Patent · US Expired

Hollow rod comprised of a shirred tubular casing and closure element

US4764031A · kind A · utility

2Cited by

6References

4Claims

0Family size

Assignee

Hoechst GmbH · DE

Inventors

Elfriede Hutschenreuter · Schlangenbad, DE
Max Bytzek · Naurod, DE
Klaus Andrae · Zornheim, DE
Alois Weinheimer · Alzey, DE

Key dates

Filing date	Jan 23, 1987
Grant date	Aug 16, 1988
Priority date	—
Expiry date	Jan 23, 2007

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10S206/802
WIPO fieldOther special machines
WIPO sectorMechanical engineering

Abstract

Disclosed is a cylindrically-shaped hollow rod which is closed at one end, comprising a shirred tubular casing, and an integral, essentially cylindrically-shaped, plug-type closure element which is coaxially arranged in the cavity of the hollow rod and which comprises a deshirred tubing portion and an irregularly folded, compressed tubing portion, wherein a first one of the tubing portions is adjacent to the inside wall of the hollow rod, and the second tubing portion is surrounded by the first tubing portion, wherein one end of the first tubing portion, which points in the direction of the open end of the hollow rod, is bent back at an angle of 180.degree. and integrally changes into the second portion, and wherein the other end of the first tubing portion integrally changes into the hollow rod. Also disclosed is a process for producing the hollow rod having the end closure according to the invention.

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