Abstract: An infant chair having a seat portion carried by a support portion is provided. The seat portion includes two support pins at a proximal end thereof received within the support portion for connecting the seat portion thereto. The support pins are disposed above a center of gravity of the seat portion and define a substantially vertical swing axis therebetween. The seat portion is configured to oscillate about the swing axis.

Abstract: A chair having a seating unit and two pairs of legs made slidably integral by couplings attached to the seating unit and designed to engage the relevant inserts located in such first pair of legs, which are made to slide in relation to the second pair of legs by further couplings located in further inserts provided on the second pair of legs, so as the couplings are designed to allow substantially continuous tilt adjustment of the seat and of the backrest relative to the seat, as a result of the relevant pushing action exerted by the user while assuming various positions that are balanced by the push up action.

Abstract: A joint is provided which can serve for connecting two elements, but can also be employed for making a column or pole like structure. The joint consists of two superposed plates or frame shaped bodies which are interconnected by two pairs of crossing rods. The joint serves to connect two modular parts in a chain-like construction.

Abstract: An ergonomic chair comprising:a substantially rigid seat structure (2,2'),a substantially rigid back structure (1,1'), articulated to the seat structure,a base (5,5') resting on the floor,a legs structure comprising on each side a pair of crossing legs (3,3', 4,4'), one (4,4') of which is articulated at the upper end to the front portion of the seat structure (2,2'), is provided with a slider (8,8') for the other leg (3,3') and is bound at the lower end to the base (5,5'), whereas the other leg (3,3'), which is elastically bending deformable, is articulated at the upper end to the back structure (1,1'), leans against a back stud (9,9') applied to the seat structure (2,2') engages with the slider (8,8') foreseen in the other leg (4,4') and is bound at the lower end to the base (5,5').