With Means To Gather Excess Or Rejected Stock Material Patents (Class 425/215)
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Patent number: 6390798Abstract: In order to eject resin leaked from an injection chamber (13) toward the shaft side of an injection plunger (31) away from an injection cylinder (30), a plunger-type injection molding machine injection device is equipped with an ejection guide (151, 251) at the rear edge of an injection cylinder which is thermally isolated from the injection cylinder main body. A band heater (53), which heats the ejection guide, is controlled independently of the band heater (38) which heats the injection cylinder. One embodiment of this injection guide (151) causes the ejected resin to fall from the ejection opening (151h) while retaining its molten state. In another embodiment, the ejection guide (251) has ejection channels (251f) which cause the resin to harden and be ejected in a fine strand state.Type: GrantFiled: November 30, 1999Date of Patent: May 21, 2002Assignee: Sodick Co., Ltd.Inventor: Misao Fujikawa
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Publication number: 20020055008Abstract: A visual effect, such as a granite-look, is produced in a thermoplastic product by directly applying a sufficient amount of at least one color-containing thermoplastic resin system to the surface of an extruded sheet of a thermoplastic resin. The color-containing thermoplastic resin system is applied onto the extruded sheet after it emerges from the die and prior to it entering the rollstack.Type: ApplicationFiled: October 29, 2001Publication date: May 9, 2002Applicant: BASF CorporationInventors: James H. Bennett, Steve Wasson, Gary Kogowski
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Patent number: 6379137Abstract: The invention relates to a device for feeding molten plastic extrudates which emerge from dies to a discharge channel having a cooling water inlet which follows the dies, in which device the dies are arranged in at least two rows, in such a manner that in the discharge direction strands from one row and the other row are guided alternately, next to and at a distance from one another, in which device two collection channels, which are arranged one above the other, are interposed between the dies and the discharge channel, in such a manner that the extrudates emerging from one row of dies are in each case fed to the discharge channel as a group via a collection channel, the individual extrudates of the two groups meeting one another in an intermeshing position alternately and next to one another on the discharge channel and being guided onward by the latter.Type: GrantFiled: July 18, 2001Date of Patent: April 30, 2002Assignee: Rieter Automatic GmbHInventor: Andreas Ecker
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Patent number: 6375874Abstract: A printer forms three-dimensional objects from a powder by selectively applying a binder liquid to incremental layers of the powder. The binder binds layers of the powder into solid two-dimensional cross sections of the desired object provided from memory. The printer can use dithering and halftoning techniques to shade the object and can also print in color. A filtration system removes airborne powder and recirculates the clean air. The printer also includes additional features to manage excess and airborne powder.Type: GrantFiled: October 13, 1999Date of Patent: April 23, 2002Assignee: Z CorporationInventors: David B. Russell, Timothy Anderson, James F. Bredt, Michael J. Vogel, Walter J. Bornhorst
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Patent number: 6368096Abstract: Apparatus and method for removing unwanted excess material from a mold section is particularly adapted for removing a monomer ring adhered within a reservoir of a female mold section used to mold a contact lens. The invention involves piercing the monomer ring and rotating the piercing members (e.g., annularly spaced pins) relative to the mold section whereby the monomer ring is sheared from the mold section to which it was adhered while the molded lens is left intact in the mold section.Type: GrantFiled: July 31, 2000Date of Patent: April 9, 2002Assignee: Bausch & Lomb IncorporatedInventors: Michael H. Dobner, Craig A. Barrile-Josephson
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Patent number: 6338903Abstract: A semiconductor encapsulating resin composition which is powdery particles of a resin composition comprising an epoxy resin, a curing agent and an inorganic filler, and produced through a series of unit operations inclusive of melt-kneading and pulverization of a raw material mixture, wherein foreign metal having magnetic property originating from metal materials constituting production apparatuses used in the unit operations and contained in the powdery particles are selectively recovered and removed by a drum type metal classification-recovering apparatus. This semiconductor encapsulating resin composition provides a high reliability semiconductor device not containing magnetic foreign metal.Type: GrantFiled: June 29, 2000Date of Patent: January 15, 2002Assignee: Fujitsu LimitedInventors: Yukio Takigawa, Ei Yano
