| 摘要 |
PCT No. PCT/GB88/00359 Sec. 371 Date Nov. 7, 1989 Sec. 102(e) Date Nov. 7, 1989 PCT Filed May 6, 1988 PCT Pub. No. WO88/08682 PCT Pub. Date Nov. 17, 1988.A device for adjusting the seat height (S) of a chair (2) comprising four leg extenders (A, B, C, D). Each has an aluminum extrusion leg extension member (11) with a rebate (12) for partially accommodating a leg (1) to be extended. Located at one of a plurality of slots (21) along the member, a leg end support (18) is engaged and located by a locking member (23). Above the support (18), an overcentre buckle clamp (39), clamps the leg (1) to its extension member (11).
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