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| Number | Title | Issue Date |
| 7320765 | Gas pin for thermocouple for gas assisted injection molding A method and system for forming an injection molded plastic part. After the injection of plastic material has started, a volume of gas from a fixed volume reservoir is introduced into the plastic material at a low pressure forming a hollow cavity. The gas is introdu... | 01/22/2008 |
| 7255818 | Process control for gas-assisted injection molding applications A method and system for controlling a fluid-assisted injection molding process for producing a molded plastic article. The fluid can be gas, water or another fluid. One or more pressure transducers are positioned in the mold cavity and generate signals to control th... | 08/14/2007 |
| 7198477 | Mechanical shut-off valve for gas-assist injection molding A mechanical shut-off valve member for use with gas-assisted injection molding systems. A piston member is slidingly positioned in a body member or housing and spring-biased to a closed position. The valve member is opened by the injection of plastic material throug... | 04/03/2007 |
| 6939504 | Plastic injection molding with moveable insert members A method and system for producing hollow rib structures for trim components and panels using gas assisted injection molding. Movable insert members are provided in the mold cavity, particularly at the ends of the structural rib members. After the plastic material is... | 09/06/2005 |
| 6899843 | Plastic injection molding with moveable mold members forming speaker grill A method and system for producing hollow rib structures for trim components and panels using gas-assisted plastic injection molding. Movable and floating core members are provided in the mold cavity, particularly adjacent structural rib members. After the plastic ma... | 05/31/2005 |
| 6890478 | Open mold molding A method and system for producing thin walled plastic products with hollow rib members using gas-assisted plastic injection molding. The mold is allowed to open a predetermined distance as the gas is injected into the plastic material in the mold cavity. A plurality... | 05/10/2005 |
| 6890477 | Plastic injection molded articles with hollow rib members A method and system for producing hollow rib structures for trim components and panels using gas assisted injection molding. Spring biased movable insert members are provided in the mold cavity, particularly at the ends of the structural rib members. After the plast... | 05/10/2005 |
| 6787097 | Multiple cavity gas assisted plastic injection molding A method and system for multiple-cavity gas-assisted plastic injection molding. Each of the mold cavities are oriented in the vertical direction with the valve gates for the plastic material being positioned at the lower vertical ends of the mold cavities. With four... | 09/07/2004 |
| 6730262 | Plastic injection molding with rotating insert members A method and system for producing hollow rib structures for trim components and panels using gas assisted injection molding. Rotatable insert members with recesses therein are provided in the mold cavity, particularly at the ends of the structural rib members. Once ... | 05/04/2004 |
