Patent · US Expired

Cast light metal piston for a two-stroke engine

US5979391A · kind A · utility

7Cited by

9References

1Claims

0Family size

Assignee

Mahle GmbH · DE

Inventors

Reiner Ulrich · Rutesheim, DE
Joachim Schmidt · Schlangen, DE
Udo Buschkamp · Eschborn, DE

Key dates

Filing date	Mar 31, 1998
Grant date	Nov 9, 1999
Priority date	—
Expiry date	Mar 31, 2018

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF02B2075/025
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

A cast light metal piston of box-type construction for a two-stroke engine, comprising a piston blank having a gudgeon pin boss molded on a bottom section of the piston blank and a piston shaft having an open end and being connected to the gudgeon pin boss via approximately straight wall sections. There is only one lug disposed on only one side of the piston shaft. The wall section connecting the piston shaft with the gudgeon pin boss near the lug has a window-like recess. The wall section connecting the piston shaft with the gudgeon pin boss remote from the lug is closed and is raised upwardly with respect to the length of the shaft beginning from the open end of the shaft.

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