US Patent 7743557 Sliding track coupling structure for sliding doors

A sliding track for sliding doors includes a sliding door track and a glass fixed panel track which have an inverted U-shape cross section with an opening facing downward. The sliding door track has a left and a right inner wall that have a pair of guiding tracks formed thereon to allow a plurality pairs of rollers which are hinged on a hanging track which is fastened to a sliding door on a lower side to roll thereon in a straddle manner. The sliding door track further has a pair of first wedge troughs on the upper left and upper right corners, and a pair of second wedge troughs on a lower side. The first and second wedge troughs are coupled with the glass fixed panel track. The sliding door track and the glass fixed panel track may also be coupled with an ornamental plate on the top. The glass fixed panel track may further be coupled with a sealing plate on the bottom.