Abstract: This watch case includes a caseband (1) and a fitting frame (2) inserted into said caseband. The frame includes a first seat (14) in which a bezel (4) rests, said bezel compressing the elastic material (15) forming the frame against the caseband, a second seat (16) in which a dial (7) is inserted, a third seat (18) in which a bead (19) provided on the movement rests, and a fourth seat (20) in which a flange (21) exhibited by the back cover (3) is inserted, such flange compressing the material forming the frame against the caseband. The watch case is sealed and lends itself particularly well to assembly on automated machinery.

Abstract: A timepiece including a ring (6) which assures a quadruple function: that of a water-tight packing between the crystal (1) and the ring; that of securing the caseband (3) to the ring; that of a casing ring for the movement (5) and finally that of securing the back cover to the ring. To this effect the caseband exhibits a cylindrical internal wall (4) entirely overlaid by the ring, said ring exhibiting a first accommodation (8) in which the crystal is engaged, a second accommodation (10) in which the movement is engaged and a lower zone (11) including means (18, 19) for securing the back cover.

Abstract: The watch case of this invention includes a caseband (2) made from sintered material and a back cover (10) secured to the caseband by means of at least two pins (12). Each pin passes through a first hole (14) provided in a first projection (16) formed in the caseband and two second holes (13, 15) provided respectively in two second projections (17, 18) formed in the back cover, said second projections being arranged respectively on either side of said first projection. Each pin being axially retained in its holes by the elastic effect provided by the seal when the caseband lies on the back cover.

Abstract: The watch case of this invention includes a caseband (1) hollowed out in the form of a vault (10). Such caseband includes first (5) and second (6) cylindrical support surfaces cooperating respectively with a crystal (2) and a back cover (3). Three blocks (7), unitary with the caseband, are arranged within the hollowed-out vaultlike space. Each block bears a projection (11) extending towards the movement (17) borne by the case, said projection having an upper snap (12) on which rests a flange (15) supporting the crystal and a lower snap (13) on which rests a casing ring (16) on which the back cover bears.

Abstract: The clasp of this invention include a first element (1) bearing a hook (4) and a second element (6) under which is arranged a catch (9). The second element is provided with an opening (8) giving access to two identical holes (11, 17) arranged side by side in the longitudinal direction of the bracelet. The hook may be latched as desired by the first (11) or the second (17) hole is accordance with whether one wishes the bracelet to be tight or looser around the wrist. In closed position the beak (5) of the hook will be located under the catch. In order to open the clasp one presses the push button (10) which forms an integral part of the catch. Such clasp may be employed for a wrist watch.

Abstract: A watch case comprises a frame (5), a crystal (6) that may be welded or glued to the frame, and a base (13) that is fastened removably to the frame. The underside of the frame contains an undercut (16) that is covered by the base and that is shaped like the band end (2) which is inserted therein. The base includes at least one projection (17) shaped so as to pass through a matching opening (18) provided in the end of the band.

Abstract: This bracelet comprises a succession of elements linked together by means of hinges, each element including a median knuckle on one side and two end knuckles on the opposite side between which the median knuckle of the neighbouring element fits. Both median and end knuckles are integrally formed with the element to which they belong. Each is sheathed with a jacket for decorative purposes.

Abstract: The bracelet of the invention comprises a plurality of elements articulated one after another. One of these elements supports a timepiece and the others form the links of the bracelet.The elements are fitted into one another end-to-end and held together by means of two non-extensible flexible ties passing via channels formed in each of the elements and situated on either side of the longitudinal axis of the bracelet. The bracelet further includes at each extremity thereof a terminal piece provided with means for fixing the flexible ties.The elements may be formed from a synthetic material reinforced with carbon fibres and the ties from a synthetic material impregnated with graphite.

Abstract: A wrist-watch case includes a back that is screwed onto a spacer ring and an assembly of two caps and a crystal that forms one piece attached to the case-band by screws fastened into the caps from the underside of the case-band. This construction makes it possible to integrate a bracelet perfectly with the case through the caps, each cap forming an end link having the same appearance as the articulated links of the bracelet and adjoining the beveled edge of the crystal. This construction is particularly well adapted to the use of caps and links made entirely of hard metal.

Abstract: A leak resistant watch casing is designed to accomodate a thin movement. It comprises a casing ring (7) supporting the movement (5) around which an elastic binding (10) is removably mounted. The binding is of rectangular cross section with the smaller sides of the rectangle being pressed against the case-band (1) and the back cover (11) when these elements are secured together. The binding includes an orifice (17) situated proximate two U-formed openings provided in the periphery of the case-band and back cover in order to accomodate the stem (15) of a control element.

Abstract: A watch-case comprises, superposed onto the case-band (1), a sealing gasket (4), a ring forming a flange (2) and a watch-glass (3).The thus-formed assembly is fixed to the case-band by means of claws (10) which grip the watch-glass and which are arranged on the periphery of the case-band. The claws are provided with an internally threaded portion (11) which fits into an opening (7) provided on the periphery of the watch-glass and which receives a screw (12) the head of which is supported by a cut-out provided on the underside of the case-band.

Abstract: The invention concerns a miniature pushbutton for a timepiece and includes head portion (1) associated with a socket (2) force fitted into a caseband (15). Considered in isolation it constitutes a dormant corrector since it lacks a return spring thus permitting a considerable reduction in its dimensions. The head portion including stem is fashioned in a manner to permit assembly and disassembly from the timepiece exterior thus facilitating these operations. A retention system is provided which prevents inadvertent separation of the head-stem portion from the socket. Such pushbutton may be advantageously employed in extra thin timepieces.