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US 5,704,405 AGranted
Process and apparatus for filling insulating glass panes with heavy gas
OwnerPeter Lisecinventor
Life of this patent
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OwnerPeter Lisecinventor
Estimating the term…
For metering of heavy gas which is intended for use in filling insulating glass panes with heavy gas or in the assembly of heavy gas-filled insulating glass panes, heavy gas is introduced into A space (5) of a cylinder (1) whose internal space is divided by a piston (2) into two spaces (5 and 6), piston (2) moving as other space (6) becomes smaller, so that heavy gas flows out of the latter. The displacement path of piston (2) is measured by displacement sensor (7) and electronic rule (4). Furthermore, the temperature and pressure of the heavy gas flowing out of space (6) via connection (20) are measured and the displacement of piston (2) is interrupted as soon as the amount of heavy gas determined on the basis of the displacement path and the values of temperature and pressure of the discharging heavy gas corresponds to the required amount of heavy gas.
Process for filling insulating glass panes with heavy gas, comprising introducing heavy gas into a space which can be made larger or smaller, detecting the temperature and pressure of the gas in said space, continuing to introduce gas into said space whilst making the space progressively larger, until the volume and temperature and pressure of the gas in the space reach predetermined values corresponding to a predetermined amount of gas to be introduced into an insulating glass pane and thereupon halting the increase in the volume of the space, and thereafter introducing heavy gas from said space into a said insulating glass pane.
Apparatus for filling insulating glass panes with heavy gas, comprising a cylinder (1), a piston (2) movably mounted in the cylinder, means (7, 8) for supplying heavy gas from a source (11) of heavy gas to said cylinder, means (12, 13) for measuring the temperature and pressure of the gas in the cylinder, means (4, 27) for measuring the position of the piston in the cylinder thereby to measure the volume of the cylinder on at least one side of the piston (2), and means (14, 15) for discharging heavy gas from the cylinder when said temperature and pressure and measured volume correspond to a desired amount of heavy gas to be discharged from the cylinder into an insulating glass pane.
Dependencies are inferred from the claim text.