Retractable stairs-like stand

Static structures (e.g. – buildings) – With stadium or auditorium feature – Seating arrangement

Patent

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Details

52 8, 52 10, 297235, E04H 312

Patent

active

060001747

ABSTRACT:
A retractable, stairs-like stand includes plural steps of floor-bases which are moved horizontally between the advanced position where the floor-bases are mutually shifted into a form of stairs and the retracted position where the floor-bases are mutually lined up along the vertical direction, and plural seats fitted onto the floor-bases. The front portions of the respective floor-bases are equipped with parallel link mechanism for parallel moving the seat sections of the seats back and forth between the use-position where the seat sections of the seats are spaced from the floor-bases and the descent position where the seat sections of the seats are adjacent the floor-bases. Fastening mechanisms are disposed for selectively fixing the seat sections to the use-position and the fastening position where releasing the sections from the use-position. Rear link members are jointed to the backs so as to rotate the back of the seats following the rotation of the front and rear link members constituting the parallel link mechanism, between the use-position where the backs of the seats stand up away from the floor-bases and the collapsed position where, behind the descent position, the backs are adjacent the floor-bases lying on their back faces.

REFERENCES:
patent: 177526 (1876-05-01), Lawrence
patent: 207539 (1878-08-01), Mellinger
patent: 1656931 (1928-01-01), Wolfermann
patent: 2987111 (1961-06-01), Walworth
patent: 3352069 (1967-11-01), Curra, Jr.
patent: 4703043 (1987-10-01), Suzuki
patent: 5517789 (1996-05-01), Sugiyama
patent: 5653502 (1997-08-01), Kimura et al.
patent: 5740989 (1998-04-01), Daines

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