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Publication number: 20020001634Abstract: A molding tool capable of forming a molding with a cylindrical core while ensuring the discharge of the air in the vicinity of an upper end portion and forming no end face burr. As the means for this molding tool, an upper mold 10 and a lower mold 20, as can be clamped, are provided with insert dies 12 and 22 having fitting hole portions 14 and 24 at their centers. The lower fitting hole portion 24 is provided with a support pin 25 to be fitted in the cylindrical core 1 thereby to retain the cylindrical core 1, and the upper fitting hole portion 14 is provided with a core holder 15 so that a cavity 30 is formed around the outer circumference of the cylindrical core 1 when in the clamped state, to charge the cavity with a molding material to be shaped. A seal ring 16 is mounted in the fitting hole portion 14 of the upper insert die 12 to fit the outer circumference of the upper end portion of the cylindrical core 1 while holding a slight air ventilation.Type: ApplicationFiled: January 4, 2001Publication date: January 3, 2002Inventors: Toshio Komazawa, Yoshikazu Tsujimoto
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Publication number: 20010045678Abstract: To replenish a powder supply section (40) with a powder material, a powder-material reservoir (30) is mounted in a reservoir placement section (43) located on the upper side of the powder supply section (40). After the completion of a modeling operation on a modeling stage (62) in a modeling mechanism (60), the modeling stage (62) is lowered and a carrier mechanism (65) operates to carry a mesh tray (9) and a three-dimensional (3D) object (91) on the modeling stage (62) to a treatment chamber (72). In the treatment chamber (72), removal of unbound powder adhering to the 3D object (91) and post-processing are performed automatically. Such a configuration allows automatic fabrication of a 3D object of high binding strength without scattering the powder material therearound.Type: ApplicationFiled: May 21, 2001Publication date: November 29, 2001Applicant: Minolta Co., Ltd.Inventors: Naoki Kubo, Shigeaki Tochimoto
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Patent number: 6315540Abstract: A molding die used for concurrently packaging semiconductor chips in a large piece of synthetic resin has a cavity rectangular in cross section and having two long peripheral lines and two short peripheral lines for accommodating a circuit panel where the semiconductor chips are mounted, melted synthetic resin is supplied through a gate extending along one of the long peripheral lines to the cavity so that the melted synthetic resin smoothly flows over the cavity, and the smooth flow prevents the molded product from voids and a wire weep.Type: GrantFiled: October 6, 2000Date of Patent: November 13, 2001Assignee: NEC CorporationInventor: Hisayuki Tsuruta
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Patent number: 6196826Abstract: A seepage system for an injection molding apparatus includes a manifold plate with a first portion and a second portion abutting the first portion, and a seepage passage positioned between the first and second portions. The second portion may have at least a portion of a melt passage, and the seepage passage may have an outlet. The seepage system also has one or more seepage channels, with each seepage channel being connected to and in communication with the seepage passage. Moreover, the seepage system includes one or more seepage bores for receiving the flow of excess material, with each seepage bore being connected to and in communication with one of the seepage channels. Gravity is used to assist the flow of excess material from the one or more seepage bores through the seepage channels and the seepage passage.Type: GrantFiled: May 28, 1999Date of Patent: March 6, 2001Assignee: Mold-Masters LimitedInventors: Jobst U. Gellert, Denis L. Babin, Helen Qun Zhuang
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Patent number: 6164948Abstract: A die system for the extrusion of polymer permits external cleaning and maintenance without shutting down the operation. Removable die inserts are located on one or both sides of the die opening section through which polymer is extruded. The inserts are spaced from the die opening section, by a very small distance, so as to avoid interfering with the opening section. When molten polymer accumulates and burns in areas surrounding the die opening section, the inserts can be removed and replaced without interrupting the extrusion of polymer.Type: GrantFiled: May 8, 1998Date of Patent: December 26, 2000Assignee: Kimberly-Clark Worldwide, Inc.Inventor: Michael Charles Cook
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Patent number: 6095787Abstract: A method and apparatus for forming a skid-resistant surface on a thermoformed object such as a bed liner. The method includes forming a blank of extruded plastic material, abrading the surface with a wire brush, reheating the blank and thermoforming the blank to open the abraded surface of the blank. The apparatus includes an extruder delivery mechanism delivering a blank of sheet material to a wire brush which is turned by an electric motor at a speed slightly greater and in the same direction as the travel of the blank under the roller.Type: GrantFiled: October 19, 1998Date of Patent: August 1, 2000Assignee: The Colonel's, Inc.Inventor: Dennis B. Bills, Sr.
