Patent · US Expired

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US4720950A · kind A · utility

41Cited by

2References

16Claims

0Family size

Assignee

Franz Xaver Bayer Isolierglasfabrik KG · DE

Inventors

Franz Bayer · Linz, AT
Karl A. Grosch · Wuppertal, DE

Key dates

Filing date	Jul 25, 1986
Grant date	Jan 26, 1988
Priority date	—
Expiry date	Jul 25, 2006

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T29/49982
WIPO fieldCivil engineering
WIPO sectorOther fields

Abstract

Elbows in tubular blanks which are filled with a desiccant are formed by clamping a blank at one side of the intended locus of the elbow, by bending the blank at the other side of the intended locus of the elbow relative to the clamped portion of the blank, by propping the blank in the region of the inner wall of the developing elbow, and by plasticizing the material of the blank in the region of the outer wall of the developing elbow so that the material of such outer wall is less likely to exhibit cracks and/or to burst as a result of bending of the blank.

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