Patent · US Expired

Head box for a paper making machine

US4198270A · kind A · utility

5Cited by

5References

8Claims

0Family size

Assignee

Sulzer Brothers Limited · CH

Inventors

Rudiger Kurtz · Heidenheim, DE
Christoph Link · Weingarten, DE
Wolfgang Trudel · Bad Waldsee, DE
Siegfried Reutter · Eberhardzell, DE

Key dates

Filing date	May 23, 1978
Grant date	Apr 15, 1980
Priority date	—
Expiry date	May 23, 1998

Classification

Technology area (CPC D)Textiles; Paper
CPC primaryD21F1/028
WIPO fieldTextile and paper machines
WIPO sectorMechanical engineering

Abstract

The head box has a plurality of distribution pipes for delivering pulp with each distribution pipe communicating via a plurality of feed pipes with a row of flow ducts in a block having a plurality of rows of flow ducts. The feed pipes have equal flow resistance and each has a pin-shaped part at the inlet end which acts to anchor the feed pipe in place. Each pin-shaped part also carries a cam which projects into a distribution pipe to keep the inlet to the respective feed pipe free of fibers.

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