EP0503824A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Apparatus for mixing and dispensing a multicomponent composition
Assignee: Dow Silicones Belgium SPRL
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Filing: 1992-03-04
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Granted: —
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Expires: 2012-03-04
Abstract
Abstract The apparatus is adapted to be held in one hand of an operator for mixing components of a composition packaged as two or more individually stable components of substantially equal volume and viscosity each in a receptacle having a closure made of a material which can be ruptured, and to dispense the mixed composition by a manual operation. The device comprises a mixing housing, separate chambers for the receptacles, piercing means for piercing the receptacles, plunger means for expelling a component from the chamber into the mixing region, a mixing element in the mixing region, and a passageway which contains means for actuating the mixing element and through which the mixed composition may be expelled from the mixing region. The construction and arrangement is such that relative movement of approach may be caused between the piercing means and the receptacles to rupture the receptacles, and between the plunger means and the mixing housing to urge the component into the mixing region, the mixing element may be actuated to mix the components in the mixing region, and relative movement of approach may be brought about between elements of the device to discharge the mixed composition through said passageway. The device is principally intended for mixing and dispensing of silicone foam to provide foamed dressings.
Inventors
- 👤 Philippe Louis Bouquet
- 👤 David Pocknell
- 👤 Werner Bruning
- 👤 Martina Dittrich-Duster
- 👤 Gunter Lamers
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-30 21:26
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/02; A; A61; A61C; A61C5/00; A61C5/60; A61C5/62; A61C5/64; A61C9/00; A61C9/0026; A61L; A61L26/00; A61L26/0009; A61L26/0019; A61L26/0061; A61L26/0085; B; B65; B65D; B65D81/00; B65D81/32; B65D81/325; C08L; C08L83/00; C08L83/04; C08J2383/00; C08J2383/04
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
296 words
A mixing and dispensing device adapted to be held in one hand of an operator for mixing together the components of a silicone composition packaged in the form of two or more individually stable components of substantially equal volume and viscosity each in a receptacle, and to dispense the mixed composition by a manual operation, the device comprising a mixing housing in which there is a mixing region into which the components of the multi-component composition may be introduced and mixed together, separate chambers each comprising one of said receptacles or forming a receptacle having a closure made of a material which can be ruptured, each chamber communicating with the mixing region, piercing means which is arranged so that when it is desired to release a component from its receptacle the piercing means may be caused to pierce the receptacle, plunger means for expelling a component from the chamber by forcing it into the mixing region, a mixing element located in the mixing region for mixing the components of the composition, and a passageway which contains means for actuating the mixing element and through which the mixed composition may be expelled from the mixing region, the construction and arrangement being such that when it is desired to mix and dispense the composition relative movement of approach may be caused between the piercing means and the receptacles to bring about rupture of the receptacles, relative movement of approach may be brought about between the plunger means and the mixing housing to urge the component into the mixing region, the mixing element may be actuated to mix the components in the mixing region, and relative movement of approach may be brought about between elements of the device to discharge the mixed composition from the device through said passageway.
Claim 2
Dependent Claim
59 words
A device according to Claim 1 wherein the chamber support comprises two cylindrical chambers the axes of which are parallel and located at either side of, and parallel to, a centre line of the chamber support and the plunger means comprises two plungers which are rigidly connected together and which are mounted for simultaneous sliding movement within the chambers.
Claim 3
Dependent Claim
293 words
A device according to Claim 1 comprising, a) a mixing housing comprising a base having an interior surface and a wall having an interior wall surface; b) a chamber support providing parallel chambers, one for each component of a multi-component composition, the chamber support having a base and a wall, each having an exterior surface, the chamber support being slidable in the housing and the exterior surface of the base of the chamber support and the interior surfaces of the housing base and housing wall being such that together they define a mixing region into which the components of the multi-component composition may be introduced and mixed together, each chamber comprising a wall extending from an interior surface of the base of the chamber support and the chamber wall having an interior surface and each chamber communicating with the mixing region via a port in the base of the chamber support; c) piercing means which is arranged so that when it is desired to release a component from a receptacle in the device the piercing means may be caused to pierce the receptacle; d) plunger means slidably engaged with the interior wall surface of each chamber suitable for expelling a component from the chamber into the mixing region e) a perforate mixing element located in the mixing region; f) means for causing movement of the mixing element in the mixing region for mixing the components of the composition, and g) a passageway located between the chambers and communicating with the mixing region at one end and providing a nozzle at its other end so that the mixed composition may be expelled from the mixing region via the passageway upon bringing about relative movement of approach between the mixing housing and the chamber support.
Claim 4
Dependent Claim
30 words
A device according to Claim 3 wherein the means for piercing a receptacle is arranged so that the part of the receptacle which is cut remains attached to the receptacle.
Claim 5
Dependent Claim
231 words
A device according to Claim 1 comprising a) a mixing housing comprising a base having an interior surface and a wall having an interior wall surface; b) a chamber support having parallel chambers, one for each component of the multi-component composition, the chamber support being fixed to the wall of the mixing housing, such that together they define a mixing region into which the components of a multi-component composition may be introduced and mixed together, each chamber communicating with the mixing region via a port in the chamber support; c) a perforate mixing element located in the mixing region; d) piercing means which is arranged so that when it is desired to release a component from a chamber the piercing means may be caused to pierce a retaining surface to release the component from the chamber; e) plunger means slidably engaged with the interior wall surface of each chamber suitable for expelling a component from the chamber into the mixing region; f) a passageway communicating with the mixing region at one end and providing a nozzle at its other end so that the mixed composition may be expelled from the mixing region via the passageway upon bringing about relative movement of approach between the mixing housing and the chamber support, and g) means for causing movement of the mixing element in the mixing region for mixing the components of the composition.
Claim 6
Dependent Claim
13 words
The use of a device according to Claim 1 to form medical dressings.
References Cited (Backward Citations)
No citation records indexed.
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