Folding table with gas cylinders

• US 4,596,196 A
• Filed: 07/16/1984
• Issued: 06/24/1986
• Est. Priority Date: 07/16/1984
• Status: Expired due to Term

• Current Assignee: Krueger International Incorporated
• Original Assignee: Krueger Incorporated
• Inventors: Patterson, Carl F., Gunter, Gary T.
• Primary Examiner(s): Lyddane, William E.
• Assistant Examiner(s): ASCHENBRENNER, PETER
• Application Number:
  US06/631,189
• Time in Patent Office: 708 Days
• Field of Search: 108/113, 108/136, 108/37, 248/631
• US Class Current: 108/169
• CPC Class Codes: A47B 2003/145 with folding table top
• CPC Class Codes: A47B 3/083 with foldable top leaves
• CPC Class Codes: A47B 3/14 Foldable table and seat units

Abstract

A folding table assembly includes enclosed gaseous power cylinders for assisting the folding and unfolding operations. The cylinders are mounted to the supporting legs so that their weights are not added to that of the table members to be lifted. The cylinders exert constant forces tending to fold the table, and they provide cushions to resist the table weight during the unfolding operation.

Claims

1. In a folding table assembly including first and second longitudinal top sections pivotable between a horizontal unfolded mode and a vertical folded mode;

first and second frame means for supporting the respective top sections;

hinge means for pivotally connecting the first and second frame means;

first and second inner leg means for pivotally supporting the respective frame means near the hinge means;

first and second outer leg means for pivotally supporting the respective frame means distal from the hinge means;

a first stretcher pivotally attached to the first inner and first outer leg means; and

a second stretcher pivotally attached to the second inner and second outer leg means, the first and second stretchers coordinating the pivotal motions of the respective inner and outer leg means with respect to the respective first and second frame means during the folding and unfolding operations,

the improvement comprising;

at least one enclosed gaseous constant force power cylinder having a closed end and a rod end, one cylinder end being pivotally connected to a selected outer leg means and the other cylinder end being pivotally connected to the corresponding top section for producing a constant force on the top section tending to pivot the top section to the folded mode,

so that the force required to be exerted by an attendant to fold the table is uniformly reduced and the weight of the cylinder is carried by the outer leg means.

2. The improved folding table assembly of claim 1 wherein the cylinder end connected to the table top is connected thereto at a location closer to the respective outer leg means than to the respective inner leg means to thereby increase the vertical component of the cylinder force when the table is in the unfoled mode.

3. The improved folding table assembly of claim 1 wherein the cylinder produces a constant force tending to resist pivoting the top section to the unfolded mode,

so that the weight of the unfolding table is uniformly cushioned by the cylinder during the unfolding operation.

4. The improved folding table assembly of claim 3 wherein at least two power cylinders are pivotally connected between each outer leg means and corresponding table top, and wherein the closed and rod ends of the cylinders associated with each table top and outer leg means are connected to the respective outer leg means and table top in opposite orientations to thereby provide different cylinder operating characteristics for aiding in the folding and unfolding operations.