Coupling for connecting hydraulic ducts

US6983959B2 · kind B2 · utility

Assignees

• Walterscheid Rohrverbindungstechnik GmbH · DE
• STILL GmbH · DE

Inventors

• Diethard Wolf · Lohmar, DE
• Jörg Altenrath · Lohmar, DE
• Recep Macit · Mülheim an der Ruhr, DE

Key dates

• Filing date: Feb 17, 2003
• Grant date: Jan 10, 2006
• Expiry date: May 8, 2023

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16L37/0842
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

A coupling for connecting hydraulic ducts has a female coupling (1) with a receptacle and a first locking face arranged around a longitudinal axis. A male coupling (2) forms a second locking face, arranged around the longitudinal axis. The male coupling (2) can be inserted in the direction of the longitudinal axis (4) through an opening into the receptacle (3). A holding element (9) has a ring (10) with several spring elements projecting from the ring (10). The spring elements (11) extend parallel to the longitudinal axis (4). Locking elements (12) are formed on the free ends of the spring elements (11). The spring elements (11) are, respectively, elastically deformable against a spring force radially out of a locking position into a releasing position. In the inserted condition of the male coupling (2), the first locking face (15) and the second locking (16) face one another. Also, the locking elements (12) are supported in the locking position of the spring elements (11) on the first locking face (15) and on the second locking face (16).