U.S. patent number 3,853,073 [Application Number 05/401,664] was granted by the patent office on 1974-12-10 for table-like display furniture unit and stackable modules thereof.
This patent grant is currently assigned to Paul Flum Ideas, Inc.. Invention is credited to Paul L. Flum, Dewalt W. Fowler.
United States Patent |
3,853,073 |
Flum , et al. |
December 10, 1974 |
TABLE-LIKE DISPLAY FURNITURE UNIT AND STACKABLE MODULES THEREOF
Abstract
Molded plastic tables may be paired to form stackable modules,
with the lower table unit of the pair inverted so that its
upward-extending legs receive the leg ends of an upright table
unit. The table units so paired each have table surfaces with an
outward slanting apron, which extends downwardly at the table
corners to form the outer surfaces of hollow legs. Inner leg
portions are vertical and intersect at right angles beneath the
table corners, with hollow lower leg ends provided with
interfitting plugs and sockets. For stacking the paired modules,
small posts and wells are aligned along opposite edges of the table
surfaces; those of the downward presented table surface interfit
with the posts and wells of an upright table unit beneath.
Inventors: |
Flum; Paul L. (University City,
MO), Fowler; Dewalt W. (Creve Coeur, MO) |
Assignee: |
Paul Flum Ideas, Inc. (St.
Louis, MO)
|
Family
ID: |
23588688 |
Appl.
No.: |
05/401,664 |
Filed: |
September 28, 1973 |
Current U.S.
Class: |
108/91; 206/507;
108/53.1 |
Current CPC
Class: |
A47B
87/002 (20130101) |
Current International
Class: |
A47B
87/00 (20060101); B65d 019/49 (); B65d
021/06 () |
Field of
Search: |
;108/53,90,91
;312/108,111,284 ;206/503-509,511 ;220/97 ;211/120 |
References Cited
[Referenced By]
U.S. Patent Documents
Primary Examiner: Nunberg; Casmir A.
Claims
We claim:
1. For use as display furniture and the like, the base and
stackable module comprising
A. a table-like base unit having
a table top portion terminating in a downward and somewhat outward
slanting apron portion, and
having an even number of tapering legs whose outer surfaces are
downward continuations of the outer surfaces of said apron portion,
the legs having vertical inner portions beneath said table top
portion,
the legs further having hollow lower ends, and
means formed perpendicular to said table top portion to align with
a similar module and to resist transverse displacement therefrom,
said means comprising
a plurality of projecting post means and a corresponding plurality
of inwardly extending post-accommodating well means positioned
along lines adjacent to a first pair of opposite edge portions of
said surface,
the post and well means along one of said lines being located at
spacings from one of the edge portions intermediate thereto which
corresponds to the spacings, measured from the same intermediate
edge portion, of corresponding post and well means located along
the other of said lines, and
B. a plurality of stackable modules located thereon, each
comprising two units, each being formed similarly to said
table-like base unit, with plug means formed in the lower ends of
half of said legs and socket means formed in the lower ends of the
other legs,
whereby when one of said units is inverted to present its hollow
leg ends upward, the leg ends of a similar unit may be interfitted
thereto, thereby to form a module whose sides are windowed by the
apron and leg portions, in combination with
C. a planar shelf whose thickness is at least twice the height of
said post means,
the shelf having post-accommodating recesses spaced to correspond
with the spacings of the post means of the said module,
whereby when the post means projecting downward from one said
module is aligned with the upward extending posts means of another
of said modules or of said table-like base unit therebeneath, said
planar shelf may be interfitted on said post means to extend
horizontally outward, for support at the same level by a similar
base and stackable module.
2. A table-like molded plastic unit adapted for pairing with a
similar unit to comprise a stackable windowed module,
comprising
a table top portion terminating in a downward and somewhat outward
slanting apron portion, and
having an even number of legs whose outer surfaces are downward
continuations of the outer surfaces of said apron portion, the legs
having vertical inner wall portions beneath said table top
portion,
whereby the legs taper broadeningly downward from upper ends,
the legs further having hollow lower ends, and
plug means formed in the lower ends of half of said legs and socket
means formed in the lower ends of the other legs, wherein
the said socket means includes flange wall portions formed inwardly
of and extending substantially vertically within the lower ends of
said slanting outer surfaces and joining the vertical inner wall
portions of the legs in which said socket means are located, and
wherein
the said plug means include flange wall portions similarly formed
in the lower ends of the legs in which said plug means are located
and joining the vertical inner wall portions thereof,
the said flange wall portions and vertical inner wall portions of
said plug means projecting below the said slanting outward surfaces
of said leg portions in which the plug means are located,
whereby the interfit of the plug portions of one said unit into
socket portions of a similar unit gives the legs of the two units,
so interfitted, bending resistance to react vertical loads in the
manner of beam columns stabilized at the table top portions by the
apron portions.
