Dispenser drain attachment for flowable media
AssigneeCreatechnic AG
InventorThomas Weber
Life of this patent
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Abstract
A dispenser drain attachment includes a threaded cap having a tapered drain socket and an associated drain tube. The interior of the drain tube has a double diaphragm which seals the drain tube, as well as an elastic gas bellows for dispensing liquid portions by alternating deformation of the diaphragm disks of the double diaphragm, which acts as a one-way valve. Such deformation is the result of pressure conditions which change when the gas bellows is compressed and then again released. The dispenser drain attachment is assembled from only two one-piece structural parts, each of which is produced by a two-component injection molding procedure.
Claims22
A dispenser drain attachments comprising:
- a first one-piece structural part forming a threaded cap with a tapering drain socket, said first one-piece structural part being made of a material moldable in an injection-molding procedure;
- a second one-piece structural part forming a drain tube having a double diaphragm for sealing said drain tube, said double diaphragm being located within said drain tube and having deformable diaphragm disks, said second one-piece structural part further including elastic gas bellows for dispensing a flowable media by alternately deforming said deformable diaphragm disks of said double diaphragm, said elastic gas bellows acting as one-way valves as a result of changed pressure conditions occurring when said elastic gas bellows is deformed via compression and release, said second one-piece structural part being made of a material moldable in an injection-molding procedure;
- and,
- means for attaching said first one-piece structural part to said second one-piece structural part, said means for attaching being formed as an integral part of at least one of said first one-piece structural part or said second one-piece structural part;
- said dispenser drain attachment consisting of said first one-piece structural part and said second one-piece structural part with each of said one-piece structural parts made via two-component injection molding.
A method for manufacturing a dispenser drain attachment, said dispenser drain attachment including:
- a first one-piece structural part forming a threaded cap with a tapering drain socket, said first one-piece structural part being made of a material moldable in an injection-mold-ing procedure;
- a second one-piece structural part forming a drain tube having a double diaphragm for sealing said drain tube, said double diaphragm being located within said drain tube and having deformable diaphragm disks, said second one-piece structural part further including elastic gas bellows for dispensing a flowable media by alternately deforming said deformable diaphragm disks of said double diaphragm, said elastic gas bellows acting as one-way valves as a result of changed pressure conditions occurring when said elastic gas bellows is deformed via compression and release, said second one-piece structural part being made of a material moldable in an injection-molding procedure;
- and,
- means for attaching said first one-piece structural part to said second one-piece structural part, said means for attaching being formed as an integral part of at least one of said first one-piece structural part or said second one-piece structural part, said method comprising the steps of:
- (a) a two-component injection-molding procedure for making said first one-piece structural part;
- (b) a two-component injection-molding procedure for making said second one-piece structural part;
- and,
- (c) attaching said first one-piece structural part to said second one-piece structural part to complete manufacture of said dispenser drain attachment.
Dependencies are inferred from the claim text.