Patent · US Expired

Modified nozzles for polymer finishers

US4477271A · kind A · utility

3Cited by

7References

12Claims

0Family size

Assignee

E.I. DU PONT DE NEMOURS AND COMPANY · US

Inventors

John M. Iwasyk · Wilmington, US
Robert D. Sauerbrunn · Seaford, US

Key dates

Filing date	May 9, 1983
Grant date	Oct 16, 1984
Priority date	—
Expiry date	May 9, 2003

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08G63/785
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

An apparatus for separating entrained matter from a flowing fluid carrying the entrained matter includes a passage diverging at an angle of from 3 to about 20 degrees in the direction of flow of the fluid and at least one helical flight having the same twist direction throughout located with the passage and tapered to conform thereto. A straight cylindrical pipe is attached to the outlet end of the passage; the pipe contains a straight baffle interlocking to aboout 90 degrees with the helical flight. Opposed edges of the flight may be spaced from or in contact with the wall of the diverging passage.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.