Dispensing device, storage device and method for dispensing a formulation
A dispensing device, a storage device and a method for dispensing a formulation as a spray using a gas stream. Doses of the formulation are contained in storage members, which comprise individual atomizing device. The storage members are received in cavities, which are sealed by a common outlet seal. The outlet seal is peeled individually for each cavity to open the respective storage member and its atomizing device before the respective dose is dispensed by a gas stream flowing through the storage member.
1. Dispensing device for dispensing a formulation as a spray, comprising:
a housing adapted to receive a storage device with multiple, separate and pre-metered doses of the formulation,
an annular storage device comprising multiple rigid storage members, each storage member comprising a storage chamber containing a dose of formulation, and an atomizing device for dispensing the respective dose from the storage chamber as spray in a radial direction, wherein outlet openings of the storage members or atomizing devices are covered by a common outlet seal that is disposed on the periphery, of the annular storage device,
means for pressurizing gas for generating a gas stream flowing through the storage device for dispensing a dose of the formulation,
a connecting element for supplying pressurizing gas or air individually to each of the storage chambers, the connecting element being moveable in a connecting movement relative to the respective storage member for connecting to it, and
an opening device for individually opening of each storage member, the opening device being adapted to work independently of the connecting movement to peel off the outlet seal from the annular storage device.
2. Dispensing device according to claim 1 , wherein the outlet seal is a strip which seals multiple or all outlet openings.
3. Dispensing device according to claim 1 , wherein the outlet seal is a heat-sealed foil.
4. Dispensing device according to claim 1 , wherein the opening device is adapted to wind up the peeled-off outlet seal.
5. Dispensing device according to claim 1 , wherein the opening device comprises a guide element for guiding the peeled-off outlet seal away from the storage members, the guide element being located adjacent to and biased against the storage members.
6. Dispensing device according to claim 1 , wherein the opening device comprises a wheel for winding up the peeled-off outlet sealing.
7. Dispensing device according to claim 6 , wherein the wheel is driven by or coupled with a transport movement mechanism indexing from one storage member to a next one.
8. Dispensing device according to claim 6 , wherein the wheel comprises variable diameter spring-like arms for winding up the peeled-off outlet sealing.
9. Dispensing device according to claim 1 , wherein the storage members are rotatable together with a carrier and wherein the opening device comprises a holding element holding a free end of the outlet seal and being mounted on a part that is counter-rotatable relative to the storage members.
10. Dispensing device according to claim 1 , wherein peeling off of the outlet seal drives the storage device to index from one storage member to the next one.
11. Dispensing device according to claim 1 , wherein the storage members are inserts received in separate cavities or receptacles of a rotatable carrier.