| 主权项 |
1. A support and gliding mechanism for a chair or sofa comprising
a base for supporting the chair or sofa on a flat surface; a post extending upwardly from the base, the post having a bottom end connected to the base and a top end; a frame on the post including a crossbar on the top end of and extending laterally outwardly from opposite sides of the post in a direction perpendicular to a longitudinal axis of the mechanism, and a pair of spaced apart sides connected to opposite ends of the crossbar, each frame side being parallel to the longitudinal axis of the mechanism, and each frame side having a pair of free ends above and spaced apart from the crossbar and bottom ends extending downwardly beneath the top end of the post; pivot arms having top ends pivotally connected to the free ends of the frame sides for rotation around parallel horizontal axes, the pivot arms having sides extending downwardly between the frame sides and having bottom ends beneath the level of the crossbar; and a carriage including a planar top plate for supporting a chair or sofa, and a pair of sides extending downwardly from said top plate between said frame sides and the sides of the pivot arms, said carriage sides having bottom free ends pivotally connected to the inside bottom ends of said pivot arms, said carnage sides being shorter than said pivot arms, whereby the top plate of the carriage is located in a horizontal plane beneath the free ends of the frame sides when the mechanism is in a rest position. |
