Title:
MANUFACTURE OF EXPANDING CASING MADE OF METAL FOR EXPANDING BOLT
Document Type and Number:
Japanese Patent JPS60158941
Kind Code:
A
Abstract:
An axially elongated expansion sleeve is formed from an extruded cylindrically shaped blank with a blind hole in one end. An axially extending part of the blank from the other end is deformed into a U-shaped section of uniform thickness. The U-shaped section is upset so that it increases in thickness toward the other end. The upset U-shaped section is shaped to provide it with a cylindrically shaped outside surface with the inside base of the section sloping toward the axis of the sleeve in the direction toward the other end.
Inventors:
GUSUZUTAFU RANGU
EERIHI REIBUHARUDO
PEETAA FUREERIHI
EERIHI REIBUHARUDO
PEETAA FUREERIHI
Application Number:
JP48185A
Publication Date:
August 20, 1985
Filing Date:
January 08, 1985
Export Citation:
Assignee:
HILTI AG
International Classes:
B21K1/44; B21K1/74; B21K1/76; F16B13/12; (IPC1-7): B21K1/44; B21K1/76; F16B13/12
Attorney, Agent or Firm:
Akihide Sugimura