Gear-type Stirrer Patents (Class 366/272)
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Publication number: 20140294693Abstract: A portable biodiesel manufacturing or processing plant for processing on continuous basis a raw plant based oil feedstock to form biodiesel.Type: ApplicationFiled: December 20, 2012Publication date: October 2, 2014Applicant: The Biocube CorporationInventors: Laurence Baum, A Alexander Kelly
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Publication number: 20130114370Abstract: A magnetically-driven stirring structure includes a transmission base, and a cup can be mounted to the transmission base or positioned on the transmission base. The transmission base includes a rotary mechanism, and the rotary mechanism is coupled to a first magnetic member. The rotary mechanism is coupled to an operating member in such a way that the operating member is exposed outside the transmission base. With a second magnetic member being placed in the cup, in making or brewing a drink in the cup, through actuation caused by the operating member, the rotary mechanism is made rotating and driving the first magnetic member to rotate, whereby the second magnetic member placed in the cup is caused by magnetism to rotate in the same direction so as to achieve stirring of the drink contained in the cup.Type: ApplicationFiled: November 8, 2011Publication date: May 9, 2013Inventor: PEI-CHUAN MA
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Publication number: 20130033958Abstract: A machine for the treatment of food mixtures with centralized activation includes a collection container or cylinder for a food mixture, in which a rotating shaft is positioned, wherein, on a sleeve at least partially integral with the rotating shaft, there is a shaped support for both a treatment tool and for scraping and mixing blades of the walls and bottom of the container or cylinder, the shaped support carrying transmissions for the rotation of both the treatment tool and the scraping and mixing blades and the shaped support.Type: ApplicationFiled: April 12, 2011Publication date: February 7, 2013Applicant: G.S.G. S.R.L.Inventor: Genesio Bravo
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Publication number: 20110292757Abstract: The present invention relates to a gearbox for a mixer-blender including a planet wheel (5), a planet carrier (7) comprising a body defining an enclosure, at least one planet gear (6) provided with external teeth and pivotably mounted on the planet carrier (7), said planet gear (6) meshing with the planet wheel (5), and characterised in that the body of the planet carrier (7) is shaped so as to engage with a driving member such that said driving member rotates the planet carrier (7).Type: ApplicationFiled: December 11, 2009Publication date: December 1, 2011Applicant: VMIInventors: Jose Cheio De Oliveira, Henri Daheron, Pascal Ricard
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Patent number: 8007163Abstract: A mixer body has an interior bore and an exterior surface. The exterior surface has first and third stages and an intermediate second stage. The mixer body forms a support ring. The second stage has threads. The third stage has holes. Pins are secured to the support ring. A turbine is rotatably coupled to each pin. The disk has arcuate ends and cut away sections. A cylinder has first and third stages and an intermediate second stage. The cylinder has an input end with a large opening for receiving a pipe. The cylinder has an output end with a discharge opening. The second stage of the cylinder has threads coupled to the mixer body. The third stage of the cylinder supports the turbines and the disk. When the mixing body and cylinder are threaded together, they form a chamber.Type: GrantFiled: May 28, 2009Date of Patent: August 30, 2011Inventor: Larry J. Chernoff
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Patent number: 7942567Abstract: An extruder system includes an extruder for axially extruding a rubber or plastic material in a barrel. A gear pump adjusts an amount of extruded material that is discharged by engagement of gears. The gear pump includes a driving pinion and a driven pinion engaged with, and driven by, the driving pinion. A gear casing accommodates the pinions and includes side plates on both axial sides of the pinions. A casing body is arranged between the side plates and encloses a space on a radially outer side of the pinions. The side plate includes a suction side plate that has a suction port arranged opposite to that side of engagement region between the pinions and a discharge side plate that has a discharge port arranged opposite to that side of engagement region between the pinions. The suction and discharge ports are maintained out of axial communication with each other.Type: GrantFiled: December 24, 2004Date of Patent: May 17, 2011Assignee: Bridgestone CorporationInventor: Yuichiro Ogawa
