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Priority to ES1971166287UpriorityCriticalpatent/ES166287Y/en
Publication of ES166287UpublicationCriticalpatent/ES166287U/en
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Publication of ES166287YpublicationCriticalpatent/ES166287Y/en
Improved return hinge, essentially characterized in that its return device is constituted by two rotation axes fixed to one of the hinge parts, on which the second hinge part is articulated with interposition of friction bearings and with the help of elements of retaining, the latter being in one case a simple key and in the other case an expansion spring, one end of which penetrates a notch made in the axis of rotation while the other end rests and anchors on the other part of the shaft. Hinge exerting on it its expanding action, action ensured by the mechanical immobilization on its housing of the axis of rotation that retains by one of its ends to the expansion spring and serves as a guide. (Machine-translation by Google Translate, not legally binding)