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7364131 |
Non-return valve for use in a molding system
The present invention relates to a non-return valve that can be configured for use anywhere along a molding material flow path in a molding system. The non-return valve of the present invention...
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7131625 |
Ejector pin and method
An insert for a mold comprising a plug, having an insert face, and a receiver defined by a sidewall with one of the plug and the receiver having a groove that receives a guide that extends from the...
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6942376 |
Extruder mixing
An extruder for producing a thermoplastic material having a first and second portion, namely, an axially extending barrel; first and second screw conveyers co-axially disposed within said barrel,...
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6827569 |
Mold vent and method
A mold vent and method. The vent has expanding passages. A preferred vent comprises an insert that has a plurality of passages. One insert comprises a grate formed of a plurality of portions that...
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6499987 |
Positive control non-return valve for an injection molding machine
An improved positive control non-return valve assembly which is mounted on the front end of a helical plasticating screw of an injection molding machine. The valve assembly comprises a thread...
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6464488 |
Sliding ring non-return valve
A sliding ring non-return valve primarily for use with an injection molding machine utilizes a frame having cut therein one or more longitudinal grooves. Material flows around the outer edge of a...
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6308929 |
Mold insert
An insert for a mold comprising a plug, having an insert face, and a receiver defined by a sidewall with one of the plug and the receiver having a groove that receives a guide that extends from the...
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6203311 |
Sliding ring non-return valve
A sliding ring non-return valve primarily for use with an injection molding machine utilizes a frame having cut therein one or more longitudinal grooves. Material flows around the outer edge of a...
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5470514 |
Injection molding method for a shot of determined mass
A non-return valve (10) primarily for use with an injection molding machine utilizes a frame (12) which surrounds a first bore (34) and a second bore (32). The second bore (32) is accessed by...
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5258158 |
Positive-type non-return valve and method of using valve
A positive-type, non-return valve (10) primarily for use with an injection molding machine utilizes a frame (12) which surrounds a first bore (34) and a second bore (32). The second bore (32) is...
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