle 22 disposed at the front end and a flange 21 of octagonal cross-section provided at the rear end of the cartridge. The flange 21 serves to engage a slide-in socket 16 of an applicator 10 which includes a piston rod 12 for advancing a dispensing piston 23 disposed in the cartridge 20. In the retracted position of the piston rod 12, the cartridge 20 may be laterally inserted into the slide-in socket 16 of the applicator 10. The socket has two parallel walls spaced by a distance which is between the largest and the smallest diameter of the octagonal flange 21.

Abstract: A two component cartridge is attached to a dispensing appliance with a coding to enable proper attachment. The cartridge has a flange with a coding cutout. The dispensing appliance has a holder for receiving the flange. The holder has a coding protrusion that is complementary with the coding cutout. This cartridge has outlets with a coded attachment for attaching accessories. The coding feature facilitates quick and easy attachment of accessories, such as a mixer or cap to the cartridge outlets.

Abstract: A pneumatic cartridge expressing device is shown for expressing cartridges containing viscous materials. The device has a holder that is axially longer than the cartridge, and a cap that is sealingly fitted over one axial end of the holder with a piston guided within the cap and forced by compressed air against either the one axial end of the holder or against one axial end of the cartridge. Compressed air is provided through an opening in the piston to pressurize the cartridge, and in the case where the piston seals against the one axial end of the holder, also passes into an annular gap between the cartridge and the holder to prevent bulging of the cartridge during expressing of the cartridge. Compressed air is provided through a separate opening in the cap to the annular gap in the case where the piston seals against one axial end of the cartridge.

Abstract: In space exploration, an attitude control engine or a thruster may have an extended period, such as years, of inactivity prior to being required to complete a desired mission. The fuel for this mission is contained in a fuel tank for the same extended period of time and tends to corrode elastomeric components. To isolate the fuel from elastomeric components during the storage period, the fuel tank has a metallic shear seal. When actuated, a piston ruptures the shear seal and delivers the fuel to a power plant. A shear seal that is unitary with the inner walls of the fuel tank eliminates the need for an interfacial weld that may constitute a shear seal failure site.

Abstract: A grease gun device includes a cock body having a piston cylinder and a slot joint. The piston cylinder also includes a seal washer opening and an outlet opening spatially disposed from the seal washer opening. A piston is reciprocatingly engaged in the piston cylinder for moving grease from the slot joint to the outlet opening, wherein a valve mechanism selectively allows grease from the piston cylinder to pass through the outlet opening. A grease supply barrel having a grease opening is engaged with the cock body to supply grease to the piston cylinder, and a sealed piston closes the other end of the grease supply barrel. A jacket is mounted about the grease barrel and connected with the cock body, wherein the diameter of an outermost periphery of the grease barrel is less than an inside diameter of the jacket, such that the grease barrel does not overlap the jacket. A rear cover engages the far end of the jacket.

Abstract: An electrically actuated material dispensing gun is disclosed having a body including a handle section and an elongate cartridge support section extending outwardly from the handle section. The cartridge support section includes a cartridge support space and an apertured end wall for receiving a cartridge dispensing nozzle and for dispensing force resisting engagement with a dispensing end of a cartridge positioned in the space. A reciprocatable push rod is carried by the handle section and axially aligned with the space for force transmitting engagement with a piston which in one embodiment is of unique construction. An electric motor is mounted in the handle section. A drive element is rotatively mounted in the handle section and in positive drive, mechanically interconnected, relationship with the rod. The drive element is normally freely rotatable in response to axial motion of the rod. A power train including a multi-stage planetary axially aligned with and connected to the output shaft of the motor.

