Patent · US Expired

Forming an extruded bar out of metal chips

US4174933A · kind A · utility

0Cited by

4References

2Claims

0Family size

Assignee

Combustion Engineering, Inc. · US

Inventors

Robert D. Mitchell · Scottsdale, US
Albert C. Schulz · Isny im Allgäu, DE

Key dates

Filing date	Dec 27, 1977
Grant date	Nov 20, 1979
Priority date	—
Expiry date	Dec 27, 1997

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB21C23/08
WIPO fieldMachine tools
WIPO sectorMechanical engineering

Abstract

Apparatus for extruding metal chips or filings into a bar stock. The extruding machine uses graphite lubrication, and an oversized wooden (or other compressible material) plug for the initial compaction. The face of the ram contains undulations therein so the ends of adjacent charges will be better held together.

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