Fluent material handling – with receiver or receiver coacting mea – With material treatment – Heating or cooling
Reexamination Certificate
1999-09-27
2001-01-23
Recla, Henry J. (Department: 3751)
Fluent material handling, with receiver or receiver coacting mea
With material treatment
Heating or cooling
C141S100000, C141S102000, C141S234000, C141S236000, C141S242000, C141S244000, C222S054000, C222S061000, C222S146600
Reexamination Certificate
active
06176277
ABSTRACT:
FIELD OF THE INVENTION
The invention discloses improvements in a device for filling a pressurized pharmaceutical fluid into packaging containers.
BACKGROUND OF THE INVENTION
In a known device of this type, disclosed in German published patent application DE 43 41 934 A1, provision is made to calculate the filling time for the fluid, if need be, by taking into account the temperature detected by a temperature sensor disposed in the distributor. However, it has been learned by experience with devices of this type that the measurement of the fluid temperature, and the adaptation of the filling time by means of software programs that take the fluid temperature into account, does not produce satisfactory results with regard to filling precision. This drawback is particularly the case with products that have a very temperature-dependent flow behavior.
OBJECTS OF THE INVENTION
It is a principal object of the disclosed device for filling a pressurized pharmaceutical fluid into packaging containers that the filling precision is very high even when the flow behavior of the fluid to be filled is very temperature-dependent. This object is achieved by virtue of the fact that according to the invention, the fluid is supplied to the filling valves at a certain, particularly constant temperature. In this way the otherwise discernible temperature fluctuations of the fluid can be prevented, which fluctuations are produced as a result of the components of the filling device warming up—for example, during a batch change, after a production pause, or at the start of the filling.
Other advantages and advantageous improvements of the device according to the invention for filling a pressurized pharmaceutical fluid into packaging containers will become apparent from a review of the drawings taken in condjuction with the specification.
REFERENCES:
patent: 4216879 (1980-08-01), McMillin
patent: 5701937 (1997-12-01), Bourboulou et al.
patent: 5823234 (1998-10-01), Boertz
patent: 5871121 (1999-02-01), Hashimoto et al.
patent: 43 41 934 A1 (1995-06-01), None
Greigg Edwin E.
Greigg Ronald E.
Maust Timothy L.
Recla Henry J.
Robert & Bosch GmbH
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