WO2006015596A1 - Dispenser for pressing out material from a cartridge - Google Patents

Dispenser for pressing out material from a cartridge Download PDF

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Publication number
WO2006015596A1
WO2006015596A1 PCT/DK2005/000518 DK2005000518W WO2006015596A1 WO 2006015596 A1 WO2006015596 A1 WO 2006015596A1 DK 2005000518 W DK2005000518 W DK 2005000518W WO 2006015596 A1 WO2006015596 A1 WO 2006015596A1
Authority
WO
WIPO (PCT)
Prior art keywords
supporting structure
cartridge
cartridge holder
pivot
dispenser according
Prior art date
Application number
PCT/DK2005/000518
Other languages
French (fr)
Inventor
Jørgen ELMELUND
Mogens KRØGER
Original Assignee
M. Krøger Maskinfabrik A/S
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by M. Krøger Maskinfabrik A/S filed Critical M. Krøger Maskinfabrik A/S
Publication of WO2006015596A1 publication Critical patent/WO2006015596A1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C17/00—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces
    • B05C17/005—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using surface contacting members like pads or brushes
    • B05C17/00553—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using surface contacting members like pads or brushes with means allowing the stock of material to consist of at least two different components

Definitions

  • Dispenser for pressing out material from a cartridge
  • the invention relates to a dispenser for press ⁇ ing out material from a cartridge, comprising a car- tridge holder for a cartridge, which has one or more cylinders, and one or more plungers for pressing out material from a cylinder, as well as a driving means for driving the plunger or plungers, the cartridge holder comprising at least one supporting structure, which is moveable between a first position, in which suitable support for a first cartridge is provided, and a second position, in which suitable support for a second cartridge is provided.
  • EP 0 452 270 describes a dispenser for use by a twin cartridge, comprising two mutually connected and parallely placed cartridge cylinders, which opens into a common nozzle.
  • the dispenser has a cartridge holder, into which a horizontally positioned twin cartridge may be inserted from the top, as the two cartridge cylinders are positioned on top of one an ⁇ other.
  • the cartridge holder has the shape of a trough of the same length as a cartridge and has upper and lower retention means for securing the upper or the lower cartridge cylinder, respectively, in so Jar as the cylinder in question has a predetermined diameter which fits the retention means for this cylinder.
  • the second cartridge cylinder may have a smaller diameter than the one corresponding to the retention means for this cylinder, as the twin cartridge may be secured by retaining only one of the cylinders.
  • the entire cartridge holder must be replaced, which is a disadvantage.
  • EP 1 072 324 shows a dispenser with a trough- shaped cartridge holder comprising two supporting sections, each having a radius of curvature adapted for a cylinder of a twin cartridge. Furthermore, the dispenser comprises a guider for placement in one of said supporting sections of the cartridge holder, as the guider has a supporting face for a cylinder with a radius of curvature which is smaller than the ra ⁇ dius of curvature of this supporting section.
  • the cartridge holder may be adapted for cartridges with cylinders of different diameters.
  • US 5,314,092 describes a manually operated dis- an for twin cartridges, the two cartridge cylin ⁇ ders being mounted in parallel with their central axes in a horizontal plane.
  • the dispenser has two pa- rallelly placed plunger rods, which are fastened in elongated holes by means of nuts, so that their mu- tual distance may be varied when mounting twin car ⁇ tridges with varying ratios between the diameters of the two cartridge cylinders.
  • the twin cartridge is only supported by plungers, mounted on the plunger rods, as well as via the common nozzle of the car- tridge cylinders, which, during the mounting, are in ⁇ serted into a slot in a front wall of the dispenser. Therefore, this dispenser may only be used for a lim ⁇ ited number of the cartridges available on the mar ⁇ ket, as the nozzle of the cartridges must fit the slot formed in the dispenser.
  • US 5,441,175 describes a dispenser of the type described above, in which the front wall, having the slot for the cartridge nozzle formed in it, may be mounted in two different manners to enable the use of cartridges with two different types of nozzles.
  • a large number of cartridges avail ⁇ able on the market cannot be mounted in this dis- an.
  • US 5,535,922 describes an insert for use in a caulking gun for single cartridges, enabling this caulking gun to be used for twin cartridges .
  • the in ⁇ sert comprises a cylindrical housing shaped like a single cartridge, into which a twin cartridge may be inserted.
  • the casing comprises a plunger, the one end of which being divided in two, and the other end of which fitting the single plunger of the caulking gun.
  • dispensers with an actuator part comprising handles and plungers and a trough-shaped cartridge holder mounted releasably on the actuator part are known, which accommodate a particular size and/or type of cartridge. When using a different type of cartridge, the cartridge holder is replaced.
  • a dispenser with such a trough-shaped car ⁇ tridge holder in which tiltable supporting structures for a twin cartridge are fastened, so that the supporting structures fit one type of cartridge in one position and a second type of cartridge in a second position.
  • this dispenser may only be used for these two particular types of cartridges.
  • the object of the present invention is to pre ⁇ sent a dispenser, which, in a simple manner, may be used for a number of different types of cartridges without having to replace expensive components.
  • the dispenser of the invention is characterized in that, the supporting structure comprises first engagement means for re- leasable engagement with corresponding second engage ⁇ ment means formed in the cartridge holder, so that the supporting structure may be replaced without the use of tools.
  • a dispenser may be supplied with, for exam ⁇ ple, three different supporting structures, enabling the dispenser to be used for six different types of cartridges. Since the supporting structures -may be formed as simple, small and hence cheap components, an extremely cheap and space-saving product is achieved.
  • the engagement means comprise a pivot for insertion into a corresponding bearing, the supporting structure thus being tiltable between its first position and its second position by pivoting the pivot in its cor ⁇ responding bearing.
  • the supporting structure and one half of the engagement means in the form of either a pivot or a bearing, may be formed inte- grally, thus saving further components.
  • At least one bearing is for ⁇ med as a hole, surrounded by a wall, in which an in ⁇ sertion slot for a pivot is formed.
  • a supporting structure may easily be mounted in the cartridge holder by inserting the pivot into the bea ⁇ ring by laterally displacing it through the insertion slot of the wall.
  • At least one pivot has an elongated cross section
  • the insertion slot of the corresponding bearing has a width, which is smal ⁇ ler than the maximum length of the cross section of the pivot.
  • the pivot may be locked in the bear ⁇ ing by pivoting the pivot after inserting it through the insertion slot.
