U.S. patent number 3,592,143 [Application Number 04/786,895] was granted by the patent office on 1971-07-13 for knockdown table.
Invention is credited to Martin Krone.
United States Patent |
3,592,143 |
Krone |
July 13, 1971 |
KNOCKDOWN TABLE
Abstract
A knockdown table formed of a cardboard blank which has been
adapted by means of a plurality of fold lines and score lines in
such a way that when the blank is folded along said fold lines a
table having an imperforate top will be defined thereby, the score
lines defining removable sections which, when removed, are
effective to form the legs of the table, and are further adapted to
be delineated into corner locking and supporting members which will
underlie and act as support for the resulting standing table
structure.
Inventors: |
Krone; Martin (New york,
NY) |
Family
ID: |
25139883 |
Appl.
No.: |
04/786,895 |
Filed: |
December 26, 1968 |
Current U.S.
Class: |
108/115;
297/440.12; D6/349; D6/368 |
Current CPC
Class: |
A47B
3/00 (20130101); A47B 2220/0083 (20130101) |
Current International
Class: |
A47B
3/00 (20060101); A47b 003/06 () |
Field of
Search: |
;108/111,115,154
;211/135,73 ;248/459,174,152 ;297/442,457 |
References Cited
[Referenced By]
U.S. Patent Documents
Primary Examiner: Zugel; Francis K.
Claims
What I claim is:
1. A foldably constructible table comprising a construction blank
fabricated of cardboard having an elongated, rectangular shape, at
least two transversely oriented first and second fold lines in said
blank delineating two leg-forming panels at opposite ends thereof
and an intermediate imperforate tabletop panel, at least two
longitudinally oriented third and fourth fold lines respectively
located in said blank adjacent each longitudinal edge thereof
delineating corner-forming flaps foldable along each of said fold
lines into cooperating positions with said leg-forming and tabletop
panels so as to form corners along each of the longitudinal extents
of said panels, a cooperating pair of outwardly diverging fold
lines in said blank at each of the four intersections of said
first, second, third and fourth fold lines and delineating a
separate one of four triangular tuck-in flaps operatively effective
to be projected to the interior of the volume bounded by said table
following the folding construction thereof, and in each said
leg-forming panel a shaped centrally located score line delineating
a removable section effective to form legs therein upon said
removal therefrom, at least one said removable section being
delineated into plural tabs each having regular sides and each
having a notch therein of an extent adapted to accommodate one said
inwardly projected tuck-in flap so as to maintain said inwardly
projected position thereof, whereby said table is foldably
constructible from said blank.
2. A blank for a foldably constructible table as defined in claim 1
wherein each of said pair of outwardly diverging lines terminates
in slots extending inwardly into said construction blank from the
longitudinal edges thereof.
Description
BACKGROUND OF THE INVENTION
1. Field of the Invention
This invention relates generally to a knockdown construction, and
more particularly, to a foldably constructible table formed of a
suitably adapted cardboard blank.
2. Description of the Prior Art
Knockdown boxes of cardboard construction are of course well known.
They are formed of a cardboard blank which has been suitably
adapted with fold lines, cut lines or score lines, in a particular
sequence, in such a way that when folded a box will be formed
having the desired characteristics. One of the advantages of this
knockdown-type construction is that the boxes may be stored in the
flat, unfolded blank condition, ready for quick assembly into a box
when needed.
It would be equally desirable and advantageous, if a knockdown
construction could be provided which would fold into a table.
However, a table of this type would, of necessity, have to be of
sturdy construction, since it is of relatively flimsy cardboard
construction.
SUMMARY OF THE INVENTION
It is, therefore, among one of the principal objectives of the
invention to provide not only a knockdown table formed of a
suitably adapted cardboard blank, but also a table which, when
assembled, is of sturdy construction.
In accord with the invention, a foldably constructible table, i.e.
knockdown table is provided, formed of a cardboard blank, which has
been adapted by means of a plurality of fold lines and score lines,
in such a way that when the blank is folded along said fold lines a
table having an imperforate top will be defined thereby, the score
lines defining a pair of opposing removable sections which, when
removed, are effective to form the legs of the table and which,
removable sections, are further adapted to be delineated into
corner locking and supporting members which will underlie and act
as support for the resulting standing table structure.
BRIEF DESCRIPTION OF THE DRAWING
The invention will be hereinafter more fully described with
reference to the accompanying drawing, in which:
FIG. 1 is a plan view of a blank utilized in the assembly of a
table pursuant to the present invention;
FIG. 2 is a fragmented, front view, showing the blank of FIG. 1 in
the folded, compact shipping condition;
FIG. 3 is a top plan view of a corner-supporting member for the
invention table;
FIG. 4 is a fragmented, exploded view, in perspective, of a
corner-supporting member and its associated table corner to be
supported;
FIG. 5 is a view, similar to FIG. 4, except as here shown the
corner-supporting member is in the attached position;
FIG. 6 is a view in perspective of the table formed from the blank
of FIG. 1;
FIG. 7 is a top plan, fragmented, partially sectional view of table
shown in FIG. 6; and
FIG. 8 is a front view of the table looking towards a pair of
supported corners from within the interior of the table.
