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Патент USA US3095962

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July 2, 1963
R. E. FORD
3,095,952
DOOR
Filed Nov. 20. 1959
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BY
United States Patent O " clCe
2
1
3,095,952
DÜOR
Ralph E. Ford, Harper Woods, Mich., assigner to
William A. Temes
Filed Nov. 20, 1959, Ser. No. 854,338
10 Claims. (Cl. 189-46)
My invention relates to door constructions and is par
Patented July 2, 1963
folded as a unitoutwardly to open up the full width of
the doorway. The -longitudinal side edges of the panels
are turned back under in channel-like formation as seen
at 4.
The Idoor panels shown in FIG. 1 have louvers 5
formed in the upper halves, `the lower halves being im
perforate. The louvers 5 are desirably of the shape and
configuration revealed in FIGS. 2-4.
As can -be seen
ticularly concerned with door panels formed of sheet
there, the bottom edge 7 of each louver is 4slit and then
metal.
10 pressed rearwardly away from the front or outer face
9 0f -the panel, a pleasing curved appearance being given
Door panels formed of sheet metal, such as sheet steel,
are often objectionably noisy unless provided with a
sound deadening means. One method of sound deaden
ing has been to place a piece of cardboard or similar
absorbent material on the back of the door panel. This
expedient however cannot be used when the door panel
is louvered since, in such a case, the cardboard could
be seen through the louvers.
With the foregoing in mind, it is an object of my
invention to provide a novel means for sound deaden 20
to the body of the louver as seen at 11. The opposite
ends of the louvers are `curved as seen at 13 inwardly
as they go from the ‘bottom edge of the louver to the
top portion thereof as delined by the line 15 of bend
ing. It will be noted that this formation of the louvers
leaves a narrow strip of material 17 between the edge
19 of the opening left by the adjacent louver and the
line of bending 15. At the ends or edges of the louver
ythe narrow strip 17 expands, or is widened, as the ends
ing metal door panels, particularly louvered door panels.
13 »curve away from the line 15 toward the lower edge
It is also an object of my invention to provide a means
7 of the louver, thus leaving more or less triangularly
shaped areas 20.
for improving the appearance of a door panel.
It is a further object of my invention to provide a
The vertical molding strips 21 are shown in FIGS.
means which performs the several functions of sound 25 2-5 and the horizontal strips 22 are of the same con
struction. The molding strips that are used on the
deadening the door panel, improving its appearance, and
stiffening the panel.
louvered upper portion and »the unlouvered lower por
tion of the door are identical. The strips are symmetri
cal `about their mid-plane so that the half-section of FIG.
30 5 is vsu-liicient to reveal the details of their construction.
taching it to ythe door panel.
I achieve these and other objects of the invention
As will `be seen, the molding has a central ñat portion
A further object of my invention is to provide a novel
type of molding for a door and a unique way of at
23 which is adapted to be pressed flat against the face
by means of a trim >strip of novel cross-sectional shape
which is attached to the front of the door panel. This
or surface of the `door panel and be spot welded to it,
as shown at the places marked with an X and some
trim strip or lmolding is shaped in such a way that it
‘contains but hides a strip `of non-metallic absorbent 35 of which are identified by the numeral 25. Outwardly
and on either side of the central portion 23 the molding
material, such as plastic, rubber, or paper. The mold
is flanged upwardly in a short section 27 and then ex
ing holds this sound absorbent material tightly corn
tends upwardly on an incline in a section 2.9, the outer
pressed against the surface of the door panel and this
most leg portion 31 of the molding is ibent `downwardly
is effective in minimizing `or eliminating objectionable
sounds and noises as well as in providing a pleasing ex 40 at `corner 312 on an angle to the section 29, this angle
ternal appearance to the rface of the door panel.