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Publication number: 20100260005Abstract: An apparatus for frothing a liquid food product is disclosed. It comprises a drive unit (1) and a frothing unit (3). The frothing unit (3) comprises a guide rod (30), which is configured along at least one section as a threaded rod (31). A frothing element (40) is in threaded engagement with the guide rod (30) and can thus be moved along a helical path on the guide rod (30). At least one dog (36, 36?) is driven by the drive unit (1) in a circular motion about the longitudinal axis of the guide rod (30) and in the process entrains the frothing element (40) such that said element is driven to perform a helical motion on the guide rod (30). In this way, the frothing element can perform an up and down motion superimposed on the rotational motion thereof along the longitudinal direction.Type: ApplicationFiled: October 2, 2008Publication date: October 14, 2010Applicant: PI-DESIGN AGInventor: Jorgen Bodum
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Publication number: 20100214867Abstract: Food processing apparati including magnetic drives are described herein. According to one exemplary embodiment, a food processing apparatus may include a motor having a motor shaft, a rotor rotatably mounted on the motor shaft, and a stator producing an electromagnetic field for interacting with the rotor. The rotor may magnetically drive a drive plate coupled to an impeller inside a food-contact chamber.Type: ApplicationFiled: February 24, 2009Publication date: August 26, 2010Inventors: John F. Karkos, JR., Ron Flanary
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Publication number: 20100124143Abstract: A mixing assembly for mixing bone cement includes a housing, a lid, a handle, and two mixing paddles, a first and a second mixing paddle. The lid is removably attachable to the housing. The handle has a portion that extends through the lid and that is rotatable in a first rotational direction. The first mixing paddle is operatively coupled to the portion of the handle. As a result, the first mixing paddle rotates with the portion of the handle in the first rotational direction. The second mixing paddle is operatively coupled to the first mixing paddle for rotating opposite the portion. As such, when the portion of the handle and the first mixing paddle rotate in the first rotational direction, the second mixing paddle rotates in a second rotational direction that is opposite the first rotational direction.Type: ApplicationFiled: January 12, 2010Publication date: May 20, 2010Inventors: Christopher Matthew Tague, Richard F. Huyser, Jared Paul Coffeen, Christopher Scott Brockman
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Patent number: 7597145Abstract: Methods, devices, and systems are disclosed for combining fluids of different pressures and flow rates in, for example, gas gathering systems, gas wells, and other areas in which independently powered compressors or pumps are not desired.Type: GrantFiled: June 27, 2005Date of Patent: October 6, 2009Assignee: Blue Marble Engineering, L.L.C.Inventors: Philip Allard, Stanley D. Benham
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Publication number: 20090190439Abstract: Disclosed is a food blender. The blender comprises an epicyclic gear set so that at least one of the beater moves along a hypotrochoid trace and rotates along its axe at the same time. The blender provides a better mixing result comparing to food blenders in prior arts.Type: ApplicationFiled: January 28, 2008Publication date: July 30, 2009Inventor: Yan Hoi Yeung
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Publication number: 20090080285Abstract: An appliance configured to process food includes a primary motor and a secondary motor. The primary motor is configured to rotate a blade connected to a spindle and the blade and the spindle are positioned above a blade platform. The primary motor is mounted on a second platform. The second motor is configured to translate the blade platform and the spindle by a first linkage from a first position to a second position relative to the second platform.Type: ApplicationFiled: September 26, 2007Publication date: March 26, 2009Applicant: Proteus Design, Inc.Inventors: John C. Brotz, Ryan C. Scribner, Tamimu A. Shyllon, Mary T. Sarich
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Patent number: 7354188Abstract: The invention relates to a gear pump which is suitable for delivering highly viscous materials. The aim of the invention is to provide a gear pump having a low-wear and low-maintenance bearing system, high output and good self-cleaning properties. For this purpose, the gear pump according to the invention comprises a housing, a gear section comprising a sun wheel and a plurality of stationarily mounted planet wheels, an input screw section comprising an input screw shaft linked with the sun wheel in a rotationally fixed manner and an input transfermix area, and an output screw section comprising an output screw shaft linked with the sun wheel in a rotationally fixed manner and an output transfermix area. The screw shafts, in the transfermix areas, have flight depths that decrease toward the gear section.Type: GrantFiled: October 19, 2004Date of Patent: April 8, 2008Assignees: Berstorff GmbH, VMI - AZ Extrusion GmbHInventors: Reinhard Uphus, Olaf Skibba