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Patent number: 6033201Abstract: A method of producing a composite insulator having a sheath and shed portions molded around a core rod, grasping metal fittings engagingly fitted and fixed at both end portions of the core rod, the sheath covering the core rod between the grasping metal fittings on the whole circumference of the core rod, and a plurality of shed portions extruding radially outwardly from the sheath at plural positions spaced from each other in the longitudinal direction of the core rod, by filling an insulative high molecular material and subsequent vulcanization thereof in the cavity of molding die portions. The methods includes positioning and retaining the core rod at a desired position in the cavity of the molding die portions by means of retaining rings engagingly fitted on the grasping metal fittings and allowing an excess portion of the insulative high molecular material filled in the cavity to flow out to the exterior of the cavity between the grasping metal fittings and the retaining rings.Type: GrantFiled: May 21, 1998Date of Patent: March 7, 2000Assignee: NGK Insulators, Ltd.Inventor: Hiroshi Kashiwagi
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Patent number: 6007318Abstract: A printer forms three-dimensional objects from a powder by selectively applying a binder liquid to incremental layers of the powder. The binder binds layers of the powder into solid two-dimensional cross sections of the desired object provided from memory. The printer can use dithering and halftoning techniques to shade the object and can also print in color. A filtration system removes airborne powder and recirculates the clean air. The printer also includes additional features to manage excess and airborne powder.Type: GrantFiled: December 20, 1996Date of Patent: December 28, 1999Assignee: Z CorporationInventors: David B. Russell, Timothy Anderson, James F. Bredt, Michael J. Vogel, Martin Seymour, Walter J. Bornhorst, Marina I. Hatsopoulos
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Patent number: 5975875Abstract: Designs for basecurves are disclosed which are designed to promote adhesion of an excess polymer HEMA ring to the basecurve during a demolding operation such that the excess polymer HEMA ring is removed along with the basecurve during the demolding operation. The basecurve mold designs promote and maintain adhesion of an excess polymer HEMA ring to the basecurve in a process for molding cast contact lenses in mold assemblies, each comprising a frontcurve and a spaced basecurve, and wherein a molded lens is formed therebetween. In an embodiment of the invention, the annular area of the basecurve mold can be formed with an annular step which includes projecting teeth positioned therearound which project into the excess polymer HEMA ring.Type: GrantFiled: March 9, 1998Date of Patent: November 2, 1999Assignee: Johnson & Johnson Vision Products, Inc.Inventors: Carl Crowe, Jr., Victor Lust, Stephen C. Pegram, Robert Phillips, Sanjay Rastogi, Kornelis Renkema, Craig W. Walker
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Patent number: 5972255Abstract: An injection stretch blow molding apparatus has a preform molding section for molding preforms and a blow molding section for blow molding containers from the preforms retaining heat from when the preforms were injection molded. At a location in a path along which the preforms are carried from the preform molding section to the blow molding section there is a discharge guide section for guiding preforms which are not to be carried to the blow molding section off the carrying path.Type: GrantFiled: March 31, 1998Date of Patent: October 26, 1999Assignee: Nissel ASB Machine Co., Ltd.Inventors: Minoru Takada, Koichi Sato, Kazuyuki Yokobayashi, Shuichi Ogihara
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Patent number: 5958467Abstract: A exit chute for a pharmaceutical tablet press machine comprising a first exit chute portion having a first end and a second end wherein the first end is adapted to be secured to the tablet press for receiving tablets formed thereby. A second exit chute portion is provided that has a first end and a second end and the first end is adapted to be removably secured to the second end of the first exit chute portion to form an extended tablet pathway, and the second chute portion includes an aperture therein whereby rejected tablets can be diverted to pass therethrough and accepted tablets will be allowed to pass through the second exit chute portion and out of the second end thereof.Type: GrantFiled: February 12, 1997Date of Patent: September 28, 1999Assignee: Glaxo Wellcome Inc.Inventors: Herbert Dale Coble, Robin Cary Maples, Ross Vincent Martin, Jr.
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Patent number: 5932162Abstract: A powdered slush molding device has debris capturing devices in its reservoir. A resin material is passed back and forth through openings between the reservoir and the mold by rotating the apparatus back and forth until a film of desired thickness is formed on the mold. The capturing devices capture the debris formed during a molding process. Unwanted debris are then removed from the capturing devices either while the capturing devices remain within the reservoir or by removing them and removing the debris outside the reservoir.Type: GrantFiled: November 19, 1997Date of Patent: August 3, 1999Assignee: Kansei CorporationInventor: Masahiro Johno
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Patent number: 5882698Abstract: Collimated white light is transmitted through a transparent lens mold having a molded lens resting on a curved surface thereof. A telecentric lens and a camera having a digital output are used to view the illuminated lens to obtain pixel image data of the lens. The pixel image data is analyzed by a computer to detect deformities in the molded lens.Type: GrantFiled: August 21, 1996Date of Patent: March 16, 1999Assignee: CIBA Geigy CorporationInventors: Kai C. Su, Jack C. White, Mushir Siddiqui
