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Патент USA US3084620

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April 9, 1963
J. F. GARRlSON ETAL
3,084,610
HOT AIR DIFFUSER
Filed Sept. 11, 1961
4
2 Sheets-Sheet l
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@Wz (3M
A TTORNEY
April 9, 1963
_
J. F. GARRISON ETAL
3,084,610
HOT AIR DIFFUSER
2 Sheets-Sheet 2
Filed Sept. 11, 1961
7.
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United States Patent G
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3,‘d8ll,di?
Patented Apr. 9, 1963
2
1
the top being secured to these lugs by the screws 12‘ and
3,034,610
13 respectively. The end walls have inwardly project
ing base portions 14 having upturned ?anges or lugs
HOT AIR DIFFUSER
Judd F. Garrison and John C. Gwen, Grand Rapids,
Mich., assignors to Grand Rapids Hardware Company,
Grand Rapids, Mich.
Filed Sept. 11, 1961, Ser. No. 137,158
15 on their rear edges disposed on the inner sides of the
bottom portions of the rear wall and secured thereto by
means of the screws 16.
These bottom members have
upwardly projecting inwardly inclined ?ange-like pivot
members 17. The combined front wall and damper mem
ber 18 is curved to correspond to the curvature of the
This invention relates to air di?users of the type com
front edge of the end walls, see FIG. 3, and it is pro
10
monly designated as baseboard or wall diffusers. The
vided with an inwardly projecting integral ?ange 19 of
downwardly facing channel section which is supportedly
main objects of this invention are:
First, to provide an air diffuser of the wall or base
engaged with the pivot members 17 on the bottom mem
board type in which the front portion or wall also
bers, see FIG. 3.
The front wall damper member 18 is provided with
constitutes a damper.
Second, to provide an air diffuser of the above stated 15 an inwardly ‘and downwardly projecting ?ange-like de—
type in which there are no adjustably associated parts
?ector 20 on its upper edge which is disposed in vertically
requiring accuracy or close ?tting, or which are sub
spaced relation to the ?ange 7 and coacts therewith in
ject to vibration as a result of variations in air current
distributing the air longitudinally within the diffuser,
16 Claims. (Cl. 98-40)
entering therein through the conduit, conventionally illus
Third, to provide an air diffuser structure in which 20 trated at 21 in FIG. 2, and which commonly does not
the parts may be readily adapted to diffusers of widely
extend the full length of the diffuser.
varying length without requiring structural variations
To adjustably support the member 18 on its pivot sup
other than the length of the unitary rear wall and top
port 17, the springable tongue-like keeper members 22.
member and of the front wall damper member.
are provided, in the embodiment illustrated these being
Fourth, to provide a combined front wall and damper 25 transversely corrugated providing a series of keepers, as
member which is tiltably or swingably supported and may
is illustrated in FIGS. 2, 3 land 5 and with which the
passing therethrough.
be assembled with or disassembled relative to the as
detents 23 mounted on the inturned ?ange 20‘ coact.
These keepers, in the embodiment illustrated, are integral
Fifth, to provide an air diffuser assembly of the type 30 portions of the end walls, see the blank thereof in FIG.
described in which relatively few screws or bolts are
7, in which the keeper support portion 24 is connected
sociated parts.
required.
to the rear edge of the end wall at 25. In FIG. 7 these
end wall units are simply shown in a blank, fold lines
vention will appear from the description to follow. The
invention is de?ned and pointed out in the claims.
being indicated'by dotted lines. The rearwardly pro
jecting portions 20 of the wall member 18 are provided
with detents 23, which, in the preferred embodiment of
the invention, are formed of non-metallic plastic mate
rial and which have laterally projecting ?ange-like por
tions 27 which are in sliding engagement with the inner
Objects relating to details and economies of the in
A preferred embodiment of the invention is illus
trated in the accompanying drawing, in which:
FIG. 1 is a fragmentary front elevational view of an
air diffuser damper unit embodying our invention.
FIG. 2 is an end elevational view thereof, certain of 4.0 sides of the end Walls, see FIG. 4. The main purpose of
the parts between the end walls being indicated by dotted
such engagement is to center the member 18 between
the end walls and to prevent the edges thereof being in
lines.
