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Claims  |
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What is claimed is:
1. A wall or partition comprising a substructure and a surface structure,
said substructure including framing or supporting means for holding the
surface structure, and said surface structure comprising first and second
aligned substantially flat panels, adjacent at sides thereof, each of
which has concealed major back, sides, top and bottom surfaces and a
visible major front surface, which panels are substantially invisibly
secured to the substructure and thereby are secured together or spaced
apart a spacing distance by a first series of spaced apart concealed
fastener clips appended to said first panel and to the substructure, and a
second series of spaced apart concealed fastener clips appended to said
second panel, so located as to avoid contact with any of said first series
clips, and with a part of each of the panel contacting surfaces of each of
the second series of clips contacting the major back surface of the first
panel and spacing such surface from the framing or supporting means, with
each of the clips of both said series being made from sheet or strip
material and having spacing base portions, each of which is substantially
coplanar and directly continuous, extending substantially parallel to said
respective panels at concealed major back surfaces of said panels, with
said spacing base portions each having, spaced apart, a substructure
contacting surface on one side of the material thereof and a panel
contacting surface on the other side, which spacing base portions space
the major back panel surface from the framing or supporting means, which
clip surfaces are spaced apart by intermediate strengthening wall(s), a
plurality of web portions extending from each of said base portions and
between the ajdacent first and second panel sides, and pointed tabs
extending from said web portions, impaling a side of the panel to which
the clip is appended, and wherein the clip fasteners of the second series
of clips include reinforcing and lateral movement inhibiting indentations
in web portions thereof.
2. A wall or partition comprising a substructure and a surface structure,
said substructure including framing or supporting means for holding the
surface structure, and said surface structure comprising first and second
aligned substantially flat abutting panels, in contact at sides thereof,
each of which has concealed major back, sides, top and bottom surfaces and
a visible major front surface, which panels are substantially invisibly
secured to the substructure and thereby are secured together or spaced
apart a spacing distance by a first series of spaced apart concealed
fastener clips appended to said first panel and to the substructure, and a
second series of spaced apart concealed fastener clips appended to said
second panel, so located as to avoid contact with any of said first series
of clips, with a part of each of the panel contacting surfaces of each of
the second series of clips contacting the major back surface of the first
panel and spacing such surface from the framing or supporting means, and
with panel contacting surfaces of the clips of the first series contacting
the major back surface of the second panel, said clips of both series
being concealed by the contacting sides of the adjacent panels, with each
of the clips of both said series being made from sheet hard steel and
having spacing base portions, each of which is substantially parallel to
said respective panels at concealed major back surfaces of said panels,
with the ratio of surface area proportions of the clip substructure
contacting surface and panel contacting surface being from 1:7 to 7:1,
with said spacing base portions each having, spaced apart, a substructure
contacting surface on one side of the material thereof and a panel
contacting surface on the other side, which spacing base portions comprise
substantially coplanar directly connected plate and tongue parts and space
the major back panel surface from the framing or supporting means, and
which clip surfaces are spaced apart by intermediate strengthening wall(s)
about 1 to 3 times the thickness of the hard steel sheet material of which
the clips are made, at least as long as 25% of the periphery of the base
portion, and at about a right angle to the substructure contacting and
panel contacting surfaces of the clips, which surfaces are substantially
parallel to each other, a plurality of web portions extending from each of
said base portions only from the plate part thereof and between the
adjacent first and second panel sides, and pointed tabs extending from
said web portions in the direction of the plate part, impaling a side of
the panel to which the clip is appended.
3. A wall or partition according to claim 2 wherein the clips of the second
series comprise peripherally located panel contacting surfaces and
interiorly located framing contacting surfaces, the webs of the clips, of
which there are two for each clip, are spaced apart from the tongue
thereof, which is centrally located, and the tongue includes a
longitudinal slot for adjustable fastening of the clips to a framing
member.
4. A wall or partition according to claim 2 wherein the clips of the second
series include a depressed interior part of the tongue part, which
depressed part includes a plurality of indentations on a surface thereof
facing a panel back surface so as to provide a plurality of possible
starting locations for penetrating said part of the tongue for passage
therethrough of a fastener for fastening the clip to a framing member when
such fastening is desired.
