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Publication numberUS3140078 A
Publication typeGrant
Publication dateJul 7, 1964
Filing dateJun 15, 1961
Priority dateJun 15, 1961
Publication numberUS 3140078 A, US 3140078A, US-A-3140078, US3140078 A, US3140078A
InventorsHerbert E Grubb, Donald C Krahe
Original AssigneeAdhesive Eng Co
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Mixing and dispensing device
US 3140078 A
Abstract  available in
Images(1)
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Claims  available in
Description  (OCR text may contain errors)

July 7, 1 964 D. C. KRAHE ETAL MIXING AND DISPENSING DEVICE Filed June 15. 1961 INVENTORS: #525527 621/55 DOA/4L0 C. IKE/WE f A TTOENEYS United States Patent 3,140,078 MIXING AND DISPENSING DEVICE Donald C. Krahe and Herbert E. Grubb, San Carlos, Calif, assignors, by mesne assignments, to Adhesive Engineering Company, a corporation of California Filed June 15, 1961, Ser. No. 117,305 2 Claims. (Cl. 259-47) This invention relates to a device for storing, mixing and dispensing a two part composition. Such compositions must be kept separate until just prior to the dispensing operation and they must be mixed thoroughly before they can be used. Although the invention is primarily applicable to an inexpensive throw-away mixer and dispenser, the device can be cleaned and reused. The device of the present invention is particularly useful with an epoxy resin wherein a catalyst must be mixed with the resin and the mixture used almost immediately but it can be used in any situation wherein two components must be mixed just prior to use.

It is therefore an object of the present invention to provide a simple yet effective device wherein a two-component mixture may be stored with the components separated until just prior to use whereupon the two components can be thoroughly mixed and then dispensed.

Other objects and features of the invention will be apparent from the specification which follows.

In the drawings forming part of this application:

FIGURE 1 is a perspective view, with certain parts cut away, of a device embodying the present invention;

FIGURE 2 is an enlarged side view, partially in section, of a device embodying the present invention;

FIGURE 3 is a section on the line 33 of FIGURE 2 showing the piston;

FIGURE 4 is a section on the same line as FIGURE 3 but showing the piston in open position;

FIGURE 5 is an exploded view of an alternate form of piston and FIGURE 6 is a partial view of a device embodying the invention utilizing the piston of FIGURE 6.

Referring now to the drawing by reference characters, there is shown in FIGURES 1 through 4 a storage, mixing and dispensing device generally designated 8 having a cylindrical chamber 10 one end of which is provided with a dispensing nozzle 12 which is closed by a removable cap 14. At the opposite end of cylinder 10 is an end plate 16 having a central boss 18 adapted to receive a piston rod 20. The boss 18 may be provided with an O ring 22 to insure a tight seal. Further, the end 16 is provided with a small vent opening 24 which is normally closed with a snap-01f fitting 26. The piston rod is provided at one end with a knob 28 so that it can be easily manipulated while the opposite end is provided with the composite piston generally designated 30.

The composite piston 30 is composed of two parts, namely a first disc 32 of a relatively hard plastic which may be formed as part of or rigidly affixed to piston rod 20 and the second disc 34 of a relatively soft plastic, such as polyethylene, which has a lip 36 on its periphery so that the discs 32 and 34 are held by the lip 36 in face-toface engagement yet are free to turn relative to each other. The disc 32, of hard plastic, has at least one pro jection 38 on its periphery while the disc 34 has at least one slot 40 located within the lip 36. Thus, the projection and slot limit the rotational movement possible between the discs. The disc 32 has a series of openings 42 therein while the disc 34 has corresponding openings 44. It will be understood that the openings 42 and 44 correspond with each other while the solid portions between the openings, respectively 48 and 50, are slightly larger than the openings so that when the piston is in the closed position, as is illustrated in FIGURE 3, there will be a slight overlapping of the solid portions 48 and 50 of the two discs.

3,148,878 Patented July 7, 1964 The openings are made as large as possible, while retaining the sealing possibility, so that when the discs are in the open position shown in FIGURE 4, the openings through the piston will be as large as possible. It will also be understood that the length of the slot 40 will determine the amount of movement possible between the two pistons and that the length of this slot, minus the width of a projection 38 will determine the relative motion. Further, although six openings have been shown in each of the pistons, the number of openings might be decreased in which the slot 30 would become larger or the number of openings might be increased in which case the slot would be made shorter. Further, instead of using a single projection 38 and single slot 40, the entire periphery of two pistons can be provided with mating projections and slots.