FIG. 3 is a vertical cross sectional view on a line cor
scraping engagement with the inner sides of the end walls
so that the ?nish on the inner sides of the end walls is
responding to line 3——3 of FIG. 1.
FIG. 4 is a fragmentary longitudinal sectional view on 45 not scraped or damaged by the adjustment of the member
a line corresponding to line 4—-4 of FIG. 3.
18, as is illustrated by dotted lines in FIG. 3. This en
FIG. 5 is a fragmentary front perspective view illus
gagement with the keeper members also serves to hold
trating the front wall and damper member in one in
the member 18 in assembled relation to the associated
parts, and it is only necessary in assembling or disas
wardly adjusted position.
FIG. 6 is a front view of one of the end members.
sembling to engage the downwardly facing channel-like
FIG. 7 is a blank of the end member illustrated in
?ange 19 with the pivot ?anges 17 on the base member
and insert the detents under the keepers. Another ad
FIG. 6-.
It will be understood that the air diffuser of the ap
vantage of this arrangement is that it prevents vibration
plication is made in varying lengths to meet particular
of the parts when subjected to varying air ?ow.
installation requirements, and one of the attained ob 55
We have illustrated and described our invention in
jects of the invention, as stated, is that this variation in
a highly practical embodiment thereof. We have not
length may be accomplished without any change in struc~
attempted to illustrate modifications which might be de
tural features or details.
sirable for certain adaptations or installations, as it is
The embodiment of our invention illustrated comprises
believed that this disclosure will enable those skilled in
a unitary rear Wall and top member designated generally
the art to embody or adapt our invention as may be
by the numeral 1 and including an upright lower por
desired.
tion 2 of substantial vertical width and of the desired
Having thus described the invention, what is claimed
length, and including a forwardly inclined portion 3
terminating at its upper edge in a top member 4 which
has a downwardly projecing ?ange 5 on its rear edge.
The member 1 has an inwardly and upwardly projecting
?ange 6 on its lower edge terminating in a forwardly and
upwardly projecting air de?ector member 7 extending
as new and desired to secure by Letters Patent is:
1. An air diffuser including a unitary rear wall and
top member comprising an upright lower portion and a
forwardly inclined upper portion of substantial vertical
width terminating at its upper edge in a rearwardly pro~
jecting top portion, said top portion having a downward
ly extending ?ange on its rear edge, end walls having in~
from end to end thereof.
In the embodiment illustrated, the end walls 8 have 70 wardly projecting lugs at their upper ends disposed on
forwardly curved front edges ‘9 and they are provided
the inner sides of and to which said top member and its
with inwardly projecting lugs 10 and 11 which are over
said downwardly projecting ?ange are supportedly con
lapped by the top member and the ?ange 5, see FIG. 3,
8,084,610
Q3
nected, said end walls also having inwardly projecting
base portions to which the rear wall is connected, said
base portions having ?ange-like pintle members at
their front edges, a front wall and damper member hav—
ing an inturned ?ange of downwardly facing channel
section supportedly engaged with said pintle members
on said end members, said front member having an in
wardly and downwardly projecting ?ange-like de?ector on
its upper edge, keeper members having support portions
at their inner ends disposed upon and ?xedly secured
to the rear wall member to project forwardly therefrom
and with their outer edges in thrust engagement with
the end walls, said keeper members having forwardly
projecting transversely corrugated portions providing a
walls and front wall and damper member for supporting it
in its adjusted position as a damper.
4. An air diffuser including a unitary rear wall and
top member comprising an upright lower portion and a
forwardly inclined upper portion of substantial vertical
width terminating at its upper edge in a rearwardly pro
jecting top portion, said top portion having a downwardly
extending ?ange on its rear edge, said member having an
inturned lower portion terminating in a forwardly and
upwardly projecting ?ange-like de?ector of substantial
width spaced vertically from the lower edge of the rear
wall, end walls having inwardly projecting lugs at their
upper ends to which said top member is supportedly con
nected, said end walls also having inwardly projecting
plurality of keepers, and detents ?xedly mounted on said
base
portions provided with upwardly projecting ?anges
15
inwardly projecting portion of said front wall and
damper member in coacting relation with the under sides
of said keeper members, said detents being of non-metallic
material and having sliding engagement with the inner
on their rear edges to which the rear Wall is connected,
said base portions having upturned inwardly inclined
?ange-like pintle members on their front edges, a front
wall and damper member of curved vertical section
sides of said end walls with the ends of the front wall
corresponding to the curvature of the lower portions of
damper member in spaced relation to the end walls 20 the front edges of said end walls and having an inturned
and constituting end thrust supports for said front wall
?ange of downwardly facing channel section supportedly
damper member.
