Patent US3907106A successfully refreshed from Google Patents.
US3907106A
Expired / Lapsed
US
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Compounding vessel
Assignee: Thera Patent GmbH and Co KG Gesellschaft fuer Industrielle Schutzrechte
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Filing: 1973-05-15
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Granted: 1975-09-23
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Expires: 1993-05-15
Abstract
Abstract A compounding vessel for component substances which interact and form ready-for-use dental preparations. The vessel has a main chamber forming a mixing compartment (and adapted to contain a first component), and a supplementary chamber (adapted to contain a second component) separated by a membrane-closed opening from the mixing compartment. Mixing is effected by rupturing the membrane by pressure applied in a direction towards a wall of the main chamber.
Inventors
- 👤 Robert Purrmann
- 👤 Werner Schmitt
- 👤 Peter Jochum
- 👤 Rainer Grimm-Lenz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:23
CPC Classifications
A; A61; A61C; A61C5/00; A61C5/60; A61C5/66; A61C5/62; A61C5/64; Y; Y10; Y10S; Y10S366/00; Y10S366/602
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
207 words
An apparatus for mixing at least two components in precise proportions comprising a main mixing chamber containing one component of the mixture, at least one supplementary chamber containing an additional component of the mixture, said chamber being defined by a radially inwardly movable wall embracing in movable relationship thereto, the outer wall of the main chamber, said outer wall being cylindrical, the movable wall conforming to the outer wall of the main chamber, the supplementary chamber communicating with the main chamber through an opening in the wall of the main chamber, the component in the supplementary chamber being sealed from the main chamber by a rupturable bag containing the additional component, said bag being placed over said hole, whereupon said bag, upon substantially reducing the volume of the supplementary chamber, abruptly ruptures to allow the additional component to enter the main chamber, means for rupturing the bag comprising external pressure applied in the direction of the wall of the main chamber, whereby the bag is ruptured and the volume of the supplementary chamber is reduced substantially to zero, and a means for retaining the movable wall in a terminal position against the main chamber, comprising axially disposed ribs which engage corresponding notches provided in the movable wall.
Claim 2
Independent Claim
207 words
An apparatus for mixing at least two components in precise proportions comprising a main mixing chamber containing one component of the mixture, at least one supplementary chamber containing an additional component of the mixture, said chamber being defined by a radially inwardly movable wall embracing in movable relationship thereto, the outer wall of the main chamber, said outer wall being cylindrical, the movable wall conforming to the outer wall of the main chamber, the supplementary chamber communicating with the main chamber through an opening in the wall of the main chamber, the component in the supplementary chamber being sealed from the main chamber by a rupturable bag containing the additional component, said bag being placed over said hole, whereupon said bag, upon substantially reducing the volume of the supplementary chamber, abruptly ruptures to allow the additional component to enter the main chamber, means for rupturing the bag comprising external pressure applied in the direction of the wall of the main chamber, whereby the bag is ruptured and the volume of the supplementary chamber is reduced substantially to zero, and a means for retaining the movable wall in a terminal position against the main chamber, comprising axially disposed ribs which engage corresponding notches provided in the movable wall.
Claim 3
Dependent Claim
41 words
The apparatus of claim 1 in which one end of the main chamber is closed by an axially sliding plunger and the other end is provided with an axially tapering end wall, said wall having an axially outwardly projecting ejector nozzle.
Claim 4
Independent Claim
218 words
An apparatus for mixing at least two components in precise proportions comprising a main mixing chamber containing one component of the mixture, at least one supplementary chamber containing an additional component of the mixture, said chamber being defined by a radially inwardly movable wall embracing in movable relationship thereto, the outer wall of the main chamber, said outer wall being cylindrical, the movable wall conforming to the outer wall of the main chamber, the supplementary chamber communicating with the main cHamber through an opening in the wall of the main chamber, the component in the supplementary chamber being sealed from the main chamber by a rupturable bag containing the additional component, said bag being placed over said hole, whereupon said bag, upon substantially reducing the volume of the supplementary chamber, abruptly ruptures to allow the additional component to enter the main chamber, means for rupturing the membrane comprising external pressure applied in the direction of the wall of the main chamber, whereby the volume of the supplementary chamber is reduced substantially to zero and the membrane is ruptured, and a means for retaining the movable wall in a terminal position against the main chamber outside wall, the axial position of the movable wall being fixed by two flanges projecting radially from the outside wall of the main chamber.
