Device for storing hydraulic fluid

A device (8) for storing hydraulic fluid of a hydraulic system (6) of a transmission device, the device (8) comprising:

• at least one storage chamber (21) being delimited by a housing assembly (19) and a delimiting device (20) and being functionally connectable with the hydraulic system (6) for an exchange of hydraulic fluid,
• a volume of the storage chamber (21) being variable between a minimum volume and a maximum volume as a function of an operating condition of the at least one of the delimiting device (20) and the housing assembly (19),
• at least one of the delimiting device (20) and the housing assembly (19) being detainable, by a holding device (26), in an operating condition equivalent to a defined value of the volume of the storage chamber (21) in opposition to a restoring effort of the at least one of the housing assembly (19),
• the delimiting device (20), starting from an operating condition which differs from the operating condition equivalent to the minimum volume of the storage chamber (21), in a direction toward an operating condition equivalent to the minimum volume of the storage chamber (21),
• the operating conditions of at least one of the delimiting device (20) and the housing assembly (19), when the holding device (26) is activated, varying as a function of a pressure in the hydraulic system (6) and of their restoring efforts, respectively within an operating condition range between two limiting operating conditions in which the volume of the storage chamber (21) is either a maximum, or corresponds to the defined value of the volume of the storage chamber (21).