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Patent number: 5863564Abstract: A molten strand feeding device having a strand cutting apparatus. In the device, a movable unit is placed at the upper end of a cooling trough so that it is movable linearly in a direction parallel to the nozzle surface thus improving the strand cutting effect at the very beginning of the molten strand emerging from nozzles. The cooling trough is coupled to a hinged joint at the rear center and is selectively rotatable relative to the nozzle surface so that the device is selectively changed between the horizontal and vertical types. A spring-biased strand cutting apparatus is provided at the upper end of the movable unit so that the cutting apparatus is brought into close contact with the nozzle surface and smoothly moves on the nozzle surface without giving an impact on the nozzle surface, thus improving the strand cutting effect.Type: GrantFiled: May 8, 1997Date of Patent: January 26, 1999Assignee: Han Jin Ind. Co., Ltd.Inventor: Young Sool Yoon
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Patent number: 5811049Abstract: A method of producing a composite insulator having a sheath and shed portions molded around a core rod, grasping metal fittings engagingly fitted and fixed at both end portions of the core rod, the sheath covering the core rod between the grasping metal fittings on the whole circumference of the core rod, and a plurality of shed portions extruding radially outwardly from the sheath at plural positions spaced from each other in the longitudinal direction of the core rod, by filling an insulative high molecular material and subsequent vulcanization thereof in the cavity of molding die portions. The method includes positioning and retaining the core rod at a desired position in the cavity of the molding die portions by means of retaining rings engagingly fitted on the grasping metal fittings and allowing an excess portion of the insulative high molecular material filled in the cavity to flow out to the exterior of the cavity between the grasping metal fittings and the retaining rings.Type: GrantFiled: March 7, 1997Date of Patent: September 22, 1998Assignee: NGK Insulators, Ltd.Inventor: Hiroshi Kashiwagi
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Patent number: 5798129Abstract: The present invention is directed to a resilient and self-locking mold for the prototype molding of an object using a liquid resin, the mold comprising first and second mold portions matable to form a mold of the object, the first mold portion having a first opposing mold face with a cavity therein corresponding to the size and shape of the object to be molded, the second mold portion having a second opposing mold face with a core thereon corresponding to the back of the object to be molded, the opposing mold faces of the first mold portion and the second mold portion, upon mating, defining a void therebetween, the void corresponding in size, shape and thickness, to the object to be molded, the void further having a first orifice for providing resin therein, a second orifice for removing air therefrom, the first mold portion and second mold portion further having opposing members of a resilient interlocking pair on the opposing mold faces, the interlocking pair members when interlocked, providing a resilientType: GrantFiled: August 31, 1995Date of Patent: August 25, 1998Inventor: Bruce A. Megleo
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Patent number: 5783222Abstract: A dough molder including a stainless steel case, a sheeter, a former, a compressor, and a removable cleaning tray. The sheeter includes a fixed roller, adjustable roller, and a scraper for each roller, where the gap between the rollers is adjustable. The dough from the sheeter is directed to a conveyor belt that moves the dough to the former, a reticulated surface, such as a chain link screen, flexible in the direction of belt movement, that forms the dough into a roll. The belt directs the rolled dough from the former to the compressor that compresses the rolled dough into a cylindrical shape. The cleaning tray is located between the upper and lower legs of the belt, accumulating bits of flour and dough. The tray is removable for emptying.Type: GrantFiled: October 25, 1996Date of Patent: July 21, 1998Assignee: Somerset Industries, Inc.Inventors: Andrew D. Voyatzakis, George Athanasiadis
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Patent number: 5723153Abstract: An apparatus for extruding a mass onto a moving support mechanism. A first cylinder for receiving the mass within its interior has an exit channel through which the mass is forced. A second cylinder is disposed about the first cylinder for relative rotation with respect to the first cylinder. The second cylinder includes a plurality of forming channels which repeatedly aligned with the exit channel of the first cylinder during relative rotation of the cylinders and through which the mass is forced. A plurality of nozzles are formed in the outer surface of the second cylinder and are shaped and arranged for guiding the excess mass away from the exit ends of the forming channels during at least a portion of the rotational movement of said second cylinder and for guiding the excess mass into the extruded mass at the extruding position of the apparatus.Type: GrantFiled: February 20, 1996Date of Patent: March 3, 1998Assignee: Berndorf Belt Systems, Inc.Inventor: Jules Schwager
