Abstract: A timepiece includes: —a barrel bridge (33), and—a barrel mounted on the barrel bridge, the barrel having: —a drum (20) which includes an end wall and side walls, —an arbor (14) which passes through the center of the drum, —a leaf spring housed in the drum and engaging at a first end with the arbor and at a second end with the drum, and—a cover (28) through which the arbor passes freely and which closes the drum, —a ratchet wheel (30) secured to the arbor to tension the leaf spring. The drum is pivoted by a first ball bearing including an intermediate ring (36), an inner ring (42) secured to the arbor and an outer ring (38), one of the intermediate ring and the outer ring being fixed to the barrel bridge and the other being secured to the end wall.

Abstract: A timepiece includes:—a barrel bridge (33), and—a barrel mounted on the barrel bridge, the barrel having:—a drum (20) which includes an end wall and side walls,—an arbor (14) which passes through the centre of the drum,—a leaf spring housed in the drum and engaging at a first end with the arbor and at a second end with the drum, and—a cover (28) through which the arbor passes freely and which closes the drum,—a ratchet wheel (30) secured to the arbor to tension the leaf spring. The drum is pivoted by a first ball bearing including an intermediate ring (36), an inner ring (42) secured to the arbor and an outer ring (38), one of the intermediate ring and the outer ring being fixed to the barrel bridge and the other being secured to the end wall.

Abstract: A timepiece includes a platen (10) and a barrel mounted on the platen, the barrel including: a drum (20) with a bottom and side walls; a shaft (14) extending through the drum at the center thereof and provided with pivoting elements (40, 54) on the platen; a leaf spring provided in the drum and co-operating with the shaft at one end and with the drum at the other end; and a lid (28) through which the shaft extends and closing the drum, a ratchet wheel (30) being kinematically connected to the shaft for winding the spring. According to the invention, the drum is pivoted via a first ball bearing (34) having a bushing (36) connected to the platen and another bushing (38) connected to the bottom of the drum.

Abstract: A timepiece includes a platen (10) and a barrel mounted on the platen, the barrel including: a drum (20) with a bottom and side walls; a shaft (14) extending through the drum at the centre thereof and provided with pivoting elements (40, 54) on the platen; a leaf spring provided in the drum and co-operating with the shaft at one end and with the drum at the other end; and a lid (28) through which the shaft extends and closing the drum, a ratchet wheel (30) being kinematically connected to the shaft for winding the spring. According to the invention, the drum is pivoted via a first ball bearing (34) having a bushing (36) connected to the platen and another bushing (38) connected to the bottom of the drum.

Abstract: A diver's watch having a frame (22) and a case (10) containing a clockwork movement associated with time displaying means (15, 16). The case includes a middle (11), a base (12) and a rotating bezel (13). The case is hinge mounted on the frame (22), which is configured so as to define a housing wherein the case can be folded down to take up a position preventing its bezel from rotating and wherefrom it can be retrieved to allow its rotation.