  • the hole of the bearing, cor ⁇ responding to the at least one pivot is substan ⁇ tially cylindrical having a diameter corresponding approximately to the maximum length of the cross sec ⁇ tion of the pivot.
  • the insertion slot has a width, which is larger than the maximum width of the cross section of the pivot. This facilitates the in ⁇ sertion of the pivot through the insertion slot, as no friction occurs.
  • the second engagement means are formed by the at least one bearing and are posi ⁇ tioned at a bottom of the cartridge holder, and the insertion slots are facing away from the bottom. This substantially facilitates the mounting of the sup ⁇ porting structure, as the insertion slots are visible to the user, so that the pivot may easily be inserted into them.
  • the wall of the bearings projects from opposite inner fa ⁇ ces of the cartridge holder.
  • the wall of the bearings may be fastened by means of welding to or be cast integrally with walls of. the cartridge holder.
  • the supporting structure comprises an at least partially cylindrical shaft extending between respective first engagement means at opposite ends of the supporting structure, and in a bottom of the cartridge holder a recess is formed for partially accommodating the shaft.
  • the shaft may thus be embedded in the recess, thus achieving particularly good fixing of the supporting structure in the cartridge holder resulting in a more robust construction.
  • the supporting structure comprises two mutually angled walls, in each of which a recess is formed having a contour, which forms a suitable supporting structure for a cartridge of a particular size or shape.
  • a good uniform supporting structure may be achieved along the entire downward facing part of the car ⁇ tridge circumference.
  • the contour of the recess forms facing projections, which, when inserting the cartridge, grip and retain it, as the cartridge yields elasti- cally to the projections during the insertion.
  • the cartridge may thus be prevented from falling out of the cartridge holder, if the dispenser is turned up- side down, before the plunger is pushed into the car ⁇ tridge.
  • latch means for engagement with end edges of the supporting structure are formed, the supporting structure thus being lock- able in its first position and its second position, respectively. In this way, a further stabile retain- ment of the cartridge may be ensured, as the support ⁇ ing structure may be held fixedly in its supporting positions.
  • the latch means are wedge-shaped projections, and one pair of opposite projections are positioned above each bearing and closer to an upper edge of the car- tridge holder than to the bearing, so that an end edge of a wall of the supporting structure may engage between the two projections of the pair.
  • the invention relates to a method for mounting a supporting structure in a cartridge holder of a dispenser.
  • the method of the invention is characterized in that the supporting structure is in ⁇ serted between opposite walls of the cartridge holder and is positioned above bearings on the walls in such a manner that an axis of rotation of the supporting structure is substantially perpendicular to the walls, whereafter the pivots of the supporting struc ⁇ ture are passed through the insertion slots of walls surrounding the bearings by means of a substantially parallel displacement of the supporting structure, and whereafter the supporting structure is pivoted about its axis of rotation, until it engages with projections of the cartridge holder.
  • Figure 1 is a perspective view of a dispenser according to the invention
  • Figure 2 shows a part of the dispenser of Fig ⁇ ure 1, comprising the cartridge holder, with the sup ⁇ porting structures removed,
  • Figure 3 shows one half of the member shown in Figure 2
  • Figure 4 shows a side view of a supporting structure of the dispenser of Figure 1
  • Figure 5 shows an end view of the supporting structure of Figure 4
  • Figure 6 shows a perspective view of the sup ⁇ porting structure of Figure 4
  • Figures 7 A-D show cross sections. through a di ⁇ spenser according to the invention, mounted with car- tridges of different sizes,
  • Figure 8 shows a section along the line VIII- VIII in Figure 1, during the insertion of a support ⁇ ing structure
  • Figure 9 shows a sectional view corresponding to Figure 8, after the insertion of the supporting structure
  • Figures 10 to 14 show alternative embodiments of the connecting means between the supporting struc ⁇ ture and the cartridge holder.
  • Figure 1 shows a dispenser 1 according to the invention, comprising a trough-shaped cartridge hol ⁇ der 2 formed integrally with an underlying fixed han ⁇ dle 3 and an actuator housing 4 located behind.
  • the cartridge holder 2 comprises a first lateral wall 5, a second lateral wall 6, a front wall 7, a rear wall
  • the actuator housing 4 is formed integrally with the rear wall 8 of the cartridge holder 2 and comprises a driving mechanism, known per se, for a driving rod 9, by means of which the_ driv- ing rod 9 may be displaced in its longitudinal direc ⁇ tion through the actuator housing 4 and into the car ⁇ tridge holder 2 by operating a driving handle 10, mounted pivotally below the cartridge holder 2 in communication with the fixed handle 3.
  • the driving handle 10 is coupled to the driving device arranged in the actuator housing 4 by means of a rod drive, not shown, arranged in a channel 11 formed in the connection between the fixed handle 3 and the car- tridge holder, see Figure 3.
  • the driving device ar ⁇ ranged in the actuator housing 4 functions by means of a ratchet mechanism, known per se, by .means of which the driving rod 9 is moved further into the cartridge holder 2 by every movement of the driving handle 10 in the direction towards the fixed handle 3, and is locked against displacement in the opposite direction.
  • said locking mechanism is released, so that the driving rod 9 is moveable in the direction out of the cartridge holder 2.
  • said manual driving device may be replaced by any suitable driving device such as a pneumatic or hydraulic cylinder, an electric motor, or other.
  • the cartridge holder 2 may be injection moulded in two halves, each being integral with the handle 3 and the actuator housing 4.
  • the material of the cartridge holder may be fibreglass-reinforced polyamide such as PA6 with 30% fibreglass, which ensures good chemical resistance as well as strength.
  • the dispenser shown in Figure 1 is of the two component type, i.e. it is arranged for use by a twin cartridge 64 comprising two cylinders 65, 66 placed in parallel and containing caulking material, an ad ⁇ hesive or another material, which, during operation of the dispenser, may be pressed out through a common nozzle, not shown, projecting through an opening 12 in the front wall 7 of the cartridge holder 2.
  • the front end of the cartridge 64 abuts the front wall 7.
  • the opening 12 is formed in such a man- ner that all relevant cartridges fit into the holder.
  • plungers are ar ⁇ ranged in a position at the opposite end of the noz ⁇ zle, when the cartridge is unused, for pressing mate- rial out into the cylinders.
  • the dispenser 1 has two driving plungers 13, 14, each being mounted at the end of a plunger rod 15, 16 within the car ⁇ tridge holder 2.