5. A wall or partition according to claim 2 wherein the second series clips
comprise an interiorly located panel contacting surface and an exteriorly
located, with respect to such interior panel contacting surface, framing
contacting surface, with the panel contacting surface having a substantial
proportion thereof in the plate part of the base portion of the clip, and
being surrounded by a substantially panel contacting surface of the base
portion, whereby improved stability is obtained in the holding of the
clips to the wallboard and in the holding of the wallboard to the framing
member.
6. A wall or partition according to claim 2 wherein the second series clip
fasteners comprise reinforcing and lateral movement inhibiting
indentations in the web portions where they are joined to the plate and
pointed tab portions, respectively, which indentations extend to such
plate and tab portions.
7. A wall or partition according to claim 2 wherein all of the first series
clip fasteners include a slot opening in the tongue portion thereof,
transverse to the direction in which said tongue extends and passing from
a side of said tongue to an interior part thereof, so as to provide a path
for movement of the wall or partition in a direction at right angles to
that in which it is assembled, with respect to means for holding it to the
framing member, to facilitate disassembly of the wall or partition when
such may be desired.
8. A wall or partition according to claim 7 wherein a panel or substructure
contacting surface of the clip fastener is in the form of a strip
substantially paralleling the periphery of the clip, interrupted near the
slot opening in the tongue portion thereof, interiorly located with
respect to said periphery and supported by a rigidifying and spacing wall.
9. A wall or partition according to claim 2 wherein the clips include third
webs, located between the other two webs and extending in the same
direction but with the plane thereof at a spacing distance from the plane
of the other webs so as to space the installed wallboards apart
approximately such spacing distance.
10. A wall or partition according to claim 9 wherein the panels include
undercut type openings at the front side edges, with those of adjacent
panel edges forming undercut type grooves, with the distance across said
grooves at the front thereof being less than the distance across them at
the back, and wherein said grooves are filled with a complementarily
shaped resilient strip material, which conceals the panel to panel joint
and any clip and fastener parts which might otherwise be visible.
11. A wall or partition comprising a substructure and a surface structure,
said substructure including framing or supporting means for holding the
surface structure, and said surface structure comprising first and second
aligned substantially flat panels, adjacent at sides thereof, each of
which has concealed major back, sides, top and bottom surfaces and a
visible major front surface, which panels are substantially invisibly
secured to the substructure and thereby are secured together or spaced
apart a spacing distance by a first series of spaced apart concealed
fastener clips appended to said first panel and to be substructure, and a
second series of spaced apart concealed fastener clips appended to said
second panel, so located as to avoid contact with any of said first series
of clips and with a part of each of the panel contacting surfaces of each
of the second series of clips contacting the major back surface of the
first panel and spacing such surface from the framing or supporting means,
with each of the clips of both said series being made from sheet or strip
material and having spacing base portions, each of which is substantially
coplanar and directly continuous, extending substantially parallel to said
respective panels at concealed major back surfaces of said panels, with
said spacing base portions each having, spaced apart, a substructure
contacting surface on one side of the material thereof and a panel
contacting surface on the other side, which spacing base portions space
the major back panel surface from the framing or supporting means, and
which clip surfaces are spaced apart by intermediate strengthening
wall(s), a plurality of web portions extending from each of said base
portions and between the adjacent first and second panel sides, and
pointed tabs extending from said web portions, impaling a side of the
panel to which the clip is appended, and wherein a slot or equivalent
opening is present in the first series clips, extending from a side of the
base portion thereof to an interior location of said base portion, through
the panel contacting surface thereof and in a direction substantially
parallel to that of the clip webs, so as to provide a path for movement of
the wall or partition in a direction at right angles to that in which it
is assembled, with respect to means for holding it to the substructure, to
facilitate disassembly of the wall or partition, when such may be desired.
12. A fastener clip, useful for installing wallboard or similar panels onto
a substructure to form a wall or partition, wherein means for holding such
panels to the substructure are substantially concealed, which is made from
sheet or strip material and comprises a substantially coplanar and
directly continuous spacing base portion which includes, spaced apart, a
substructure contacting surface on one side of the material thereof and a
panel contacting surface on the other side, spaced apart by intermediate
strengthening wall(s), which spacing base portion spaces a major back
panel surface from said substructure when such clip is installed, a
plurality of web portions extending at about a right angle from said base
portion, with reinforcing and lateral movement inhibiting indentations
therein, and pointed tabs, extending from said web portions and suitable
for impaling a side of a panel to which the clip is appended, with the
panel contacting surface of the base contacting a major back surface of
the panel and with the web contacting a side thereof.
