公开(公告)号：US3918225A

公开(公告)日：1975-11-11

申请号：US37275273

申请日：1973-06-22

申请人： FISHER JULES ,  SOOT OLAF

发明人： FISHER JULES ,  SOOT OLAF

IPC分类号： E04H3/12 ,  E04H3/26 ,  E04B5/43 ,  B66B9/04

CPC分类号： E04H3/126 ,  E04H3/26

摘要： A modular floor system comprises a plurality of modular floor elements, each of which can be individually lifted to and supported at preset heights to change the configuration of the floor. The modular floor elements can be placed, either individually or in groups, at different levels relative to each other, to form stages, stairs, seating areas, display areas, grandstands, and balconies. Each modular floor element substantially comprises a floor panel, a sliding post, a sliding post guide, and an air cylinder assembly. Each sliding post includes a low position stop pin located at the post''s upper portion, a plurality of radially directed uniformly spaced positioning pin holes, a longitudinally directed keyway, and an air seal assembly located at the post''s lower portion. The sliding post guide, which is rigidly set into a concrete slab, includes a key which interacts with the sliding post keyway, a pin support seat, and leveling means. The floor panel is fastened to the top of the sliding post, which, in turn, is vertically guided and laterally supported by the sliding post guide. The sliding post can be supported at any preset height by a positioning pin which is placed through a positioning hole on the sliding post. The positioning pin bears against the pin support seat located on the upper portion of the sliding post guide. The pin, in addition to the action of the combination comprising the key and keyway, also prevents rotation of the sliding post about its longitudinal axis by coacting with the pin support seat. The air cylinder assembly, which is fastened to the lower portion of the sliding post guide, is adapted to receive the sliding post and its air seal assembly. The sliding post is raised or lowered by introducing air pressure into the cylinder at a location below the lowermost position of the air seal assembly. The air supply system, which provides this air pressure, includes an orifice which, upon deactivation of the air system, allows air to controllably escape from the cylinder. This, of course, allows the sliding post to drop until the positioning pin rests upon the guide''s pin support seat. Alternatively, the air cylinder and air seal assemblies can be deleted, in which case the sliding post can be raised or lowered by an overhead hoist or by a portable lift device located below the sliding post.