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Patent number: 5695708Abstract: Three-dimensional modeling method and apparatus for receiving information with respect to a three-dimensional object to be formed and for forming a three-dimensional physical object through the use of two building materials and a third filling material. The first building material is typically a photopolymer. The second building material has at least one of the following characteristics: elastomeric properties, engineering plastic thermoset properties, is suitable for lost wax casting, is impregnated with metallic materials, is impregnated with ceramic material, or is sinterable. The filling material is typically a support material to provide structural support to the model during building.Type: GrantFiled: December 22, 1995Date of Patent: December 9, 1997Assignee: Cubital Ltd.Inventors: Michael Karp, Herbert Meningher, Yehuda Baron
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Patent number: 5591458Abstract: A mechanism for making granulated material from a viscous substance includes a vessel charged with the substance and having a discharge opening arrangement for discharging the substance onto a cooling surface. A belt travels across the vessel, the belt having openings arranged to periodically come into alignment with the discharge opening arrangement to allow the substance to fall onto the cooling surface. The discharge opening arrangement comprises a plurality of rows of discharge openings. Each row extends transversely of the longitudinal direction of belt travel, and the rows are spaced apart in that longitudinal direction. The vessel openings of each row are offset in the transverse direction with respect to the vessel openings of other rows. A collection arrangement collects residual substance falling from the belt and returns the substance onto the belt at a location upstream of the vessel.Type: GrantFiled: July 24, 1995Date of Patent: January 7, 1997Assignee: Santrade Ltd.Inventors: Reinhard Froeschke, Axel Konig
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Patent number: 5567446Abstract: A slip supply system for supplying slip to one or more casting molds includes a slip supply pipe 2 to which the base ends of pouring hoses 3 each having a pouring valve 4 are connected. The ends of the pouring hoses 3 are detachably connected to casting molds 1. A slip discharge pipe 20 having communicating holes 22 is laid in the vicinity of the slip supply pipe 2. The ends of the pouring hoses 3 are removed from the casting molds 1 and connected to the communicating ports 22 before supplying slip to the casting molds 1. Slip is fed in this condition, so that the solid matters attached to the interior of the slip supply pipe 2 and the interiors of the pouring hoses 3 are washed away to the slip discharge pipe 20. Thereafter, the ends of the pouring hoses 3 are connected to the casting molds 1 to feed slip to the casting molds 1.Type: GrantFiled: June 1, 1995Date of Patent: October 22, 1996Assignee: Toto Ltd.Inventors: Takeo Enomoto, Toshiya Abe, Hironobu Murakami, Shinichi Hiraki
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Patent number: 5556649Abstract: A device for removing runners from intermediate molded products includes a holding assembly for maintaining the products in a desired position, a hammer member, an assembly for vibrating the hammer member to cause repeated striking of the intermediate product so as to separate runner and product portions thereof and a control arrangement for selectively activating and deactivating the vibrating assembly. The control arrangement provides for positioning the vibrating assembly in at least one predetermined position upon deactivation thereof so as to enable the vibrating assembly to be readily restarted. The holding assembly can incorporate a robot arm for transporting and positioning the intermediate molded product for runner removal. In order to protect the robot arm from the effects of vibrational forces, the intermediate molded product is adapted to be resiliently attached to the robot arm.Type: GrantFiled: August 30, 1993Date of Patent: September 17, 1996Assignee: Yamaha Motor Co., Ltd.Inventors: Kouichi Sumioka, Motohiro Haji, Toshiiku Suzuki, Masao Sonobe, Noriyuki Naitoh
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Patent number: 5540576Abstract: An apparatus having a vacuum chamber or chamber, wherein the changing manner of the mold can be improved, the sealing structure of the vacuum chamber or an injection nozzle is simple, and the cost of the apparatus is reduced and preservation of the apparatus is improved. The apparatus has a vacuum chamber for surrounding a mold into an airtight situation. The vacuum chamber includes an upper casing and a lower casing, and they are being divided by a parting line defined by mating peripheral edge surfaces which incline upwardly from an operator-side to an opposite-side. An O-ring as a sealing member of the vacuum chamber is positioned between the peripheral edge surfaces.Type: GrantFiled: February 24, 1994Date of Patent: July 30, 1996Assignee: Toyoda Gosei Co., Ltd.Inventors: Yukio Kawakita, Shogo Sugiyama, Kazuhiko Suzuki
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Patent number: 5484278Abstract: A vent valve for a gas assisted injection molding machine has a valve member to control flow from the mold cavity. A shear co-operates with an anvil in the passageway between the mold and valve member to sever material in the passageway as the molded article is ejected.Type: GrantFiled: February 14, 1994Date of Patent: January 16, 1996Assignee: Pebra GmbH Paul BraunInventor: Karl Berdan
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Patent number: 5474863Abstract: The sealed lead acid battery comprises a positive and/or negative electrode made of an active material added with porous polymer particles having an average pore diameter of 0.05 to 10 .mu.m and a particle size of 0.1 to 0.8 mm. The additive amount of the porous polymer particles ranges from 0.2 to 3 wt. %. The active material may be incorporated with porous particles of 0.3 to 5 wt. % previously impregnated therein with sulfric acid. The resultant sealed lead acid battery has a high energy density and is superior in a high efficient discharge characteristic, a cycle life characteristic and a low temperature characteristic.Type: GrantFiled: December 23, 1993Date of Patent: December 12, 1995Assignee: Matsushita Electric Industrial Co., Ltd.Inventor: Osamu Yamamoto
