ES286522U - Master key (Machine-translation by Google Translate, not legally binding) - Google Patents

Abstract

Master key that being applicable to classic locks of doubly accessible bulbs between whose two halves is established a cam assisted by two clutch parts capable of selectively coupling, through a radial lug, to one of two notches operatively practiced in an internal perimeter partition of the cam and in diametral opposition, of panera that said, pair of cams is displaced longitudinally by the introduction of a key also conventional resulting in the cam operating next to said key and inoperative the opposite cam, and having as purpose to allow the opening of the lock when a conventional key is engaged in it and slightly rotated, blocking the pair of clutch parts, is essentially characterized by, from an arm carrying reliefs coinciding with those of a normal key and determined by the actual structuring of the bulb, presents a slight shortening in the length of dic ho arm, so that said key is able to fully penetrate the bulb, to a limit situation in which approaches the clutch parts, but without affecting the latter, whatever their position, having provided that said key incorporates a retractable stem, against the tension of a spring, disposed eccentrically and in a confrontational situation, in a certain position of the key, to one of the grooves or necklines of the cam, specifically to that not occupied by the lugs of the lugs. Clutch parts, all in such a way that when this key is inserted and the stem impinges on the clutch parts, it retracts allowing the full penetration of the key and, when the latter rotates properly and faces the aforementioned slot, it is projected axially, staying in it and establishing the link between key and cam, which allows the latter to actuate. (Machine-translation by Google Translate, not legally binding)