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    • 57. 发明授权
    • Coplanar bi-fold and sliding door
    • US11286709B2
    • 2022-03-29
    • US16675941
    • 2019-11-06
    • Pella Corporation
    • Todd A. BernhagenNathan R. EricksonPaul D. Schroder
    • E06B3/50E05D15/48E05D15/58
    • A fenestration unit such as a door operable in a sliding mode and a bi-fold folding mode. Examples include a frame, a first panel, a second panel, and one or more fold hinges releasably pivotally connecting a second side portion of the first panel to a first side portion of the second panel and defining a folding axis. In the sliding mode (1) the fold hinges are configured to disconnect the first and second panels, (2) the first panel is in a closed position with respect to the frame, and (3) the second panel is configured to slide along a path generally parallel to the first panel between a closed position and a sliding open position. In the folding mode (1) the fold hinges are configured to pivotally connect the second side portion of the first panel and the first side portion of the second panel, and (2) the first panel and second panel fold with respect to one another about the folding axis with the first panel pivoting with respect to the frame and the second panel sliding and pivoting with respect to the frame as the first and second panels move between the closed positions and folding open positions.