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Publication number: 20080068925Abstract: A mixing machine includes a head extending over a bowl receiving location. The head includes a shaft receiving opening extending upwardly therein and a rotatable mixing shaft having a lower portion extending below the head and an upper portion within the shaft receiving opening. An upwardly facing bearing shoulder is within the shaft receiving opening. An upper bearing member is disposed within the shaft receiving opening and about the mixing shaft. The upper bearing member is supported by the upwardly facing bearing shoulder. A gear system is in the head for effecting planetary movement of the mixing shaft. The gear system includes a gear member disposed about an upper end of the mixing shaft and linked to the upper end of the mixing shaft for effecting rotation of the mixing shaft. The gear member is supported by an upper side of the upper bearing member and the shaft is supported by the gear member.Type: ApplicationFiled: July 13, 2007Publication date: March 20, 2008Applicant: Premark FEG L.L.C.Inventor: John E. Brinkman
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Publication number: 20070297283Abstract: A kitchen appliance in the form of a stand mixer has an electric motor driving a mixing implement via a gear box. The gear box includes a worm on a shaft mating with a worm gear to achieve speed reduction and a change in the axis of rotation.Type: ApplicationFiled: June 21, 2007Publication date: December 27, 2007Inventors: Jing Ning Ta, Jie Tao
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Patent number: 6601987Abstract: The invention pertains to an apparatus for premixing additives and feeding them into a polymer melt stream. The apparatus has a conducting element 2, first and a second intermediate element 4a and 4b, and a pump assembly 6, wherein the polymer melt stream is guided through channels 8 and 10 of the conducting element. The second intermediate element 4a has a feed element 12 that extends into the first channel 8 to form a ring channel. The feed element 12 is surrounded by openings 14, through which a portion of the polymer melt is drawn off, so that it can be mixed with an additive inside the pump assembly 6. This mixture is then returned via the feed element 12 to the polymer melt stream. The apparatus according to the invention makes it possible to decrease the residence times of the polymer and requires very little in the way of apparatus.Type: GrantFiled: October 5, 2001Date of Patent: August 5, 2003Assignee: Zimmer AGInventors: Horst Finder, Bernd Helmstorff
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Publication number: 20030086331Abstract: An extrusion molding machine has a main extrusion molding device, and a drive mechanism connected to the main extrusion molding device. The drive mechanism has a motor device, a transmission case, and a drive shaft connected to the motor device. The drive shaft passes through the transmission case. The main extrusion molding device has an upper feed inlet, a lower chamber, and a gear mechanism therein. The gear mechanism has a first pinion, a second pinion engaging with the first pinion, a third pinion engaging with the second pinion, a main gear engaging with the first pinion, a fourth pinion engaging with the main gear, a fifth pinion engaging with the fourth pinion, a sixth pinion engaging with the fifth pinion, and a seventh pinion engaging with the sixth pinion. The main gear encloses the drive shaft.Type: ApplicationFiled: November 8, 2001Publication date: May 8, 2003Inventor: Jun-Rong Lin
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Patent number: 6422737Abstract: An apparatus for mixing dissimilar fluids or fluids having different densities is disclosed. A piston shaped for a close fit and slidably mounted within a tubular member divides a material container into a pressurized end and a mixing chamber. A pump is sealably attached to a base plate. The pump communicates with the mixing chamber through an inlet. The outlet bore is directed so that the discharging mixture from the pump causes a turbulent mixing action within the mixing chamber.Type: GrantFiled: March 23, 2001Date of Patent: July 23, 2002Assignee: Welker Engineering CompanyInventor: Brian H. Welker
