Patent · US Active

Reciprocating expansion engine and piston of a reciprocating expansion engine

US8381524B2 · kind B2 · utility

0Cited by

31References

19Claims

0Family size

Assignee

Man Nutzfahrzeuge Oesterreich AG · AT

Inventors

Gottfried Raab · Ansfelden, AT
Markus Raup · Attnang-Puchheim, AT
Josef Klammer · Steyr, AT
Roland Kirchberger · Graz, AT
Michael Lang · Graz, AT

Key dates

Filing date	Aug 4, 2009
Grant date	Feb 26, 2013
Priority date	—
Expiry date	Aug 11, 2031

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02T10/12
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

A piston and a reciprocating expansion engine with a piston having a piston head, a piston neck, and a piston shaft are described. The piston head has at least one groove which runs in a circumferential direction suitable for receiving a piston ring, and the piston shaft has a pin boss and, at its outer circumference, a guide surface which is suitable for guiding the piston along a cylinder inner wall. An outer diameter of the piston neck is smaller than an outer diameter of the piston head and/or of the piston shaft, and the length of the piston neck approximately corresponds to the travel of the piston in the installed state.

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