In FIGURES 5 and 6 there is shown an alternate embodiment wherein a piston rod 52 has attached thereto a first disc 54 having a series of slots 56 therein. The rod 52 extends beyond the disc 54 as at 58 and has a small slot 60 therein. A second disc 62 is provided with an annular slot 64 which is adapted to receive an O-ring 66. A small radial hole 68 leads from the slot 64 to the bearing hole 70 in the center of the disc. The bearing hole 70 is of such size that the disc can turn freely on the rod extension 58. The device is assembled as is shown in the FIGURE 6. The disc 62 is placed on the end of the shaft 58 and a pin 74 is placed in the hole 68. The O ring 66 is then placed in the slot 64, the O-ring serving the dual purpose of holding the pin 74 in place and providing a substantially fluid-tight seal with the piston wall 76. It will be noted that in this case the leading face 78 of the second disc 62 is made convex to conform with the configuration of the front wall 80 of the injection device so that there will be no dead space, insuring a complete mixing of the contents as well as complete ejection.

Turning now to a description of the operation of the device it will be noted in FIGURE 2 that the cylindrical portion is divided by the piston into two chambers 82 and 84. In dealing with many compositions it will be desirable to have the two chambers of equal size although the size relationship can be altered by moving the piston. The device will be assembled and filled as is shown in FIGURE 2 with the composite piston in its closed position with one of the components in the chamber 82 and the other of the components in the chamber 84. For instance, the chamber 84 might be filled with a setting catalyst for an epoxy resin while the chamber 82 is filled with the resin itself. The device would be stored and sold in this condition. When the user wished to utilize the composition he would rotate the handle 28 slightly to move one disc relative to the other. There is sufficient friction between the forward disc and the cylinder so that when the rear disc rotates the forward disc will tend to remain stationary. The piston would then be worked back and forth a number of times thoroughly mixing the contents of the compartments 82 and 84. After mixing is complete, the handle 28 would be retracted to its extreme rear position and given a slight rotational movement to close the piston. The cap 14 would then be taken off and the air vent 24 opened by breaking off the small projection 26. The contents would then be expelled by pushing on the handle 28. The contents might be expelled at one time or might be expelled a small amount at a time over a considerable period, the period being determined by the setting rate of the particular plastic employed.

It is believed apparent from the foregoing that we have provided a simple yet effective device which serves as a storage chamber, a mixing chamber and dispensing device for a two-component plastic. Although after expelling the contents the device might be cleaned and refilled, nor mally the device is so inexpensive that it would be discarded after a single usage.

3 i We claim: first disc being loosely secured in the said channel for 1. A storage, mixing and dispensing device for a tworotation relative to said second disc, said first and component mixture comprising: second discs being held in a unitary relationship sole- (a) a cylinder having a discharge opening at one end ly by means of said channel, said second disc having thereof and a normally sealed air inlet at the opposite 5 an integral rod at the center thereof extending through end with a snap-off fitting for opening said vent; and the end of the cylinder opposite the discharge open- (b) a normally closed piston dividing the cylinder into ing, said rod having a handle on the exposed end two chambers, said piston being formed of a first and thereof. a second disc each having holes therein, said holes be- 2. The structure of claim 1 wherein the said collar has ing in registration when said discs are in a first posi- 10 an internal groove and the first of said discs has a tongue tion and forming a solid piston when the first of said along the periphery thereof adapted to register with the discs is rotated to a second position relative to the said groove, the size of the said groove being such as to persecond of Said discs, the first of said discs being of a mit the discs to be rotated relative to one another suifidiameter slightly less than the interior diameter of ciently far that in a first position said holes are in registrathe said cylinder and the second of said discs having 15 tion and in a second position said holes are not in reg- 'a cylindrical collar securedat right angles thereto at istration, thus forming asolid piston. the extreme outer edge thereof, said collar passing between said first disc and the internal wall of the said R f r n Cited in the fil f this pa en cylinder, said collar having an integral lip parallel UNITED STATES PATENTS to the said second disc extending from the said collar inwardly toward the center of said disc whereby said 20 ggg ggg fi'g 'g lip and said collar together with said second disc 2,571,542 Collins Oct. 16, 1951 form a channel for the receipt of said first disc, said