3. For use with similar modules, as display furniture and the like,
a stackable module comprising
a pair of table-like integral molded units, each having
legs whose ends are interfitted with the leg ends of the other
unit, each further having
a planar table-like surface adapted to be positioned horizontally,
and having
means formed perpendicular to said planar surface to align with a
similar module and to resist transverse displacement therefrom,
said means comprising
projecting post means and inwardly extending post-accommodating
well means positioned along lines adjacent to a pair of opposite
edge portions of said surface,
the said post and well means along one of said lines being located
in a succession at spacings, measured from a first of the edge
portions intermediate thereto, which correspond with the spacings,
measured from the other intermediate edge portion, of the reverse
of said succession of post and well means, and
the said post and well means along the other of said lines having
identical spacings and succession,
whereby on inverting one of said modules, its post and well means
may be aligned and mate with corrsponding well and post means
therebeneath, thereby permitting vertically stacked alignment.
4. A stackable module as defined in claim 3, wherein the said
lines, along which said post and well means are formed, are
parallel, and
the said successions of the post and well means along said lines
are identical as measured from said first intermediate edge
portion,
whereby on inverting one of said modules and offsetting it from a
similar upright module at a lower level, its post and well means
may mate with corresponding well and post means of such lower level
module in an open criss-cross alignment.
5. The combination of a stackable module as defined in claim 4,
and
a planar shelf whose thickness is substantially twice the height of
said post means,
the shelf having post-accommodating recesses spaced to correspond
with the spacings of the post means of the said module,
whereby, when said module is inverted and its post means aligned
with those of a similar upright module therebeneath, said planar
shelf may be interfitted on the post means of said two modules to
extend horizontally outward therefrom.
Description
BACKGROUND OF THE INVENTION
Stackable modular units, suitable for display fixtures, home
furnishings and the like, have heretofore been constructed in a
variety of ways. If constructed so that each module is integral,
the modules may be too bulky for packing and shipment, or may lack
sturdiness. One successful unit, shown in U.S. Pat. No. 3,429,428,
is a windowed, substantially box-shaped stackable modular
structure, each module being made up of four interconnected side
panels, with interposed upper and lower surfaces. A demand exists
for modules of non-rectilinear, more fluid shape, which require
fewer assembly steps than such panel structures, and which are less
bulky than integral modules.
SUMMARY OF THE INVENTION
The principal object of the present invention is to provide, for
display fixtures and for furniture purposes, molded table-like
units adapted for pairing to form windowed modules whose form is
more flowing than the form of rectilinear units, which modules may
be stacked and arranged in a variety of interesting shapes and
patterns. Another purpose is to provide a molded table-like unit
with leg and foot provisions which have such strength as, on
interfitting, to serve as strong, bend-resistant load-bearing
members of said windowed modules. Still another purpose is to
provide the horizontal surfaces of such table-like units and
modules with interfitting provisions for stacking, to resist
transverse forces and provide either for vertical arrangements or
for open criss-cross arrangements, and which further may hold
outstanding planar shelves extending between modules.
Summarizing the invention generally, without limiting its scope, we
provide basic table-like molded plastic units which are adapted for
pairing with similar units to provide stackable windowed modules.
The rectangular table top portion of the preferred unit has a
downward, somewhat outward slanting apron, which continues downward
at the corners to merge into and provide outer surfaces for hollow
table legs. The legs have vertical inner portions intersecting at
right angles substantially beneath the corners of the table
portion, so that the legs taper broadeningly downward from pointed
upper ends, permitting both graceful shapes and easy molding.
Except for those table units whose feet may rest on the floor and
which therefore are not paired in modules, two of the legs of each
unit to be paired have at their lower ends integrally formed
downward extending plugs, while the other two legs have integral
sockets. When one such unit is inverted, so that its leg ends are
presented upwardly, an upright unit may have its legs interfitted,
to form a paired module whose sides are windowed by the apron and
leg portions of the units so joined.
