The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 26, 2013
Filed:
Aug. 04, 2009
Gottfried Raab, Perg, AT;
Markus Raup, Attnang-Puchheim, AT;
Josef Klammer, Garsten, AT;
Roland Kirchberger, Graz, AT;
Michael Lang, Graz, AT;
Gottfried Raab, Perg, AT;
Markus Raup, Attnang-Puchheim, AT;
Josef Klammer, Garsten, AT;
Roland Kirchberger, Graz, AT;
Michael Lang, Graz, AT;
MAN Nutzfahrzeuge Oesterreich AG, Steyr, AT;
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.