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US1296341 *Apr 2, 1917Mar 4, 1919William J TowleAir-inlet means for containers.
US1998692 *Oct 10, 1933Apr 23, 1935Oramold Products CorpKneading or mixing device
US2571542 *Dec 10, 1947Oct 16, 1951Collins Arthur JClosure for pouring spouts, connected thereto by a weakened, frangible element
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3164303 *Dec 4, 1961Jan 5, 1965Semco Res IncStorage and mixing cartridge
US3188056 *May 4, 1964Jun 8, 1965Pyles Ind IncCartridge type plural component mixing and dispensing device
US3216616 *Mar 2, 1964Nov 9, 1965Blankenship Jr HomerSyringe with upper and lower bores
US3266671 *Dec 16, 1963Aug 16, 1966Kenneth GelpeyCompartmented dispenser for plural fluids
US3353918 *Oct 24, 1963Nov 21, 1967Perrin Alan PhilipApparatus for manufacturing mouldable urethane foams
US3475010 *Apr 24, 1968Oct 28, 1969Prod Res & Chem CorpDispensing cartridge for intermixing separate ingredients
US4027810 *Jan 27, 1976Jun 7, 1977Voplex CorporationSealing plunger for cartridge
US4197967 *Aug 9, 1978Apr 15, 1980Denso-Chemie Wedekind KgPiston-cylinder unit particularly for an extrusion cartridge
US4272199 *Feb 27, 1976Jun 9, 1981Hade Horace AMixing container
US4461407 *Aug 14, 1981Jul 24, 1984Danny FinneganAutomatic pressure release mechanism for caulk gun
US4676406 *Sep 29, 1986Jun 30, 1987Upat & Co., GmbhSquirt cartridge for mixing and dispensing a two-component mass
US4737036 *Jun 16, 1986Apr 12, 1988Axel OffermannDevice for whipping cream or egg whites or for preparing mayonnaise
US4750615 *Jul 1, 1986Jun 14, 1988Intecser S.A.Apparatus to maintain separate until the moment of use, two different substances within a container, particularly two-component resins
US4905872 *Jan 23, 1989Mar 6, 1990Fischerwerke Artur Fischer Gmbh & Co. KgVessel for injecting bonding agent
US5071040 *Mar 9, 1990Dec 10, 1991Pfizer Hospital Products Group, Inc.Surgical adhesives mixing and dispensing implement
US5158214 *Mar 11, 1991Oct 27, 1992Jnj Industries Inc.Solder paste applicator and mixing tool
US5501371 *Jul 7, 1994Mar 26, 1996Schwartz-Feldman; JeanMixing syringe
US5533802 *Mar 6, 1995Jul 9, 1996Garganese; Richard S.Paint can accessory
US5595752 *Jul 1, 1994Jan 21, 1997Monsanto CompanyIncreasing dressing percentage and carcass weight in finishing beef cattle
US5670162 *Jun 2, 1995Sep 23, 1997Monsanto CompanyMethod and device for implantation of large diameter objects in bovines
US5672357 *Jul 1, 1994Sep 30, 1997Monsanto CompanyMethod and device for implantation of large diameter objects in bovines
US5829875 *Apr 2, 1997Nov 3, 1998Simpson Strong-Tie Co., Inc.Combined barrier and mixer assembly for a cylindrical container
US5887765 *Aug 1, 1997Mar 30, 1999Dripless, Inc.Caulk gun
US6283627Sep 12, 2000Sep 4, 2001Wayne G. FrommDrink mixer
US6367962 *Jun 20, 2000Apr 9, 2002Ngk Spark Plug Co., Ltd.Device and method for preparing calcium phosphate-based bone cement
US6550957Feb 22, 2002Apr 22, 2003Ngk Spark Plug Co., Ltd.Device and method for preparing calcium phosphate-based cement
US6737000 *Jul 24, 2001May 18, 2004Simpson Strong-Tie Company, Inc.Method for mixing, combining and dispensing reactive two component materials using a rotary stop cock
US6896001Nov 12, 2003May 24, 2005Simpson Strong-Tie Company, Inc.System and kit for dispensing reactive two component materials
US6974247 *Oct 11, 2004Dec 13, 2005Synthes (U.S.A.)Device for mixing and/or injecting cements
US7168847 *Nov 17, 2005Jan 30, 2007Synthes (Usa)Device for mixing and/or injecting cements