Small aligned posts and wells are provided along opposite edges of
the table surfaces, at locations hereafter described. Their
interfit permits stacking of the paired modules on the table-like
surfaces of the units beneath, in either vertical alignment or in
an open criss-cross arrangement. Alternately, if it is desired to
use horizontally outstanding shelves to connect groups of modules
spaced horizontally apart, such shelves may be held between
vertically stacked modules so arranged that their outstanding posts
align with each other and are anchored together by bores in the
shelves.
The interfitted plug and socket leg end projectons permit two
table-like units to be readily assembled into a module, which is
made self-aligning with similar modules by the post and well
provisions. These features are utilizable with table-like units of
varying shapes.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a cabinet projection, partly broken away, of a typical
table-like unit embodying the present invention.
FIG. 2 is a completed bottom view thereof.
FIG. 3 is a fragmentary vertical sectional sketch showing assembly
of two intermediate-positioned table-like units into a module, its
vertical stacking on a lowermost unit, and an open criss-cross
arrangement of an uppermost unit thereon. The sections through all
the units corresponds to line 3--3 of FIG. 1.
FIG. 4 is a fragmentary section taken along either line 4--4 or
line 4"--4" of FIG. 3.
FIG. 5 is a fragmentary vertical sectional sketch showing two lower
table-like units stacked in a reversed alignment and arranged to
hold between them an outwardly extending planar shelf. The portions
seen correspond to line 5--5 of FIG. 1.
FIG. 6 is a fragmentary section taken along line 6--6 of FIG.
5.
DESCRIPTION OF THE PREFERRED EMBODIMENT
The basic table-like unit utilized in the present invention is the
molded plastic table 10 seen in the cabinet projection FIG. 1 and
the bottom view FIG. 2. It includes a rectangular table top portion
11 terminating in a downward and somewhat outward slanting apron 12
which includes arched portions 13 merging downwardly into leg outer
surfaces 14 which are downward continuations of the outer surfaces
of the apron portion 12.
The said legs, generally designated 15, are hollow and have
vertical inner portions 16 intersecting at right angles at and
beneath the four corners 18 of the table top portion 11. Inasmuch
as the leg outer surfaces 14 slope somewhat outward, the legs 15
taper broadeningly downward from substantially pointed hollow upper
ends 20 to the hollow lower ends 21. It will be apparent that loads
applied to the table portion 11 and resisted by the legs 15 would
ordinarily have a tendency to bend outward any legs whose upper
ends were pointed. However, the apron 12 and its arched parts 13 so
merge with the leg outer surfaces 14 as to distribute bending loads
through the arched apron parts 13, so that there are substantially
no bending loads whatsoever at the pointed upper ends 20 of the
legs 15. The apron 12 and arched parts 13 preferably have a lower
margin 17, thickened internally to almost vertical, which gives
further bending strength to the table unit 10.
The table units 10 are adapted for pairing with similar units so
that the pair comprises a stackable windowed module generally
designated 24, as shown schematically in FIG. 3. In each such
module 24 windows generally designated 25 in the module sides are
bounded by the apron portions 12, arched portions 13, and legs 15
of the paired units 10, the lower of which is inverted with its
lower leg ends 21 presented upwardly and the upper of which is
interfitted therein as hereinafter described.
Each of the table-like units 10 has two legs 15 in which socket
means generally designated 27 are formed. Said socket means 27
include vertical flange wall portions 28 inwardly of the leg outer
surfaces 14 commencing near their lower ends 21 and extending to a
level flush therewith. Together with the corresponding lower ends
of the vertical inner leg portions 16, they form the sockets 27 to
substantially square shape, as shown in FIGS. 1 and 2. An L-shaped
groove 29 between the flange wall portions 28 and the leg outer
surfaces 14 at their lower ends 21, avoids undue thickness of such
leg ends which might otherwise result in warpage on cooling of the
molded plastic material.
Except where such a table-like unit is used to rest on the floor,
as with the unit generally designated 10' shown in FIG. 3, the
other two of its legs 15 are provided with projecting plug means
generally designated 30, which are of such height as to
substantially fill the socket means 27 as seen in FIGS. 1 and 3.
