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| Number | Title | Issue Date |
| 7850895 | Sprue bar shutoff method A method for connecting and disconnecting an injection molding machine to and from a shutoff assembly includes the steps of mating a nozzle of the injection molding machine to a seat in an exterior wall of a chamber of the shutoff assembly, advancing an elongate ste... | 12/14/2010 |
| 7803306 | Individual cavity shut-off valve for an injection molding apparatus An injection molding apparatus includes a first nozzle having a first nozzle melt channel in fluid communication with a manifold melt channel, and a second nozzle having a second nozzle melt channel in fluid communication with the first nozzle melt channel. A nozzle... | 09/28/2010 |
| 7367797 | Needle valve for filling a mold with an organic material in the liquid state The valve includes: a body in which is formed a flow passage for the material to be molded having a constriction bounded on its upstream side by a change of section forming a seat, and a needle mounted in the body ... | 05/06/2008 |
| 7284979 | Self aligning articulated joint for use in a hot runner system An injection molding self aligning articulated joint configured to be disposed between an injection unit and a hot runner. A joint is provided having first and second spherical surfaces and a melt channel therein. The joint is coupled to one of the injection unit an... | 10/23/2007 |
| 7270537 | Non-coaxial injection molding valve flow control In an injection molding machine having upstream and downstream channels communicating with each other for delivering fluid material to one or more mold cavities, apparatus for controlling delivery of the melt material from the channels to the one or more mold caviti... | 09/18/2007 |
| 7234929 | Injection molding flow control apparatus and method In an injection molding machine having upstream and downstream channels communicating with each other for delivering fluid material to one or more mold cavities, apparatus for controlling delivery of the melt material from the channels to the one or more mold caviti... | 06/26/2007 |
| 7229585 | Molded plastic rod with improved break strength An injection molded plastic rod suitable for use in a battery hydrometer. Stress-relieving formations are provided symmetrically arranged on opposite sides of an injection gate of the rod. The formations distribute injection stresses and shield the gate vestige.... | 06/12/2007 |
| 7168943 | Guided valve pin for an injection molding apparatus An injection molding apparatus comprises a manifold having a manifold channel for receiving a melt stream of moldable material under pressure and delivering the melt stream to a nozzle channel of a nozzle. A mold cavity is in communication with the nozzle channel of... | 01/30/2007 |
| 7156651 | Apparatus for injection molding articles An improved injection molding apparatus having a valve-gated injection nozzle for regulating a flow of molten material through a connecting passageway to a mold cavity. An end portion of the valve stem is configured to cooperate with a complementary sealing portion ... | 01/02/2007 |
| 7122143 | Methods for manufacturing dosage forms Systems, methods and apparatuses for manufacturing dosage forms, and to dosage forms made using such systems, methods and apparatuses are provided. Novel compression, thermal cycle molding, and thermal setting molding modules are disclosed. One or more of such modul... | 10/17/2006 |
| 7047828 | Pipette tip with an internal sleeve and stabilizing projections A pipette tip member has an elongated tubular receptacle including a sidewall with a plurality of stabilizing projections extending from the sidewall for aligning the pipette shaft, and a sidewall with a bifurcated section that includes first, second, and third side... | 05/23/2006 |
| 7040887 | Closable nozzle body A closing element, which has an open position and a closed position and is actuated by an actuating element, is arranged in the nozzle channel of a nozzle body. In the closing position, the closing element separates a region that is at least temporarily in open comm... | 05/09/2006 |
| 7037103 | Apparatus for injection molded articles An improved injection molding apparatus for a mold using a valve-gated nozzle that includes a replaceable insert with a bore for aligning and sealing with the valve stem. The replaceable insert is advantageously provided as a wear component in a gate insert. ... | 05/02/2006 |
| 7029268 | Non-coaxial injection molding valve flow control In an injection molding machine having upstream and downstream channels communicating with each other for delivering fluid material to one or more mold cavities, apparatus for controlling delivery of the melt material from the channels to the one or more mold caviti... | 04/18/2006 |
| 7008585 | Mechanism for making openings in plastic parts within a mold tool An assembly disposed within a mold for forming openings in a plastic part includes a punch pin and a backing pin having faces disposed flush with a surface of a mold cavity. The backing pin is disposed opposite the punch pin. The punch pin is driven into the complet... | 03/07/2006 |
| 6995644 | Stick-type ignition coil having improved structure against crack or dielectric discharge A stick-type ignition coil have a central core, a cylindrical member, primary spool, primary coil, secondary spool, secondary coil, outer core and a resin insulator. The two longitudinal end corners and faces of the core are covered by respective buffer members. The... | 02/07/2006 |
| 6955077 | Pipette tip with an internal sleeve and method for forming same A pipette tip member having an elongated tubular receptacle having a sidewall with a bifurcated section that comprises first, second, and third sidewall portions. The first sidewall portion comprises a base wall and the second and third sidewall portions branch ther... | 10/18/2005 |
| 6939500 | Method and apparatus for eliminating a parting line witness mark from a molded part Method and apparatus for molding a sealing surface of revolution on a molded part in first and second partable mold halves that mate at a major parting line plane. First and second mold inserts each have a sub-insert trim wheel component shaped to mold form the seal... | 09/06/2005 |
| 6887407 | Method for producing a laminated article A method for producing a multilayer molded article having good feeling of touch without giving damages on a skin material at the vicinity of gate portions by fushion-bonding integrally a skin material to a core material using a horizontal mold clamping type injectio... | 05/03/2005 |
| 6887419 | De-gating mold for injection molding of elastic materials A multi-material runner gate system allows effective de-gating of elastomeric materials that would otherwise stretch and/or flex reducing de-gating forces at the gate upon separation of the molds. ... | 05/03/2005 |
