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Патент USA US3077022

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Feb. 12, 1963
E. R. SPERAW
3,077,012
COUNTER TOP CONSTRUCTION AND THE LIKE
Filed Dec. 3. 1959
INVENTOR:
Erv/n 2.5/2eraw
BY. W” 7V7?
ATTORNEK
tats
3,@?7,@l2
Patented Feb. 12, 1&53
1
3,677,612
CiZtUNTEl-R TS? ?QNEE‘itUCTlGN AND THE LIKE
Ervin R. Eperaw, 233 Second Ave, Duly (lity, Calif.
Filed Dec. 3, 1959, Ser. No. 857,146
2 tllaims. (U. 2Q-74)
The above and other objects of the invention will be
apparent from the ensuing description and the appended
claims.
Certain forms of the invention are illustrated by way
of example in the accompanying drawings, in which:
FIGURE 1 is an exploded view in transverse section of
a plastic covered counter top or the like and a mating
This invention relates to counter tops, table tops, and
edging strip in accordance with the present invention.
other similar types of construction. It has particular
application to the edging, trim or molding employed for
FiGURE 2 is a view similar to FIGURE 1 but showing
the edges of counter tops, table tops, vanity tops and the 10 the edging strip in place.
FIGURE 3 is a fragmentary, perspective view showing
like, such tops being formed from a wood core or base
more clearly the attractive appearance of the edging strip
and a plastic surface layer of Formica or the like.
of the present invention when in place.
(Formica is a trademark of The Formica Company for
FIGURE 4 is a fragmentary, perspective view showing
a hard, laminated plastic material which is available in
many colors, shades and patterns. Other suitable plastic 15 how the edging means of the present invention lends it
self to both outside and inside corners along a counter top
surfacing materials may be used for the purpose.)
or the like.
For simplicity of description counter tops will be re
FIGURE 5 is a view similar to that of FlGURE 2 but
ferred to primarily but it will he understood that the in
in which the tongue and groove are reversed.
vention is equally applicable to table tops, to vanity tops
Referring now to the drawings and preliminarily to
and to other similar articles. Also it is applicable to 20
vertical or tilted panels but its principal application is to
FIGURES l and 2, a counter top is shown at it}. It will
horizontal members such as counter tops.
In the construction of counter tops, a very popular type
of construction consists of a body, core or base of wood,
be understood that this may be a table top, the top of a
vanity or the top of any other article, or even a vertical
after.)
along an edge at 14 to form a tongue 15.
or tilted panel. An edging strip constructed in accord
usually plywood, to which is bonded a smooth, hard, rc 25 ance with the invention is shown at 111. The counter top
lit has a base or core 12; which is usually of plywood but
sistant layer of plastic material such as the abovemen
tioncd Formica. This type of construction has several
may be of any other material, such as solid natural wood
or a composition material. Applied thereto is a layer,
advantages. it is hard, smooth and resistant to scratches,
indicated by the reference numeral 13, of plastic material
abrasion and tire. It eliminates joints such as exist be
tween tiles. it is available in a great variety of colors, 30 such, for example, as Formica or any other suitable, hard,
usually laminar plastic surfacing material. The plastic
shades and patterns; for example it can be made to simu
layer i3 is bonded to the base or core 12 by means of a
late wood, marble, etc.
suitable adhesive. Pressure and an elevated temperature
However, there exists a difficult problem in providing
may be employed to effect a secure bond.
an edging, strip or border for counter tops of this type.
The core or base 12 and plastic layer 13 are cut away
(For convenience, the term “edging” will be used here
In order that
the tongue 15 may have a precise vertical dimension or
One type of edging consists of a metal strip ?xed to
thickness, the core is undercut at 115.
each exposed edge. This is not desirable because, among
It is an important feature of the present invention that
other things, the metal catches dirt.