Abstract: A paste injector gun, especially adapted for injecting bone cement, has first and second mechanical advantages. In a first embodiment, the first and second mechanical advantages are produced by two fulcrums engageable during different portions of the trigger stroke. In a second embodiment, the first and second mechanical advantages are produced by a fixed fulcrum and a rotatable fulcrum. The first mechanical advantage is greater than the second such that the first facilitates pressurizing the bone cement and the second facilitates high volume dispensing of the bone cement. The injector gun also includes a pair of U-shaped slots. One of the slots is sized to accept a large cement cartridge and the other slot is sized to accept a small cement cartridge. An alternative embodiment provides a hinged cartridge retaining gate for closing the U-shaped slots for positive retention of the cartridge.

Abstract: A product dispenser includes a cartridge containing a product; a housing having a sidewall defining an interior space for receiving the cartridge; an access cutout formed in the sidewall for installing and removing the cartridge in the interior space; and a ram and plunger structure associated with the housing for dispensing the product from the cartridge.

Abstract: A product dispenser, comprising a cartridge containing a product; a housing having a base portion and a cartridge receiving portion movably mounted to said base portion, said cartridge receiving portion having a sidewall defining an interior space for receiving said cartridge; access means defined by said sidewall for installing and removing said cartridge in said interior space; and means associated with said housing for dispensing said product from said cartridge.

Abstract: The present invention provides:a method for the feeding of a coating, which comprises:(1) a step of fitting a cartridge filled with a predetermined coating, to an automatic coating device or an apparatus capable of feeding a coating to an automatic coating device, and(2) applying an external pressure to the fitted cartridge to feed the coating in the cartridge, to a coating gun; anda method for the application of a top coating onto an automobile body, which comprises applying, onto an automobile body which is a material to be coated, a top coating fed to a coating gun by the above-mentioned method for feeding of coating.

Abstract: A caulking gun which is similar to a conventional caulking gun in all respects except that it is reduced in length, and accepts a caulking compound cartridge with a tube length preferably approximately one-half the length of a conventional cartridge tube. The caulking gun can fit into tight spaces such as cupboards, closets, behind doors, etc.

Abstract: The device for mixing and discharging a self-curing two-component molding composition comprises a two-plunger mixing gun having a gun body 1 and a receiving shaft 4 for 2 cartridges 11a, 11b filled with the individual components of the molding composition, and a static mixer 6 adjoining the receiving shaft 4 and with an outlet nozzle 7. In this arrangement, the cartridges 11a, 11b comprise separate cardboard sleeves 22, which are respectively provided with a terminating plate 23 and a plunger element 24. The cardboard sleeves are introduced into the receiving shaft 4, which can be closed by a pressure-resistant cartridge housing 5 enclosing the cardboard sleeves 22 flush with them. Also provided between the static mixer 6 and the cardboard sleeves 22 is a head piece 16, which can be inserted into the receiving shaft 4 and has separate flow channels 28a, 28b which are open towards the cardboard sleeves 22 and merge directly at the inlet into the static mixer 6.

Abstract: A gun for dispensing a fluid from a fluid dispenser has a body portion, a plunger assembly and an advancing mechanism. The body portion has a jaw portion for holding the fluid dispenser in a retained position and adapted for releasing the fluid dispenser when a specific pressure is reached in the chamber of the fluid dispenser. The body portion has a catcher portion for catching the fluid dispenser in a caught position upon being released by the jaw portion. The jaw portion has a pair of legs projecting from the body portion. Each leg has a foot projecting inwardly towards each other and spaced from the body portions, therein defining a flange receiving space. The feet are of such a length to overlie and engage a portion of a flange element of the fluid dispenser. The catcher has a pair of parallel plates; each plate has an opening for receiving the flange of the fluid dispenser in both the retained position and the caught position. The plunger assembly has a plunger rod slideably carried by the body portion.

Abstract: A quick-release mechanism includes a screw shaft rotatably extending through a first member, a central hole of a gear and a second member, the first member having a slot defined therein so that a plate is movably received therein which has a notch portion defined in a front end thereof so as to engage with the screw shaft and a first protrusion extending upwardly from a rear end thereof. The screw shaft has a groove longitudinally defined in an outer periphery thereof and the gear has a second protrusion extending inwardly and radially-from a periphery defining the central hole so that the second protrusion is received in the groove. A bolt is threadedly inserted into the first member and contacts the rear end of the plate which has a spring mounted thereto so as to bias the plate toward the bolt. A pinion driven by a motor is engaged with the gear so as to drive the gear and the screw shaft. The screw shaft is allowed to be pulled directly when the plate is disengaged from the screw shaft.