  • the plunger rods 15, 16 are driven by the driving rod 9 via a crossbar 17 located at the rear end of the rods 9, 15, 16.
  • one 14 of the plungers is connected directly with the driv ⁇ ing rod 9 at the front end of it.
  • the plungers 13, 14 are fastened to the respective rods 9, 15, 16 by means of screws, so that the plungers 13, 14 may eas ⁇ ily be replaced by plungers of different sizes de ⁇ pending on the diameters of the two cylinders of the cartridge.
  • the dispenser of the inven ⁇ tion may be of the single-component type, the car- tridge only comprising a single cylinder.
  • the cartridge holder of the invention is provided with replaceable supporting structures 18, 19, whereby a cartridge may be supported by the cartridge holder in such a manner that its cylinders are substantially coaxial to the respective centre axes of the dispenser plungers 13, 14, thus ensuring unproblematic evacuation of the cylinders.
  • Figures 4 to 6 show a supporting structure 20 for use in the dispenser shown in Figure 1.
  • the sup ⁇ porting structure 20 is formed as one piece and com ⁇ prises a first wall 21 and a second wall 22, which is perpendicular to the first wall 21, so that the sup- porting structure has an L-shaped cross section, as shown in Figure 5.
  • the supporting structure 20 has a lon ⁇ gitudinal rotating shaft 23, at each end of which projecting pivots 24, 25 with elongated cross sec ⁇ tions are formed, which may be inserted into corre ⁇ sponding bearings 26, 27 formed at the inner sides of the lateral walls 5, 6 of the cartridge holder 2.
  • a recess 28, 29 is formed in each of the walls 21, 22 of the supporting structure 20, a recess 28, 29 is formed.
  • the recess 28 of the first wall 21 of the supporting structure has a con ⁇ tour, forming suitable support for a first cartridge comprising two cylinders
  • the recess 29 of the second wall 22 of the supporting structure has a con- tour, forming suitable support for a second cartridge comprising two cylinders.
  • Figure 8 shows the supporting structure 20 positioned in the cartridge holder 2 in a position, in which its rotat ⁇ ing shaft 23 runs across the direction of displace ⁇ ment of the dispenser plungers 13, 14, so that the pivots 24, 25 are located above their respective bearings 26, 27.
  • the longitudinal axis of the longitudinal cross section of the pivot 25 runs per ⁇ pendicularly to the plane of the bottom 30 of the cartridge holder 2, so that, by displacing the sup- porting structure 20 in the downward direction of the figure,- the pivot 25 is able to pass an insertion slot 31 of a wall 32, surrounding a hole 33 formed in the bearing 26 with a substantially circular periph ⁇ ery.
  • the supporting structure 20 Upon the insertion of the pivot 25 into the hole 33, the supporting structure 20 is pivoted with the pivot 25 into the position shown in Figure 9, in which an end edge 34 of the second wall 22 engages between wedge-shaped projections 35 formed above the bearing 26 at an inner side of the first lateral wall 5 of the cartridge holder 2, closer to an upper edge of the lateral wall 5 than to the bottom 30 of the cartridge holder 2.
  • the engagement between the wall 22 of the supporting structure and the projections 35 takes place by means of elastic deformation of both the supporting structure and the cartridge holder.
  • the cross section of the pivot 25 has a maximum length L, by and large corre ⁇ sponding to the diameter of the hole 33 of the bear- ing 26, the maximum length L being so much smaller than said diameter that the pivot 25 may easily be pivoted in the hole 33, but its position will still be determined fairly accurately. Furthermore, this effect is ensured in that the cross section of the pivot 25 has end sides, which are curved so as to form circular arcs with the diameter L. In addition, the cross section of the pivot 25 has a width B, which is so much smaller than the width of the slot 31 that the pivot 25 is just able to pass through the slot 31 without friction.
  • the dis ⁇ 2 By tilting the supporting structure 20 about the axis of its rotating shaft 23, from the position shown in Figure 9, in which the se ⁇ cond wall 22 of the supporting structure is engaging between the projections 35, into a second position, in which the first wall 21 of the supporting struc ⁇ ture is engaging between the projections 35, the dis ⁇ season 1 may be used for a second type of cartridge.
  • its rotating shaft 23 engages with a recess 61 of the bottom 30 of the cartridge holder 2, whereby the sup ⁇ porting structure is retained in a more stabile man ⁇ ner.
  • FIG. 10 shows a second embodiment of the en- gagement means between a supporting structure 36 and the cartridge holder 2.
  • This supporting structure 36 also comprises pivots 37, which project from ends of a rotating shaft for the supporting structure, as in the embodiment described above.
  • the pivots 37 are cylindrical and may be journaled in a partially cylindrical bearing 38 formed in a wall 39, formed integrally with and projecting from a lat ⁇ eral wall of the cartridge holder 2.
  • a slot 40 is formed having a width, which is smaller than the diameter of the pivot 37.
  • FIG 11 shows a third embodiment of the en ⁇ gagement means between a supporting structure 41 and the cartridge holder 2.
  • the supporting structure 41 has pivots 42, which, by insertion through a slot 43 between two opposite walls 44, may be inserted into a bearing opening 45, in which the pivot 42 may abut an inner side of the wall 44.
  • the sup ⁇ porting structure 41 is locked in the position shown.
  • the second wall 48 of the supporting structure may be brought into the upright position and into abutment against the projection 46, thus enabling a _second cartridge to be supported.
  • Figure 12 shows a fourth embodiment of the en ⁇ gagement means between a supporting structure 49 and the cartridge holder 2.
  • This supporting structure has pivots 50 with a diamond-shaped cross section, which, when inserting the pivot 50 through a slot 51 between two bearing walls 52, functions as a wedge and ex ⁇ pands the width of the slot by deformation of the bearing walls 52 in the direction of the arrows shown in the figure.
  • the supporting structure 49 may be re ⁇ tained in two different supporting positions by means of projections, not shown, on the inner sides of the lateral walls of the cartridge holder, as described for the above-mentioned embodiments.
  • Figure 13 shows a fifth embodiment of the en ⁇ gagement means between a pivot 53 of a supporting structure, not shown, and a bearing 54 formed as a projection on a lateral wall 55 of a cartridge hol- der.
  • the pivot 53 has a rounded end 56 fitting into a rounded bearing bush 57 of the projection 54.
  • figure 14 shows a sixth embodiment of the engagement means between a supporting struc ⁇ ture and a cartridge holder 2.