DESCRIPTION OF THE PREFERRED EMBODIMENTS
Referring now to the figures of the drawing, FIG. 1 illustrates a
blank 10 of fluted cardboard of conventional construction, the
blank as here shown being essentially rectangular in configuration.
The blank 10 is provided with a pair of parallel opposing
transversely oriented first and second fold lines 12 and 14,
respectively, which, in turn, define a pair of parallel opposing
leg-forming panels 16, and an intermediate imperforate tabletop
panel 18 therebetween. The blank 10 is also provided with a pair of
parallel opposing longitudinally oriented third and fourth fold
lines 20 and 22, respectively, said third and fourth fold lines
being inwardly directed from and adjacent to the parallel opposing
longitudinal edges 24 and 26 of the blank, and defining, in turn,
corner-forming flaps 28 and 30. Each corner-forming flap 30 is
intermediate a pair of corner-forming flaps 28, so that
corner-forming flaps 30 bound tabletop 18 or its two longitudinal
sides formed by fold lines 20 and 22 and corner-forming flaps 28
bound each leg-forming panel 16 on its two extensions of
longitudinal fold lines 20 and 22. Each corner-forming flap 28 and
30 is foldable, along the respective portion of the longitudinal
fold line it bounds, into cooperating positions with the
leg-forming panels 16 and table top panel 18 so as to form corners
for the table as will be subsequently more fully shown.
A cooperating pair of outwardly diverging fold lines 32 are
provided at each of the intersections 34 of the first, second,
third and fourth fold lines 12, 14, 20 and 22, each fold line 32
terminating in a slot 36 in linear relation therewith, slots 36
being cut into the longitudinal edges 24 and 26 of the blank 10.
Thus, fold lines 32 and slots 36 define four triangular tuck-in
flaps 40.
In each leg panel 16 there is provided a generally U-shaped score
line 42 which defines a removable section 44, the removal of which
will define legs for the table, as will be seen. Each section 44,
in turn defines a pair of tabs 46, bounded by regular (as opposed
to irregular) score lines, which will ultimately form the corner
supports for the table as will be also seen. Each tab 46 is
generally triangular-shaped, and at the apex of each is provided an
inwardly directed notch 48 defined by suitable score lines. In
other words, when tabs 46 are removed from the blank along their
respective score lines on the blank, they will appear as at FIG. 3.
Selvage pieces 50 are also provided in removable section 44
immediately alongside tabs 46; however, these are not necessary to
the invention and could be omitted from removable section 44.
A medial transverse fold line 52 is also provided on blank 10, for
a reason now to be discussed. When it is desirous to store or ship
the table blanks 10 in folded, compact condition, what is done is
to first fold the opposing leg-forming panels 16 and their
respective corner flaps 28 inwardly upon themselves along fold
lines 12 and 14, and then the blank is folded inwardly again along
fold line 52 to yield the flat compact folded blank of FIG. 2. This
also serves to protect the removable sections 44 and keep the tabs
46 in a flat condition, since it is an important feature of the
invention that the tabs 46 be not bent out of shape.
Describing now the assembly of the table 100 of the invention, and
with reference specifically to FIGS. 1, and 3--8, inclusive, with
the blank in the condition as shown in FIG. 1, the removable
sections 44 are removed from the blank 10 forming tabs 46 with the
pieces of selvage 50 being discarded. As mentioned, tabs 46 are
triangular in shape and have an inwardly directed notch 48 provided
at the apex of the triangle along the perpendicular bisector
thereof (not shown). Also as mentioned, it is important that tabs
46 not be bent out of shape; this is assured by taking the tab 46
from flat removable section 44.
The table 100 is then formed by folding the blank along the various
fold lines (except fold line 52). To wit, the blank 10 is folded
inwardly along longitudinal fold lines 20 and 22 at about
90.degree. angles. Next, in sequence, each tuck-in flap 40 is
pushed inwardly, i.e. towards what will be the interior of the
table, until the corner-forming flaps 28 and 30 are in edge-to-edge
abutment. While the flaps 28 and 30, with tuck-in flap 40 inwardly
projected therebetween, are so related and held in place, the tab
46, via notch 48 being slidingly fitted over tuck-in flap 40, locks
the corner 102 in position. By virtue of the regular triangular
shape of tab 46, the regular edges of two of the sides of the
triangle abut and underlie the respective corner which it is
locking and thus tab 46 acts as a corner-supporting member for the
standing table. It can now be seen why it is important that tab 46
be maintained in a flat condition, and that is to assure a secure
locking of tuck-in flaps 40 as well as furnishing support to each
corner and the table thereby by the edgewise abutment described
hereinabove. It is to be noted that when assembled, corner-forming
flaps 28 and leg-forming panels 16 form the four legs 104 of the
table, mentioned earlier.
Thus, in accordance with the invention, a foldably constructible
table is provided which is not only easily assembled but is also of
a sturdy construction by virtue of the feature of the
corner-locking tab 46 which also acts as a supporting member for
the standing table. The invention knockdown table is particularly
suitable for picnics, camping trips, for children's games, for card
playing on commuter trains; in other words, in any situation where
a temporary table of light but strong construction is required.
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