Safety knob

Abstract

Rotary knob or handle 1 for opening and/or closing doors, gates or windows, comprising a first part 2 designed to operate a closing mechanism by rotation around a rotation axis X, a second part 3 which is rotatable around substantially the same axis X, a connecting part 5, which is coupled to said second part 3 in rotation around said axis X. The connecting part 5 is movable with respect to the first part 2 along said axis X, between a first position and a second position. In said first position of the connecting part 5, the connecting part 5, and with it the second part 3, are substantially freely rotatable around said axis X with respect to said first part 2. In said second position of the connecting part 5, the connecting part 5 and the second part 3 are rotationally coupled by a dog clutch to said first part 2. The rotary knob or handle 1 is provided with several push buttons 4 on said second part 3, arranged at an angle with respect to said rotation axis X. Any one of said at least two push buttons, when pushed, displaces said connecting part 5 from said first position towards said second position, closing the dog clutch and enabling the operation of the closing mechanism through rotation of the second part 3.

Dependencies are inferred from the claim text.