Patent ID: 8181400

Claim:
A gas fill device for a multiple pane window, comprising: at least one gas fill tube adapted for permanent installation through a spacer bar separating the multiple panes, the gas fill tube having a first end communicating with an insulating volume of gas disposed between the multiple panes and having a second end opposite the first end, the second end being disposed external to the insulating volume of gas and includes a radial, annular groove; a hollow elbow pivotally attached to the second end of the at least one gas fill tube, the elbow having a first end communicating with the second end of the gas fill tube and a second end opposite the first end, wherein the first end defines an inwardly disposed annular flange sized and configured to pivotally mate with the radial groove of the second end of the gas fill tube; and a closure removably sealed to the second end of the elbow.