  • a bearing 58 for the actual rotating shaft 23 of a sup ⁇ porting structure for example of the type shown in Figures 4 to 6, is positioned on the top side of the bottom 30 of the cartridge holder 2, at the centre between its lateral walls 5, 6.
  • the bearing 58 may have a cross section approximately corresponding to that of the bearing 26, shown in Figures 8 to 9, as a slot 59 between walls 60 of the bearing are expanded elastically by pressing the rotating shaft 23 into the bearing 58.
  • the various embodiments described above may be combined in many different ways within the scope of the present invention.
  • the shown piv ⁇ ots may be placed on the cartridge holder instead of on the supporting structure, and the bearings for the pivots may also be placed on the supporting struc ⁇ ture.
  • the various bearings illustrated may be placed on the bottom of the cartridge holder instead of on its lateral walls.
  • two different types of bearings may be com ⁇ bined, e.g. a bearing of the type shown in Figures 8 and 9 at one end of the supporting structure and a bearing of the type shown in Figure 13 at the other end of the supporting structure.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Coating Apparatus (AREA)

Abstract

A dispenser (1) comprises a cartridge holder (2) for a cartridge, which has one or more cylinders, and one or more plungers (13, 14) for pressing out material from a cylinder. The cartridge holder (2) comprises at least one supporting structure (18, 19), which is moveable between a first and a second position. The supporting structure (18, 19) comprises first engagement means (24, 25) for releasable engagement with corresponding second engagement means (26, 27) formed in the cartridge holder, so that the supporting structure may be replaced without the use of tools.

Description

Dispenser for pressing out material from a cartridge
The invention relates to a dispenser for press¬ ing out material from a cartridge, comprising a car- tridge holder for a cartridge, which has one or more cylinders, and one or more plungers for pressing out material from a cylinder, as well as a driving means for driving the plunger or plungers, the cartridge holder comprising at least one supporting structure, which is moveable between a first position, in which suitable support for a first cartridge is provided, and a second position, in which suitable support for a second cartridge is provided.
EP 0 452 270 describes a dispenser for use by a twin cartridge, comprising two mutually connected and parallely placed cartridge cylinders, which opens into a common nozzle. The dispenser has a cartridge holder, into which a horizontally positioned twin cartridge may be inserted from the top, as the two cartridge cylinders are positioned on top of one an¬ other. The cartridge holder has the shape of a trough of the same length as a cartridge and has upper and lower retention means for securing the upper or the lower cartridge cylinder, respectively, in so Jar as the cylinder in question has a predetermined diameter which fits the retention means for this cylinder. The second cartridge cylinder may have a smaller diameter than the one corresponding to the retention means for this cylinder, as the twin cartridge may be secured by retaining only one of the cylinders. However, when retaining a twin cartridge which does not have a cyl¬ inder corresponding to one of the retention means, the entire cartridge holder must be replaced, which is a disadvantage.
EP 1 072 324 shows a dispenser with a trough- shaped cartridge holder comprising two supporting sections, each having a radius of curvature adapted for a cylinder of a twin cartridge. Furthermore, the dispenser comprises a guider for placement in one of said supporting sections of the cartridge holder, as the guider has a supporting face for a cylinder with a radius of curvature which is smaller than the ra¬ dius of curvature of this supporting section. Thus, the cartridge holder may be adapted for cartridges with cylinders of different diameters.
US 5,314,092 describes a manually operated dis- penser for twin cartridges, the two cartridge cylin¬ ders being mounted in parallel with their central axes in a horizontal plane. The dispenser has two pa- rallelly placed plunger rods, which are fastened in elongated holes by means of nuts, so that their mu- tual distance may be varied when mounting twin car¬ tridges with varying ratios between the diameters of the two cartridge cylinders. The twin cartridge is only supported by plungers, mounted on the plunger rods, as well as via the common nozzle of the car- tridge cylinders, which, during the mounting, are in¬ serted into a slot in a front wall of the dispenser. Therefore, this dispenser may only be used for a lim¬ ited number of the cartridges available on the mar¬ ket, as the nozzle of the cartridges must fit the slot formed in the dispenser.
Furthermore, US 5,441,175 describes a dispenser of the type described above, in which the front wall, having the slot for the cartridge nozzle formed in it, may be mounted in two different manners to enable the use of cartridges with two different types of nozzles. However, a large number of cartridges avail¬ able on the market cannot be mounted in this dis- penser.
US 5,535,922 describes an insert for use in a caulking gun for single cartridges, enabling this caulking gun to be used for twin cartridges . The in¬ sert comprises a cylindrical housing shaped like a single cartridge, into which a twin cartridge may be inserted. Furthermore, the casing comprises a plunger, the one end of which being divided in two, and the other end of which fitting the single plunger of the caulking gun. Furthermore, dispensers with an actuator part comprising handles and plungers and a trough-shaped cartridge holder mounted releasably on the actuator part are known, which accommodate a particular size and/or type of cartridge. When using a different type of cartridge, the cartridge holder is replaced. Fur¬ thermore, a dispenser with such a trough-shaped car¬ tridge holder is known, in which tiltable supporting structures for a twin cartridge are fastened, so that the supporting structures fit one type of cartridge in one position and a second type of cartridge in a second position. However, this dispenser may only be used for these two particular types of cartridges.
The object of the present invention is to pre¬ sent a dispenser, which, in a simple manner, may be used for a number of different types of cartridges without having to replace expensive components.
In order to achieve this, the dispenser of the invention is characterized in that, the supporting structure comprises first engagement means for re- leasable engagement with corresponding second engage¬ ment means formed in the cartridge holder, so that the supporting structure may be replaced without the use of tools.
In this way, it is possible for the same dis¬ penser to be used for more or less every possible type of cartridge by simply replacing the supporting structure of the cartridge holder. Since each sup- porting structure fits two different types of car¬ tridges, a dispenser may be supplied with, for exam¬ ple, three different supporting structures, enabling the dispenser to be used for six different types of cartridges. Since the supporting structures -may be formed as simple, small and hence cheap components, an extremely cheap and space-saving product is achieved.
