US 2003/0155766 A1Published application

Coupling for connecting hydraulic ducts

AssigneesWalterscheid Rohrverbindungstechnik GmbH, STILL GmbH

InventorsDiethard Wolf, Jorg Altenrath, Recep Macit

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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).

Claims26

Dependent claims

A coupling for connecting hydraulic ducts, comprising:

a first coupling element being a female coupling, said first coupling element having a receptacle and forming a first locking face arranged around a longitudinal axis of the coupling;
a second coupling element being a male coupling, said second coupling forming a second locking face arranged around the longitudinal axis, and said second coupling element insertable in the direction of the longitudinal axis through an opening into the receptacle of the first coupling element;
a holding element having a ring and having several spring elements formed on the ring and extending parallel to the longitudinal axis;
and
locking elements formed onto the free ends of the spring elements;
said spring elements being, respectively, elastically deformable against a spring force radially out of a locking position into a releasing position;
and
in a connected condition of the coupling elements the first locking face and the second locking face facing one another and the locking elements being supported in the locking position of the spring elements on one side by the first locking face and on another side by the second locking face.

5 more elements

Dependencies are inferred from the claim text.