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Patent number: 5439634Abstract: A method and apparatus for separating an injection molded product from a sprue/runner formed with the injection molded product in injection molds includes a product receiver underlying the injection molds for receiving the product after the molds have been opened and a sprue/runner receiver underlying the injection molds for receiving the sprue/runners after the molds have been opened. The product receiver and the sprue/runner receiver are positioned relative to the molds and relative to each other such that the product falls onto the product receiver while being precluded from falling into the sprue/runner receiver and the sprue/runners fall into the sprue/runner receiver while being precluded from falling onto the product receiver.Type: GrantFiled: December 8, 1993Date of Patent: August 8, 1995Assignee: AT&T Corp.Inventor: Robert R. North
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Patent number: 5435943Abstract: A method and apparatus for making an ophthalmic lens pumps monomer into one end of a gas permeable tube along its interior length while a chamber surrounding the gas permeable tube is maintained at a subatmospheric pressure by means of a vacuum pump. Preferably, the gas permeable tube is made of silicon rubber. Static mixers introduce mixing into the flow of the monomer within the tube in order to expose the bulk of the monomer to the gas permeable walls of the tube. Under such conditions in the gas permeable tube, the majority of the dissolved gasses are removed from the monomer and continue to be drawn out of the chamber by the pump connected to the chamber. The degassed monomer is then transferred into a mold where it is polymerized into an ophthalmic lens.Type: GrantFiled: March 11, 1994Date of Patent: July 25, 1995Assignee: Johnson & Johnson Vision Products, Inc.Inventors: Jonathan P. Adams, John B. Enns
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Patent number: 5374175Abstract: An apparatus in which toner fines are recovered from a recirculating liquid transporting toner pellets cut from extruded toner. The recirculating liquid cleans the pellet cutter and forms a mixture of liquid and toner fines. The recovery unit is positioned between the pellet cutter and a station discharging the pellets. In this way, clean liquid flows into the pellet cutter during each cycle. The recovery unit has a housing defining a chamber having two sections. A sloping screen is located in the chamber covering one of the chamber sections. The mixture of toner fines and liquid is dispensed onto the screen. The liquid passes through the screen and is recirculated. Toner fines collect on the screen. A backwash system washes the toner fines from the screen into the other section of the chamber. The mixture of toner fines and liquid is pumped from the other chamber section into a separator. The toner fines are separated from the liquid and re-used in the extruder.Type: GrantFiled: July 23, 1991Date of Patent: December 20, 1994Assignee: Xerox CorporationInventors: Michael J. Bortfeldt, John R. Farkas, Jeffery Q. Hammond, Thomas W. O'Connor, Valentin Sukhenko, Mit G. Turakhia
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Patent number: 5304050Abstract: A machine for molding bonded plastics material, in particular expanded or foamable polystyrene in combination with rigid sheet polystyrene, wherein the rigid material (2) is preformed in a preforming station (1) in a preforming mold (33, 36) while simultaneously separating by a cutter (40) the preformed portion from the rigid sheet of starting material to produce separate preformed pieces, the preformed pieces are moved by a transfer table (27) to a molding station (3) while retained on preforming half-mold (33), foamable material (44) is fed to molding mold (41) and molded and bonded on the preformed pieces with sintering by pulse action of steam (45) and, the final molded articles (P) are discharged at discharge station (6). The half-mold (33) is moved alternately between the preforming station (1) and molding station (3), and cooperates with respective counter-molds (36, 41). The scrap is recovered without being involved in the molding stage.Type: GrantFiled: April 30, 1992Date of Patent: April 19, 1994Assignee: Devi S.p.A.Inventor: Mario Vismara
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Patent number: 5268132Abstract: Process and device for drawing off and blocking off a melt, especially of plastic material, with a heatable melter (1) fitted with a blocking valve (3) acting as a melt distributor from which the melt flows into a nozzle plate (10) which divides the melt by means of nozzles (14) into a plurality of threads, whereby the temperature of the melter and nozzle plate is regulated separately and the blocking valve is closed to block the melt off and the nozzle plate is tightly closed off by a cover (18). To draw off the melt with the blocking valve open, the temperature of the melter and the nozzle plate is kept substantially at the same level and to block off the melt with the blocking valve closed the nozzle plate is taken to a temperature just above the solidification temperature of the melt material.Type: GrantFiled: August 14, 1992Date of Patent: December 7, 1993Assignee: Automatik Apparate-Maschinenbau GmbHInventors: Jurgen Keilert, Alfred Nogossek, Harald Zang
