Height adjusting apparatus with intermeshing bevel gears

Supports – Stand – Standard type

Patent

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Details

248405, 108147, F16M 1108, A47B 904, A47B 920

Patent

active

061318701

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. An adjusting member is mounted rotatably on an outer surface of the outer tube, and is connected fixedly to the driving bevel gear for driving the driving bevel gear. Preferably, an annular water seal is interposed between the inner tube and the upper end portion of the outer tube to establish a water-tight seal therebetween.

REFERENCES:
patent: 1041701 (1912-10-01), Thornley
patent: 2176536 (1939-10-01), McCauley
patent: 2368746 (1945-02-01), Doty
patent: 2475411 (1949-07-01), Squires
patent: 2893470 (1959-07-01), Peller
patent: 3086743 (1963-04-01), Littman
patent: 3210846 (1965-10-01), Balkin
patent: 3923280 (1975-12-01), Good
patent: 4728072 (1988-03-01), Mitchell
patent: 4750701 (1988-06-01), Folson et al.
patent: 4967619 (1990-11-01), Kato
patent: 5685510 (1997-11-01), Frankish

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