Horizontally supported planar surfaces – Tiltable surfaces – Pivotally adjustable about horizontal axis
Patent
1976-06-30
1977-11-15
Parsons, Jr., Marion
Horizontally supported planar surfaces
Tiltable surfaces
Pivotally adjustable about horizontal axis
108 10, A47B 2714
Patent
active
040580660
ABSTRACT:
An adjustable table wherein front and rear legs open to provide a rigid support for a pair of pivotably mounted upper legs, to which a table is pivotably attached; slotted arms adjust the position of the upper legs with respect to the front legs; and slotted arms adjust the position of the table with respect to the upper legs; a bar spaces the front legs apart and a smaller space the upper legs aparts; each bar encloses a rod with a threaded end for a thumb nut to cinch a slotted arm in a preselected position for holding the table.
REFERENCES:
patent: 527017 (1894-10-01), Fry
patent: 677216 (1901-06-01), Huebner
patent: 874052 (1907-12-01), Contwell
patent: 2265105 (1941-12-01), Farrington
Lyddane William E.
Parsons, Jr. Marion
Popper Norman N.
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