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Patent number: 5242291Abstract: A confection molding machine provides for continuous, multiple cavity molding and unmolding of confection figures which may be of differing configuration and mass. The mold device utilizes a self-closing and opening mold in conjunction with dedicated, independent injection nozzles and confection pumps. Two outwardly facing mold halves are carried on an independent mold assembly, and corresponding mold halves abut one another just before filling and again after unmolding the finished confection figure. An endless conveyor, preferably a pair of spaced transfer chains, carries the mold assemblies and the mold halves are clamped together when passing over an unsupported section of the endless conveyor.Type: GrantFiled: November 1, 1991Date of Patent: September 7, 1993Inventor: John Farmakis
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Patent number: 5186959Abstract: A pellet making machine used in a pellet producing process has a rotary cutter mounted to the outer periphery of a hollow rotary shaft. A fixed blade is disposed opposite to the rotary cutter, and a pellet exhaust chute is disposed below the rotary cutter and slopes downwardly therefrom. The rotary cutter is provided with an interior cooling chamber and the hollow rotary shaft is provided with water inflow holes and exhaust holes communicating with the cooling chamber of the rotary cutter. A water supply tube extends into the hollow rotary shaft and is supported within the shaft by a partition wall, which also forms a water supply passage communicating with the water inflow holes of the hollow rotary shaft and a water exhaust passage communicating with the water exhaust holes of the hollow rotary shaft.Type: GrantFiled: January 8, 1992Date of Patent: February 16, 1993Assignee: Katsu Manufacturing Co., Ltd.Inventor: Masaru Tanaka
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Patent number: 5173241Abstract: In the injection molding of a hollow shaped article by the injection of not only molten synthetic resin but also compressed gas into a die, a method is provided by this invention which effects the supply of the compressed gas with a multistage compressor and the injected compressed gas is recovered in a recovery container connected to the suction side of the multistage compressor. For the injection molding of a hollow shaped article by the injection of not only molten synthetic resin but also compressed gas into a die, an apparatus is provided by this invention which has a gas nozzle for injecting the compressed gas into the die connected through a first switching valve to the discharge side of the multistage compressor and, at the same time, has the gas nozzle connected through a second switching valve to a recovery container connected to the suction side of the multistage compressor.Type: GrantFiled: May 24, 1990Date of Patent: December 22, 1992Assignee: Asahi Kasei Kogoyo Kabushiki KaishaInventors: Takehiro Shibuya, Yasuyoshi Ishihara, Susumu Imai
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Patent number: 5162119Abstract: The present invention provides apparatus for making printed foods such as cookies, crackers, and snacks at high production speeds on a continuous basis. The apparatus includes a rotary printer which is synchronized with dough forming apparatus such as a rotary cutter or rotary molder.Type: GrantFiled: April 9, 1991Date of Patent: November 10, 1992Assignee: Nabisco, Inc.Inventors: Chris Pappas, Daniel A. Koppa, Roger E. Skeels, Agostino Aquino
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Patent number: 5139602Abstract: There is provided an apparatus for producing a paving block comprising a block substrate and a solid top layer selected from a tile-like layer and a cured cement mortar layer firmly bonded onto the upper surface of the block substrate. The apparatus comprises a mortar applicator (21) consisting essentially of a mortar container and a masking bottom board (23) having an opening (24) to be located on the back of a top layer (1-2) or the upper surface of a block substrate (1-1) during application of cement mortar thereon, a clamping plate (25) to be located on the top layer (1-2) placed on the block substrate (1-1) during bonding them, and a scraping frame (26) for scraping excess mortar remaining on the side surfaces of the bonded block. When the apparatus is used to produce a novel paving block comprising a block substrate and a solid top layer having a plane dimension smaller than the substrate, squeeze-out deposits (6) of the cement mortar (7) are further formed around the bonded top layer (1-2).Type: GrantFiled: February 25, 1991Date of Patent: August 18, 1992Assignees: Chichibu Cement Co., Ltd., Inax Corporation, ILB Co., Ltd.Inventors: Shigeo Suda, Osamu Kodama, Takumi Tanikawa, Hideyuki Munakata
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Patent number: 5129588Abstract: An apparatus according to the invention is for treating waste materials of foam resin products having been used mainly as packing or wrapping materials, which is provided with a crushing room furnishing stationary cutting edges and rotatably moving cutting edges at the lower part of a hopper into which the waste foam resin materials are thrown, and at the outside of the crushing room, a cylindrical volume shrinking mechanism which receives the destroyed resin products and send them in succession, heats to soften and fuse them one another, and effecting heat and pressure thereto so as to de-foam and extrude the resin like a hot chewing cake or a hot birdlime. The cylindrical volume shrinking mechanism has an extruding nozzle opening upward, from which the resin is charged into a metal mold cylinder and when this charging amount reaches to a certain level, the operation of the cylindrical volume shrinking mechanism is stopped.Type: GrantFiled: February 11, 1991Date of Patent: July 14, 1992Assignee: Suruga Seiki Co., Ltd.Inventors: Ikeda Toshio, Sugiyama Katsuhiko