13. A clip according to claim 12 wherein the reinforcing and lateral
movement inhibiting indentations in the web portions thereof are located
where such web portions are joined to the plate and to the pointed tab
portions and extend from the webs to such plate and tab portions.
14. A fastener clip, useful for installing wallboard of similar panels onto
a substructure to form a wall or partition, wherein means for holding such
panels to the substructure are substantially concealed, which is made from
sheet or strip material and comprises a substantially coplanar and
directly continuous spacing base portion which includes, spaced apart, a
substructure contacting surface on one side of the material thereof and a
panel contacting surface of the other side, spaced apart by intermediate
strengthening wall(s), which spacing base portion spaces a major back
panel surface from said substructure when such clip is installed, a
plurality of web portions extending at about a right angle from said base
portion, pointed tabs, extending from said web portions and suitable for
impaling a side of a panel to which the clip is appended, with the panel
contacting surface of the base contacting a major back surface of the
panel and with the webs contacting a side thereof, and a slot or
equivalent opening extending from a side of the base portion to an
interior location of said base portion, through the panel contacting
surface thereof and in a direction substantially parallel to that of the
webs, so as to provide a path for movement of a wall or partition in a
direction at right angles to that in which it is assemblable, with respect
to means for holding such wall to the substructure, to facilitate
disassembly of the wall or partition, when such may be desired.
15. A wall or partition comprising a substructure and a surface structure,
said substructure including framing or supporting means for holding the
surface structure, and said surface structure comprising first and second
aligned substantially flat panels, adjacent at sides thereof, each of
which has concealed major back, sides, top and bottom surfaces and a
visible major front surface, which panels are substantially invisibly
secured to the substructure and thereby are secured together or spaced
apart a spacing distance by a first series of spaced apart concealed
fastener clips appended to said first panel and to the substructure, and a
second series of spaced apart concealed fastener clips appended to said
second panel, so located as to avoid contact with any of said first series
of clips and with a part of each of the panel contacting surfaces of each
of the second series of clips contacting the major back surface of the
first panel and spacing such surface from the framing or supporting means,
with each of the clips of both said series being made from sheet or strip
material and having spacing base portions, each of which is substantially
coplanar and directly continuous, extending substantially parallel to said
respective panels at concealed major back surfaces of said panels, with
said spacing base portions each having, spaced apart, a substructure
contacting surface on one side of the material thereof and a panel
contacting surface on the other side, which spacing base portions space
the major back panel surface from the framing or supporting means, and
which clip surfaces are spaced apart by intermediate strengthening
wall(s), a plurality of web portions extending from each of said base
portions and between the adjacent first and second panel sides, and
pointed tabs extending from said web portions, impaling a side of the
panel to which the clip is appended, and wherein clip fasteners of at
least one of the series of clips include a spacing member for spacing
apart the adjacent wallboard panel sides during and after installation
thereof so that they are spaced apart a distance greater than the web
thickness of the fasteners.
16. A fastener clip, useful for installing wallboard or similar panels onto
a substructure to form a wall or partition, wherein means for holding such
panels to the substructure are substantially concealed, which is made from
sheet or strip hard steel and which comprises a substantially coplanar and
directly continuous spacing base portion of directly connected plate and
tongue parts which includes, spaced apart, a substructure contacting
surface on one side of the material thereof and a panel contacting surface
on the other side, with the area ratio of substructure contacting surface
to panel contacting surface being in the range of 1:7 to 7:1, spaced apart
by intermediate strengthening wall(s) which is/are in total, at least as
long as 25% of the periphery of the base portion, which wall(s) is/are at
about a right angle to the substructure contacting and panel contacting
surfaces of the base portion of the clip, which surfaces are substantially
parallel to each other, with the depth of the intermediate strengthening
wall(s) being about 1 to 3 times the thickness of the clip material, which
spacing base portion spaces a major back panel surface from said
substructure when such clip is installed, a plurality of web portions
extending only from the plate part at about a right angle from said base
portion, and pointed tabs, extending from said web portions in the
direction of the plate part and suitable for impaling a side of a panel to
which the clip is appended, with the panel contacting surface of the base
contacting a major back surface of the panel and with the webs contacting
a side thereof.