Furthermore, in relation to known solutions, in which the cartridge cylinders are only supported at the nozzle and by means of the plungers, a far better supporting structure for the cylinders are achieved in accordance with the present invention, which is particularly significant in relation to cartridges with large dimensions and hence great mass. Thus, a carefree evacuation of the cylinders is ensured, as the driving plungers of the dispenser are always cor¬ rectly aligned in relation to the plungers of the cartridge cylinders, thus avoiding skew pressure on these. In a structurally advantageous embodiment, the engagement means comprise a pivot for insertion into a corresponding bearing, the supporting structure thus being tiltable between its first position and its second position by pivoting the pivot in its cor¬ responding bearing. Hereby, the supporting structure and one half of the engagement means, in the form of either a pivot or a bearing, may be formed inte- grally, thus saving further components.
In an embodiment, at least one bearing is for¬ med as a hole, surrounded by a wall, in which an in¬ sertion slot for a pivot is formed. In this way, a supporting structure may easily be mounted in the cartridge holder by inserting the pivot into the bea¬ ring by laterally displacing it through the insertion slot of the wall.
In an embodiment, at least one pivot has an elongated cross section, and the insertion slot of the corresponding bearing has a width, which is smal¬ ler than the maximum length of the cross section of the pivot. Thus, the pivot may be locked in the bear¬ ing by pivoting the pivot after inserting it through the insertion slot. In an embodiment, the hole of the bearing, cor¬ responding to the at least one pivot, is substan¬ tially cylindrical having a diameter corresponding approximately to the maximum length of the cross sec¬ tion of the pivot. Thus, an unambiguous positioning of the supporting structure of the cartridge holder in relation to its axis of rotation is determined. By tilting the supporting structure into one of its end positions, its position will thus be predetermined.
In an embodiment, the insertion slot has a width, which is larger than the maximum width of the cross section of the pivot. This facilitates the in¬ sertion of the pivot through the insertion slot, as no friction occurs. In an embodiment, the second engagement means are formed by the at least one bearing and are posi¬ tioned at a bottom of the cartridge holder, and the insertion slots are facing away from the bottom. This substantially facilitates the mounting of the sup¬ porting structure, as the insertion slots are visible to the user, so that the pivot may easily be inserted into them.
In a structurally advantageous embodiment, the wall of the bearings projects from opposite inner fa¬ ces of the cartridge holder. Thus, it is possible to provide the bearings with extra strength, as the wall of the bearings, for example, may be fastened by means of welding to or be cast integrally with walls of. the cartridge holder.
In a structurally advantageous embodiment, the supporting structure comprises an at least partially cylindrical shaft extending between respective first engagement means at opposite ends of the supporting structure, and in a bottom of the cartridge holder a recess is formed for partially accommodating the shaft. When mounting the supporting structure in the cartridge holder, the shaft may thus be embedded in the recess, thus achieving particularly good fixing of the supporting structure in the cartridge holder resulting in a more robust construction.
In a structurally advantageous embodiment, the supporting structure comprises two mutually angled walls, in each of which a recess is formed having a contour, which forms a suitable supporting structure for a cartridge of a particular size or shape. Thus, a good uniform supporting structure may be achieved along the entire downward facing part of the car¬ tridge circumference.
In an embodiment, in each of the mutually an¬ gled walls, the contour of the recess forms facing projections, which, when inserting the cartridge, grip and retain it, as the cartridge yields elasti- cally to the projections during the insertion. The cartridge may thus be prevented from falling out of the cartridge holder, if the dispenser is turned up- side down, before the plunger is pushed into the car¬ tridge.
In a structurally advantageous embodiment, at inner faces of the cartridge holder, latch means for engagement with end edges of the supporting structure are formed, the supporting structure thus being lock- able in its first position and its second position, respectively. In this way, a further stabile retain- ment of the cartridge may be ensured, as the support¬ ing structure may be held fixedly in its supporting positions.
In a structurally advantageous embodiment, the latch means are wedge-shaped projections, and one pair of opposite projections are positioned above each bearing and closer to an upper edge of the car- tridge holder than to the bearing, so that an end edge of a wall of the supporting structure may engage between the two projections of the pair. This offers good fixing of the supporting structure in its sup¬ porting positions, and furthermore another advantage is achieved in that the supporting structure may eas¬ ily be disengaged from the projections, as the part of the end edge engaging with the projections is im¬ mediately accessible in the proximity of the top edge of the cartridge holder, so that it may easily be gripped using the fingers.
Furthermore, the invention relates to a method for mounting a supporting structure in a cartridge holder of a dispenser. The method of the invention is characterized in that the supporting structure is in¬ serted between opposite walls of the cartridge holder and is positioned above bearings on the walls in such a manner that an axis of rotation of the supporting structure is substantially perpendicular to the walls, whereafter the pivots of the supporting struc¬ ture are passed through the insertion slots of walls surrounding the bearings by means of a substantially parallel displacement of the supporting structure, and whereafter the supporting structure is pivoted about its axis of rotation, until it engages with projections of the cartridge holder. Thus, the above- mentioned advantages are achieved.
In the following, the invention will be ex- plained in more detail by means of examples of em¬ bodiments, with reference to the accompanying draw¬ ings, in which
Figure 1 is a perspective view of a dispenser according to the invention, Figure 2 shows a part of the dispenser of Fig¬ ure 1, comprising the cartridge holder, with the sup¬ porting structures removed,
Figure 3 shows one half of the member shown in Figure 2, Figure 4 shows a side view of a supporting structure of the dispenser of Figure 1,
Figure 5 shows an end view of the supporting structure of Figure 4, Figure 6 shows a perspective view of the sup¬ porting structure of Figure 4,
Figures 7 A-D show cross sections. through a di¬ spenser according to the invention, mounted with car- tridges of different sizes,
Figure 8 shows a section along the line VIII- VIII in Figure 1, during the insertion of a support¬ ing structure,
Figure 9 shows a sectional view corresponding to Figure 8, after the insertion of the supporting structure, and
Figures 10 to 14 show alternative embodiments of the connecting means between the supporting struc¬ ture and the cartridge holder. Figure 1 shows a dispenser 1 according to the invention, comprising a trough-shaped cartridge hol¬ der 2 formed integrally with an underlying fixed han¬ dle 3 and an actuator housing 4 located behind. The cartridge holder 2 comprises a first lateral wall 5, a second lateral wall 6, a front wall 7, a rear wall
8 and a bottom 30. The actuator housing 4 is formed integrally with the rear wall 8 of the cartridge holder 2 and comprises a driving mechanism, known per se, for a driving rod 9, by means of which the_ driv- ing rod 9 may be displaced in its longitudinal direc¬ tion through the actuator housing 4 and into the car¬ tridge holder 2 by operating a driving handle 10, mounted pivotally below the cartridge holder 2 in communication with the fixed handle 3. The driving handle 10 is coupled to the driving device arranged in the actuator housing 4 by means of a rod drive, not shown, arranged in a channel 11 formed in the connection between the fixed handle 3 and the car- tridge holder, see Figure 3. The driving device ar¬ ranged in the actuator housing 4 functions by means of a ratchet mechanism, known per se, by .means of which the driving rod 9 is moved further into the cartridge holder 2 by every movement of the driving handle 10 in the direction towards the fixed handle 3, and is locked against displacement in the opposite direction. However, by moving the driving handle 10 away from its neutral position in the direction away from the fixed handle 3, said locking mechanism is released, so that the driving rod 9 is moveable in the direction out of the cartridge holder 2. Thus, afterflow at the end of the pressing out process is avoided. However, said manual driving device may be replaced by any suitable driving device such as a pneumatic or hydraulic cylinder, an electric motor, or other. For example, the cartridge holder 2 may be injection moulded in two halves, each being integral with the handle 3 and the actuator housing 4. For ex- ample, the material of the cartridge holder may be fibreglass-reinforced polyamide such as PA6 with 30% fibreglass, which ensures good chemical resistance as well as strength.