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Publication number: 20020075756Abstract: The invention pertains to an apparatus for premixing additives and feeding them into a polymer melt stream. The apparatus has a conducting element 2, first and a second intermediate element 4a and 4b, and a pump assembly 6, wherein the polymer melt stream is guided through channels 8 and 10 of the conducting element. The second intermediate element 4a has a feed element 12 that extends into the first channel 8 to form a ring channel. The feed element 12 is surrounded by openings 14, through which a portion of the polymer melt is drawn off, so that it can be mixed with an additive inside the pump assembly 6. This mixture is then returned via the feed element 12 to the polymer melt stream. The apparatus according to the invention makes it possible to decrease the residence times of the polymer and requires very little in the way of apparatus.Type: ApplicationFiled: October 5, 2001Publication date: June 20, 2002Inventors: Horst Finder, Bernd Helmstorff
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Patent number: 6361200Abstract: The invention relates to a gear extruder for plasticizing and homogenizing rubber mixtures, having at least two gears disposed in chambers in the extruder housing, with the teeth of the gears meshing with one another, and having a port for feeding the rubber mixture to the front of the gears in the extruder housing. The invention is characterized in that gas vent ports are provided in the extruder housing, at the ends of the teeth of the gears, in an area in which the teeth disengage, and/or that at the entrance side of the teeth filled with the rubber mixture. The gas vent ports are provided in the extruder housing in one embodiment so that they extend on the entrance side over no more than half of the circumference of the chambers. By such an arrangement of gas vent ports it has become possible to ventilate a rubber mixture such that volatile components and moisture contained therein can be outgassed, but the rubber mixture is unable to enter the gas vent ports and clog them.Type: GrantFiled: November 13, 2000Date of Patent: March 26, 2002Assignee: Hermann Berstorff Maschinenbau GmbHInventor: Harald Hepke
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Patent number: 6286988Abstract: An extrusion head with a mixing device and an adjustable shear effect, for homogenizing, mixing and shearing the material conveyed to it in form of polyester melts, elastomers and other miscible viscous and paste materials. The extrusion head has a pair of toothed wheels arranged one over the other, with one wheel having a double helical gearing and the other having a pair of axially spaced oblique teeth with a center annular groove. The material supplied flows around one toothed wheel and fills its tooth gaps and those of the other toothed wheel. The material is taken back in the outer region of the one toothed wheel by the rotary movement, is axially crushed out by the other toothed wheel and conveyed into an outlet channel through the groove in the other toothed wheel. The mixing, homogenization and shearing of the material can be adjusted by the drive of the one toothed wheel, thus making it possible to obtain a high outlet temperature where the material is elastomers.Type: GrantFiled: October 16, 1998Date of Patent: September 11, 2001Inventor: Hartmut Hasse
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Patent number: 6158883Abstract: The invention relates to a gear extruder for plasticizing and homogenizing rubber mixtures, having at least two gears disposed in chambers in the extruder housing, with the teeth of the gears meshing with one another, and having a port for feeding the rubber mixture to the front of the gears in the extruder housing. The invention is characterized in that gas vent ports are provided in the extruder housing, at the ends of the teeth of the gears, in an area in which the teeth disengage, and/or that at the entrance side of the teeth filled with the rubber mixture. The gas vent ports are provided in the extruder housing in one embodiment so that they extend on the entrance side over no more than half of the circumference of the chambers. By such an arrangement of gas vent ports it has become possible to ventilate a rubber mixture such that volatile components and moisture contained therein can be outgassed, but the rubber mixture is unable to enter the gas vent ports and clog them.Type: GrantFiled: January 29, 1998Date of Patent: December 12, 2000Assignee: Hermann Berstorff Maschinenbau GmbHInventor: Harald Hepke
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Patent number: 5453250Abstract: Leakage problems can be avoided in an apparatus for the preparation of a solid or cellular plastic-forming, flowable reaction mixture of at least two flowable reaction components and at least one additional component, by providing in the feed pipe of one of the reaction components a mechanical pre-mixer having a stirrer shaft. Upstream of the pre-mixer, a hydraulic motor comprising two meshing toothed wheels which is driven by the components themselves, is disposed in a manner such that one of the toothed wheels is disposed on an extension of the stirrer shaft, and wherein the bearings of the toothed wheels and the stirrer shaft are outwardly enclosed.Type: GrantFiled: September 16, 1993Date of Patent: September 26, 1995Assignee: Bayer AktiengesellschaftInventors: Karl-Dieter Kreuer, Klaus Schulte
