Patent application number | Description | Published |
20090086568 | CONTINUOUS BI-METALLIC TWIN BORE BARREL FOR SCREW EXTRUDER AND METHOD OF MAKING SAME - A continuous bi-metallic twin bore barrel is produced by forming first and second single bore barrels, centrifugally lining the bores of the single bore barrels with a bi-metallic liner, heating the single bore barrels to harden the linings, fastening each single bore barrel into a barrel machining jig, and cutting each single bore barrel along its length to expose its bore. The barrel machining jigs are fastened together such that two single bore barrels are positioned adjacent and in contact with one another and their bores are in communication with one another. The two single bore barrels are seal welded together to form a twin bore barrel. The twin bore barrel is removed from the jigs and clamped along its length. | 04-02-2009 |
20090269428 | UNDERWATER PELLETIZER - An underwater pelletizer for cutting extruded plastic into a flow of liquid is disclosed. The pelletizer includes a cutter hub ( | 10-29-2009 |
20100251561 | CENTRIFUGAL PELLET DRYER AND DEWATERING ASSEMBLY - A centrifugal pellet dryer ( | 10-07-2010 |
20100320628 | Magnetic Clamp for Underwater Pelletizer - An underwater pelletizer is presented having an electromagnetic clamp that includes an electromagnetic ring body having a series of electromagnets disposed along a contact surface of the electromagnetic ring body. A clamping ring body has a series of mild steel inserts disposed along a contact surface of the clamping ring body, where each mild steel insert is disposed in a position complementary to at least one of the series of electromagnets. The electromagnetic clamp ring has a contact face with a series of electromagnets disposed therein and providing a clamping ring having a contact face with a series of mild steel inserts disposed therein, where the contact face of the clamping ring is configured to engage the contact face of the electromagnetic ring to form a seal and the mild steel inserts are positioned such that each one of the series of electromagnets is adjacent to one of the mild steel inserts when the contact faces of the electromagnetic and clamping rings are engaged. The method involves disposing the electromagnetic ring and the clamping ring between the water chamber and a die face, activating the series of electromagnets to clamp the electromagnetic ring to the clamping ring, and deactivating the series of electromagnets to gain access to the water chamber. | 12-23-2010 |
20110308100 | Centrifugal Dryer with Replaceable Blades and Self-Cleaning Rotor Seal and Centrifugal Dewatering Tower - A centrifugal pellet dryer with a self-cleaning rotor seal, replaceable wear plates, and a fluid powered dewatering tower is presented. The self-cleaning roter seal includes a plurality of grooves that are structured to eject pellet debris that migrates into between the seal and the housing for the rotor. The replaceable wear plates are secured to the rotor at locations such that they contact pellets that are entering the rotor housing. The dewatering tower includes a helical augur that dewaters a pellet slurry and delivers partially dried pellets to the rotor housing. | 12-22-2011 |
20120060386 | Low Impact Belt Dryer - A low impact belt dryer is presented for drying pellets while minimizing high-energy pellet collisions that may create pellet dust or cause pellets to fracture. The dryer includes a vacuum chamber having multiple air knife assemblies that direct high velocity drying fluid towards the pellets and though a liquid-permeable pellet-impermeable belt to a vacuum port. The low impact dryer may also include a centrifugal dryer for dewatering the pellets before they pass though the vacuum chamber. The conveyor belt of the dryer may transport the pellets through multiple desiccation chambers where low velocity air is directed upwards though the belt to both dry and levitate the pellets above the belt. The dryer may also include a cleaning chamber for removing debris from the liquid-permeable pellet-impermeable belt. | 03-15-2012 |
20120112113 | Piston Valve Having Piston With Grooves For Particulate Capture - A diverter valve for use with fluids containing particulate matter is presented. The diverter valve includes a piston slidable between a first and second position in a valve casing. In the first position, a pass-through transverse bore in the piston is aligned with openings in the valve casing to allow a fluid to pass through to a first conduit. In a second piston position, a port for a diverter bore in the piston is aligned with an opening in the valve casing such that the fluid is diverted away from the first conduit. The piston includes a plurality of grooves structured to capture fluid and particulate matter that enters the slight gap between the piston and the valve casing. | 05-10-2012 |
20130004606 | Underwater Pelletizer - An Underwater pelletizer for cutting extruded plastic into a flow of liquid. The pelletizer includes a cutter hub ( | 01-03-2013 |
20130122133 | Continuous Bi-Metallic Twin Bore Barrel for Screw Extruder and Method of Making Same - A continuous bi-metallic twin bore barrel is produced by forming first and second single bore barrels, centrifugally lining the bores of the single bore barrels with a bi-metallic liner, heating the single bore barrels to harden the linings, fastening each single bore barrel into a barrel machining jig, and cutting each single bore barrel along its length to expose its bore. The barrel machining jigs are fastened together such that two single bore barrels are positioned adjacent and in contact with one another and their bores are in communication with one another. The two single bore barrels are seal welded together to form a twin bore barrel. The twin bore barrel is removed from the jigs and clamped along its length. | 05-16-2013 |