A timepiece and a tool to separate a back from a middle, which jointly delimit a watch case of this timepiece, inside which a horological movement is housed, this tool having the appearance of a wedge, i.e. an acute-shaped part formed by a first face and a second face which intersect at an angle of less than 90° and which are connected to one another by a rounded portion, the first face of the tool being oriented such that it extends parallel to a mean plane wherein the horological movement is located when an horologist engages this tool between the back and the middle in order to separate this back from this middle, the rounded portion being connected to the second face by a curved portion, the curvature whereof is directed towards the inside of a surface delimited by the first and second faces.

A timepiece and a tool to separate a back from a middle, which jointly delimit a watch case of this timepiece, inside which a horological movement is housed, this tool having the appearance of a wedge, i.e. an acute-shaped part formed by a first face and a second face which intersect at an angle of less than 90° and which are connected to one another by a rounded portion, the first face of the tool being oriented such that it extends parallel to a mean plane wherein the horological movement is located when an horologist engages this tool between the back and the middle in order to separate this back from this middle, the rounded portion being connected to the second face by a curved portion, the curvature whereof is directed towards the inside of a surface delimited by the first and second faces.

A disassembly bench is for unlocking and disassembling a first component and a second component of a watch with secured fastening including handling devices to transmit a relative disassembly movement between this first component and this second component. The bench also includes centrifuging devices and/or pneumatic or hydraulic devices for simultaneous application of a centrifugal force and/or an overpressure or an underpressure to such a watch to press into a position of free passage one or more slides arranged to immobilize this first component and this second component in a locked position. A watchmaking set includes such a disassembly bench and such a watch with secured fastening.

A disassembly bench is for unlocking and disassembling a first component and a second component of a watch with secured fastening including handling devices to transmit a relative disassembly movement between this first component and this second component. The bench also includes centrifuging devices and/or pneumatic or hydraulic devices for simultaneous application of a centrifugal force and/or an overpressure or an underpressure to such a watch to press into a position of free passage one or more slides arranged to immobilize this first component and this second component in a locked position. A watchmaking set includes such a disassembly bench and such a watch with secured fastening.

A device for opening a watch case including a back fixed to a middle by interlocking, including a fitting fixed to a frame and intended to hold a watch case in position, at least one carriage movable in translation relative to the frame in a direction X, the carriage including a tool holder to which a knife is fixed, the device further includes a control element designed to be actuated by a user, kinematically connected to the carriage with a transmission member configured so that when the control element is actuated, the carriage is translated towards the fitting or in a direction opposite to the fitting.

A device for opening a watch case including a back fixed to a middle by interlocking, including a fitting fixed to a frame and intended to hold a watch case in position, at least one carriage movable in translation relative to the frame in a direction X, the carriage including a tool holder to which a knife is fixed, the device further includes a control element designed to be actuated by a user, kinematically connected to the carriage with a transmission member configured so that when the control element is actuated, the carriage is translated towards the fitting or in a direction opposite to the fitting.

A portable apparatus component fixation structure which helps to secure the positioning accuracy for a second member (a mounted member) and which makes it possible to easily mount the second member is to be provided. A fixation structure is equipped with a fixation portion provided on a main plate and a regulating portion formed on a display plate. The fixation portion has a first pin and a second pin. The second pin has an inclined surface. The inclined surface is a surface generating a pressing force toward the regulating portion as the display plate approaches the main plate. Locking is effected in a state in which the regulating portion is held between the first pin and the second pin.

A portable apparatus component fixation structure which helps to secure the positioning accuracy for a second member (a mounted member) and which makes it possible to easily mount the second member is to be provided. A fixation structure is equipped with a fixation portion provided on a main plate and a regulating portion formed on a display plate. The fixation portion has a first pin and a second pin. The second pin has an inclined surface. The inclined surface is a surface generating a pressing force toward the regulating portion as the display plate approaches the main plate. Locking is effected in a state in which the regulating portion is held between the first pin and the second pin.

Disassembly bench for unlocking and disassembling a first component and a second component of a watch with secured fastening comprising handling devices to transmit a relative disassembly movement between this first component and this second component, and comprising centrifuging devices and/or pneumatic or hydraulic devices for simultaneous application of a centrifugal force and/or an overpressure or an underpressure to such a watch to press into a position of free passage one or more slides arranged to immobilise this first component and this second component in a locked position.

Watchmaking set comprising such a disassembly bench and such a watch with secured fastening.

A timepiece and a tool to separate a back from a middle, which jointly delimit a watch case of this timepiece, inside which a horological movement is housed, this tool having the appearance of a wedge, i.e. an acute-shaped part formed by a first face and a second face which intersect at an angle of less than 90 and which are connected to one another by a rounded portion, the first face of the tool being oriented such that it extends parallel to a mean plane wherein the horological movement is located when an horologist engages this tool between the back and the middle in order to separate this back from this middle, the rounded portion being connected to the second face by a curved portion, the curvature whereof is directed towards the inside of a surface delimited by the first and second faces.