The dispenser shown in Figure 1 is of the two component type, i.e. it is arranged for use by a twin cartridge 64 comprising two cylinders 65, 66 placed in parallel and containing caulking material, an ad¬ hesive or another material, which, during operation of the dispenser, may be pressed out through a common nozzle, not shown, projecting through an opening 12 in the front wall 7 of the cartridge holder 2. The front end of the cartridge 64 abuts the front wall 7. Furthermore, the opening 12 is formed in such a man- ner that all relevant cartridges fit into the holder. In each cylinder of the cartridge, plungers are ar¬ ranged in a position at the opposite end of the noz¬ zle, when the cartridge is unused, for pressing mate- rial out into the cylinders. Corresponding to each of the cartridge plungers, not shown, the dispenser 1 has two driving plungers 13, 14, each being mounted at the end of a plunger rod 15, 16 within the car¬ tridge holder 2. The plunger rods 15, 16 are driven by the driving rod 9 via a crossbar 17 located at the rear end of the rods 9, 15, 16. Furthermore, one 14 of the plungers is connected directly with the driv¬ ing rod 9 at the front end of it. The plungers 13, 14 are fastened to the respective rods 9, 15, 16 by means of screws, so that the plungers 13, 14 may eas¬ ily be replaced by plungers of different sizes de¬ pending on the diameters of the two cylinders of the cartridge. In addition, the dispenser of the inven¬ tion may be of the single-component type, the car- tridge only comprising a single cylinder.
To support cartridges with cylinders of differ¬ ent diameters, the cartridge holder of the invention is provided with replaceable supporting structures 18, 19, whereby a cartridge may be supported by the cartridge holder in such a manner that its cylinders are substantially coaxial to the respective centre axes of the dispenser plungers 13, 14, thus ensuring unproblematic evacuation of the cylinders.
Figures 4 to 6 show a supporting structure 20 for use in the dispenser shown in Figure 1. The sup¬ porting structure 20 is formed as one piece and com¬ prises a first wall 21 and a second wall 22, which is perpendicular to the first wall 21, so that the sup- porting structure has an L-shaped cross section, as shown in Figure 5. Along the connection of the two walls 21, 22, the supporting structure 20 has a lon¬ gitudinal rotating shaft 23, at each end of which projecting pivots 24, 25 with elongated cross sec¬ tions are formed, which may be inserted into corre¬ sponding bearings 26, 27 formed at the inner sides of the lateral walls 5, 6 of the cartridge holder 2. In each of the walls 21, 22 of the supporting structure 20, a recess 28, 29 is formed. The recess 28 of the first wall 21 of the supporting structure has a con¬ tour, forming suitable support for a first cartridge comprising two cylinders, and the recess 29 of the second wall 22 of the supporting structure has a con- tour, forming suitable support for a second cartridge comprising two cylinders. By tilting the supporting structure about its rotating shaft 23, so that either the first wall 21 or the second wall 22 are in a ver¬ tical position in relation to the bottom 30 of the cartridge holder 2, the dispenser 1 may thus be used for either said first or said second cartridge. By replacing the supporting structures of the cartridge holder 2 with other supporting structures fitting other cartridges, it is thus possible to use the same dispenser 1 for a number of different cartridges, comprising cylinders of different diameters and with different ratios between the diameters of the two cylinders of the cartridge, which is illustrated in Figures 7 A-D. Furthermore, the recesses 28, 29 are provided with projections 62, 63, which grip the car¬ tridge, so that it is retained, also if the dispenser is turned upside down. Figures 8 and 9 illustrate, in more detail, the configuration of the engagement means between the supporting structures 18, 19 and the cartridge holder 2 in the dispenser 1 shown in Figure 1. Figure 8 shows the supporting structure 20 positioned in the cartridge holder 2 in a position, in which its rotat¬ ing shaft 23 runs across the direction of displace¬ ment of the dispenser plungers 13, 14, so that the pivots 24, 25 are located above their respective bearings 26, 27. In the shown position of the sup¬ porting structure 20, the longitudinal axis of the longitudinal cross section of the pivot 25 runs per¬ pendicularly to the plane of the bottom 30 of the cartridge holder 2, so that, by displacing the sup- porting structure 20 in the downward direction of the figure,- the pivot 25 is able to pass an insertion slot 31 of a wall 32, surrounding a hole 33 formed in the bearing 26 with a substantially circular periph¬ ery. Upon the insertion of the pivot 25 into the hole 33, the supporting structure 20 is pivoted with the pivot 25 into the position shown in Figure 9, in which an end edge 34 of the second wall 22 engages between wedge-shaped projections 35 formed above the bearing 26 at an inner side of the first lateral wall 5 of the cartridge holder 2, closer to an upper edge of the lateral wall 5 than to the bottom 30 of the cartridge holder 2. The engagement between the wall 22 of the supporting structure and the projections 35 takes place by means of elastic deformation of both the supporting structure and the cartridge holder. As shown in Figures 8 and 9, the cross section of the pivot 25 has a maximum length L, by and large corre¬ sponding to the diameter of the hole 33 of the bear- ing 26, the maximum length L being so much smaller than said diameter that the pivot 25 may easily be pivoted in the hole 33, but its position will still be determined fairly accurately. Furthermore, this effect is ensured in that the cross section of the pivot 25 has end sides, which are curved so as to form circular arcs with the diameter L. In addition, the cross section of the pivot 25 has a width B, which is so much smaller than the width of the slot 31 that the pivot 25 is just able to pass through the slot 31 without friction. By tilting the supporting structure 20 about the axis of its rotating shaft 23, from the position shown in Figure 9, in which the se¬ cond wall 22 of the supporting structure is engaging between the projections 35, into a second position, in which the first wall 21 of the supporting struc¬ ture is engaging between the projections 35, the dis¬ penser 1 may be used for a second type of cartridge. In the mounted position of the supporting structure, its rotating shaft 23 engages with a recess 61 of the bottom 30 of the cartridge holder 2, whereby the sup¬ porting structure is retained in a more stabile man¬ ner.
