Piston for a compressor

US6925925B2 · kind B2 · utility

Assignee

• Daimlerchrysler AG · US

Inventors

• Roland Cäsar · Stuttgart, DE
• Jan Gärtner · Sindelfingen, DE
• Klaus Morgenthaler · Rupperswil, CH
• Gunnar Rausch · Wildberg, DE
• Jurgen Wertenbach · Fellbach, DE

Key dates

• Filing date: Aug 12, 2003
• Grant date: Aug 9, 2005
• Expiry date: Jan 22, 2024

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F04B27/0878
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

In a piston for a compressor, the piston comprises a stem by which the piston may be guided in the housing in an axially displaceable manner, and a force introducing section where an outer drive force can be introduced into the piston. The piston head, the piston skirt and the force introducing section are successively arranged in the direction of the piston axis. The piston head, the piston skirt and the force introducing section are produced as a single element of graphite or a synthetic material, and the piston skirt comprises a solid strut structure and a guide section, the cross-sectional area of the strut structure being smaller than the surface of the piston head. The piston consists of a non-organic, non-metallic material having an average thermal expansion of less than 7×106/° C. in the temperature range of 0° C. to 200° C.