METHOD FOR MOVING-OUT AND RETURN OF FOOTBALL FIELD FOR COVERED STADIUM AND COMPLEX FOR ITS REALISATION Russian patent published in 2010 - IPC A63C19/12 E04H3/28 

FIELD: sports.

SUBSTANCE: invention relates to arrangement of covered stadiums with football field with grass cover, namely to football fields that are moved out beyond stadium borders and back. In method for moving-out and return of football field, movement of rigid flat plate with grass coating relative to base in both directions is carried out by base inclination towards direction of movement with gravity movement along plate base, which is equipped with roller supports. Air cushion is provided between plate and base with excessive pressure, providing for development of total force that holds the plate, which is smaller in value than weight of plate with grass coating on it. At end sections of its motion the plate is braked in both directions and fixed in final points. Complex of moved-out football field for covered stadium comprises rigid flat base within the stadium and outside of it, made of two independent parts with the possibility of their rotation relative to horizontal hinged joints placed closely to each other near one of football field edges. Along the length of both parts of base there are vertically oriented power cylinders arranged with identical pitch, providing for possibility to autonomously lift and lower both parts of base. Plate is shaped as platform and is equipped with roller supports with the possibility of their interaction with guides of both parts of base, which are oriented in direction that is longitudinal to base. Along platform perimetre there are elastic aprons fixed that may interact with base and seal inner volume between platform and base, which along its whole length is arranged with holes for supply of compressed air through them and their closing. At outer edges of both parts of base there are spring-loaded supports fixed with the possibility of their interaction with end edges of platform. Between platform and roller supports there are gaskets made of elastic material. Guides of both parts of base are equipped with braking devices.

EFFECT: invention provides for simplified mechanism of field motion, reduced labour intensiveness and time required to do operations of football field extension and returning in initial position.

4 cl, 5 dwg