Patents Assigned to DTL Technology Limited Partnership
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Patent number: 6841262Abstract: A preform having an annular wall region of increased wall thickness to produce a blow molded container having an annular concavity in a wall portion thereof to provide a hand grip feature, such a container when blow molded from such a preform and a carbonated beverage container having intaglio hand grip wall hand grip features.Type: GrantFiled: October 19, 2000Date of Patent: January 11, 2005Assignee: DTL Technology Limited PartnershipInventors: Martin H. Beck, Robert J. Caldicott
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Patent number: 6814920Abstract: A method of preventing delamination of multiple layers of an oriented polymer container having an opening defined by the multiple layers comprising a bi-axially oriented multilayer polymer container having an opening defined by a perimeter at which the multiple layers are exposed; heating the perimeter until workable; providing a curling die; feeding the multilayer perimeter into the curling die to curl the perimeter sufficiently to inhibit delamination of the layers and a container when so made.Type: GrantFiled: December 13, 2001Date of Patent: November 9, 2004Assignee: DTL Technology Limited PartnershipInventors: Martin H. Beck, George F. Rollend
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Patent number: 6814248Abstract: A handgrip formed in a wall of a plastics container, the wall having an interior, an interior surface, an exterior surface and a wall thickness and suitable for containing a carbonated beverage, including an integral structure formed of a central dome having a convex surface facing toward the adjacent said exterior surface and at least two concentric annular troughs, each having an annular concave surface facing the adjacent said exterior surface, an outer frustum interconnected with each trough and connecting rings, each of curved cross-section having an annular concave surface facing toward the interior, to join, integrally, the frustums to the next outer trough and the outermost frustum to the container wall surrounding the handgrip, the handgrip having a thickness approximately equal to the wall thickness, wherein the handgrip does not extend radially outwardly of the wall. An associated container, blow mold and method are also included.Type: GrantFiled: August 8, 2002Date of Patent: November 9, 2004Assignee: DTL Technology Limited PartnershipInventors: Martin H. Beck, Dennis Connor
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Patent number: 6564531Abstract: A blow molded, bi-axially oriented plastic canister or container has a generally cylindrical body, a bottom, and a tapering upper portion, which terminates at a wide mouth or opening surrounded by a radially outwardly directed annular flange having an inwardly facing corner. A generally disc-shaped closure insert having a circumferential rim and a dispensing outlet is placed across the opening such that the closure rim is generally fitted into the corner of the annular flange. Heat or some other form of energy is applied to the entirety of the annular flange, which in response shrinks to tightly conform to and engage the closure rim, forming a circumferential seal. The dispensing outlet may be provided with an outlet closure, such as a screw cap or the like. Also, a sealant may be disposed between the annular flange and the closure rim before the heat is applied in order to form an enhanced seal.Type: GrantFiled: December 18, 2000Date of Patent: May 20, 2003Assignee: DTL Technology Limited PartnershipInventor: Martin H. Beck
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Patent number: 6382946Abstract: A multi-cavity coinjection mold and method for simultaneously producing a plurality of multi-layered articles comprising: a mold structure defining a plurality of mold cavities; a first supply source for supplying metered amounts of a first molding material; a second supply source for supplying metered amounts of a second molding material; a hot runner system in communication with the first and second supply sources for conveying the metered amounts of the first and the second materials separately to a region proximate each of the cavities; the region comprising having a pin controlled passage leading to proximate cavity by way of a gate having the same cross-section as the passage, the pin scavenging material from the passage and providing cavity packing.Type: GrantFiled: April 1, 1998Date of Patent: May 7, 2002Assignee: DTL Technology Limited PartnershipInventors: Martin H. Beck, George F. Rollend, John H. Muszynski
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Patent number: 6237791Abstract: A method of forming a wide mouth blow molded thermoplastic container comprising the steps of i) stretch blow molding from a preform, an intermediate article defining the container with the mouth being threaded and/or flanged, the mouth terminating in an accommodation element having a neck finish that supports the preform in the blow mold; ii) heat setting the intermediate article including the entire container while still in the mold, and iii) removing the intermediate article of manufacture from the mold and severing the accommodation element to produce the container, and an article when made by the method. The method also includes post forming of a rim portion of the container following separation of the container from the accommodation element.Type: GrantFiled: July 14, 1999Date of Patent: May 29, 2001Assignee: DTL Technology Limited PartnershipInventors: Martin H. Beck, George F. Rollend, Robert J. Caldicott
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Patent number: 6171538Abstract: A multi-cavity coinjection mold and method for simultaneously producing a plurality of multi-layered articles comprising: a mold structure defining a plurality of mold cavities; a first supply source for supplying metered amounts of a first molding material; a second supply source for supplying metered amounts of a second molding material; a hot runner system in communication with the first and second supply sources for conveying the metered amounts of the first and the second materials separately to a region proximate each of the cavities; a valve mechanism per cavity for receiving the metered amounts of the first and second materials from the hot runner system and for sequentially supplying desired quantity of the first and second materials contiguously to each cavity.Type: GrantFiled: April 29, 1999Date of Patent: January 9, 2001Assignee: DTL Technology Limited PartnershipInventors: Martin H. Beck, George F. Rollend