Abstract: A postmix juice dispenser for use with a disposable juice concentrate package that includes an integral progressive cavity pump and a mixing nozzle. The dispenser can read a product I.D. label on the package to automatically change ratios as packages are switched and a low liquid level indicator in the package to both warn the operator and to then provide automatic shut-off. A controller adjusts the pump motor speed in response to signals from a water flow meter to provide excellent control of ratio, even as water pressure changes. An easy lift-out refrigeration deck is located over an ice-water bath tank capable of holding 27 pounds of ice.

Abstract: The present invention relates to a method and apparatus for charging a closed, pressurizable fluid system with an appropriate fluid, comprising a) connecting to the system a closed, unpressurized container containing a predetermined amount of the fluid, b) mechanically forcing the contents out of the container into the system being recharged, and c) disconnecting the container. Preferably, the container is a cylindrical cartridge having a piston sealably disposed therein to displace the cartridge contents. The method and apparatus are effective in recharging various pressurized systems and fluids, such as air conditioning and refrigeration coolant lines, dye injectors, oils, chemicals, glue and the like.

Abstract: Simple and economical embodiments of a drip-stop resistance assembly for caulking guns incorporating a resistance clip, or alternatively, an elastic grommet or constricted spring. The drip-stop assembly may be used with various manually-operated caulking guns including those with metal enclosures and single piece molded plastic open frames, and with various types of plunger shafts including those with a circular or hexagonal cross-section, or ratchet teeth. The drip-stop assembly includes a resistance clip formed of resilient steel wire or the like, and bent or cast in the form of an annular yoke for encircling the plunger shaft and providing frictional resistance against sliding. The resistance clip may be inserted onto the plunger shaft (from above or below the housing) at various positions along the shaft. A back-plate formed by a conventional washer, or angle-bracket is inserted on the plunger shaft and is spaced from the resistance clip for allowing the latter to frictionally slide a short distance.

Abstract: There is disclosed a piston member for a container comprised of a piston body of a diameter smaller by at least about 0.3 cm. (0.012") than the diameter of the inner surface of the container and formed with an upwardly and outwardly extending conically-shaped wiping wall portion having a wiping edge in sliding contact with the inner surface of the container to permit flexing of the wiping edge over imperfections, such as dents or bumps in the container thereby substantially eliminating potential for piston member stall as well as more efficacious product dispensing.

Abstract: An electrically actuated material dispensing gun is disclosed having a body including a handle section and an elongate cartridge support section extending outwardly from the handle section. The cartridge support section includes a cartridge support space and an apertured end wall for receiving a cartridge dispensing nozzle and for dispensing force resisting engagement with a dispensing end of a cartridge positioned in the space. A reciprocatable push rod is carried by the handle section and axially aligned with the space for force transmitting engagement with a piston which in one embodiment is of unique construction. An electric motor is mounted in the handle section. A drive element is rotatively mounted in the handle section and in positive drive, mechanically interconnected, relationship with the rod. The drive element is normally freely rotatable in response to axial motion of the rod. A power train including a planetary is connected to the output shaft of the motor.

Abstract: A fluid dispenser system, and method of use thereof primarily in industrial applications requiring the dispensing of fluids with varying viscosities, such as water, epoxies, silicones, adhesives, single component, two component, filled, premixed, frozen, etc., allowing for very precise control of the volume of fluid extruded. The system comprises an ergonomic, handheld applicator accommodating a conventional medical syringe, wherein the ergonomic, handheld applicator is attached by a power cord to an electronic control unit. The applicator is provided with a linear actuator that drives a piston or screw a specific distance in response to an electronic signal generated by the control unit. Displacement of the piston or screw creates a positive pressure on a fluid contained in the syringe, thereby causing fluid extrusion from the syringe.