Another type of edging consists of a strip of the same an o the core 12 is cut away both at the top at 14- and at the
bottom at 16, because plywood and other structural ma
plastic surfacing material which is applied to the exposed
terials employed for the purpose vary slightly in actual
edge or edges of the counter top. This is disadvantageous
thickness. It is important in connection with the present
because it requires rather expensive equipment and a con
invention that the edging strip 11 be tightly and securely
siderable degree of skill. Also, it forms a ?at vertical
edge with no lift or rise to prevent liquids that have been 45 mounted. Nevertheless, it should be easy to mount the
edging strip. I achieve this dual object, in part, by cut
spilled on the counter top from overflowing the edge.
ting away the core 12 both at the top at 114 and at the bot
Also it leaves an unsightly dark line at the junction with
tom at 16 in such manner that the tongue 15 has a precise
the top.
vertical dimension or thickness and so that the dimension,
A more desirable but more expensive edging procedure
“d” (that is the vertical distance between the top surface
is carried out by an operation known as “post forming.”
of the tongue 15 and the top surface of the plastic layer
Post forming consists of heating the plastic surfacing
13) is also precise.
material and subjecting it, While heated, to pressure
Stat-ed otherwise, an undercut is provided at 16 whose
against a mold to form a raised and rounded edge. This
vertical dimension will vary from one counter top to an
has the advantage that it provides a smooth, round raised
edge which prevents liquids spilled on a counter from 55 other in accordance with variations in thickness of the
core material. I therefore provide dimensions with very
overflowing onto the floor. However, post forming edges
close tolerances where they are needed, namely, in the
is an expensive procedure. Also if there is a corner
thickness of the tongue 15 and in the vertical distance d
which exposes two edges, one of the exposed edges can
from the upper surface of the tongue 15‘ to the upper sur
not be post formed.
It is an object of the present invention to provide an 60 face of the plastic layer 13. The vertical dimension of
the undercut 16 is variable.
improved means of edging plastic covered counter tops
The edging strip 11 is formed of a core material 29,
and the like.
preferably wood, to which is bonded a plastic material
It is a further object of the invention to provide a pre
13a. The plastic material 13a will usually be the same
fabricated edging strip or edge trim for such counter tops
type of material as the counter top material 13. How
and a means for attaching the edging to exposed edges,
ever, the plastic material 13a may be of a different type,
which provides ease of mounting, which is attractive, and
and it is an important advantage of the invention that the
which is securely held in place.
material 13a may be of a different color, shade and/or
it is a further object of the invention to provide an
pattern, as is explained more fully hereinafter. The ma
edging strip or the like which can be prefabricated and
terial 13a is bonded to the core 2%} by a suitable adhesive,
installed with ease at the time of installing or manufac
with the aid of heat and pressure if necessary. It will be
seen that the shape of the core 20 and hence the shape
turing a counter top, table top or the like.
3,077,012
3
4
of the surface material 13a is generally round. However,
other shapes may be employed.
and patterns because the color, shade and pattern of the
As is most clearly shown in FIGURE 1, the core 20 is
recessed slightly at 21 to form a narrow lip or overhang
22 of the surfacematerial 13a. The core is further re
cessed or channeled at 23 to form a groove. The shape
and dimensions of the groove 23 are such that it forms a
snug but not difficult ?t with the tongue 15 and such that,
when the parts It) and 11 are brought together, the lip 22
plastic on the edging need not be the same as on the
counter top.
The edging has an attractive rounded ap
pearance, whereas otheryforms of edging do not. Even
post formed edging, although it has a rounded shoulder,
has a vertical face. The entire exposed portion of the
edging strip of the present invention is rounded unless
another shape is preferred. The edging of the present
will overlap slightly the adjacent edge of the plastic layer 10
invention is also adapted to outside and inside corners.
It will, therefore, be apparent that a novel and very ad
13.
vantageous form of edging has been provided for plastic
Alsothe lip 22 will be in actual contact with or very
close to the plastic layer 13. That is to say, the edging
strip 11 is formed with certain close, precise dimensions
and with certain variable or non-critical dimensions. The
vertical dimension of the groove 23 and the vertical dis
tance from the top of the groove 23 to the lip 22 are pre
cise. The vertical distance from the bottom of the groove
23 to the bottom of the edging strip is not critical and
covered counter tops, table tops and the'like.
I claim:
1. A construction comprising a ?at, table-like member’
having a wooden‘base to which is bonded a layer of hard
plastic material, said flat member having at least one edge
formed with a projecting tongue formed from the base,
said tongue having a predetermined vertical dimension
may vary substantially.