17. A fastener clip, useful for installing wallboard or similar panels onto
a substructure to form a wall or partition, wherein means for holding such
panels to the substructure are substantially concealed, which is made from
sheet or strip material and which comprises a substantially coplanar and
directly continuous spacing base portion which includes, spaced apart, a
substructure contacting surface on one side of the material thereof and a
panel contacting surface on the other side, spaced apart by intermediate
strengthening wall(s), which spacing base portion spaces a major back
panel surface from said substructure when such clip is installed, a
plurality of web portions extending at about a right angle from said base
portion, pointed tabs, extending from said web portions and suitable for
impaling a side of a panel to which the clip is appended, with the panel
contacting surface of the base contacting a major back surface of the
panel and with the webs contacting a side thereof, and a spacing member
for spacing apart wallboard panels during and after installation thereof
with the aid of said clip so that they are spaced apart a distance greater
than the web thickness.
18. A fastener clip, useful for installing wallboard or similar panels onto
a substructure to form a wall or partition, wherein means for holding such
panels to the substructure are substantially concealed, which is made from
sheet or strip material and which comprises a substantially coplanar and
directly continuous spacing base portion of substantially coplanar and
directly connected plate and tongue parts, which includes, spaced apart, a
substructure contacting surface on one side of the material thereof and a
panel contacting surface on the other side, spaced apart by intermediate
strengthening wall(s), which spacing base portion spaces a major back
panel surface from said substructure when such clip is installed, a
plurality of web portions, farther apart than the width of the tongue,
which is centered between them, so that clearances are provided between
the webs and the tongue, which facilitate manufacture of the clip and
installation thereof, which web portions extend only from the plate part,
at about a right angle from said base portion, and pointed tabs, extending
from said web portions in the direction of the plate part and suitable for
impaling a side of a panel to which the clip is appended, with the panel
contacting surface of the base contacting a major back surface of the
panel and with the web contacting a side thereof.
19. A fastener clip, useful for installing wallboard or similar panels onto
a substructure to form a wall or partition, wherein means for holding such
panels to the substructure are substantially concealed, which is made from
sheet or strip material and which comprises a substantially coplanar and
directly continuous spacing base portion which includes, spaced apart, a
substructure contacting surface on one side of the material thereof and a
panel contacting surface on the other side, spaced apart by intermediate
strengthening wall(s), which spacing base portion comprises substantially
coplanar and directly connected plate and tongue parts and spaces a major
back panel surface from said substructure when such clip is installed, a
plurality of web portions extending only from the plate part and at about
a right angle from said base portion, and pointed tabs, extending from
said web portions and suitable for impaling a side of a panel to which the
clip is appended, with the panel contacting surface of the base contacting
a major back surface of the panel and with the webs contacting a side
thereof.
20. A clip according to claim 19 in which there are two webs only and the
pointed tabs extend in the direction of the plate part.
21. A clip according to claim 20 in which the tongue is centrally located
with respect to the base and the tongue includes a longitudinal slot for
adjustable fastening of the clip to a framing member.
22. A wall or partition comprising a substructure and a surface structure,
said substructure including framing or supporting means for holding the
surface structure to and spaced away from the substructure, and said
surface structure comprising first and second aligned substantially flat
panels, adjacent at sides thereof, each of which has concealed major back,
sides, top and bottom surfaces and a visible major front surface, the
sides of which panels are substantially straight and flat, which panels
are substantially invisibly secured to the substructure and spaced away
from it, and thereby are secured together or spaced apart a spacing
distance, by a first series of spaced apart concealed fastener clips
appended to said first panel and to the substructure, and a second series
of spaced apart concealed fastener clips appended to said second panel, so
located as to avoid contact with any of said first series of clips and
with a part of each of the panel contacting surfaces of each of the second
series of clips contacting the major back surface of the first panel and
spacing such surface from the framing or supporting means, with each of
the clips of both said series being made from sheet or strip material and
having spacing base portions, each of which is substantially coplanar and
directly continuous, extending substantially parallel to said respective
panels at concealed major back surfaces of said panels, with said spacing
base portions each having, spaced apart, a substructure contacting surface
on one side of the material thereof and a panel contacting surface on the
other side, which spacing base portions space the major back panel surface
from the framing or supporting means a distance greater than the thickness
of the material of the clips, and which clip surfaces are spaced apart by
intermediate strengthening wall(s), a plurality of web portions extending
from each of said base portions and between the adjacent first and second
panels sides, and pointed tabs extending from said web portions, impaling
a side of the panel to which the clip is appended.
