Abstract: A foldable combined bench and table includes two spaced support frames each with a bottom rod for lying on a ground surface, and frontmost and rearmost posts for detachably mounting two bench seat members, and a leg member between the posts. A mounting frame is provided with a flat board member, and includes two spaced side rails, and rightmost and leftmost crossbars which interconnect the side rails to define a first axis and which are coupled with the leg members such that the leg members are pivoted about the first axis. Two linkage assemblies are mounted between the mounting frame and the support frames. Each linkage assembly includes upper and lower linking arms which are hinged to each other about a second axis parallel to the first axis, and which are respectively secured to the mounting frame and the corresponding leg member.

Abstract: A height adjusting apparatus includes a vertical outer tube that is adapted to be fixed on the base, and a vertical inner tube that is adapted to be fixed on the working table and that is mounted telescopically on the outer tube. A guiding device guides the inner tube to move vertically within the outer tube while preventing rotation of the inner tube relative to the outer tube. An externally threaded vertical rod is journalled in the outer tube, and engages threadably an internal thread portion of the inner tube. A driving mechanism includes a driven bevel gear that is mounted coaxially and fixedly on the vertical rod, and a driving bevel gear, which is mounted rotatably in the outer tube and which meshes with the driven bevel gear. The driving bevel gear rotates about a horizontal axis so as to rotate the vertical rod, thereby moving the inner tube vertically within the outer tube.