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Patent number: 5452650Abstract: A juicer or a juice extractor having a vertically-arranged grinding chamber and compression chamber. The material to be ground into juice is first ground in the grinding chamber and then compressed in the compression chamber by a pair of Archimedes' screws; and in this case, the direction of movement of the material in the compression chamber is designed so as to be opposite to that in the grinding chamber.Type: GrantFiled: December 23, 1994Date of Patent: September 26, 1995Inventor: Mun-Hyon Lee
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Patent number: 5381730Abstract: A juice extractor for extracting juice from raw juice containing materials includes a raw material supply hopper of a housing engaged with a main body. The juice extractor includes a pair of squeezing rollers engaged with each other and mounted in the housing. Each of the rollers includes a helical gear and a screw at its leading end portion. A filter surrounds the leading end portions of the squeezing rollers and a discharge section plate is mounted at the leading end portion of the housing and has a discharge pressure adjusting device. Ring gears made of synthetic resins are mounted at both sides of the helical gear of one of the squeezing rollers whereby an interval between the helical gears of squeezing rollers is maintained. Grooves are formed at both sides of the threads of the helical gears of each of the squeezing rollers at a location beneath the raw juice material supply hopper.Type: GrantFiled: June 30, 1993Date of Patent: January 17, 1995Inventor: Jong Gill Kim
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Patent number: 5240327Abstract: The invention relates to a method for mixing liquids into each other or different phases into liquid by employing a double loop circulation, created below the surface zone of a reactor, in order to maintain an intensive mixing. It is characteristic of this Bottom Toroidal Roll or BTR principle that the employed mixer has a strong bottom draft and presses obliquely downwards, and that the mixer is installed according to the mixing method of this invention and that the flow pattern thereof is controlled in an exactly determined fashion. In our method the mixer jet hits the cylinder surface of the reactor, so that the jet is divided into two roughly equal parts by adjusting this distribution by means of a back-flow guiding member of the invention, which guiding member is located above the mixer. The rolling motion taking place in the reactor is controlled by means of specific baffles.Type: GrantFiled: October 25, 1991Date of Patent: August 31, 1993Assignee: Outokumpu OyInventors: Bror G. Nyman, Seppo S. Jounela, Launo L. Lilja, Valto J. Makitalo
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Patent number: 5156794Abstract: A pulverizing/kneading apparatus for pulverizing and kneading a material such as a soap compound. The material is supplied in a barrel in which are provided a pair of shafts respectively having feeding helical gears and returning helical gears. The material supplied is kneaded and the fine particles contained in the material pulverized by the gears. The forward driving force of the feeding gears is larger than the backward driving force of the returning gears so that the material advances forwardly toward the discharge opening of the barrel.Type: GrantFiled: June 25, 1991Date of Patent: October 20, 1992Assignee: Kao CorporationInventors: Nozomu Nakanishi, Hironobu Otani, Takeshi Hasegawa, Shinichi Watanabe
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Patent number: 5156872Abstract: An apparatus and method for extracting juice from raw juice containing material is disclosed. The apparatus includes a supporting housing, a pair of meshing helical gears (2,3) for crushing the raw juice containing material to initially extract juice therefrom and with each helical gear terminating in a tapered screw. A sieve (4) is operatively positioned around the helical gears and each of the tapered screws with the sieve being branched (47,48) with each branch housing at least a portion of one of the tapered screws, respectively. Each branch of the sieve has a terminal end with a discharge outlet formed thereat to enable each of the screws to further extract juice from the crushed raw juice containing material by compressingly moving the crushed juice containing material along one of the branch portions of the sieve and toward one of the discharge outlets formed in the sieve.Type: GrantFiled: January 29, 1992Date of Patent: October 20, 1992Inventor: Moon H. Lee