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Patent number: 6129536Abstract: A multi-cavity coinjection mold having a relatively large plurality of cavities for simultaneously molding a relatively large plurality of multi-layered articles including a) a plurality of cavity groups each defining a relatively small plurality of said cavities, a single balanced hot runner for supplying said relatively small plurality of cavities with contiguous different plastics materials, and a valve for sequentially supplying desired contiguous quantities of the plastics materials from plastics material sources, common to all of said groups, to the balanced hot runner; and b) a hot runner manifold system connected to the plastic material sources to supply the plastic materials to all of the valves; and related methods.Type: GrantFiled: May 5, 1999Date of Patent: October 10, 2000Assignee: DTL Technology Limited PartnershipInventors: Martin H. Beck, George F. Rollend
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Patent number: 6126886Abstract: A method of forming a wide mouth blow molded thermoplastic container comprising the steps of i) stretch blow molding from a preform, an intermediate article defining the container with the mouth being threaded and/or flanged, the mouth terminating in an accommodation element having a neck finish that supports the preform in the blow mold; ii) heat setting the intermediate article including the entire container while still in the mold, and iii) removing the intermediate article of manufacture from the mold and severing the accommodation element to produce the container, and an article when made by the method. The method also includes post forming of a rim portion of the container following separation of the container from the accommodation element.Type: GrantFiled: April 1, 1998Date of Patent: October 3, 2000Assignee: DTL Technology Limited PartnershipInventors: Martin H. Beck, George F. Rollend, Robert J. Caldicott
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Patent number: 6062408Abstract: A method of forming a wide mouth blow molded thermoplastic container comprising the steps of i) stretch blow molding from a preform, an intermediate article defining the container with the mouth being threaded and/or flanged, the mouth terminating in an accommodation element having a neck finish that supports the preform in the blow mold; ii) heat setting the intermediate article including the entire container while still in the mold, and iii) removing the intermediate article of manufacture from the mold and severing the accommodation element to produce the container, and an article when made by the method.Type: GrantFiled: April 9, 1997Date of Patent: May 16, 2000Assignee: DTL Technology Limited PartnershipInventors: Martin H. Beck, George F. Rollend, Robert J. Caldicott
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Patent number: 5971735Abstract: A multi-cavity coinjection mold having a relatively large plurality of cavities for simultaneously molding a relatively large plurality of multi-layered articles including a) a plurality of cavity groups each defining a relatively small plurality of said cavities, a single balanced hot runner for supplying said relatively small plurality of cavities with contiguous different plastics materials, and a valve for sequentially supplying desired contiguous quantities of the plastics materials from plastics material sources, common to all of said groups, to the balanced hot runner; and b) a hot runner manifold system connected to the plastic material sources to supply the plastic materials to all of the valves; and related methods.Type: GrantFiled: April 9, 1997Date of Patent: October 26, 1999Assignee: DTL Technology Limited PartnershipInventors: Martin H. Beck, George F. Rollend
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Patent number: 5922363Abstract: A multi-cavity coinjection mold and method for simultaneously producing a plurality of multi-layered articles comprising: a mold structure defining a plurality of mold cavities; a first supply source for supplying metered amounts of a first molding material; a second supply source for supplying metered amounts of a second molding material; a hot runner system in communication with the first and second supply sources for conveying the metered amounts of the first and the second materials separately to a region proximate each of the cavities; a valve mechanism per cavity for receiving the metered amounts of the first and second materials from the hot runner system and for sequentially supplying desired quantity of the first and second materials contiguously to each cavity.Type: GrantFiled: April 7, 1997Date of Patent: July 13, 1999Assignee: DTL Technology Limited PartnershipInventors: Martin H. Beck, George F. Rollend
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Patent number: 5614148Abstract: The invention provides a light weight self-standing blow molded two liter carbonated beverage bottle having a unique petaloid base made from a monobase preform. The base comprises a petaloid design which has a plurality of at least three (preferably five) feet. The monobase preform has a thick reinforcing ring forming portion which remains unstretched during blowing. The reinforcing ring forming portion is thicker than both the sidewall forming portion and the gate area forming portion of the preform thereby resulting in increased stretching in both those areas. The reinforcing ring extends circumferentially around the base. By providing such a reinforcing ring, a bottle having a bigger foot radius and/or containing less material use can be realized. The resulting bottle has less stress whitening and greater stress crack resistance while at the same time using less material and/or having a larger radius than prior bottles.Type: GrantFiled: January 30, 1995Date of Patent: March 25, 1997Assignee: DTL Technology Limited PartnershipInventors: Martin H. Beck, George F. Rollend, John H. Muszynski, Lydia K. Reed, Scott J. Hickey, Dennis C. Connor, Robert Caldicott
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Patent number: 5595799Abstract: A process for injection molding a multi-colored article in an injection mold, in which a) a desired initial quantity of a first-colored material is metered to a first desired portion of the cavity; b) a desired quantity of a second-colored material is supplied to the cavity, contiguously with the first-colored material, and is metered to a second desired portion of the cavity. The location of the first and second desired portions within in the cavity being controlled by providing the first and second-colored materials with appropriate melt viscosities and controlling the temperature and rate of supply of the first and second-colored materials. A multi-colored preform formed by the process that is suitable for blow molding a multi-colored container, and a multi-colored container blow molded from such a preform are also provided.Type: GrantFiled: December 14, 1995Date of Patent: January 21, 1997Assignee: DTL Technology Limited PartnershipInventors: Martin H. Beck, Robert Caldicott, John H. Muszynski