The invention is illustrated in the accompanying draw
preferably being >somewhat less `than `90" with the plane
of the central section 23, as can be seen in FIG. 5. An
important feature is the fact that the end of the :outer
FIGURE -1 is a perspective view showing a set of 45 leg section 31 extends a distance 33 below the bottom
face of the center section 23 as is clear-ly evident in FIG.
folding doors embodying the invention;
5, which figure shows the preferred dimensional propor
FIG. 2 is an enlarged view of the louvered section of
portions for the cross section. It will Ibe seen that when
one of the four door panels of FIG. 1;
the flat central section 23 is spot Welded at 25 to the
FIG. 3 is an enlarged cross-section taken along the
line 3_3 of FIG. l;
50 sections 20 of the door panel it will lbe necessary to
force it through the distance 33. This will be aecom
FIG. 4 is an enlarged cross-section taken along the
modated by some bending of the legs 31 and 29, proba
line `4_4 of FIG. 2; and
bly to change the angle 32 between them and to reduce
FIG. 5 is an enlarged cross-section of `one-half of a
the volume of space 34 below the two legs 31 and 29.
molding or trim strip, shown in the unstressed condition
In accordance with my invention, I provide a sound
prior to welding of the trim strip Ato the door panel.
55
absorbent non-metallic material 3S in the space 34 and
The door lconstruction shown in FIG. 1 comprises
ings, in which:
two pairs of folding door sets, each set comprising door
panels 1 and 3. Except for the hardware, these panels
preferably extending for the full length of the molding
element 21.. While certain advantages of the invention
may be obtained by the use of materials such as paper,
are identical. Their speciiic construction is shown in
more detail in my Patent No. 2,898,987, issued August 60 sponge rubber, a hollow rubber tube, etc., I prefer to
lil, 1959, and in my copending application Serial No.
676,075, iiled August 5, 1957, now Patent No. 2,943,675,
issued July 5, 1960 which application also shows in
use a plastic material.
I have found that a thermo
plastic resin, such as polybutene, poly-iso-butene, butyl
rubber, `or asphalt, `along with inert fill-ers or pigments
is very desirable. In particular I have been satisfied
FIGS. lOl-12 a louvered door construction which is the
same in principle as that to be disclosed herein. Ref 65 with a material known on the open market as No. 50‘21
“Mortite” which is a synthetic resin plastic sealer ex
erence may be made to my patent and application for
truded to a speciiic size. I prefer to use a round rod
specific door construction and mounting features. The
ílike ext-rustion and I prefer it to be of the same diame
panels 1 and 3 are hinged together on their adjacent
ter as the overall height of the molding 21, that is the
edges so that they can be »folded together with one panel
overlying the other, as partially appears in the right of 70 total height of the leg 31, since with this arrangement
'the material 35 projects lbelow the bottom of the leg
FIG. l. The outermost of the panels is pivoted in the
for a substantial distance as shown in FIG. 5. “Mortite”
doorway so that each pair of panels can be pivoted and
3,095,952
4
and similar materials are 'permanently pliable and retain
portion, the ends of said wing portions being reversely
their plasticity and adhesive properties indefinitely; they
bent and extending outwardly beyond the plane of said
central web portion opposite Vsaid grooves whereby when
said central web portion is secured to said panel member
has the solvents driven off prior to application hence
said wing portions will be resiliently outwardly flexed to
there -is nothing to îbe driven out to make it become
obtain a tight sound deadening engagement between said
brittle upon heating. This is important since I intend
wing portions and said panel member, said central web
to apply the molding prior to painting of `the door.
portion `being fastened to said panel member between said
As can be seen by comparison of FIGS. 4 and 5, after
louvers along the side edges thereof, one of said wing
the trim strip 21 has been spot welded at points 25 to 10 portions being located to engage said louvers adjacent
the sections 19 of the door panel the space 34 will be
said panel member, and the lother of said Wing portions
reduced in volume. The protruding section of the plastic
being located to engage said panel member adjacent said
35 which extends below the bottom face of the section
louvers.
23 of the molding in FIG. 5 will be compressed and
2. The steel door construction as defined in claim 1
remain pliable at temperatures near zero and retain their
adhesion even at elevated temperatures. This material
forced to flow at other points within the space 34 to pro
>and wherein non-metallic sound deadening means are
vide the arrangement shown in FIG. 4.
provided in said grooves and compacted into engagement
I apply the trim strip ‘21 to the particular location on
with said panel member and said louvers by said wing
the door panel face 9 shown best in FIG. 2, that is so
portions.
