Patent · US Active

Multi-piece piston for a cold chamber casting machine

US8136574B2 · kind B2 · utility

3Cited by

6References

17Claims

0Family size

Assignee

Allper AG · CH

Inventors

Andre Muller · Wuppertal, DE
Frederic Muller · Rossens, CH

Key dates

Filing date	Oct 11, 2006
Grant date	Mar 20, 2012
Priority date	—
Expiry date	Jul 21, 2028

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB22D17/2038
WIPO fieldMaterials, metallurgy
WIPO sectorChemistry

Abstract

A multi-piece piston (1) is disclosed, for fixing to the high pressure side end (3) of a piston rod (5) running axially in a casting cylinder (7) of a cold chamber casting machine. The piston comprises a piston crown (9) forming a piston front face (13) on the high pressure side and a piston body (15) in the form of a bush connected to the piston crown (9) on the low pressure side. The piston body (15) can be connected to the piston crown (9) by means of fixing screws (23) to form a module. Complementary bayonet looking means (25, 27) are provided, for axial fixing of the piston (1) to the end (3) of the piston rod (5), on the piston crown (9) and the end (3).

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