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Patent number: 5102323Abstract: A plastic resin extruder to co-extrude a multi-layer melt-laminate film including a multi-port diverter plug which selects the orders of the layers by changing the alignment of the plug channels with different pairs of exit and entrance ports. The walls of the plug and its barrel are tapered and the plug is rotatable about its axis. The plug has interconnected indentations which lie between its surface channels with the indentations leading to a weep hole. Resin which leaks from the channels to the indentations is led out the weep hole so that leakage of resin from one surface to another is prevented.Type: GrantFiled: July 11, 1990Date of Patent: April 7, 1992Assignee: American National Can CompanyInventor: Robert J. Blemberg
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Patent number: 5031567Abstract: Paste-form material is shaped into individual portions by an apparatus wherein a feed pipe provides a continuous supply of paste-form product under pressure to a distributor which is synchronized with a cutting device to produce the individual portions which are delivered to a support. Elements of the cutting device collect drops produced when cutting the distributed paste-form product, and the collected drops are removed from the cutting device such that the drops do not come in contact with the support.Type: GrantFiled: November 20, 1989Date of Patent: July 16, 1991Assignee: Nestec S.A.Inventors: Alain Daouse, Bruno Delande
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Patent number: 5011635Abstract: The present invention contemplates a stereolithographic apparatus and method having a liquid organic phase and a fluid phase separated by a membrane that inhibits contact between the phases.Type: GrantFiled: May 18, 1989Date of Patent: April 30, 1991Assignee: DeSoto, Inc.Inventors: Edward J. Murphy, John J. Krajewski, Robert E. Ansel
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Patent number: 5000895Abstract: A method for preventing hardening of plastic material in a dispenser tip during periods of nonuse of the dispenser tip. The method involves providing a balloon around the dispenser tip, and then filling the balloon with plastic material.Type: GrantFiled: August 8, 1990Date of Patent: March 19, 1991Assignee: Chrysler CorporationInventors: Steven L. Evans, Joseph R. Dolezal
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Patent number: 4982687Abstract: A method and apparatus for coating a magnetic liquid onto a moving substrate to form a magnetic recording medium having an improved product yield and reduced streaking. Coating liquid is fed to an extruder by a second pump, while excess coating liquid is extracted from the extruder and returned to a storage tank with a second pump. When the coating operation is to be stopped, the extruder is bypassed between the first and second pumps and a portion of the output from the first pump is returned directly to the storage tank so that the flow rates through both pumps are the same during coating and idling times.Type: GrantFiled: March 12, 1990Date of Patent: January 8, 1991Assignee: Fuji Photo Film Co., Ltd.Inventors: Shinsuke Takahashi, Norio Shibata, Tsunehiko Sato
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Patent number: 4959186Abstract: In the case of the extruder, the thread of the screw, or that of the screws, is partly left-handed and partly right-handed, so that one part of the material to be processed is conveyed in direction A, while the other part is conveyed in the opposite direction B. The process is a degasifying-extrusion-process and the extruder is a degasifying extruder. The apparatus includes a reverse-degasifying assembly (7,22) at the end (8,19) of the screw (1,16), or screws (1,16), if the material to be processed is carried away from this end, and/or a reverse-degasifying assembly (41,52) at the location between the threaded sections of the screw (1,16) or screws (1,16), so that the material to be processed is carried away in opposite directions B and A.Type: GrantFiled: September 22, 1988Date of Patent: September 25, 1990Assignee: Rhodia AGInventors: Rudiger Dollhopf, Bernd Nandzik
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Patent number: 4901503Abstract: An assembly for the receiving of a plurality of plastic parts initially interconnected to one another by runner structures in an array and formed from a multi-cavity plastic mold such that the subject assembly separates the plastic parts from the runner structure, ejects and delivers the runner structure into a recycling assembly and concurrently but independently delivers each of the plastic parts into separate containers through the provision of a delivery structure associated with the subject assembly.Type: GrantFiled: July 11, 1988Date of Patent: February 20, 1990Assignee: Security Plastics, Inc.Inventors: Enidio A. Gomez, Robert J. Downey
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Patent number: 4882101Abstract: A method of producing a reinforced rubber hose, including the steps of continuously extruding a long plastic mandrel from a plastic material and feeding the extruded plastic mandrel, extruding an unvulcanized inner rubber tube on the long plastic mandrel, forming a tubular reinforcing layer on the unvulcanized inner rubber tube, extruding an unvulcanized outer rubber tube on the tubular reinforcing layer, vulcanizing the unvulcanized rubber tubes, thereby preparing a long rubber hose formed on the long plastic mandrel, cutting the long rubber hose into short rubber hoses having a predetermined length, while concurrently cutting the long plastic mandrel into short plastic mandrels, removing the short plastic mandrels from the short rubber hoses, and crushing the short plastic mandrels into a starting form of the plastic material, and returning the starting form of the plastic material to an extruder for continuously extruding the long plastic mandrel.Type: GrantFiled: May 26, 1988Date of Patent: November 21, 1989Assignee: Tokai Rubber Industries, Ltd.Inventors: Katsuhiko Ohkita, Kazuhiro Ogata, Ken Niwa