The plug means 30, like the socket means 27, have vertical flange
wall portions 31 inward of the sloping outer leg surfaces 14,
commencing at such a height as will cause them to be presented
immediately inward of the socket means 27 of a similar unit. Above
a level b corresponding to the level at which the leg outer
surfaces 14 terminate, the flange walls 31 and the walls of the
vertical leg inner portion 16 are relatively fairly thick, to
correspond substantially in outer dimensions to those to the socket
means 27. At the level b, however, the lowermost portions of each
inner leg wall 16 is provided with an inward step 33, which leave
the plug walls 34 thin enough to fit within the socket means 27. To
afford tighter fit, if desired, one or more of the plug walls 34
may be provided with slender, shallow, vertical ribs 35, which
serve, on interfitting with socket means 27, to bind the plug means
30 tightly in place. L-shaped grooves 36 are provided between the
vertical flange wall portions 31 and the leg outer surfaces 14
outwardly thereof, similar to but broader than the L-shaped grooves
29 outwardly of the socket means 27.
Referring to the lower part of FIG. 3, special table units 10' are
provided to rest on the floor; and these are formed without the
downward projecting plug walls 34. The same molding dies may be
used if desired, either by slight change of the die portions to
eliminate the walls 31, 34 or by forming them initially and cutting
them off at the level b.
If the molded plastic tables 10 are to be utilized as individual
tables, without stacking similar units thereon, or if they are to
be used as the uppermost units of stacked modules, the portions
heretofore described will suffice. However, for stacking it is
important to make provisions for alignment with similar units
paired to form modules, and to assure such alignment so as to
resist transverse displacement therefrom. For this purpose, the
rectangular table top portion 11 is molded with a plurality of
projecting post means and a corresponding plurality of inwardly
extending post accommodating well means as now to be described.
Referring to FIG. 1, the pair of opposite edges marked d, f are
referred to as the first pair of opposite edges, and the edges g, h
are referred to as intermediate edges. Parallel lines j, k are
located at equal spacings inwardly of the edges of d, f. Along said
lines are located first wells 38, second wells 39, first posts 40
and second posts 41. The wells 38, 39 are fairly shallow
depressions in the table top 11, formed to nearly cylindrical
cross-section but with a draft angle which opens upwardly, for ease
of molding. The posts 40, 41 are molded to project upward from the
table surface 11; they are formed to nearly cylindrical
cross-section but tapering toward the table surface 11 for ease of
molding, and are sized slightly smaller, in diameter and height,
than the diameter and depth of the wells 38, 39 to assure easy fit.
Measured from the intermediate edge g, along lines j and k, first
wells 38 are formed at a spacing m, first posts 40 at a spacing o,
second wells 39 at a spacing p and second posts 41 at a spacing q.
As to the post and well elements 38, 39, 40 and 41 along both said
lines j, k, the succession of spacings measured from the second
intermediate edge h is the reverse of the spacings measured from
the edge g; that is, the spacing m of the first wells 38 from the
edge g equals the spacing of the second posts 41 from the edge h;
the spacing o of the first posts 40 from the edge g equals the
spacing of said second wells 39 from the edge h, etc.
Referring now to FIG. 3, a special table unit 10' (formed without
downwardly projecting plug walls 34) is shown as resting on a
floor. Inverted over its table top surface 11 is the table top
surface of a paired module comprising two of the molded plastic
tables 10. Interfitted on the post 41 of the lower unit 10' is one
of the wells 38 of the inverted table unit 10. The parts as seen
are taken along line 3--3 of FIG. 1. It will be recognized that if
the section were taken instead through the well 39 of FIG. 1, a
post 40 of the inverted module 10 would project downward therein. A
similar interfit of upward projecting posts near each of the four
corners of the lowermost unit 10', with wells of the inverted unit
10, will exist at each of the four corners.
This interfit is illustrated in FIG. 4, which illustrates the four
interfitting post and well provisions along each of the lines j, k
which achieve precise alignment and provide resistance against any
forces which might otherwise displace the interfitted units, or
modules thereof, from each other.
One of the advantages in having the succession of wells and posts
38, 40, 39 and 41, along both edges d and f, in the same succession
measured from an intermediate edge g, is the feature of allowing
open criss-cross arrangements of modules made of the paired units
10. This is seen from the upper portion of FIG. 3, in which a post
41 on the upright table unit 10 likewise mates with a well 38 on
the inverted unit thereabove, along a line 4'--4' whose interfit is
the same as shown in FIG. 4. In this instance, however, the
inverted unit is shifted so that instead of being stacked directly
above the units therebeneath, it extends outwardly therefrom to
bridge across to another grouping (not shown) of an underlying
table unit 10' resting on the floor and a paired module of two
table units 10 thereupon. There is no limit to the extent of such
an open criss-cross arrangements of units; these add both utility
and visual interest to a grouping of such paired modules.
