Plastic article or earthenware shaping or treating: apparatus – With upstream screen or perforated plate for straining,... – Plural screens or plates
Patent
1980-05-07
1982-04-06
Thurlow, Jeffery R.
Plastic article or earthenware shaping or treating: apparatus
With upstream screen or perforated plate for straining,...
Plural screens or plates
2642098, 425380, 425466, 425467, B29D 2304
Patent
active
043233392
ABSTRACT:
An apparatus for forming a plastic pipe having a circular cross-section and elongated longitudinal channels in the pipe wall is disclosed. A mass of synthetic plastic material is pressed through an annular space defined by inner and outer annular supports, the annular space having a plurality of spaced pin supports concentrically disposed therein and regulating the quantity of material flow through the annular space, depending on the shape of the pin supports, by selectively moving the walls of the annular supports closer to each other. In a particularly advantageous embodiment, either the wall of the inner annular support or the wall of the outer annular support, or both, are moved closer to each other in the area between adjacent pin supports.
REFERENCES:
patent: 2551710 (1951-05-01), Slaughter
patent: 3117342 (1964-01-01), Koppehele
patent: 3266092 (1966-08-01), Corbett
patent: 3273202 (1966-09-01), Zygan
patent: 3274315 (1966-09-01), Kawamura
patent: 3372920 (1968-03-01), Corbett et al.
patent: 3668288 (1972-06-01), Takahashi
patent: 3714310 (1973-01-01), Gaffney et al.
patent: 3815637 (1974-06-01), Carrow
patent: 3978182 (1976-08-01), Luthra
de Kok Johan
van Dongeren Jan P.
Thurlow Jeffery R.
Wavin B.V.
LandOfFree
Device for manufacturing plastics pipes with oblong channels does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Device for manufacturing plastics pipes with oblong channels, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Device for manufacturing plastics pipes with oblong channels will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-590689