Hydraulic cylinder

US5375507A · kind A · utility

Assignee

• Hoerbiger Ventilwerke GmbH · AT

Inventors

• Wolfgang Kladiwa · Huglfing, DE
• Gerhard Huber · Frankenhofen, DE
• Klaus Stolle · Schongau, DE
• Walter Kiefer · Seattle, US

Key dates

• Filing date: Sep 2, 1993
• Grant date: Dec 27, 1994
• Expiry date: Sep 2, 2013

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T29/4994
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

To connect the cylinder pipe (1) of a hydraulic cylinder to a bottom (6), and a cover (8), the bottom (6) and cover (8) have groove-shaped recesses (16, 17), into which are pressed the ends (5, 7) of the cylinder pipe (1) under permanent deformation. To enable pressurization at high operating pressures, the region (25) of the inner end of the non-deformed cylinder pipe (1) is defined as a holding region (18, 19) and has a turned groove (26) which, in the deformed state of the cylinder pipe (1), reaches over the related inner edge (27) of the groove-shaped recesses (16, 17) with respect to the longitudinal stretch of the cylinder pipe (1).