that the central section 23 overlies the sections 20 of the
3. In a metal door panel for use in a folding door ar
door panel. In this location the sound deadening strips 20 rangement or the like, a door panel body having a front
35, on the inside leg, are in engagement with the thin
surface normally viewable in use and a rear surface, a
transverse strip sections 17 of the door panel and act
metallic moulding means mounted on said front surface
effectively to deaden these sections and prevent them
of said panel body and forming a combination decorative
from vibrating or causing noise. Also, the sections 17
trim strip and sound deadening barrier, an outer decora
will tend to embed themselves in the bottom portion of 25 tive surface and an inner surface provided on said mould
the absorbent material 35 when the molding and absorb
ing means, sound deadening door panel engaging means
ent material is applied to the face of the panel. Thus,
formed along the inner surface of said moulding means,
the material 35 will act in this manner, along with its
fastening means to rigidly secure said moulding means
natural adhesive properties to hold the molding in po-si
to said door body and to rigidly engage said sound dead
tion during the spot welding operation. As indicated 30 ening means with said door body, and «sound absorbent
above, the moldingr with the plastic material 35 inside is
means mounted between said metallic moulding means
spot welded to the door panel prior to painting. After it
and said door panel body and being completely enclosed
has been attached the door may be painted and baked in
‘by portions of the inner surface of said metallic moulding
a paint drying oven. It will be appreciated that it is a
means and the adjacent surface of said door panel body
considerable advantage to be able to apply the molding
prior to painting, rather than after the painting operation
has been completed.
and being forceably compacted by said fastening means
between said metallic moulding means and said door
panel body.
It will now be apparent that by means of the trim
4. In a folding metal door or the like, a metallic door
strips 21 I have provided the door panels 1 and 3 with a
body panel having 4a front surface normally viewable in
pleasing, attractive appearance. In addition, by using
use and a rear surface, moulding strip means having a
them to support a sound deadening material 35 I have
decorative outer side surface and an inner side surface,
groove means forming a packing cavity in said moulding
strip means along the inner side surface thereof, deform
able packing means mounted in said packing cavity, and
fastening means to fixedly secure said moulding strip
means to said front surface of said door body ina decora
tive pattern and to deform said packing means in said
packing cavity and to bring the inner side surface of said
moulding strip means adjacent said packing groove into
50 surface engagement with the adjacent surface of said door
provided a means extending `over a substantial part of the
door panel for absorbing noise and elimina-ting vibrations.
This means is effective on both louvered and unlouvered
door areas. The unusual construction arrangement of
the molding itself and its location on the door panel pro
vides an improved means of attachment of the molding
to the door panel. From the manufacturing standpoint,
the arrangement is such that the parts can be applied to
the unfinished door and then the entire assembly painted
and baked.
This is in contrast with the use of a wood
molding strip which must be cemented on to the finished
or painted door and in the course of drying could be
damaged, or damage the appearance of the door.
body to completely enclose said packing means relative
»to said front surface.
5. A metallic door construction having front and rear
surfaces, moulding strip means secured to at least one of
55 said surfaces to form a decorative «pattern and sound
I have illustrated the preferred embodiments and dis
closed preferred materials, but it will be apparent that
modifications are possible without departing from the
spirit and scope of my invention. `For example, if only
sound deadening is desired it would be possible -to appl-y
the trim strips with material 35 to the back of the door 60
panel. Further, the trim strips can be used with louvers
of different configuration (square ends, for example) and
with fully louvered or even unlouvered door panels.
I claim:
'
deiadening barrier, said moulding str-ip means comprising a
base portion and resilient cantilever means integrally con
neoted thereto and extending outwardly therefrom, a
packing cavity formed by said resilient cantilever means,
deformable packing means receivable in said packing
cavity, a substantially continuous door engaging surface
provided on said resilient cantilever means outwardly be
yond said packing cavity away from said base portion,
and fastening means »to secure said base pon-tion to said
1. A decorative steel door construction comprising a
front panel member, a louvered section formed in said
door, said substantially continuous door engaging surface
panel member, a plurality of louvers integrally formed in
said louvered section of said panel member, moulding
being offset relative to said base portion toward said one
of said surfaces before said base portion is secured to
strip means secured to said panel member around said
said door by said fastening means and being resiliently
louvered section, said moulding strip means comprising 70 engaged with said door and displaced toward said base
a pair of spaced wing portions, a central web portion
portion substantially into 1the plane of said base portion
connecting said wing portions, said wing portions defining
longitudinally extending grooves on each side of said
central web portion, said moulding strip means being
during securement lthereof to said door, said continuous
door engaging surface forming a complete enclosure for
said packing means when said base portion is secured to
connected to said panel member through said central web 75 said door and the resilient engagement of said continuous
3,095,952
5
6
door engaging surface with said door causing deforma
pletely enclose said packing cavity by surface engagement
tion of said packing means within said packing cavity.