Figure 10 shows a second embodiment of the en- gagement means between a supporting structure 36 and the cartridge holder 2. This supporting structure 36 also comprises pivots 37, which project from ends of a rotating shaft for the supporting structure, as in the embodiment described above. In this embodiment, the pivots 37 are cylindrical and may be journaled in a partially cylindrical bearing 38 formed in a wall 39, formed integrally with and projecting from a lat¬ eral wall of the cartridge holder 2. Between the wall 39 of the bearing and the bottom 30 of the cartridge holder, a slot 40 is formed having a width, which is smaller than the diameter of the pivot 37. The slot
40 may be expanded by means of elastic deformation of the wall 39 by pressing the pivot 37 into the corre¬ sponding bearing 38, thus enabling the supporting structure 36 to be retained pivotally in the bearing and thus fulfilling the same function as the embodi¬ ment described above. Figure 11 shows a third embodiment of the en¬ gagement means between a supporting structure 41 and the cartridge holder 2. The supporting structure 41 has pivots 42, which, by insertion through a slot 43 between two opposite walls 44, may be inserted into a bearing opening 45, in which the pivot 42 may abut an inner side of the wall 44. As an upright wall 47 of the supporting structure 41 abuts a projection 46 on a lateral wall of the cartridge holder 2, the sup¬ porting structure 41 is locked in the position shown. By tilting the supporting structure 41 about the edge between the outer sides of its respective walls, the second wall 48 of the supporting structure may be brought into the upright position and into abutment against the projection 46, thus enabling a _second cartridge to be supported.
Figure 12 shows a fourth embodiment of the en¬ gagement means between a supporting structure 49 and the cartridge holder 2. This supporting structure has pivots 50 with a diamond-shaped cross section, which, when inserting the pivot 50 through a slot 51 between two bearing walls 52, functions as a wedge and ex¬ pands the width of the slot by deformation of the bearing walls 52 in the direction of the arrows shown in the figure. The supporting structure 49 may be re¬ tained in two different supporting positions by means of projections, not shown, on the inner sides of the lateral walls of the cartridge holder, as described for the above-mentioned embodiments.
Figure 13 shows a fifth embodiment of the en¬ gagement means between a pivot 53 of a supporting structure, not shown, and a bearing 54 formed as a projection on a lateral wall 55 of a cartridge hol- der. The pivot 53 has a rounded end 56 fitting into a rounded bearing bush 57 of the projection 54. By dis¬ placing the pivot 53 in parallel, it may be guided into the position shown by the dashed line, by means of elastic deformation of the lateral wall 55 of the cartridge holder and the opposite lateral wall, not shown.
Furthermore, figure 14 shows a sixth embodiment of the engagement means between a supporting struc¬ ture and a cartridge holder 2. In this embodiment, a bearing 58 for the actual rotating shaft 23 of a sup¬ porting structure, for example of the type shown in Figures 4 to 6, is positioned on the top side of the bottom 30 of the cartridge holder 2, at the centre between its lateral walls 5, 6. The bearing 58 may have a cross section approximately corresponding to that of the bearing 26, shown in Figures 8 to 9, as a slot 59 between walls 60 of the bearing are expanded elastically by pressing the rotating shaft 23 into the bearing 58. The various embodiments described above may be combined in many different ways within the scope of the present invention. In particular, the shown piv¬ ots may be placed on the cartridge holder instead of on the supporting structure, and the bearings for the pivots may also be placed on the supporting struc¬ ture. Furthermore, the various bearings illustrated may be placed on the bottom of the cartridge holder instead of on its lateral walls. In addition, it will be possible to form the tiltable supporting structure with more than two walls, for example three walls, thus enabling three different cartridges to be sup¬ ported by means of the same supporting structure. For example, two different types of bearings may be com¬ bined, e.g. a bearing of the type shown in Figures 8 and 9 at one end of the supporting structure and a bearing of the type shown in Figure 13 at the other end of the supporting structure.

Claims

P A T E N T C L A I M S
1. A dispenser (1) for pressing out material from a cartridge, comprising' a cartridge holder (2) for a cartridge, which has one or more cylinders, and one or more plungers (13, 14) for pressing out mate¬ rial from a cylinder, as well as a driving means for driving the plunger or plungers, the cartridge holder (2) comprising at least one supporting structure (18, 19, 20, 36, 41, 49) , which is moveable between a first position, in which suitable support for a first cartridge is provided, and a second position, in which suitable support for a second cartridge is pro¬ vided, c h a r a c t e r i z e d in that the sup¬ porting structure (18, 19, 20, 36, 41, 49,) comprises first engagement means (24, -25, 37, 42, 50, 53, 23) for releasable engagement with corresponding second engagement means (26, 27, 39, 44, 52, 54, 60) formed in the cartridge holder, so that the supporting structure may be replaced without the use of tools.
2. A dispenser according to claim 1, c h a r ¬ a c t e r i z e d in that the engagement means com¬ prise a pivot (24, 25, 37, 42, 50, 53, 23) for inser¬ tion into a corresponding bearing (26, 27, 39, 44, 52, 54, 60), the supporting structure (18, 19, 20, 36, 41, 49,) thus being tiltable between its first position and its second position by pivoting the pivot in its corresponding bearing.
3. A dispenser according to claim 2, c h a r ¬ a c t e r i z e d in that at least one bearing is formed as a hole (33, 38, 45, 57) , surrounded by a wall (32, 39, 44, 52, 54, 60), in which an insertion slot (31, 40, 43, 51, 59) for a pivot (24, 25, 37, 42, 50, 23) is formed.
