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US 6,786,246 B2Granted
Method and apparatus for filling cartridges with a liquid
AssigneeNovo Nordisk A/S
InventorsRene Ohms, Flemming S. J. Manique, Preben Kobbero
Life of this patent
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AssigneeNovo Nordisk A/S
InventorsRene Ohms, Flemming S. J. Manique, Preben Kobbero
Estimating the term…
An apparatus for filling a cartridge with a liquid comprises, a platform on which the cartridge is supported and which can be lifted relative to a stationary filling needle (5) so that this filling needle is moved into the cartridge (6), a pump (1) feeding liquid through the filling needle (5) into the cartridge (6), a sensor head (10) from which a beam of light is sent from one side of the cartridge to the other along a path immediately over an upper edge of the cartridge (6), and a reflector (11) reflecting the light beam back to the sensor head (10), which is connected to a sensor box (12) which produces a signal stopping the pump (1) and causing the needle (5) to be drawn out of the cartridge (6) when this cartridge is full and the liquid forms a droplet over the opening of the cartridge, which droplet deflects the light beam.
A method for filling a cartridge (6) with a liquid, characterised by the steps
A method according to claim any one of the preceding claims, characterised in that the topping up of the cartridge (6) is so adjusted that the amount of liquid exceeding the volume of the cartridge (6) and forming a drop over at the edge of the cartridge (6) corresponds to the amount of liquid displaced by the part of filling needle (5) projecting into the cartridge (6).
An apparatus for implementing the method for filling a cartridge (6) with a liquid, comprising
Dependencies are inferred from the claim text.