Abstract: A simple, inexpensive and efficient cartridge lock to retain a caulk cartridge within the frame of a caulk gun until intentionally released by the operator, thereby eliminating a potential safety hazard. The cartridge lock includes a resilient spacer having a central passage for slidable insertion over the plunger shaft of the caulk gun. The spacer is inserted onto the plunger shaft and is carried thereon between the piston and supporting wall to require an additional measure of force for retraction of the plunger shaft in order to insert a new cartridge or remove an old one. This avoids inadvertent release and fall-through of the cartridge. Various embodiments of the spacer are contemplated including a constricted spring having one end formed with coils sized for slidable insertion over the plunger shaft, and a constricted end formed with at least one tighter coil for gripping the plunger shaft.

Abstract: An improved tube for handling fluent materials such as caulking includes a plurality of ribs that form air escape spaces. The ribs extend inwardly from an inner peripheral wall of the tube for a very small distance. The ribs form an air space between a plunger and the tube allowing air to escape rearwardly of the plunger. In another feature of this invention, a color plastic sleeve is received on a nozzle for the tube to provide an identification of the color of the caulking received within the tube.

Abstract: A dispenser adapter apparatus which allows activation and dispensing of multiple types of materials with use of a single dispensing device. The invention includes a cartridge holder with a socket for receiving a replaceable cartridge of adhesive, filler, or other material, and an activation chamber. The cartridge holder is reversibly coupled to a dispensing device such as a syringe or dispensing gun. The piston of the dispensing device applies an activating pressure to a cartridge within the activation chamber. The activated cartridge is transferred from the activation chamber to the socket. A plunger associated with the cartridge holder forces material from the cartridge. Force is transferred from the piston of the dispensing device to the plunger of the dispenser adapter apparatus by mechanically interfacing the piston and plunger.

Abstract: A dispensing applicator includes a body with a handle, a pivotable lever and a front holder with a receptacle that is adapted to removably receive a dual chamber cartridge. In certain embodiments, the majority of the cartridge contents are expelled during a single stroke of the lever, an advantage when used for single patient use in dental or medical fields. In other embodiments, the holder is rotatably connected to the body so that the holder and the cartridge can be moved as needed in an arc in order to vary the orientation of the cartridge relative to the applicator handle. The rotatable connection enables the cartridge to be moved to any one of a number of different orientations as may be desired to provide optimum maneuverability of the applicator in use and to enhance the operator's vision of the application site.

Abstract: A syringe as disclosed having an elongated cylindrical tube open at both a first and second end. The first open end of the tube provides both a filling and dispensing opening for the contents of the tube. A cylindrical piston is slidably mounted within the tube and has a first axial end facing the fill and dispensing opening and a second axial end facing the opposite or second opening. The piston has an outside diameter slightly smaller than the inside diameter of the tube so that an annular clearance space is formed between the tube and the piston. A wiper extends radially outwardly from the second end of the piston and frictionally engages the cylindrical internal surface of the tube. In practice, when the syringe is filled, air is compressed through the annular opening and deflects the wiper such that the air escapes out of the syringe tube.

Abstract: A caulking gun and cartridge combination is provided with afterflow prevention. The cartridge has a tubular body, a forward dispensing opening at a forward end of the tubular body, and a backwall movably disposed within the tubular body. The caulking gun has a trough for receiving the cartridge, and a piston movable parallel to the trough. A trigger handle is used for pushing the backwall forward within the tubular body and causing a reduction of volume within the chamber in the cartridge. The backwall slides substantially in a contact-less manner within the tubular body, preferably by way of a reduced diameter of the backwall relative the inner diameter of the tubular body, so that it is pushed backwardly when the body retracts radially after actuation. Alternatively, the cartridge body may be prevented from expanding or may even be actively squeezed so that afterflow caused by the volume reduction of the relaxing tube body is safely prevented.