.
and being located at a predetermined vertical distance
When the parts 10 and 11 are about to be mounted to 20 from the upper surface of said plastic material; and an
gether, a suitable adhesive is applied along the mating
edging strip for said edge, said edging strip comprising a
surfaces and any excess is wiped away.
Alternatively, ‘
Wooden core formed, with an inside face adjacent said
the edging strip 11 maybe ?xed in place by nails or
screws applied from underneath, whichhas the advantage,
edge and with a rounded outside face, and a layer of plas
tic material bonded to said rounded face; said inside face
especially where screws are applied, that the strip can be 25 being formed with a groove mating within close toler
easily removed when desired and replaced by a different
ances with said tongue; said layer of plastic on said strip
strip having'a different color and/or pattern. Or, if de- ,
having a lip overhanging said inside face slightly; the ver
sired, the ?t between the tWo parts can be made tight
tical distance between said groove and face being such
enough that no attachment means are required. Prefer
that said lip lies closely adjacent the layer of plastic on
ably the parts are glued together.
.
1 30 said ?at member; said strip projecting above said flat
Referring now to FIGURE 4, a counter top is shown at.
fad-which is plastic covered and which has three expose-d
member to’ form a raised, rounded edge therefor.
.
2. In a counter top in which a horizontally extended
edges, an outside corner at 31 and an inside corner at 32.
member is formed of a base of relatively soft material‘
Three edging strips 11a, 11b and 110 are shown, each con
with a hard plastic planar surface layer bonded thereto,
structed and mounted as shown in FIGURES 1 and 2. .35 an edging strip for covering the exposed edges of said
Merely by making appropriate 45° cuts‘at the abutting
counter top, said edging strip comprising: an elongated
ends of the edging strips 11a, 11b and lie the two corners
core of relatively soft material having a flat mounting
face for engaging said exposed edge, a short connecting
are constructed.
,
Referring now to FIGURE 5, a counter top 40 covered
face'having a terminating edge and extending at right
with plastic 41 and an edging strip 42 covered with plastic 40 angles to said mounting face for engaging the surface of
43 are shown as in FIGURES 1 and 2 but with the tongue
said plastic surface layer and a cylindrically curved outer,
and groove reversed. That is, the core 44 of counter top
face intersecting said connecting face, the intersection of
48 is formed with a groove at 45 which has a precise thick~_
said curved face with said connecting face forming said
ness and whose vertical distance from the top of , the
terminating edge, a hard plastic curved surface layer
plastic 41 is precise; and ‘the core 46 of the strip 42 is 45 bonded to said curved outerface, the edge of said curved
formed with a tongue 47 having a precise thickness to ?t
surface layer overlying said terminating edge and being’
the groove 45 snugly. Also, the vertical distance of the
tongue 47 from a projecting lip 48 of the plastic 43 is such
shaped to form an extension of said connecting face; and
a mating tongue and groove connecting member formed
on said mounting face and said exposed edge, said con
that the latter touches or is very close to the plastic ‘41.
To add strength the nails or screws may be passed diag 50 necting member being dimensioned and positioned to pro
onally from the underside of the core 46 into the core 44.
vide engagement of said connecting face across its full
The modi?cation in FIGURE 5 has many of the advan
Width with said planar surface layer.
tages of that of FIGURES 1 and 2 but the latter is pre
References Cited in the ?le of this patent
ferred because of its greater strength.
Several advantages of the present invention will be ap 55
, _
UNITED STATES PATENTS
parent, among which are the followingzrThe edging can
be prefabricated at a mill equipped with prop-er tools
Whose expense would be prohibitive for small shops.
The cuts at 14 and'16 in the counter top can be made
' 430,092
Smith ______________ __ June 10, 1890
1,396,554
2,237,840
2,674,768
Breese _____________ __'__ Nov. 8, 1921
Nelson et al. __________ _.‘ Apr. 8, 1941
Everhart ____________ __" Apr. 13, 1954
without dif?culty. The edging is easy to install. It pro 60
vides the advantage of av-rolled, raised, post formed edge
2,717,187
Without the great expense of post forming. It provides an
2,734,789
opportunity for a variety of contrasting colors, shades
2,813,766
Morgan et al. __.._- _____ __ Sept. 6, 1955
Wilson ____'____v__' ____ __ Feb. 14, 1956
Shumaker et a1. _______ __ Nov. 19, 1957
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