Patent · US Expired

Extrusion

US4601325A · kind A · utility

11Cited by

2References

6Claims

0Family size

Assignee

Alform Alloys Limited · GB

Inventor

Brian Maddock · Dorchester, GB

Key dates

Filing date	Nov 21, 1983
Grant date	Jul 22, 1986
Priority date	—
Expiry date	Nov 21, 2003

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB21C33/02
WIPO fieldMachine tools
WIPO sectorMechanical engineering

Abstract

Extrusion apparatus comprises a rotatable wheel having an endless groove in its periphery, a fixed structure which covers part of the groove to define a passageway, a blocking member projecting into the groove to close off one end of the passageway and a die orifice leading from the closed off passageway adjacent the blocking member. The metal which is introduced into the passageway at the position away from the blocking member is in molten form and means are provided for fluid cooling at least that part of the wall of the passageway which is not defined by the fixed structure so as to solidify molten metal introduced into the passageway.

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