Abstract: Rechargeable packaging for dispensing fluid substances having a bell-shaped case (1) through which passes a manual plunger (2), which has an orifice (3) providing a passage for a dispensing nozzle (30) and the open base of which is closed by a removable base (5). The interior of the case housing has a replaceable cartridge (4) comprising an inverted pot shaped container (6) with a bottom (7) that is free to move axially and the top face of which has an orifice (15) communicating with a dispensing nozzle (30) via a dispensing device (16, 32) actuated by the plunger. The container and the case have cooperating means (10, 11) for locating the cartridge in the case, the cartridge being secured in the case by its base (5).

Abstract: A dispenser adapter apparatus which allows dispensing of multiple types of materials with use of a single dispensing device. The invention includes a cartridge holder with a socket for receiving a replaceable cartridge of adhesive, filler, or other material. The cartridge holder is reversibly coupled to a dispensing device such as a syringe or dispensing gun. A plunger associated with the cartridge holder forces material from the cartridge. Force is transferred from the piston of the dispensing device to the plunger of the dispenser adapter apparatus by mechanically interfacing the piston and plunger.

Abstract: A dispensing cartridge is provided for viscous liquids, such as sealants. The cartridge includes an elongated tubular cylindrical housing defining an elongated interior chamber having a cylindrical interior wall. A dispensing nozzle is formed at one end of the housing and this dispensing nozzle has an opening open to the housing chamber which is less in cross-sectional size than the cross-sectional size of the housing chamber. A substantially semi-spherical wall portion extends between the cylindrical wall of the housing and the nozzle opening while at least one reinforcing rib extends outwardly from an outer surface of the semi-spherical wall portion. This reinforcing rib not only reinforces the semi-spherical wall portion of the housing but also enables the cartridge to be used in a standard caulking gun.

Abstract: Direct injection of sphincteric botulinum toxin is disclosed as an effective, safe and simple method of treatment for disorders of gastrointestinal muscle or smooth muscles elsewhere in the body, with results that appear to be sustained for several months. Muscle disorders which are suitable for such treatment include achalasia, isolated disorders of the lower esophageal sphincter, gastroparesis, hypertrophic pyloric stenosis, sphincter of Oddi dysfunction, short-segment Hirschsprung's, anal fissure, hemorrhoids, proctalgia fugax, irritable bowel syndrome, disorders of the upper esophageal sphincter, vasospastic disorders, and disorders of uterine and bladder spasm. Devices suitable for delivering this therapy are also disclosed.

Abstract: The cartridge comprises a liner which is fastened at its outlet end to an outlet assembly which in turn is attachable to the front piece of the cartridge and which is held at its inlet end thus, that the piston slides inside the liner package. At the inlet end the liner is either fastened to the piston or to a ring insertable into the inlet end of the cartridge. Such a liner package has a low volume and plastic waste to be disposed of whereas the cylinders and the front piece of the cartridge are re-usable, whilst all performances of a rigid cartridge can be maintained or surpassed.

Abstract: A paste injector gun, especially adapted for injecting bone cement, has first and second mechanical advantages corresponding to different portions of the trigger stroke. The first mechanical advantage is greater than the second such that the first facilitates pressurizing the bone cement and the second facilitates high volume dispensing of the bone cement. The injector gun also includes a pair of U-shaped slots. One of the slots is sized to accept a large cement cartridge and the other slot is sized to accept a small cement cartridge.

Abstract: An improved tube for handling fluent materials such as caulking includes a plurality of ribs that form air escape spaces. The ribs extend inwardly from an inner peripheral wall of the tube for a very small distance. The ribs form an air space between a plunger and the tube allowing air to escape rearwardly of the plunger. In another feature of this invention, a color plastic sleeve is received on a nozzle for the tube to provide an identification of the color of the caulking received within the tube.