23. A wall or partition according to claim 22 wherein a panel or
substructure contacting surface of a clip fastener of the second series of
clips is peripherally or substantially peripherally located on the clip
base and the other such contacting surface of such clip is interiorly
located on such base.
24. A wall or partition according to claim 22 wherein a surface of the base
portion of a clip fastener of the second series of clips is roughened,
knurled, indented, grooved or equivalently structured so as to provide a
plurality of possible starting locations for penetrating said part of the
base for passage therethrough of a fastener.
25. A wall or partition according to claim 22 wherein a clip fastener of
the second series of clips includes a base portion having an interiorly
located panel contacting surface and an exteriorly located, with respect
to such panel contacting surface, framing contacting surface.
26. A wall or partition according to claim 22 wherein a panel or
substructure contacting surface of the clip fastener of the second series
of clips is in the form of a strip paralleling or substantially
paralleling the periphery of the clip, interiorly located with respect to
said periphery and supported by rigidifying and spacing wall(s).
27. A wall or partition according to claim 22 wherein the panels include
complementary longitudinal openings at the front side edges thereof and
such openings of the assembled wall are filled with a strip material.
28. A wall or partition according to claim 22 wherein the panel contacting
surfaces of the clips of the first series contact the major back surface
of the second panel.
29. A wall or partition according to claim 28 wherein the structure
contacting surface and panel contacting surface of the clip fasteners are
of area proportions in the range of 1:14 to 14:1 and are spaced apart by
intermediate strengthening wall(s) at least as long, in total, as 10% of
the periphery of the base portion and at least 3/4 as deep as the
thickness of the sheet or strip material of which the fastener clip is
made.
30. A wall or partition according to claim 29 wherein the ratio of surface
area proportions of the clip substructure contacting surface and panel
contacting surface is from 1:7 to 7:1, the intermediate strengthening
wall(s), in total, is/are at least as long as 25% of the periphery of the
base portion and the depth of such wall(s) is 3/4 to 5 times the thickness
of the sheet material of which the fastener clip is made.
31. A fastener clip, useful for installing wallboard or similar panels onto
a substructure to form a wall or partition, wherein means for holding such
panels to the substructure are substantially concealed, which is made from
sheet or strip material and which comprises a substantially coplanar and
directly continuously spacing base portion which includes, spaced apart, a
substructure contacting surface on one side of the material thereof and a
panel contacting surface on the other side, spaced apart by intermediate
strengthening wall(s), which spacing base portion spaces a major back
panel surface of the panel from said substructure a distance greater than
the thickness of the sheet or strip material of the clip, when such clip
is installed, a plurality of web portions extending at about a right angle
from said base portion, and pointed tabs, extending from said web portions
and suitable for impaling a substantially flat side of a panel to which
the clip is appended, with the panel contacting surface of the base
contacting a major back surface of the panel and with the webs contacting
a substantially flat side thereof.
32. A clip according to claim 31 wherein the substructure contacting
surface and panel contacting surface of the base portion are of an area
ratio in the range of 1:14 to 14:1 and are spaced apart by intermediate
strengthening wall(s) at least as long, in total, as 10% of the periphery
of the base portion and at least 3/4 as deep as the thickness of the sheet
or strip material of the clip.
33. A clip according to claim 32 wherein the ratio of the surface areas of
the substructure contacting and panel contacting surfaces is in the range
of 1:7 to 7:1, the intermediate strengthening wall(s), in total, is/are at
least as long as 25% of the periphery of the base portion and the depth of
such wall(s) is 3/4 to 5 times the thickness of the sheet material of the
clip.
34. A clip according to claim 31 wherein a panel or substructure contacting
surface thereof is peripherally or substantially peripherally located on
the base portion and the other such contacting surface is interiorly
located on such base portion.
35. A clip according to claim 31 wherein a surface of the base portion is
roughened, knurled, indented, grooved or equivalently structured so as to
provide a plurality of possible starting locations for penetrating such
parts of the base portion for passage therethrough of a fastener.
36. A clip according to claim 31 wherein the base portion includes an
interiorly located panel contacting surface and an exteriorly located,
with respect to such panel contacting surface, framing contacting surface.
37. A clip according to claim 31 wherein a panel or substructure contacting
surface is in the form of a strip paralleling or substantially paralleling
the periphery of the clip, interiorly located with respect to said
periphery and supported by rigidifying and spacing wall(s).
38. A clip according to claim 31 which is made of heat treated and thereby
hardened steel, which is heat treated after shaping to form from strip or
steel which is heat hardenable.
