Annular gap expander

Plastic and nonmetallic article shaping or treating: processes – With measuring – testing – or inspecting – Positioning of a mold part to form a cavity or controlling...

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

264 406, 264 407, 264118, 264141, 2641761, 26421110, 26421111, 26421121, 425144, 425145, 425202, 425203, 425311, 425313, 4253823, 4253824, 426516, B29C 4792

Patent

active

054785111

ABSTRACT:
A method and apparatus in the context of a rotating conveying screw situated within a cylindrical housing which has an inlet port on one end of the cylinder and a discharge opening on the other end of the cylinder. A resistance plate is mounted transversely to the conveying screw near the discharge opening for corotation with the screw. The plate is mounted to define a discharge gap between the opening and the plate. A sleeve on the housing is employed to adjust the size of the gap between the plate and the opening. A process controller positions the sleeve by means of a pair of screw jacks. The controller adjusts the discharge gap width to maintain feed material temperature within a predetermined band. Alternatively the controller adjusts the discharge gap width and feed screw speed to maintain a predetermined specific energy input into the feed material. The helical screw is preferably supported at both ends by a bearing means. Breaker bars are mounted on the transverse plate and extend over the gap between the discharge opening and the plate. Breaker bars may also be mounted to the cylindrical sleeve and extend over the gap between the sleeve and the plate.

REFERENCES:
patent: 2994105 (1961-08-01), Seal et al.
patent: 3034421 (1962-05-01), Pence
patent: 3137035 (1964-06-01), Hendry
patent: 3382538 (1968-05-01), Burner
patent: 3420160 (1969-01-01), Mast
patent: 3533801 (1970-10-01), Wenger
patent: 4097213 (1978-06-01), McComb et al.
patent: 4171668 (1979-10-01), Ratcliffe
patent: 4751030 (1988-06-01), Volk
patent: 5149555 (1992-09-01), Flindall
patent: 5338559 (1994-08-01), Schaaf
patent: 5366680 (1994-11-01), Foresman
International Search Report for International Application No. PCT/US94/04748 (Sep. 5, 1994).

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Annular gap expander does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

     

Profile ID: LFUS-PAI-O-1366830

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.