US 7,478,868 B2
Armchair tablet hinge system
Jose Figueras Mitjans, Barcelona (Spain)
Assigned to Figureas International Seating, S.A., Llica d'Amunt, Barcelona (Spain)
Appl. No. 10/595,685
PCT Filed Nov. 04, 2004, PCT No. PCT/ES2004/000488
§ 371(c)(1), (2), (4) Date Jun. 29, 2006,
PCT Pub. No. WO2005/044052, PCT Pub. Date May 19, 2005.
Prior Publication US 2007/0132283 A1, Jun. 14, 2007
Int. Cl. A47B 39/00 (2006.01)
U.S. Cl. 297—162  [297/145; 297/160; 297/161] 3 Claims
OG exemplary drawing
 
1. An armchair tablet hinge system for rotating and folding a tablet with respect to an armrest of an armchair comprising:
a support affixable to the armrest;
a rotatory hollow shaft rotatably housed in the support and having a head at one end of the shaft, the head projecting out from a front end of the support;
a cam affixable to the tablet, the cam rotatably mounted in the head of the shaft to provide articulation of the tablet;
a rod axially housed in the shaft and pushed by a spring to project one end of the rod through the head to provide a sliding rest against the cam;
a notch in the cam abutting the one end of the rod to provide provisional blocking of the rotation of the tablet;
an angular notch at a rear end of the support;
a bolt affixed perpendicular axially to the shaft and in the angular notch to limit rotation of the shaft with respect to stop position of ends of the angular notch; and
a torsion spring acting on the shaft to rotate the shaft in a direction to make the tablet fall into a folded position under the armrest.