39. A clip according to claim 38 which is of spring steel. |
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Claims  |
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Description  |
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The present invention relates to wall and partition construction and more
particularly to the use of easily installed clip fasteners to mount
panels, such as paper wrapped gypsum wallboards, on common wall framing
members such as wood or metal studs and furring runners. The wallboards
employed may be produced by various methods and may be of any suitable
compositions but they are usually comparatively thin rectangular panels
with gypsum cores and a paper covering. These commonly named "drywall"
panels are available with a decorative, factory appled surface cover, such
as textured vinyl, which eliminates the need to paint and otherwise treat
the wall after erection. Permanent walls, or those not expected to be
moved or relocated are often constructed of unfinished wallboards which
are tapered at ends thereof to a thickness less than the main portion of
the wallboard, to allow for application of a plaster compound used in a
joint treatment. Such treatment normally includes three separate
applications of a wet cement-like joint compound, with the material
applied first having a paper or fiber tape imbedded therein. The joint
compound must be allowed to dry thoroughly (shrink) after each application
and it is not uncommon to have to wait a full day or longer between such
applications. A similar application of joint compound is used to fill
depressions made by the exposed fasteners on each wallboard panel between
the joints. The use of pre-finished wallboard panels, of course,
eliminates the need for this wet joint treatment, but they cannot be
fastened to the framing members by ordinary techniques because the
fasteners would be exposed and impair the desired appearance of the
finished surface. Accordingly, concealed fasteners or clips are highly
desirable for the erection of walls from pre-finished wallboards. Such
clips can also have applications in constructing walls from unfinished
wallboard panels, which often may also have appropriate joint changes to
improve assembly.
Various concealed clip devices for holding prefinished wallboards to
framing members and other substructures have been described, and several
of these have been marketed. Among the more successful of such fasteners
are those described in my U.S. Pat. No. 4,117,644, which are now widely
used in the construction industry. However, while such fasteners are
economical, labor reducing and satisfactorily hold the assembled wallboard
panels in position, assembly and disassembly of the wallboard panels has
to be effected sequentially. In one form of the present invention the
modified clips shown may be disengaged from the fasteners to permit any
pair of wallboard panels to be dismounted from the framing structure when
the desired panel is slightly shifted vertically on the framing members.
In another form of the clip, particularly useful in the construction of
permanent wall structures, a panel separating spacer is provided on each
clip to permit a unique system of joint treatment. The invented clips may
be used for the assembly of walls when new methods of joint treatment are
employed, all of which require concealed clips and standard or modified
wallboards and methods.
The closest prior art known to me is my patent described above. In addition
thereto, it is considered that the following references may also be
considered to be relevant: U.S. Pat. Nos. 1,052,670; 2,281,519; 2,325,766;
3,047,985; 3,117,353; 3,187,389; 3,308,590; 4,010,589; 4,052,831;
4,127,975; 4,128,979; 4,221,095; and French Pat. No. 1,362,162.
Additionally, my Pat. No. 4,281,494, issued Aug. 4, 1981, may also be
relevant. However, none of the applicable art describes the broad
invention of this application nor the various more specific embodiments
thereof described herein.
In accordance with a broader aspect of the present construction a wall or
partition comprises a substructure and a surface structure, said
substructure including framing or supporting means for holding the surface
structure, and surface structure comprising first and second side abutting
or approaching substantially flat panels, each of which has concealed
major back, side, top and bottom surfaces and a visible major front
surface, which panels are substantially invisibly secured to the
substructure and together by a first series of spaced apart concealed
fastener clips appended to said first panel and to the substructure and a
second series of spaced apart fastener clips appended to said second panel
and so located as to avoid contact with any of said first series of clips,
with each of the clips of both said series being made from sheet or strip
material and having base portions extending substantially parallel to said
respective panels at concealed major back surfaces thereof, with said base
portions each having a spaced apart substructure contacting surface on one
side of the material thereof and a panel contacting surface on the other
side, contacting the major back surface of the panel to which the clip is
appended, which clip surfaces are spaced apart by intermediate
strengthening wall(s), and with a part of each of the panel contacting
surfaces of the second series of clips contacting the major back surface
of the first panel, a plurality of web portions extending from said base
portions and between the first and second panel sides, and pointed tabs
extending from said web portions, impaling a side of the respective panel
to which the clip is appended. Also within the in | | |