US 4,092,049 AGranted

Lightweight knocked-down chair design constructed of inexpensive components

AssigneeOverman AB

InventorSvante Schoblom

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Abstract

A chair adapted to be packaged, transported and sold in knocked-down (disassembled) fashion and constructed of extremely lightweight and inexpensive components while providing a chair of more than adequate structural strength for normal usage. A pair of uprights are formed from an extremely lightweight relatively soft plastic material such as foamed polystyrene (polyurethane foam) preferably having imbedded therein either cardboard discs or a flat cardboard sheet generally conforming to the outline of each upright for yielding added structural strength; the uprights each being provided with coaligned openings for receiving paper tubes to collectively define an assembled chair frame. The discs or the sheet define the base of each opening. A one-piece fabric cover is stretched over the frame and is tied along the bottom serving as a means for securing the frame pieces in the assembled state, as well as maintaining the fabric spanning the seat and back portions of the chair sufficiently taut to assure comfortable seating thereupon.

Claims17

Dependent claims

An extremely lightweight and yet structurally strong and rugged chair assembly whose design completely eliminates the need for conventional fastening means comprising a pair of uprights formed of extremely lightweight, rigid foamed plastic material;

each of said uprights havin a perimeter whose configuration defines the front surface, seat portion, seat back portion, rear surface and bottom surface of the completed chair and each of said uprights having an interior surface provided with openings of a predetermined depth;
a plurality of hollow cylindrical paper tubes, each being inserted within a cooperating pair of openings of said uprights so that, when fully assembled, said tubes maintain the uprights in a spaced substantially parallel fashion;
a single one-piece fabric cover being pulled over the chair frame assembly and adapted to cover the front, rear, left and right-hand surfaces of the chair assembly, as well as the seat, back and top portions and further adapted to have a pair of flaps which are pulled about the bottom surfaces of the uprights;
means threadedly engaging said flaps for tautly maintaining the cover assembly about said chair frame assembly whereby only the uprights engage the cover and further maintain the cover a spaced distance from all of said tubes, even under the weight of a person using the chair.

1 more element

Dependencies are inferred from the claim text.