Claim 5
Independent Claim
218 words
An apparatus for mixing at least two components in precise proportions comprising a main mixing chamber containing one component of the mixture, at least one supplementary chamber containing an additional component of the mixture, said chamber being defined by a radially inwardly movable wall embracing in movable relationship thereto, the outer wall of the main chamber, said outer wall being cylindrical, the movable wall conforming to the outer wall of the main chamber, the supplementary chamber communicating with the main cHamber through an opening in the wall of the main chamber, the component in the supplementary chamber being sealed from the main chamber by a rupturable bag containing the additional component, said bag being placed over said hole, whereupon said bag, upon substantially reducing the volume of the supplementary chamber, abruptly ruptures to allow the additional component to enter the main chamber, means for rupturing the membrane comprising external pressure applied in the direction of the wall of the main chamber, whereby the volume of the supplementary chamber is reduced substantially to zero and the membrane is ruptured, and a means for retaining the movable wall in a terminal position against the main chamber outside wall, the axial position of the movable wall being fixed by two flanges projecting radially from the outside wall of the main chamber.
Claim 6
Dependent Claim
36 words
The apparatus of claim 3 in which each flange is provided with a notch, the notches being axially aligned; and the movable wall is provided with projections which align with the notches and which engage therein.
Claim 7
Independent Claim
165 words
An apparatus for mixing at least two components in precise proportions comprising a main mixing chamber containing one component of the mixture, at least one supplementary chamber containing an additional component of the mixture, the supplementary chamber communicating with the main chamber through an opening in the wall of the main chamber, the component in the supplementary chamber being sealed from the main chamber by a rupturable membrane which, upon substantially reducing the volume of the supplementary chamber, abruptly ruptures to allow the additional component to enter the main chamber, means for rupturing the membrane comprising external pressure applied in the direction of the wall of the main chamber, whereby the membrane is ruptured and the volume of the supplementary chamber is reduced substantially to zero, said supplementary chamber being cylindrical, its axis being substantially normal to the axis of the main chamber, the supplementary chamber being provided with a slideable plunger which seals the end of its supplementary chamber remote from the main chamber.
Claim 8
Independent Claim
165 words
An apparatus for mixing at least two components in precise proportions comprising a main mixing chamber containing one component of the mixture, at least one supplementary chamber containing an additional component of the mixture, the supplementary chamber communicating with the main chamber through an opening in the wall of the main chamber, the component in the supplementary chamber being sealed from the main chamber by a rupturable membrane which, upon substantially reducing the volume of the supplementary chamber, abruptly ruptures to allow the additional component to enter the main chamber, means for rupturing the membrane comprising external pressure applied in the direction of the wall of the main chamber, whereby the membrane is ruptured and the volume of the supplementary chamber is reduced substantially to zero, said supplementary chamber being cylindrical, its axis being substantially normal to the axis of the main chamber, the supplementary chamber being provided with a slideable plunger which seals the end of its supplementary chamber remote from the main chamber.
Claim 9
Dependent Claim
21 words
The apparatus of claim 5 in which there are two supplementary chambers disposed coaxially opposite each other about the main chamber.
Claim 10
Dependent Claim
41 words
The apparatus of claim 5 in which one end of the main chamber is closed by an axially sliding plunger and the other end is provided with an axially tapering end wall, said wall having an axially outwardly projecting ejector nozzle.
