Back to results
US 6,546,993 B1Granted
Method for producing a box piston
AssigneeMahle GmbH
InventorPeter Tilch
Life of this patent
Estimating the term…
Abstract
The invention relates to a casting method for producing a box piston which comprises recesses between the hub support and the ring band. The invention aims to further reduce the weight of the piston. The casting cores which produce the recesses can therefore be pivoted during stripping.
Claims4
A method for producing a box piston (1) comprising an upper, about circular-cylindrical area for receiving at least two ring grooves, and a lower area containing hubs, the hubs being recessed in a direction of an axis of a gudgeon toward a longitudinal axis of the piston, and comprising recesses (7), the recesses
- being present in a peripheral direction at least in a zone in front of the hubs;
- and disposed
- in an axial direction at a level of the circular-cylindrical area and
- in a radial direction between a hub support and the circular-cylindrical area
- characterized in that the recesses (7) are produced by casting cores (6) pivoting during stripping.
2 more elements
Dependencies are inferred from the claim text.