US 4,875,737 AGranted

Disassemblable corrugated board backed chair

AssigneeSunclipse, Inc.

InventorAlfonso Cardenas

Life of this patent

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Abstract

A disassemblable chair constructed of three corrugated paper board elements brought together and interlocked by slotting in each of the elements. The first and basic element may be die cut from a rectangular corrugated board sheet which is creased, bent over and secured along overlapping edges to form a rectangular cross sectional seat and back support. A second rectangular slotted element is disposed transversely across the seat supporting edges of the first element to complete the seat support; and a third rectangular element is laid over the seat and back support and secured by insertion of its end and a center fold into interlocking slotting in the first element.

Claims13

Dependent claims

A backed chair assemblable from a group of corrugated board elements all of which, before asssembly, may be flattened for convenient packaging, said chair comprising:

A. Vertical means to interlockingly receive and position a seat support and a seat and back member, said means being formed from a first rectangular planar sheet of corrugated board, said first sheet being cut out to provide two side edge portions spaced from each other and an intermediate portion of lower height than said side edge portions, said sheet being bent along four vertical lines to form 90 degree corners, with one side edge folded back and secured to the other side edge to form a closable and openable set of four panels, comprising a lower front panel, two parallel spaced apart lower forward partial side panel portions, and a higher rear panel and higher partial rear side panel portions, the last said panel portions being angled down to the lower forward partial side portions, each of said four panels having upper and lower edges, each of the lower forward partial side panel portion being transversly slotted downwardly from its upper edges in two places spaced apart from each other and from the lower front panel, and further being slotted transversly downwardly from the points where the higher partial rear side panel portions join the lower forward partial side edge portions, and the lower front panel being transversely slotted into the adjoining two lower side panels below the upper edges of the front and lower forward partial side panels, the upper edges of the latter side panels between the two spaced apart transverse slottings being recessed to the extent of the thickness of the corrugated board;
B. A seat and back support, said support comprising a rectangular corrugated board at least slightly. greater in width than the distance between the side panels when the said vertical means is in the folded position, the said support being of a height equal to the total dimensions of the spacing between the two spaced apart transverse slottings and the depths of each pair of slottings on one side panel one end edge of, said seat and back support being inserted into one of the two pairs of spaced apart transverse slottings, said support being bent to a 90 degree angle to seat in said recessed upper edges of the side panels, and further bent to a 90 degree angle for insertion of its other end edge into the second spaced apart pair of transverse slottings;
and
C. A seat and back member formed of a rectangular corrugated board having a width at least slightly greater than the distance between the side panels when the vertical means is in its folded position, one end of said seat and back member being inserted in the slotting in the lower front panel, said member being bent at right angles upardly first to extend the seat and back member up over the front panel, and then on the upper side panel edges;
said seat and back support member further being doubled back upon itself for insertion into the slotting where the lower forward partial side panel portions and higher partial rear side panel portions;
join each other, and to extend further over the upper edges of the higher partial rear side panel portions for securing in an upper region thereof, thereby to form a supported seat and chair back.

3 more elements

A corrugated board chair comprising:

A. A corrugated board sheet formed into a box-like configuration with a front panel, said front panel having an upper edge and being transversely slotted below said edge two side panels and a rear panel, each panel having upper and lower edges and opened at its top and bottom to define a cavity rectangular in horizontal cross-section, the rear panel and edge portions or each side panel connected to the rear panel being higher than the upper edges of the remainder of the portions of the side panels, said higher side panel edges being joined to said lower upper side edge panel portions by angular intermediate edge portions, each of said lower side edges being slotted transversely at two locations spaced from each other and from the front panel, and further being transversely slotted at the point where said lower edge meets the said angular intermediate edge;
said front panel being transversely slotted below its upper edge, and slotting being extended into the side panels;
B. A corrugated board channel member, said channel member being inverted to present downwardly extending edges and disposed transversely to, and seated on, said side panels with the edges of said channel member extending into the spaced apart slots in the upper edges of said side panels;
and
C. A corrugated board seat and back panel, said panel being of a width greater than the distance between said two side panel edges when the corrugated board sheet is in its box-like configuration and having one end inserted into said front panel slotting and its extensions into the side panels, being bent 90 degrees to extend up over the upper edge of the front panel and further simularly bent to lay on the upper edges of the lower side panels edge portions, and on said channel member;
being further bent back upon itself for insertion into the slotting where the angular intermediate edges join the said lower side panel edge portions, and further laid over the angular intermediate edges to extend up over the higher side panel edges for securing thereon.

3 more elements

Dependencies are inferred from the claim text.

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Abstract

A backed chair assemblable from a group of corrugated board elements all of which, before asssembly, may be flattened for convenient packaging, said chair comprising:

A. Vertical means to interlockingly receive and position a seat support and a seat and back member, said means being formed from a first rectangular planar sheet of corrugated board, said first sheet being cut out to provide two side edge portions spaced from each other and an intermediate portion of lower height than said side edge portions, said sheet being bent along four vertical lines to form 90 degree corners, with one side edge folded back and secured to the other side edge to form a closable and openable set of four panels, comprising a lower front panel, two parallel spaced apart lower forward partial side panel portions, and a higher rear panel and higher partial rear side panel portions, the last said panel portions being angled down to the lower forward partial side portions, each of said four panels having upper and lower edges, each of the lower forward partial side panel portion being transversly slotted downwardly from its upper edges in two places spaced apart from each other and from the lower front panel, and further being slotted transversly downwardly from the points where the higher partial rear side panel portions join the lower forward partial side edge portions, and the lower front panel being transversely slotted into the adjoining two lower side panels below the upper edges of the front and lower forward partial side panels, the upper edges of the latter side panels between the two spaced apart transverse slottings being recessed to the extent of the thickness of the corrugated board;
B. A seat and back support, said support comprising a rectangular corrugated board at least slightly. greater in width than the distance between the side panels when the said vertical means is in the folded position, the said support being of a height equal to the total dimensions of the spacing between the two spaced apart transverse slottings and the depths of each pair of slottings on one side panel one end edge of, said seat and back support being inserted into one of the two pairs of spaced apart transverse slottings, said support being bent to a 90 degree angle to seat in said recessed upper edges of the side panels, and further bent to a 90 degree angle for insertion of its other end edge into the second spaced apart pair of transverse slottings;
and
C. A seat and back member formed of a rectangular corrugated board having a width at least slightly greater than the distance between the side panels when the vertical means is in its folded position, one end of said seat and back member being inserted in the slotting in the lower front panel, said member being bent at right angles upardly first to extend the seat and back member up over the front panel, and then on the upper side panel edges;
said seat and back support member further being doubled back upon itself for insertion into the slotting where the lower forward partial side panel portions and higher partial rear side panel portions;
join each other, and to extend further over the upper edges of the higher partial rear side panel portions for securing in an upper region thereof, thereby to form a supported seat and chair back.

3 more elements