Patent · US Expired

Constructed piston or piston consisting of components that are welded or soldered together

US6467397B1 · kind B1 · utility

19Cited by

4References

2Claims

0Family size

Assignee

Mahle GmbH · DE

Inventors

Reinhold Fuchs · Fellbach, DE
Dietmar Zaiser · Fellbach, DE

Key dates

Filing date	Jul 19, 2001
Grant date	Oct 22, 2002
Priority date	—
Expiry date	Jul 19, 2021

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF05C2201/0448
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

A constructed piston 1 is comprised of an upper part 2 produced from forged steel, and a bottom part 3, said parts being joined with the expansion screws 4. The bottom part 3 consists of a forged part 6 produced from steel, with the bosses 7 and an approximately tubular shaft extension 5 consisting of an iron material, said extension being joined with the part 6 by welding. In the lower zone of the shaft extension 5, the latter has a collar 8 that can be worked for the purpose of adjusting a piston weight within the tolerance range.

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