Work holders – Miscellaneous
Patent
1988-08-09
1990-05-22
Hartman, Judy
Work holders
Miscellaneous
254122, A61G 1300
Patent
active
049271270
ABSTRACT:
A height-adjustable table for supporting a patient during medical examination or treatment in which a patient support table top mounted on a carrier 2 is connected to a base 3 by a parallelism maintaining linkage comprising a diamond or rhombus shaped linked assembly of four mutually pivoted equal struts 6, 7, 8, 9, pivotally attached top and bottom to the carrier 2 and to the base 3, and intermediately to the centers of first and second struts 17, 18 which are attached at their ends for free rectilinear displacement, to slides 20, 22, 24, 26, mounted on the carrier 2 and the base 3. Inextensible diagonal links 30, 32 connect diagonally opposed slides 24, 22 and 20, 26, to form an assembly of good horizontal and vertical stiffness even at the maximum height adjustment which is effected by e.g. a screw jack 5.
REFERENCES:
patent: 3034765 (1962-05-01), Ludowici
patent: 3116910 (1964-01-01), Moore et al.
patent: 3823915 (1974-07-01), Koehler
patent: 4567894 (1986-02-01), Bergman
patent: 4624448 (1986-11-01), Lawman et al.
patent: 4720082 (1988-01-01), Yang
patent: 4771785 (1988-09-01), Duer
Briody Tom
Haken Jack
Hartman Judy
Squire William
U.S. Philips Corporation
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