US7393342Aug 13, 2007Jul 1, 2008Stryker CorporationBone cement mixing and delivery system including a delivery gun and a cartridge having a piston, the delivery gun configured to release the piston
US7513679 *Jun 23, 2003Apr 7, 2009Asept Medical AbDevice for mixing and delivering bone cement
US7524103 *Aug 19, 2004Apr 28, 2009Boston Scientific Scimed, Inc.Apparatus for mixing and dispensing a multi-component bone cement
US7677418Jun 13, 2008Mar 16, 2010Stryker CorporationBone cement cartridge with a releasably locked drive piston, the piston configured to be unlocked by a delivery device
US7699804Jan 30, 2004Apr 20, 2010Creare Inc.Fluid ejection system
US7905654 *Apr 18, 2007Mar 15, 2011Luis CorderoHand held manually operated mixer
US8038682Aug 17, 2004Oct 18, 2011Boston Scientific Scimed, Inc.Apparatus and methods for delivering compounds into vertebrae for vertebroplasty
US8061887Feb 12, 2010Nov 22, 2011Stryker CorporationCartridge in which bone cement is mixed and from which bone cement is delivered, the cartridge having a compressible blade with plural vanes
US8075176 *Feb 14, 2011Dec 13, 2011Luis CorderoHand held manually operated mixer
US8167479 *May 27, 2008May 1, 2012Impianti Oms S.P.A.Apparatus for dosing and mixing solid powders in technological processes for converting plastic materials
US8353622Nov 11, 2011Jan 15, 2013Stryker CorporationCartridge from which bone cement is discharged, the cartridge having a removably coupled nozzle
US8721600Nov 30, 2012May 13, 2014Stryker CorporationDelivery gun for dispensing bone bement from a cartridge, the gun having a multi-link linkage and capable of dispensing the cement at different flow rates
US20120265209 *Apr 13, 2011Oct 18, 2012Kyphon SarlApparatus and methods for mixing materials
DE2307659A1 *Feb 16, 1973Aug 30, 1973Hans P HuerlimannVorrichtung zum behandeln von stoffen
DE2949369A1 *Dec 7, 1979Jun 11, 1981Hilti AgGeraet zum abgeben von mehrkomponentenmassen
DE3208472A1 *Mar 9, 1982Sep 15, 1983Willich F Gmbh & CoTwo-component container
DE3439975A1 *Nov 2, 1984Jun 20, 1985Upat Max Langensiepen KgInjection cartridge
DE3613660A1 *Apr 23, 1986Oct 29, 1987Fischer Artur Werke GmbhInjection device for a curable binder comprising at least two components
DE3708803A1 *Mar 18, 1987Sep 29, 1988Fischbach A Kunststoff KgMischvorrichtung fuer pastoese mehrkomponenten-massen
DE8812502U1 *Oct 5, 1988Dec 15, 1988Hoernlein, Reinhard, 3450 Holzminden, DeTitle not available
DE10242984A1 *Sep 17, 2002Mar 25, 2004Sanatis GmbhArrangement for producing two component mixture comprises two containers, contacting unit, mixing unit and mixing chamber
DE10242984B4 *Sep 17, 2002Sep 23, 2010Sanatis GmbhVorrichtung zum Herstellen von Gemischen aus zwei Komponenten
EP0012726A2 *Jul 4, 1979Jun 25, 1980Ezio RomeiHigh-speed, high-powered mixer for heat and cold treatment of viscous materials
EP1433446A2 *Oct 4, 2000Jun 30, 2004NGK Spark Plug Co., Ltd.Assisting-tool for extruding a chemical agent, kneader for preparing and extruding a chemical agent, and methods for using the same
WO2012038002A1 *Aug 10, 2011Mar 29, 2012Heraeus Medical GmbhMixing device for prepack vacuum cementing system, vacuum cementing system and method
Classifications
U.S. Classification366/256, 222/327, 222/136, 222/386
International ClassificationB01F11/00, B01F15/02, B01F15/00, B01F13/00
Cooperative ClassificationB01F15/0213, B01F11/0082, B01F15/0223, B01F15/0205, B01F13/002, B01F13/0023, B01F15/00506
European ClassificationB01F13/00K2B, B01F15/02B6P, B01F13/00K2B4, B01F15/02B20B, B01F15/02B6, B01F11/00N2