between said one of said panels and the panel engaging
6. A deconative metal door construction comprising a
surfaces, deformable sound absorbent packing means
mounted in said packing cavity, and resilient cantilever
front panel member, a louver section formed on said front
panel member, said louver section being formed by a Ch means provided on said moulding means and being en
series of decorative louvers integrally formed in said
louvered section of said panel member, metal moulding
means secured to said panel member [and forming a deco
rative trim strip and sound deadening barrier around the
periphery of said louver section, fastening means securing
said moulding means Ito said front panel member, sound
gageable with said packing means when said metal mould
ing means is secured Ito said one of said panels to deform
and compact said packing means in said packing cavity.
9. A metal door construction comprising a panel mem
ber, moulding means forming a decorative trim strip and
by resilient cantilever means resiliently engaged with said
sound deadening barrier secured centnally of said panel
member, said moulding means comprising a pair of
spaced wing portions, a central web portion connecting
front panel portion, and non-metallic sound absorbent
said wing portions, said wing portions defining longitudi
d-ampening means formed on said metal moulding means
means provided between said resilient cantilever means 15 nally extending -grooves on each side of said central web
and said front panel member, said sound dampening
portion, 'said moulding strip being connected to said panel
means being mounted on said front panel member to com
member through said central web portion, and the ends
pact said sound absorbent means between said resilient
cantilever means and said front panel member.
7. A metal door construction having front and rear
panels, metal moulding means forming a decorative trim
strip and sound deadening barrier on at least one of said
panels, means secuning said metal moulding means to said
one of said panels, a packing cavity formed in the rear
surface of said metal moulding means facing said one
of said panels, panel engaging surfaces provided at the
sides of said packing cavity to completely enclose said
packing cavity by surface engagement between said one
of said panels and the panel engaging surfaces, deform
able sound absorbent packing means mounted in said 30
of said wing portions being bent and extending outwardly
beyond the plane of said central web portion opposite said
grooves toward said panel member whereby as said cen
«tral web portion ris secured to said panel member said wing
portions will be resiliently ñexed outwardly to obtain a
tight sound deadening engagement with said panel mem
ber.
10. The metal door construction as defined in claim 9
and wherein non-metallic sound deadening means are
provided in said grooves and compacted into engagement
with said panel member by said wing portions.
References Cited in the ñle of this patent
packing cavity, and packing engaging and deforming
UNITED STATES PATENTS
means provided on said metal moulding means and be
ing operative when said metal moulding means is secured
to and said panel engaging surfaces are engaged with said
one of said panels to deform and compact said packing 35
means in said packing cavity, said packing means being
confined within said packing cavity between said one of
said panels and said panel engaging surfaces.
8. A metal door construction having front and rear
panels, metal moulding means forming a decorative trim 40
strip and a sound deadening barrier on at least one of
said panels, fastening means securing said metal mould
ing means to said one of said panels, a packing cavity
formed along the rear surface of said metal moulding
means facing said one of said panels, panel engaging sur 45
faces provided at the sides of said packing cavity to com
1,931,125
Balduf _______________ __ Oct. 12, 1933
2,156,669
2,282,946
2,557,502
2,583,78-1
2,602,182
2,698,269
Van Uum _____________ __ May 2,
De R00 _____________ __ Mlay 12,
Goettl ______________ __. Iune 19,
Lindsay ______________ __. Jan. 29,
Johnson _______________ __ July 8,
Sussenbach __________ __ Dec. 28,
2,837,183
2,922,202
Kodaras ______________ __ l an. 26, 1960
2,962,956
Maggar _______________ __ Dec. 6, 1960
27,067
563,000
Great Britain ________ __ Dec. 14, 1908
Great Britain _________ __ July 25, 1944
1939
1942
1951
1952
1952
1954
Heiman ______________ __ lnne 3, 1958
FOREIGN PATENTS
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