Patent ID: 6990771
Filing Date: 2006-01-31
Classification: E05F,E05Y,E06B

Abstract:
1. In combination with a building structure, the building structure including first and second walls at an angle with respect to one another and coterminating at a corner, and including, to walk into and out of the building structure, improvements for accessing the building structure through said openings, said improvements including (a) a first horizontally oriented track extending across said first opening; (b) a second horizontally oriented track extending across said second opening and at said angle with respect to said first track; (c) at least a first panel slidable mounted in said first opening on said first track and having a leading portion and a rear portion; (d) at least a second panel slidable mounted in said second opening on said second track; (e) a first rotatable pulley ( (f) a second rotatable pulley ( (g) a first guide unit ( (h) a second guide unit ( (i) a belt ( (j) a motor for driving one of said pulleys to move simultaneously each of said first and second panels with respect to said corner.