engaged with said pintle members on said end members,
2. An air diffuser including a unitary rear wall and
said front member having an inwardly and downwardly
top member comprising an upright lower portion and a 25 projecting ?ange-like de?ector on its upper edge, and co
forwardly inclined upper portion of substantial vertical
acting keepers and detents on said end Walls and front
width terminating at its upper edge in a rearwardly pro
wall and damper member for supporting it in its ad
jecting top portion, end walls having inwardly project
justed position as a damper.
ing lugs at their upper ends to which said top member
5. An air diffuser including a unitary rear wall and
is supportedly connected, said end walls also having in 30 top member comprising an upright lower portion and a
wardly projecting base portions to which the rear wall is
forwardly inclined upper portion of substantial vertical
connected, a front wall and damper member hingedly
width terminating at its upper edge in a rearwardly pro
mounted on said end members, said front member hav
jecting top portion, said top portion having a downward
ing an inwardly and downwardly projecting ?ange
ly extending ?ange on its rear edge, said member hav
like de?ector on its upper edge, keeper members having
ing an inturned lower portion terminating in a forwardly
support portions at their inner ends disposed upon and
and upwardly projecting ?ange~like de?ector of substan
?xedly secured to the rear wall member to project for
tial width spaced vertically from the lower edge of the
wardly, said keeper members having forwardly projecting
rear wall, end walls having vertical rear edges and for
transversely corrugated portions providing a plurality of
wardly curved rearwardly inclined front edges disposed
keepers, and detents ?xedly mounted on said inwardly
at the ends of said rear wall ‘and top member and having
projecting portion of said front wall and damper member
inwardly projecting lugs at their upper ends disposed on
in coacting relation with the under sides of said keeper
the inner sides of and to which said top member and its
members, said detents being of non-metallic material and
said downwardly projecting ?ange are supportedly con~
having sliding engagement with the inner sides of said
nected, said end walls also having inwardly projecting
end walls with the ends of the front wall damper member
base portions provided with upwardly projecting ?anges
in spaced relation to the end walls and constituting end
on their rear edges to which the rear wall is connected,
thrust supports ‘for said front wall damper member.
said base portions having upturned ?ange-like pintle men1~
3. An air diffuser including a unitary rear wall and top
here on their front edges, a front wall and damper mem
member comprising an upright lower portion and a for
ber of curved vertical section corresponding to the curva
wardly inclined upper portion of substantial vertical width 50 ture of the lower portions of the front edges of said end
terminating at its upper edge in a rearwardly projecting
walls and having an inturned ?ange of downwardly facing
top portion, said top portion having a downwardly extend
channel section supportedly engaged with said pintle
ing ?ange on its rear edge, said member having an in
members on said end members, said front member having
turned lower portion terminating in a forwardly and up
an inwardly and downwardly projecting ?ange-like de
wardly projecting ?ange-like de?ector of substantial width
?ector on its upper edge, and means for adjustably sup
spaced vertically from the lower edge of the rear wall, end
porting said front member.
