Filter or tool-changing device for screw extruders

Details Filter or tool-changing device for screw extruders Filter or tool-changing device for screw extruders

1981-11-10

1982-11-09

Thurlow, Jeffery R.

Plastic article or earthenware shaping or treating: apparatus

With apparatus assembly or dismantling means or with idle part

Means permitting removal or substitution of elements during...

210236, 210447, 210791, 210DIG15, 366 87, 425186, 425192R, 425197, 4254519, B29F 300

Patent

active

043582621

ABSTRACT:
In a screw extrusion device used for extruding plastics materials, a filter or tool-carrier is disposed at the downstream or outlet end of the extruder, an annular pressure element bearing on the carrier so as to secure and seal the carrier in its operative position. The carrier is displaceable perpendicularly to the flowpath of the plastics material so as to permit facile changing of the filter element. The annular pressure element is acted upon by hydraulic fluid, the hydraulic circuit including an annular pressure chamber. The inner and outer walls of the chamber are formed, respectively, by concentric metal bellows. One end of each bellows is mounted on the pressure element and the other end thereof on a housing.

REFERENCES:
patent: 3237252 (1966-03-01), Ratcliffe
patent: 3479692 (1969-11-01), Biggelaar
patent: 3530916 (1970-09-01), Williams
patent: 3583453 (1971-06-01), Upmeier
patent: 3653419 (1972-04-01), Schutter
patent: 3675934 (1972-07-01), Heston
patent: 3684419 (1972-08-01), Voight
patent: 3940335 (1976-02-01), Kalman
patent: 4277338 (1981-07-01), Hoagland

Affiliated with

Also associated with

Rating

Filter or tool-changing device for screw extruders does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Filter or tool-changing device for screw extruders, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Filter or tool-changing device for screw extruders will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-744386