Fluid dispenser

A fluid dispensing device, comprising:

• a deformable chamber whose interior volume is arranged to contain a fluid, said chamber being provided with an inlet so that the dispensing device is arranged to conduct a fluid along a circulation path of fluid from the inlet then through the deformable chamber and to an outlet;
• a part called pressing part arranged to be movable so as to modify this interior volume;
• and
• a dispensing valve which, in an open state, allows a passage of fluid from the interior of the deformable chamber towards outside of the dispensing device through the outlet of the deformable chamber and, in a closed state, does not allow it, wherein
• the dispensing valve comprises a pin and a movable member,
• the pin having an end which:
• in the closed state of the dispensing valve, closes the outlet of the deformable chamber, and
• in the open state of the dispensing valve, deviates from the outlet of the deformable chamber,
• the inlet is provided with a feed valve which, in an open state, allows a passage of fluid from a reservoir to the deformable chamber, and, in a closed state does not allow it,
• the movable member being arranged to move under the effect of a decrease of the interior volume of the deformable chamber or an overpressure from the fluid in the interior volume of the deformable chamber above a certain threshold so as to move the pin away from the outlet of the deformable chamber so as to move the dispensing valve from its closed state to its open state, and
• the movable member comprising at least one movable wall of at least one gas pocket,
• wherein, the fluid dispensing device comprises at least one movable wall arranged to be in contact with the fluid and comprises a return means so to exert on the pin a return force so as to push the pin towards the outlet of the chamber so as to bring back the dispensing valve from its open position to its closed position.

A fluid dispensing device, comprising:

• a deformable chamber whose interior volume is arranged to contain a fluid, said chamber being provided with an inlet so that the dispensing device is arranged to conduct a fluid along a circulation path of fluid from the inlet then through the deformable chamber and to an outlet;
• a part called pressing part arranged to be movable so as to modify this interior volume;
• and
• a dispensing valve which, in an open state, allows a passage of fluid from the interior of the deformable chamber towards outside of the dispensing device through the outlet of the deformable chamber and, in a closed state, does not allow it, wherein
• the dispensing valve comprises a pin and a movable member,
• the pin having an end which:
• in the closed state of the dispensing valve, closes the outlet of the deformable chamber and
• in the open state of the dispensing valve, deviates from the outlet of the deformable chamber,
• the movable member being arranged to move under the effect of a decrease of the interior volume of the deformable chamber or an overpressure from the fluid in the interior volume of the deformable chamber above a certain threshold so as to move the pin away from the outlet of the deformable chamber so as to move the dispensing valve from its closed state to its open state,
• the inlet is provided with a feed valve which, in an open state, allows a passage of fluid from a reservoir to the deformable chamber, and, in a closed state does not allow it,
• the movable member comprising at least one movable wall of at least one gas pocket,
• wherein the outlet being delimited by a periphery comprising a part called flexible part;
• in the closed position of the dispensing valve, the end of the pin being in contact with the flexible part along a line of contact;
• and
• wherein the pin is more rigid than the flexible part of the outlet.

A fluid dispensing device, comprising:

• a deformable chamber whose interior volume is arranged to contain a fluid, said chamber being provided with an inlet so that the dispensing device is arranged to conduct a fluid along a circulation path of fluid from the inlet then through the deformable chamber and to an outlet;
• a part called pressing part arranged to be movable so as to modify this interior volume;
• and
• a dispensing valve which, in an open state, allows a passage of fluid from the interior of the deformable chamber towards outside of the dispensing device through the outlet of the deformable chamber and, in a closed state, does not allow it, wherein
• the dispensing valve comprises a pin and a movable member,
• the pin having an end which:
• in the closed state of the dispensing valve, closes the outlet of the deformable chamber, and
• in the open state of the dispensing valve, deviates from the outlet of the deformable chamber,
• the movable member being arranged to move under the effect of a decrease of the interior volume of the deformable chamber or an overpressure from the fluid in the interior volume of the deformable chamber above a certain threshold so as to move the pin away from the outlet of the deformable chamber so as to move the dispensing valve from its closed state to its open state,
• the inlet is provided with a feed valve which, in an open state, allows a passage of fluid from a reservoir to the deformable chamber, and, in a closed state does not allow it, and
• the movable member comprising at least one movable wall of at least one gas pocket,
• wherein the dispensing valve being part of a module that fits into the dispensing device from outside or inside the dispensing device and the module comprises a tank attached to the rest of the dispensing device.

A fluid dispensing device, comprising:

• a deformable chamber whose interior volume is arranged to contain a fluid, said chamber being provided with an inlet so that the dispensing device is arranged to conduct a fluid along a circulation path of fluid from the inlet then through the deformable chamber and to an outlet;
• a part called pressing part arranged to be movable so as to modify this interior volume;
• and
• a dispensing valve which, in an open state, allows a passage of fluid from the interior of the deformable chamber towards outside of the dispensing device through the outlet of the deformable chamber and, in a closed state, does not allow it, wherein
• the dispensing valve comprises a pin and a movable member,
• the pin having an end which:
• in the closed state of the dispensing valve, closes the outlet of the deformable chamber, and
• in the open state of the dispensing valve, deviates from the outlet of the deformable chamber,
• the movable member being arranged to move under the effect of a decrease of the interior volume of the deformable chamber or an overpressure from the fluid in the interior volume of the deformable chamber above a certain threshold so as to move the pin away from the outlet of the deformable chamber so as to move the dispensing valve from its closed state to its open state, and
• the movable member comprising at least one movable wall of at least one gas pocket,
• wherein, the fluid dispensing device further comprises at least one movable wall arranged to be in contact with the fluid and comprising a return means arranged to exert on the pin a return force so as to push the pin towards the outlet of the deformable chamber so as to return the dispensing valve from its open position to its closed position, the return means comprising the movable wall;
• and
• the movable wall of each gas pocket having a convex surface on a side of the fluid contained in the deformable chamber.

A fluid dispensing device, comprising:

• a deformable chamber whose interior volume is arranged to contain a fluid, said chamber being provided with an inlet so that the dispensing device is arranged to conduct a fluid along a circulation path of fluid from the inlet then through the deformable chamber and to an outlet;
• a part called pressing part arranged to be movable so as to modify this interior volume;
• and
• a dispensing valve which, in an open state, allows a passage of fluid from the interior of the deformable chamber towards outside of the dispensing device through the outlet of the deformable chamber and, in a closed state, does not allow it, wherein
• the dispensing valve comprises a pin and a movable member,
• the pin having an end which:
• in the closed state of the dispensing valve, closes the outlet of the deformable chamber and
• in the open state of the dispensing valve, deviates from the outlet of the deformable chamber,
• the movable member being arranged to move under the effect of a decrease of the interior volume of the deformable chamber or an overpressure from the fluid in the interior volume of the deformable chamber above a certain threshold so as to move the pin away from the outlet of the deformable chamber so as to move the dispensing valve from its closed state to its open state, and
• the movable member comprising at least one movable wall of at least one gas pocket,
• wherein each gas pocket is located in the deformable chamber.