Method of forming socket wrenches from tubing
US4594874A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 11, 1983 |
| Grant date | Jun 17, 1986 |
| Priority date | — |
| Expiry date | Jul 11, 2003 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB21K5/16
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
The disclosed method features an automatic high production process of forming a socket wrench and other elongated hollow parts such as a nutdriver from a tubular metal workpiece. The method of making a nutdriver includes extruding a workpiece through a tapered female die to reduce both the inside and outside diameters at one end of the workpiece and along a predetermined portion of its length from that one end of the workpiece. A recess of non-circular cross section is formed at the other end of the workpiece. In the method of making a socket wrench, an additional step is included in forming another recess of non-circular cross section at the reduced end of the workpiece.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.