By having at least one post 40, 41 at each of the corners of the
table unit 10, it is possible to make combinations of the units 10
with outstanding shelves, such as the typical planar shelf 43 as
shown fragmentarily in FIG. 5. Before discussing characteristics of
such shelf 43, the stacked arrangement of FIG. 5 will be explained.
Inverted over the molded table-like unit 10' used on the floor is a
module made up of two typical molded table units 10, the lower
being shown fragmentarily and the upper being fragmentarily
suggested in dashed lines. The presentation of FIG. 5 is
schematically from the front as in FIG. 1, with portions of the
lowermost unit 10' broken away back to the posts 40. The unit 10
inverted thereover is in position reversed from the interfit of
FIG. 3, so that its posts 40 are presented directly above and in
alignment with the posts 40 of the lower unit 10'. FIG. 6, taken
along line 6--6 of FIG. 5, shows that the other set of posts 41
will likewise be in alignment, with the wells 38, 39, spaced from
the posts 40, 41 as shown.
The planar shelf 43 may be of any length, and its width equals the
length of the table edges d, f. Its thickness is preferably at
least equal to the combined heights of the posts 40. It has
cylindrical bores 44 spaced from each other at a spacing
corresponding to that of the posts 40, 41 from each other, for
interfit as shown in FIG. 6. Preferably the shelf 43 extends not
only outward, to the right as shown in FIG. 5, but also inward to
an edge 45 at the middle of the table surfaces 11, to permit use of
a corresponding shelf at the left side. In absence of such
corresponding shelf, a flat filler element 46, of the same width
and thickness as the shelf 43 and having similar bores 44, may be
used to fill out the left side space. It is understood that the
right end of the outstanding shelf 43 will be formed similarly and
fitted between similar stacked units, not shown, at the end of the
shelf 43. For the support of such shelves, it is important that
there be at least one post 40, 4l at each corner of the units 10,
10'.
If the planar shelves 43 are relatively long and thin, their
bending deflection under load may tend to raise their inner edges
45, thus tending to pry apart the superimposed units 10, 10'. In
such case a simple screw (not shown) may be applied, between the
bores 44 and edges 45, to tie the shelves 43 to the table surfaces
11 above and below.
For table units 10, 10' which are to be used as uppermost surfaces,
regardless whether many units 10, 10' or only one are utilized,
such uppermost surfaces may be formed free of any post and well
provisions 38, 39, 40, 41.
It will be recognized that easy molding, without need for movble
cores, is accomplished by the configuration of the basic table unit
10, of its hollow legs 15 tapering from nearly pointed upper ends
20 to the squared sockets 27 and plugs 30, of the apron reinforcing
margins 17, and of the posts and wells 38, 39, 40, 41. Various
alternatives may be utilized. For example, if no shelves 43 were to
be used, in some instances a single post and a single well along
each of the lines j, k might suffice. If post-to-post alignment for
use with shelves as shown in FIGS. 5 and 6 was not required, it
would not be necessary to measure the sequence of posts and wells
38, 40, 39, 41 from the same intermediate edge g, and if open
criss-cross stacking, as shown in the upper portion of FIG. 3, was
not to be used, it would not be necessary to locate them along
straight lines. In any event, as will be obvious, the post and well
means should be in a succession of spacings, commencing from an
edge of said table-like surface nearest the first of said post and
well means and ending at an edge adjacent to the last thereof,
which corresponds with the spacings, measured from said latter
edge, of the reverse of said succession. A greater number, for
example three, post and well provisions might be utilized along
each of the lines j, k. It would be obvious to change the shapes of
the interfitting provisions; and as used in the claims, the terms
"post means" and "well means" are to include other shapes of
integral projecting and mating sunken provisions.
Further, as used herein, the phrase "table-like display furniture
unit" includes units for furniture, display fixtures, window
displays, merchandising units for products regardless of type,
convention exhibits, and units for both decorative and functional
purposes. In the claims certain terms are to be recognized as used
only in a relative sense; thus the upper ends of the legs which
merge into the table top, described as pointed, will be understood
to be only relatively so; and the description of their inner
portions as being vertical will be recognized as subject to usual
draft angles. These, as well as variations in structure and
conformation, will be apparent from this disclosure to persons
skilled in the molded furniture art.
* * * * *