Underwater pelletizer

Details Underwater pelletizer Underwater pelletizer

2007-06-18

2011-12-27

Theisen, Mary F (Department: 1743)

Plastic article or earthenware shaping or treating: apparatus

Immersed shaping orifice discharging directly into liquid...

C425S313000

Reexamination Certificate

active

08083509

ABSTRACT:
An underwater pelletizer for cutting extruded plastic into a flow of liquid is disclosed. The pelletizer includes a cutter hub (90) carrying at least one cutter blade (96), a cutter shaft (60) for rotationally driving the cutter hub, and a flexible torque converter (80) for connecting a motor to the cutter hub. In one embodiment, the torque converter has a first set of bushings (82) that is fastened to a face (98) of the cutter hub and a second set of bushings that is fastened to a face (64) of the cutter shaft. The disclosed pelletizer has a shaft extension (20) configured to engage a motor shaft, the shaft extension having an outer diameter having formed thereon a splined portion (38) and first (26) and second (28) sealing surfaces. A disclosed motor adaptor (40) has a seal surface (44). A water chamber plate (50) may also have a seal surface (52). A first mechanical seal (48) is illustratively configured to engage the first seal surface (26) of the shaft extension and the seal surface (44) of the motor adaptor. A second mechanical seal (49) is illustratively configured to engage the second seal surface (28) of the shaft extension and the seal surface (52) of the water chamber plate. Furthermore, a cutter shaft (60) has a splined bore (62) formed therein for engaging the splined portion (38) of the shaft extension.

REFERENCES:
patent: 3912434 (1975-10-01), Nagahara et al.
patent: 4019414 (1977-04-01), Thomas et al.
patent: 5059103 (1991-10-01), Bruckmann et al.
patent: 7520458 (2009-04-01), Schulz
patent: 2002/0176905 (2002-11-01), Fridley
patent: 2004/0009254 (2004-01-01), Eloo et al.
patent: 2007/0003655 (2007-01-01), Brandstaetter et al.

Affiliated with

Also associated with

Rating

Underwater pelletizer does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Underwater pelletizer, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Underwater pelletizer will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4268720