Abstract: A dispenser gun for selectively dispensing controlled quantities of viscous or semi-viscous materials, and in particular liquid pesticides or insecticides, employs a vacuum driven operating system for discharging and reloading the viscous or semi-viscous materials to be discharged. The dispenser gun is designed to create pressure differentials in adjoining chambers which, in conjunction with a cooperating valve system, enables the discharge of precisely metered quantities of material and prevents continued and undesired discharge or dripping from a discharge nozzle after a preselected quantity of material has been discharged from the dispenser gun. The handle of the device includes structure for pre-selecting one or more predetermined quanitites of material to be discharged from the dispenser in repeatable sequences. The dispenser gun also includes structure for removably receiving a replaceable reservoir of viscous or semi-viscous material to be discharged from the gun.

Abstract: A cartridge tube and plunger wherein the skirt of the plunger includes a ridge pattern of a generally uniform compressibility with staggered areas of greater rigidity defined by intersecting ridges for intimate accommodation within interior surface irregularities on the cartridge tube.

Abstract: A caulk gun having a piston with a flexible rim providing dripless dispensing of caulk or adhesive and including a tube-engaging receptacle for securely holding a tube is disclosed. The advantages of a dripless caulk gun are provided by a piston having a flexible circumferential rim that engages an inside surface of a caulk or adhesive dispensing tube to create an atmospheric seal. The plunger moves the piston against an inside movable surface of the dispensing tube. When the trigger is released, the plunger mechanism moves backward, and the piston creates a partial vacuum within the caulk tube thereby halting dispensing. The dispensing tube is attached to the caulk gun by secure engagement with a tube-engaging receptacle. The receptacle may be provided with threads that threadingly engage with a portion of the dispensing tube.

Abstract: Embodiments of a pill-dispensing gun for animals are disclosed, each embodiment having an improved, crack- and break-resistant handle. The handle comprises an outer member or sleeve and a core extending through the interior of the outer member and up into the barrel of the gun. The preferred gun is made from readily-available standard PVC pipe pieces, with the handle sleeve made of two parts joined by an adhesive and then joined to an elbow of the barrel by adhesive. The preferred core is a rigid tube that extends past the discontinuity or joint between the handle and the barrel to give extra strength to the handle and the handle-barrel connection. Preferably, the core is glued into the sleeve and the barrel, and preferably an annular space exists between the handle sleeve and the core to produce a laminated handle.

Abstract: A dispenser is disclosed which is made up of two telescoping sections. One section holds at least one volume of a substance to be discharged. Telescoping motion of the sections compresses the substance to be discharged to force it through a passage in the section not holding the substance volume to be discharged therefrom. Motion between the section is limited to ensure precise metering of a charge to be dispersed.

Abstract: A caulking gun and cartridge combination is provided with afterflow prevention. The cartridge has a tubular body, a forward dispensing opening at a forward end of the tubular body, and a backwall movably disposed within the tubular body. The caulking gun has a trough for receiving the cartridge, and a piston movable parallel to the trough. A trigger handle is used for pushing the backwall forward within the tubular body and causing a reduction of volume within the chamber in the cartridge. The backwall slides substantially in a contact-less manner within the tubular body, preferably by way of a reduced diameter of the backwall relative the inner diameter of the tubular body, so that it is pushed backwardly when the body retracts radially after actuation. Alternatively, the cartridge body may be prevented from expanding or may even be actively squeezed so that afterflow caused by the volume reduction of the relaxing tube body is safely prevented.

Abstract: Cutting-off device for viscous stock materials packed in can-like containers, more particularly filler materials and putties and hardener pastes. A device in the form of a disposable article for the simultaneous cutting-off of filler materials and hardener pastes dispensed from can-like containers can be mounted upon the dispensing apertures of the containers and includes a mounting plate (10) with connection pieces (12,32) and with dispensing apertures constructed within the upper region in the mounting plate and of a slider (40) displaceably retained and guided on the mounting plate (10), which, in dependence of the assumed position, closes or unblocks the dispensing apertures, and of two cutters that are moveable into the areas of the dispensing apertures.

