Patent ID: 8539801

Claim:
A handle device for operating structures that may be opened and closed, comprising: a first element which is rotatable about an axis of rotation, a second element, and a coupling device which is connected to the first and the second element and is designed to at least one of selectively allow or prevent relative rotation about the axis of rotation between the first and the second element, wherein the coupling device further comprises: comprising an outer coupling member, and an inner coupling member, which is concentrically accommodated by the outer coupling member, rotatable about the axis of rotation, in the outer coupling member, characterized by at least one engaging member which is radially displaceable in the inner coupling member, and an activating member which is concentrically accommodated in the inner coupling member and axially displaceable therein, parallel to the axis of rotation, wherein the at least one engaging member and the activating member having interacting contact surfaces in order, during axial displacement of the activating member, to press the engaging member into a radially outwardly projecting position for simultaneous engagement with the inner and outer coupling member.