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Patent number: 5137368Abstract: A viscous fluid pumping system having a pair of opposing gears (130, 132) is provided in a housing (32) disposed above an inlet port (73) in a follower plate (70). The follower plate (70) is dimensioned to sealingly fit in a container or drum (D) filled with highly-viscous fluid. In operation, the gears generate a vacuum between the follower plate (70) and the viscous fluid, allowing atmospheric pressure to press the follower plate into the viscous fluid. This, in turn, forces the fluid through the inlet port (73) and into the gears (130, 132). The gears exert high shear forces and localized heating to the fluid, decreasing its viscosity. The fluid exits the system through an outlet in the gear housing. The pumping system may use two such pumps working in conjunction or incorporate a single such pump with a valve structure for recycling fluid through itself.Type: GrantFiled: July 18, 1990Date of Patent: August 11, 1992Assignee: Specified Equipment Systems Co., Inc.Inventor: Kenneth J. Kistner
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Patent number: 5078505Abstract: The invention relates to a method for mixing liquids into each other or different phases into liquid by employing a double loop circulation, created below the surface zone of a reactor. In order to maintain an intensive mixing, it is characteristic of this Bottom Toroidal Roll or BTR principle that the employed mixer has a strong bottom draft and presses obliquely downward, and that the mixer is installed according to the mixing method of this invention and that the flow pattern thereof is controlled in an exactly determined fashion. In our method the mixer jet hits the cylinder surface of the reactor, so that the jet is divided into two roughly equal parts by adjusting this distribution by means of a back-flow guiding member of the invention, which guiding member is located above the mixer. The rolling motion taking place in the reactor is controlled by means of specific baffles.Type: GrantFiled: July 13, 1989Date of Patent: January 7, 1992Assignee: Outokumpu OyInventors: Bror G. Nyman, Seppo S. Jounel, Launo L. Lilja, Valto J. Makitalo
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Patent number: 5005982Abstract: A material processor for processing materials to improve their rheological and material properties includes a housing defining a process chamber and having an inlet for introducing materials therein and an outlet for discharging materials therefrom. Intermeshing gears are rotatably positioned in the process chamber and define an area of intermesh which is positioned in the flow path between the inlet and the outlet of the process chamber. A power source is provided for rotating one or both of the intermeshing gears. The mesh between the gears is such that during rotation, a clearance exists therebetween permitting a path between the gears such that material may flow from the discharge side to the inlet side of the gears through the intermesh and be subjected to extreme pressures, localized heating, shear and cavitation effects resulting in the processing of the materials.Type: GrantFiled: June 21, 1989Date of Patent: April 9, 1991Inventor: Kenneth J. Kistner
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Patent number: 4997359Abstract: An apparatus for coating molds to make hard gelatin capsules has a dish for holding a bath of liquid gelatin. A multi-well tray is submerged in the bath to establish a plurality of fluid passageways through the bath and to create a pool of liquid gelatin in each of the wells. A drive unit, having a pair of counterrotating gears, moves gelatin through the passageways and pools to maintain a substantially uniform gelatin temperature throughout the bath. Capsule molds are periodically submerged into the pools and then withdrawn to manufacture the hard gelatin capsules.Type: GrantFiled: July 17, 1989Date of Patent: March 5, 1991Assignee: Warner-Lambert CompanyInventor: Jean C. Lebrun
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Patent number: 4790454Abstract: This invention relates to a self-contained, portable apparatus for admixing a plurality of liquids. The liquids, generally a diluent (such as water or an organic solvent), together with dilutable liquid chemical concentrates such as pesticides, fertilizers, and the like, are automatically proportioned and blended together to produce a resultant mixture, with controlled dispensing of the resultant mixture. The apparatus, which may be hand carried, is preferably powered by a battery source that is operatively connected to a positive-displacement pump. Such positive-displacement pump draws the liquids into the pump, utilizing the pump vacuum force, mixes the liquids in the pump chamber or housing, and thereafter discharges the resultant mixture from the apparatus, utilizing a suitable dispensing device.Type: GrantFiled: July 17, 1987Date of Patent: December 13, 1988Assignee: S. C. Johnson & Son, Inc.Inventors: Richard J. Clark, Stephen R. Horvath, Jr.
