Piston-type accumulator

US7395838B2 · kind B2 · utility

Assignee

• HYDAC TECHNOLOGY GMBH · DE

Inventors

• Norbert Weber · Pocking, DE
• Herbert Baltes · Losheim, DE

Key dates

• Filing date: Jan 22, 2004
• Grant date: Jul 8, 2008
• Expiry date: Aug 4, 2024

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F15B2201/312
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

A piston-type accumulator includes an accumulator housing provided in the form of a cylinder tube (1). A separating piston (15) separates two working spaces (5) and (6) from one another in the housing and can be displaced in an axial direction within a piston stroke area (19) of the cylinder tube (1). The cylindrical tube is closed at one axial end by a closure part (7). The closure part is defined by deforming a deforming area (9) of the wall of the cylinder tube (1). The deforming area adjoining the piston stroke area (19) is provided in the form of part that exists as a single piece with the housing. A stop body (25), which limits the movement of the separating piston (15) before reaching the deforming area (9), is provided inside the cylinder tube (1) at the location where the piston stroke area (19) transitions into the deforming area (9).