Piston for hydraulic actuating cylinders

US5836235A · kind A · utility

Assignee

• Fahrzeugtechnik Ebern GmbH · DE

Inventors

• Eckhart Rudiger · Ebern, DE
• Herbert Sauer · Frechen, DE

Key dates

• Filing date: Mar 27, 1997
• Grant date: Nov 17, 1998
• Expiry date: Mar 27, 2017

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16D2025/081
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

In order to reduce the weight and manufacturing cost of a piston for a hydraulic actuating cylinder, the piston, the piston rod and the external reinforcement cap are combined to form a unitary integral part. The unitary part is advantageously a single extrusion product. The piston is shaped so as to be able both to slide along the length of the inner cylinder wall, and to tilt upon deflection or lateral displacement of the piston rod in the bore of the cylinder, while still maintaining its hydraulic seal.