| 6884381 | Injection molding method and device An injection molding method and device, wherein, in order to minimize dimension errors of molded products, molten resin is injected from a nozzle (23) retaining therein pre-pressurized molten resin such as plastic into the cavity (3) via an annular gat... | 04/26/2005 |
| 6840758 | Valve bushing assembly A valve bushing assembly for use in an injection molding apparatus is provided. The injection molding apparatus includes a manifold block, a valve pin, and an actuator block. The manifold block has at least one melt channel therein. The manifold block has an exterio... | 01/11/2005 |
| 6832909 | Injection nozzle for plastic injection moulding equipment An injection nozzle for plastic injection moulding equipment having a nozzle tip (4) with an internal hollow element (5) made of a material with high thermal conductivity, and an external hollow element (6) made of a material with a lower therma... | 12/21/2004 |
| 6830447 | Valve gate assembly for injection molding A valve pin assembly for an injection molding apparatus comprising a valve pin capable of movement up and down in a nozzle to open and close a ring gate. An annular passage is created through the nozzle and is unobstructed and without restriction at all points up to... | 12/14/2004 |
| 6805819 | Method of manufacturing concrete form A cylindrical concrete receiver 10 is caused to project from a top section 3 of a body section 11 forming a frame 2. When concrete 5 is filled in the body section 11, part of the concrete 5 is caused to overflow insid... | 10/19/2004 |
| 6767489 | Method to mold round polyurethane rollers free of injection gates, parting lines and bubbles Solid rollers of a urethane material are formed in closed mold formed by a tube and two end plugs spaced by a shaft, the latter becoming the shaft for the roller. The closed mold avoids rough grinding to a cylindrical shape, as well as avoiding the resulting waste o... | 07/27/2004 |
| 6767494 | Method and apparatus for injection molding a threaded syringe plunger rod A plunger rod for a syringe in is of integrally injection molded plastic construction having an elongated body with a coaxial end portion. An external thread extends around the end portion for threaded receipt into a plunger tip that is slidably received in a syring... | 07/27/2004 |
| RE38480 | Injection nozzle and method for injection molding A valve stem is mounted in a nozzle body, with the valve stem moving from an open position retracted from the injection orifice permitting the flow of resin to the mold cavity, to a closed position blocking the injection orifice and preventing the flow of resin to t... | 03/30/2004 |
| 6696006 | Mold for flashless injection molding to encapsulate an integrated circuit chip An injection mold is provided for injection molding an encapsulation material to encapsulate at least one integrated circuit chip. The injection mold includes at least two parts that define at least one injection circuit, and at least one blind complement... | 02/24/2004 |
| 6676401 | In-mold gate opening and closing mechanism and metal mold for injection molding The present invention relates to an in-mold gate opening and closing mechanism in which it is easy to adjust the gate balance, more specially, in an in-mold gate opening and closing mechanism, in which a gate pin disposed in a gate in a mold is moved in l... | 01/13/2004 |
| 6669891 | Method and apparatus for producing brake lining material An apparatus and method for producing a sheet of brake lining material utilizes a mold which has a mold base and a mold frame. The mold frame is slidingly received on the mold base. The sliding relationship between the mold frame and the mold base results... | 12/30/2003 |
| 6645417 | Gateless molding Method and apparatus for forming an article from a molten plasticized resin using an injection molding machine by (a) forming a mold cavity having a first region for producing a molded part and a second, distinctive region for receiving a plasticised resi... | 11/11/2003 |
| 6638050 | Injector for injection moulding of plastic materials Injector (1) for injection molding of plastic materials, comprising a body (2, 6) and a passage for running hot plastic material into the mold, an axially mobile pin (7) in the body (2, 6) for controlling said passage and a linear actuator (8) for control... | 10/28/2003 |
| 6604933 | Universal nozzle tip for injection molding An injection molding nozzle tip has a particular arrangement of geometries that allow a sharp Ɗt point to be effected at a transition section between a heat sink area (adjacent to an external mold) and a heated reservoir that contains molten resin. The h... | 08/12/2003 |
| 6599116 | Valve pin actuator A valve pin actuator is disclosed that includes a cylinder mounted to the clamping plate, a piston slidably mounted in the cylinder, and a valve pin assembly carried by the piston. A hydraulic or pneumatic circuit is provided for controlling the movement ... | 07/29/2003 |
| 6592352 | Offset edges mold for plastic packaging of integrated semiconductor devices A mold for packaging an integrated semiconductor device includes two half shells closing on a perimeter dam bar of a die-stamped assembly metal frame of a semiconductor die that is between the two half shells of the mold. A depressed central pad of the me... | 07/15/2003 |
| 6579486 | Manufacturing method for flanged resin product A manufacturing method for a resin product comprised of a plurality of separate pieces and having a flange, the plurality of separate pieces including one as a separate piece having a flange corresponding to the flange of the resin product, comprises prim... | 06/17/2003 |
| 6579488 | Process for producing a thermoplastic resin molded article The present process includes a mold for producing a thermoplastic resin molded article, comprising paired sliding female and male mold members, which mutually slide at the time of mold closing. A product-forming portion and a non-product-forming portion a... | 06/17/2003 |
| 6562271 | Nonslip member and manufacturing method of nonslip member A nonslip member in which a large number of nonslip convexes are fixed to an upper surface of a base fabric performing an anchoring action, and the nonslip convexes are made of rubber. By engaging a male mold and a female mold with each other, a large number ... | 05/13/2003 |
| 6558597 | Process for making closed-end ceramic tubes A process for forming an end cap in an extruded ceramic tube. An end cap forming cavity of an end cap forming die is positioned so that, when the body of the end cap forming die is situated against an extrusion die, ceramic material is able to be forced i... | 05/06/2003 |
