Patent ID: 6112565
Filing Date: 2000-09-05
Classification: E05B,Y10T

Abstract:
Combination cylinder that can be extracted from the outside for a latch, particularly for a latch (1) driven by a transverse shaft (2) that can be placed in rotation from a leg piece placed inside the door or from a combination cylinder (3) installed outside said door, whose cylinder (3) is mounted by axial sliding from behind in a support (4) that is in turn mounted in a static body (5) fastened to said door, said static body (5) having an internal wall having a reciprocal radial slot (7), said latch having an initial position, said combination cylinder comprising: said support (4) having a radial catch piece (6) that is elastically retractable and capable of adopting several retracted and extended positions, which, with respect to the state of mounting of said support (4), are respectively outside and inside said reciprocal radial slot (7) of said internal wall of said static body (5); a lift-bar (8) of transverse plane to said cylinder (3), a counter-spring push-button (9) parallel to said cylinder (3), one each first (10) and second (11) openings that are fastened in permanent axial alignment with said push-button (9) and that are respectively made in the back and in a front escutcheon (12) of said support (4), and a radial projection (13) formed in a clip-washer (14); wherein, with respect to the mounting state of said support (4), said lift-bar (8) has a first arm (8a) assembled in articulation with said retractable catch piece (6), a second arm (8b), said second arm (8b) having an end adjacent to a first rotary path of said radial projection (13) upon rotating said cylinder (3) in counterclockwise direction from said initial position of said latch (1), and, between said first (8a) and second (8b) arms, said lift-bar (8) has a front-back sunken hole (8c) that is out of alignment with said first (10) and second (11) openings in the direction of a greater relative separation with respect to said radial projection (13) and in a manner and means such that the wall of said sunken hole (8c) remains opposite and appreciably parallel with respect to the side of a conical point (9a) of a said counter-spring push-button (9) that has a head (9b) adjacent to said second opening (11); and said support (4) holding a pair of claws (15) diametrically opposed that are overlapped by rotating between reciprocal sockets (16) of said static body (5) by means of a second counter-clockwise rotating path effected by the assembly of said cylinder (3) and support (4) immediately for continuation of said first rotary path.