Patent · US Expired

Method for the manufacture of an expansible anchor consisting of corrosion-resistant steel

US5637158A · kind A · utility

1Cited by

2References

5Claims

0Family size

Assignee

fischerwerke Artur Fischer GmbH & Co. KG · DE

Inventors

Norbert Arnold · Pfalzgrafenweiler, DE
Bernd Hein · Baiersbronn, DE
Paul Gumpel · Stockach, DE

Key dates

Filing date	Nov 30, 1995
Grant date	Jun 10, 1997
Priority date	—
Expiry date	Nov 30, 2015

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB22F5/00
WIPO fieldMaterials, metallurgy
WIPO sectorChemistry

Abstract

A method of manufacturing an expansible anchor comprises the steps of forming one part as a partially slotted expansible sleeve composed of corrosion-resistant steel and anchorable in a building component, forming another part as an expander body composed of corrosion-resistant steel and arranged to be driven into the expansible sleeve so as to anchor the expansible sleeve in the building component, enriching one of the parts with interstitially dissolved, non-metallic alloying constituents selected from the group consisting of carbon, nitrogen and boron, and ageing by heat treating so as to precipitate the alloying constituents in the form selected from the group consisting of carbides, nitrides and borides, respectively, to achieve increased hardness.

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