Agitating – Mixing chamber removable from stirrer and support
Patent
1994-01-14
1995-03-14
Scherbel, David A.
Agitating
Mixing chamber removable from stirrer and support
366251, 366259, 366312, 366347, 206219, 215DIG8, B01F 720
Patent
active
053971787
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
The invention deals with a screw container or jar used as a dispensing vessel for pharmaceutical and/or cosmetic ointments, pastes, creams, gels, emulsions or the like with or without addition of solid ingredients, producible by means of a stirring mechanism.
Prescription mixtures of fatty substances and gels are generally pulverized and manually mixed with other liquids, with or without addition of solid ingredients, in so-called ointment mortars by means of a pestle. Ointment mixing- or stirring machines offered commercially more or less imitate this process. In order to attain homogeneous mixtures the ointment must be built up slowly in several steps. The individual ingredients must be weighed separately and added to one another in several steps. If solid substances are not specifically dispersed at the start of the preparation, a subsequent fine processing with an ointment grinder can also become necessary in order to grind up remaining powder clumps or crystalline ingredients.
The manufacture is performed in wide open vessels with unimpeded access of air. The quantity of germs contained in the air which enter the mixing vessel is unwarrantably large. All instrumentation used must be thoroughly cleaned, in order to make it again ready for operation. In any case the mixed product must be decanted into a dispensing vessel or container.
Apart from the high procurement costs of the above-mentioned ointment mixing- and stirring machines, the production process including the preparation and post-production activities is very time- and thus cost-intensive.
Compared to that the invention is based upon the task of remedying this discrepancy and to enable a thorough intermixture of ointments, pastes, creams, gels and emulsions or the like, especially in the area of small dispensed quantities for instance as they occur in prescription mixtures and to avoid decanting of the prescription mixtures out of large open mixing vessels into small dispensing vessels.
SUMMARY OF THE INVENTION
The invention solves this task by making a screw container or jar configured as a dispensing vessel to be used simultaneously as a mixing vessel when manufacturing prescription mixtures, whose screw cap, which can be threaded upon an external thread of the jar body, comprises a closeable center aperture for passing the drive shaft of a stirring tool of the stirring mechanism through same.
The intermixing of the prescription ingredients in a closed system occurs largely without air penetration. A transfusing of ointments, pastes, creams, gels emulsions or the like out of a large mixing vessel into small dispensing vessels is eliminated. The mixing vessel serves simultaneously as a dispensing vessel but also as a storage container.
A sealing plug tied to the screw cap is provided for sealing the central aperture.
Two screw jars or containers can be used in the invention. In a first embodiment example the jar body is a circular cylinder, whose end opposite the external thread comprises an aperture in the base and an internal ring, and in which a bottom is disposed so as to be displaceable. Thus it is possible to press the contents of the screw jar little by little through the central aperture of the screw cap or through an applicator out of the screw jar or screw container. It is possible within the frame of the invention to fasten different applicators by a clip-on connection in the central aperture of the screw cap.
It is significant that the central aperture in the screw cap is configured as a portion of a clip-on connection for fastening different applicators.
In a second embodiment example the internal jacket and the external jacket of the container body taper truncated cone-like from the external thread towards the stationary base. Herein the internal surface of the stationary base is matched to the shape of the stirring tool.
In order to assure a particularly good intermixture of the ingredients of the prescription mixture in a space containing very little air, a vane stirrer is used as a stirring to
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Cooley Charles
Scherbel David A.
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