Apparatus for automatic control of cage size in an extruded...

Details Apparatus for automatic control of cage size in an extruded... Apparatus for automatic control of cage size in an extruded...

2011-04-12

2011-04-12

Del Sole, Joseph S (Department: 1743)

Plastic article or earthenware shaping or treating: apparatus

Shaping orifice and downstream work contacting gaseous...

C425S140000, C425S326100

Reexamination Certificate

active

07922470

ABSTRACT:
A system and controller for positioning an adjustable sizing cage for use with a blown film extrusion apparatus. A cage sizing subsystem is used to position the cage relative to the film tube. At least two non-contact sensors arranged on the sizing cage to provide signals to an automatic controller, which in turn positions the sizing cage a predetermined distance from the extruded tube. Two different modes of operation are provided for the controller when the size of the tube is to be changed: a forecast mode in which relatively large cage movements of the cage are made, and a contact mode in which the cage is maintained either in contact with the extruded tube, or at an operator selected distance from the extruded tube.

REFERENCES:
patent: 4189288 (1980-02-01), Halter
patent: 4355966 (1982-10-01), Sweeney et al.
patent: 4402656 (1983-09-01), Schott, Jr.
patent: 4409160 (1983-10-01), Kogo et al.
patent: 5206599 (1993-04-01), Mayer
patent: 5470216 (1995-11-01), Saito et al.
patent: 5525277 (1996-06-01), Joseph
patent: 5643611 (1997-07-01), Peters et al.
patent: 5951926 (1999-09-01), Sensen et al.
patent: 6196827 (2001-03-01), Pottorff
patent: 6293778 (2001-09-01), Joseph
patent: 6562263 (2003-05-01), Cree
patent: 2004/0086587 (2004-05-01), Meyer

Affiliated with

Also associated with

Rating

Apparatus for automatic control of cage size in an extruded... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Apparatus for automatic control of cage size in an extruded..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus for automatic control of cage size in an extruded... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2682660