Abstract: A container (1) for a lubricant has a cap (2) for sealing off one end (4) of a cylindrical tube (2). The cap (2) shows a bottom (19), from the periphery of which extends in an axial direction a circumferential interior ring part (17), which faces the inside of said tube end (4). The cap (3) rests, with a radially extended ring part (16) connected to said interior ring part (17), upon a radial end surface of said tube end (4). According to the invention, the latter end shows a circumferential flange edge pointed obliquely inwardly towards the central part of the tube (2) and being intended to act upon an exterior circumferential bulge (24) on the outside of cap wall (17). For optimal insertion into the tube (2) and passing said edge (18), said bulge (24) downwardly forms a longer bevel (24) with a minor style in relation to said wall (17), while for optimal locking, said bulge (24) is upwardly more acutely rounded close to said lateral wall (17).

Abstract: A cartridge for use in a dispensing gun for simultaneously dispensing and mixing a pair of chemically reactive fluid components maintained in separate chambers in the cartridge. One of the fluid components is contained in an elongated tube formed of a thin flexible film which is placed within a first chamber located either coaxially within an outer annular second chamber containing the other fluid component, or in a side-by-side relationship to the second chamber. Pistons are slidably mounted within the two chambers for simultaneously dispensing the fluid components therefrom when moved forward by plungers of the dispensing gun. In a first embodiment, the front end surface of one of the pistons is recessed from an outer end surface of the other piston to form a void space for collecting the collapsed flexible film therein to permit the outer piston to reach the full extent of its stroke and expel all of the fluid components from both the chambers.

Abstract: A caulk cartridge of recyclable material including an end panel with an integral nozzle. Interior projections integral with the end panel define a cylindrical extension about the open base end of the nozzle and, upon being subjected to the force of the piston-driven plunger thereagainst, inwardly deform and fracture the end panel, breaking away the nozzle, and residue therein, from the end panel.

Abstract: A surgical cement cartridge, for loading with surgical cement and for ejecting surgical cement at a surgical site, comprises a substantially tubular casing comprising a peripheral wall surrounding a longitudinal passage, the passage having an open front end and a remote rear end. A first piston unit is located in the passage for free sliding movement from the front end towards the rear end in response to input of surgical cement into the front end of the casing. A second piston unit is located in the passage adjacent the rear end for forcible driving forward along the passage to cause the first piston unit to eject cement from the first casing end toward a surgical site, the second piston unit having seal mechanism for positively blocking flow of surgical cement axially therepast.

Abstract: A dripless caulk gun is disclosed having a biased-spring drive mechanism and a plunger that presses against an inside surface of a caulk tube for dispensing caulk. At the end of the plunger is a piston having a flexible rim which creates a seal between the piston and an inside surface of the caulk tube, thus creating a partial vacuum in a volume between the piston and the inside end face of the caulk tube when the plunger is moved backward. The partial vacuum causes a drive plate within the caulk tube to move back into the partial vacuum, thereby relieving all built-up pressure within the caulk-filled portion of the caulk tube which immediately ends dispensing of caulk.

Abstract: A dispenser gun for selectively dispensing controlled quantities of viscous or semi-viscous materials, and in particular liquid pesticides or insecticides, employs a vacuum driven operating system for discharging and reloading the viscous or semi-viscous materials to be discharged. The dispenser gun is designed to create pressure differentials in adjoining chambers which, in conjunction with a cooperating valve system, enables the discharge of precisely metered quantities of material and prevents continued and undesired discharge or dripping from a discharge nozzle after a preselected quantity of material has been discharged from the dispenser gun. The handle of the device includes structure for pre-selecting one or more predetermined quanitites of material to be discharged from the dispenser in repeatable sequences. The dispenser gun also includes structure for removably receiving a replaceable reservoir of viscous or semi-viscous material to be discharged from the gun.