4. A dispenser according to claim 3, c h a r ¬ a c t e r i z e d in that at least one pivot (24, 25, 37, 50, 23) has an elongated cross section, and in that the insertion slot (31, 40, 51, 59) of the corresponding bearing has a width, which is smaller than the maximum length of the cross section of the pivot .
5. A dispenser according to claim 4, c h a r ¬ a c t e r i z e d in that the hole of the bearing (26, 27, 39, 54, 60) , corresponding to the at least one pivot (25, 37, 53, 23), is substantially cylin¬ drical having a diameter corresponding approximately to the maximum length of the cross section of the pivot.
6. A dispenser according to claims 4 or 5, c h a r a c t e r i z e d in that the insertion slot (31, 43) has a width, which is larger than the maximum width of the cross section of the pivot (25, 42) .
7. A dispenser according to any one of claims 3 to 6, c h a r a c t e r i z e d in that the second engagement means are formed by the at least one bear¬ ing (26, 27, 39, 44, 52, 54, 60) and are positioned at a bottom (30) of the cartridge holder (2) , and in that the insertion slots (31, 40, 43, 51, 59) are facing away from the bottom (30) .
8. A dispenser according to claim 7, c h a r ¬ a c t e r i z e d in that the wall (32, 39, 44, 52, 54) of the bearings projects from opposite inner faces (5, 6) of the cartridge holder (2) .
9. A dispenser according to any one of the pre¬ ceding claims, c h a r a c t e r i z e d in that the supporting structure (18, 19, 20, 36, 41, 49) comprises an at least partially cylindrical shaft (23) extending between respective first engagement means at opposite ends of the supporting structure, and in that, in a bottom (30) of the cartridge holder, a recess (61) is formed for partially accom¬ modating the shaft (23) .
10. A dispenser according to any one of the preceding claims, c h a r a c t e r i z e d in that the supporting structure (18, 19, 20, 36, 41, 49) comprises two mutually angled walls (21, 22) , in each of which a recess (28, 29) is formed having a con¬ tour, which forms a suitable supporting structure for a cartridge of a particular size or shape.
11. A dispenser according to claim 10, c h a r a c t e r i z e d in that the contour of the recess (28, 29) of each of the angled walls (21, 22) forms mutually facing projections (62, 63) , which, when inserting a cartridge, grip and retain it, as the cartridge yields elastically to the pro- jections during insertion.
12. A dispenser according to one of the preced¬ ing claims, c h a r a c t e r i z e d in that, at inner faces of the cartridge holder, latch means (35) for engagement with end edges (34) of the supporting structure are formed, the supporting structure thus being lockable in its first position and its second position, respectively.
13. A dispenser according to claim 12, c h a r a c t e r i z e d in that the latch means (35) are in the form of wedge-shaped projections, and in that a pair of opposite projections is placed above each bearing (26, 27, 39, 44, 52, 54) and closer to an upper edge of the cartridge holder (2) than to the bearing, so that an end edge of a wall of the supporting structure may engage between the two projections of the pair.
14. A method for mounting a supporting struc- ture in a cartridge holder (2) of a dispenser (1) , c h a r a c t e r i z e d in that the supporting structure (18, 19, 20, 36, 41, 49,) is inserted be¬ tween opposite walls (5, 6) of the cartridge holder and is positioned above bearings (26, 27, 39, 44, 52, 54) on the walls in such a manner that an axis of ro¬ tation of the supporting structure is substantially- perpendicular to the walls, whereafter pivots (24, 25, 37, 42, 50) of the supporting structure are passed through insertion slots (31, 40, 43, 51, 59) of walls surrounding the bearings by means of a sub¬ stantially parallel displacement of the supporting structure, and whereafter the supporting structure is pivoted about its axis of rotation, until it engages with projections of the cartridge holder.
PCT/DK2005/000518 2004-08-09 2005-08-05 Dispenser for pressing out material from a cartridge WO2006015596A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DK200401204A DK200401204A (en) 2004-08-09 2004-08-09 Dispenser for extruding material from a cartridge
DKPA200401204 2004-08-09

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WO2006015596A1 true WO2006015596A1 (en) 2006-02-16

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FR2920325A1 (en) * 2007-09-03 2009-03-06 Jacques Jean Antoine Chanet PNEUMATIC EXTRUDER PISTOL DEVICE FOR PASTE CARTRIDGE PRODUCT AND IMPROVEMENTS THEREOF.
EP2050511A1 (en) 2007-10-19 2009-04-22 HILTI Aktiengesellschaft Dispensing apparatus
US8528785B2 (en) 2010-11-15 2013-09-10 Milwaukee Electric Tool Corporation Powered dispensing tool
US8740021B2 (en) 2010-11-15 2014-06-03 Milwaukee Electric Tool Corporation Powered dispensing tool
US8857672B2 (en) 2011-06-20 2014-10-14 Milwaukee Electric Tool Corporation Carriage assembly for dispensing tool
US9039557B2 (en) 2011-09-02 2015-05-26 Milwaukee Electric Tool Corporation Powered dispensing tool

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EP0452270A1 (en) 1990-04-10 1991-10-16 Wilhelm A. Keller Dispensing device using double cartridges
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Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2920325A1 (en) * 2007-09-03 2009-03-06 Jacques Jean Antoine Chanet PNEUMATIC EXTRUDER PISTOL DEVICE FOR PASTE CARTRIDGE PRODUCT AND IMPROVEMENTS THEREOF.
EP2050511A1 (en) 2007-10-19 2009-04-22 HILTI Aktiengesellschaft Dispensing apparatus
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US8141753B2 (en) 2007-10-19 2012-03-27 Hilti Aktiengesellschaft Ejection device
US8528785B2 (en) 2010-11-15 2013-09-10 Milwaukee Electric Tool Corporation Powered dispensing tool
US8740021B2 (en) 2010-11-15 2014-06-03 Milwaukee Electric Tool Corporation Powered dispensing tool
US8875948B2 (en) 2010-11-15 2014-11-04 Milwaukee Electric Tool Corporation Powered dispensing tool
US9511923B2 (en) 2010-11-15 2016-12-06 Milwaukee Electric Tool Corporation Powered dispensing tool
US8857672B2 (en) 2011-06-20 2014-10-14 Milwaukee Electric Tool Corporation Carriage assembly for dispensing tool
US9039557B2 (en) 2011-09-02 2015-05-26 Milwaukee Electric Tool Corporation Powered dispensing tool

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