US 4,058,066 AGranted

Adjustable table

OwnerNicholas M. Altmaninventor

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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.

Claims1

Dependent claims

An adjustable table comprising:

a. A pair of front legs,
b. A first transverse bar rigidly attached at opposite ends to the front legs and holding them in spaced, generally parallel relation to each other,
c. A pair of mounting brackets attached to the front legs,
d. A pair of rear legs pivotably mounted on the mounting brackets,
e. A second transverse bar rigidly attached at opposite ends to the rear legs and holding them in spaced, generally parallel relation to each other,
f. The pair of rear legs pivotable to lie in the plane defined by the front legs,
g. Portions of the mounting bracket positioned to stop the pivoting of the rear legs when they are extended from the front legs sufficiently to sustain the front legs in a standing position together with the rear legs,
h. A pair of upper legs pivotably attached to the front legs at one end and pivotable around the front legs.
i. Control-arm brackets attached to each of the upper legs,
j. Slotted control arms attached to each of the control-arm brackets,
k. A first rod passed through the first transverse bar, having a head at one end engaged with a slot in one of the control arms and a thread on the other end of the rod,
l. A nut on the thread at the other end of the rod which end is engaged with the slot in the other control arm, whereby the attitude of the upper leg may be affirmatively fixed in an elected position with respect to the front legs when the upper leg is pivoted on its front legs and the nut is tightened,
m. A table,
n. A pair of table brackets attached to the back of the table,
o. The table brackets pivotably attached to the other end of the upper legs,
p. A third transverse bar rigidly attached at opposite ends to the upper legs and holding them in spaced, generally parallel relation to each other,
q. A second pair of slotted control arms attached to each of the table brackets,
r. A second rod passed through the third transverse bar, having a head at one end engaged with a slot in one of the second control arms and a thread on the other end of the second rod,
s. A nut on the thread at the other end of the second rod which end is engaged with the slot in the second control arm, whereby the attitude of the table with respect to the upper legs may be affirmatively fixed with respect to the upper legs when the table is pivoted as the nut on the second rod is tightened.

16 more elements

Dependencies are inferred from the claim text.

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Abstract

An adjustable table comprising:

a. A pair of front legs,
b. A first transverse bar rigidly attached at opposite ends to the front legs and holding them in spaced, generally parallel relation to each other,
c. A pair of mounting brackets attached to the front legs,
d. A pair of rear legs pivotably mounted on the mounting brackets,
e. A second transverse bar rigidly attached at opposite ends to the rear legs and holding them in spaced, generally parallel relation to each other,
f. The pair of rear legs pivotable to lie in the plane defined by the front legs,
g. Portions of the mounting bracket positioned to stop the pivoting of the rear legs when they are extended from the front legs sufficiently to sustain the front legs in a standing position together with the rear legs,
h. A pair of upper legs pivotably attached to the front legs at one end and pivotable around the front legs.
i. Control-arm brackets attached to each of the upper legs,
j. Slotted control arms attached to each of the control-arm brackets,
k. A first rod passed through the first transverse bar, having a head at one end engaged with a slot in one of the control arms and a thread on the other end of the rod,
l. A nut on the thread at the other end of the rod which end is engaged with the slot in the other control arm, whereby the attitude of the upper leg may be affirmatively fixed in an elected position with respect to the front legs when the upper leg is pivoted on its front legs and the nut is tightened,
m. A table,
n. A pair of table brackets attached to the back of the table,
o. The table brackets pivotably attached to the other end of the upper legs,
p. A third transverse bar rigidly attached at opposite ends to the upper legs and holding them in spaced, generally parallel relation to each other,
q. A second pair of slotted control arms attached to each of the table brackets,
r. A second rod passed through the third transverse bar, having a head at one end engaged with a slot in one of the second control arms and a thread on the other end of the second rod,
s. A nut on the thread at the other end of the second rod which end is engaged with the slot in the second control arm, whereby the attitude of the table with respect to the upper legs may be affirmatively fixed with respect to the upper legs when the table is pivoted as the nut on the second rod is tightened.

16 more elements