Claim 11
Independent Claim
204 words
An apparatus for mixing at least two components in precise proportions comprising a main mixing chamber containing one component of the mixture, at least one supplementary chamber containing an additional component of the mixture, said chamber being defined by a radially inwardly movable wall embracing in movable relationship thereto, the outer wall of the main chamber, said outer wall being cylindrical, the movable wall conforming to the outer wall of the main chamber, the supplementary chamber communicating with the main chamber through an opening in the wall of the main chamber, the component in the supplementary chamber being sealed from the main chamber by a rupturable membrane which, upon substantially reducing the volume of the supplementary chamber, abruptly ruptures to allow the additional component to enter the main chamber, means for rupturing the membrane comprising external pressure applied in the direction of the wall of the main chamber, whereby the membrane is ruptured and the volume of the supplementary chamber is reduced substantially to zero, said main chamber being cylindrical, one end of which is closed by an axially sliding plunger, and the other end of which is provided with an axially tapering end wall, the end wall having an axially projecting ejector nozzle.
Claim 12
Independent Claim
204 words
An apparatus for mixing at least two components in precise proportions comprising a main mixing chamber containing one component of the mixture, at least one supplementary chamber containing an additional component of the mixture, said chamber being defined by a radially inwardly movable wall embracing in movable relationship thereto, the outer wall of the main chamber, said outer wall being cylindrical, the movable wall conforming to the outer wall of the main chamber, the supplementary chamber communicating with the main chamber through an opening in the wall of the main chamber, the component in the supplementary chamber being sealed from the main chamber by a rupturable membrane which, upon substantially reducing the volume of the supplementary chamber, abruptly ruptures to allow the additional component to enter the main chamber, means for rupturing the membrane comprising external pressure applied in the direction of the wall of the main chamber, whereby the membrane is ruptured and the volume of the supplementary chamber is reduced substantially to zero, said main chamber being cylindrical, one end of which is closed by an axially sliding plunger, and the other end of which is provided with an axially tapering end wall, the end wall having an axially projecting ejector nozzle.
Claim 13
Independent Claim
178 words
An apparatus for mixing components in precise proportions comprising a main mixing chamber containing one component of the mixture, two supplementary Chambers containing additional components of the mixture, said supplementary chambers being defined by a common radially inwardly movable wall embracing in movable relationship thereto, the outer wall of the main chamber, said outer wall being cylindrical, the movable wall conforming to the outer wall of the main chamber, each of the supplementary chambers communicating with the main chamber through an opening in the wall of the main chamber, each of the components in the supplementary chamber being sealed from the main chamber by a rupturable bag containing an additional component, said bags being placed over said holes, wherein said bags, upon substantially reducing the volume of the supplementary chamber, abruptly rupture to allow the additional components to enter the main chamber, means for rupturing the bags comprising external pressure applied in the direction of the wall of the main chamber, whereby the bags are ruptured and the volume of the supplementary chambers is reduced substantially to zero.
Claim 14
Independent Claim
178 words
An apparatus for mixing components in precise proportions comprising a main mixing chamber containing one component of the mixture, two supplementary Chambers containing additional components of the mixture, said supplementary chambers being defined by a common radially inwardly movable wall embracing in movable relationship thereto, the outer wall of the main chamber, said outer wall being cylindrical, the movable wall conforming to the outer wall of the main chamber, each of the supplementary chambers communicating with the main chamber through an opening in the wall of the main chamber, each of the components in the supplementary chamber being sealed from the main chamber by a rupturable bag containing an additional component, said bags being placed over said holes, wherein said bags, upon substantially reducing the volume of the supplementary chamber, abruptly rupture to allow the additional components to enter the main chamber, means for rupturing the bags comprising external pressure applied in the direction of the wall of the main chamber, whereby the bags are ruptured and the volume of the supplementary chambers is reduced substantially to zero.
Claim 15
Dependent Claim
41 words
The apparatus of claim 9 in which one end of the main chamber is closed by an axially sliding plunger and the other end is provided with an axially tapering end wall, said wall having an axially outwardly projecting ejector nozzle.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-09-22 | 1979-03-24 | 1979-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-22 | 1983-03-24 | 1983-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-22 | 1987-03-24 | 1987-09-23 | $7700.00 | Window Closed / Lapsed |