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Patent number: 4338274Abstract: A stream of homogenized plastics material is divided into stream parts 10, 11 and 12 and additive introduced to the external surface of at least one stream part 10, 12 either at or before a gear pump 1. Subsequent passage through the pump 1 mixes the additive in before the stream parts 10, 11 and 12 are recombined downstream of the pump. Stream parts 10, 11 and 12 may be separated by partition on approach to the pump gear and also by partitions 8 and 9 in the pump 1 itself.Type: GrantFiled: October 10, 1980Date of Patent: July 6, 1982Assignee: General Engineering Radcliffe 1979 LimitedInventor: Alan H. Hill
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Patent number: 4264214Abstract: A gas/liquid mixer in which intermeshing gears are caused to rotate and establish mixing, by pressure of the fluids being mixed. The gears are mounted for rotation in a gear chamber and interengage in a meshing zone of the chamber. A gas is introduced into the chamber through a gas inlet which is adjacent to one end of the meshing zone. A liquid inlet enters the chamber between the gas inlet and an outlet which is positioned adjacent a second or opposite end of the mixing zone. The gears are rotated in the chamber by the introduction and expansion of the gas and liquid in the spaces between the gear teeth. Flow regulating means controls the gas/liquid ratio. The apparatus is useful, among other purposes, for mixing a soluble gas with molten hot melt adhesive, directly adjacent the nozzle of a dispenser for preparing a hot melt foam.Type: GrantFiled: June 9, 1978Date of Patent: April 28, 1981Assignee: Nordson CorporationInventors: Charles H. Scholl, Larry Akers
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Patent number: 4193745Abstract: A gear pump for dispersing a gas into a liquid is provided with mixing means for improving the uniformity of the dispersion. In preferred form, the mixing means comprises a series of fixed, shallow, blind cavities that open to the pumping cavity between the liquid inlet and the outlet, and which are positioned to be "wiped" by the gear teeth as the gears rotate. The alternate connection and disconnection of the intertooth spaces to these cavities as the gears rotate establishes motion or turbulence of the gas/liquid mixture within the intertooth spaces, and surprisingly improves uniformity of the dispersion.Type: GrantFiled: March 9, 1978Date of Patent: March 18, 1980Assignee: Nordson CorporationInventors: William M. Hamilton, Charles H. Scholl, Jeffrey J. Kruke, Larry D. Akers
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Patent number: 4093407Abstract: A gear pump is modified by the incorporation of a hollow rod means to permit a liquid additive to be injected into the gear pump at the point at which the gear wheels separate. At this point the pressure is at or below atmospheric pressure and, as a result, the additive can be added uniformly and independently of the pumped liquid flow and pressure.Type: GrantFiled: December 10, 1976Date of Patent: June 6, 1978Assignee: Imperial Chemical Industries Inc.Inventor: David Roy Miles