walls having vertical rear edges and forwardly curved
‘6. An air diffuser including a unitary rear wall and
rearwardly inclined front edges disposed at the ends of said
top member comprising an upright lower portion and a
rear wall and top member and having inwardly projecting
forwardly inclined upper portion of substantial vertical
lugs at their upper ends disposed on the inner sides of 60 width terminating at its upper edge in a rearwardly pro
and to which said top member and its said downwardly
jecting top portion, said member having an inturned lower
projecting ?ange are supportedly connected, said end
walls also having inwardly projecting base portions pro~
vided with upwardly projecting ?anges on their rear edges
to which the rear wall is connected, said base portions hav
ing upturned inwardly inclined ?ange-like pintle members
on their front edges, a front wall and damper member of
curved vertical section corresponding to the curvature of
the lower portions of the front edges of said end walls and
having an inturned ?ange of downwardly facing channel
section supportedly engaged with said pintle members on
said end members, said vfront member having an inwardly
and downwardly projecting ?ange-like deflector on its
upper edge, and coacting keepers and detents on said end
portion terminating in a forwardly and upwardly project
ing flange-like de?ector of ‘substantial width spaced ver
tically from the lower edge of the rear wall, end walls
having vertical'rear edges and forwardly curved rear
wardly inclined front edges disposed at the ends of said
rear wall and top member and having inwardly project
ing lugs at their upper ends disposed on the inner sides of
and to which said top member is connected, said end
walls also having inwardly projecting base portions pro
vided with upwardly projecting ?angeson their rear edges
to which the rear wall is connected, said base portions
having upturned ?ange-like pintle members on their front
edges, a front wall and damper member of curved vertical
75 section corresponding to the curvature of the lower por
3,084,610
tions of the front edges of said end walls and having an
inturned ?ange of downwardly facing channel section
supportedly engaged with said pintle members on said
end members, said front member having an inwardly and
downwardly projecting ?ange-like de?ector on its upper
edge, and means for adjustably supporting said front
member.
6
mounted for tilting adjustment between said end walls,
keeper members disposed at the inner side of said end
walls provided with a plurality of keepers, and detents
mounted on said ‘front wall in coacting sliding engage
ment with said keeper members, said detents being of
non-metallic material and having lateral thrust engage
ment with the inner sides of said end walls.
12. An air diffuser including a rear wall, end walls to
7. An air diffuser including a rear wall having an in
which said rear wall is ?xedly connected and projecting
turned lower portion terminating in a forwardly and up
forwardly therefrom, a front wall and damper member
wardly projecting ?ange-like de?ector of substantial width 10 mounted for tilting adjustment between said end walls,
spaced vertically from the lower edge of the rear wall,
keeper members disposed at the inner sides of said end
end walls connected to said rear wall to project forwardly
walls provided with a plurality of keepers, land detents
therefrom, said end walls having inwardly projecting base
mounted on said front wall in coacting sliding engage
portions provided with upturned ?ange-like pintle mem
ment with said keeper members.
15
bers on their front edges, a front wall and damper mem
13. An air diffuser including a rear wall and a top, end
ber having inturned ?anges of downwardly facing chan
walls projecting forwardly from said rear wall and ?xedly
nel section supportedly engaged with said pintle members
connected thereto, a front wall and damper member
hingedly connected at its lower edge to said end walls
on said end members, said front member having an in
wardly and downwardly projecting ?ange-like de?ector on
for swinging adjustment therebetween with its upper edge
its upper edge, keeper members provided with a plurality 20 in spaced relation to the top, springablle keeper members
of keepers disposed on the inner sides of said end walls,
mounted on said rear wall and having forwardly project
and detents ?xedly mounted on the inwardly projecting
ing keeper members each provided with a series of aligned
portions of said front wall and damper member in coact
keepers, and detents mounted on said front wall and
ing relation with the said keeper members, said keeper
damper member in coacting relation with said keeper
25
members acting to adjustably support said front mem
members, said detents being of nonmetallic material and
ber, said detents being of nonmetallic material and hav
having frictional sliding engagement with the inner sides
ing thrust sliding engagement with the inner sides of the
of the end walls with the ends of the front wall and
end walls and acting to hold the ends of the front wall
damper member in spaced non-frictional relation to the
damper member in spaced relation to the end walls and
sides of the end walls.
coacting with said keeper members to prevent vibration 30 inner
14. An air diffuser including a rear wall and a top, end
of said front wall damper member.
walls projecting forwardly from said rear wall and ?xedly
8. An air diffuser including a rear wall having an in
connected thereto, a front wall and damper member
turned lower portion terminating in a forwardly and up
hingedly connected at its lower edge to said end walls
wardly projecting ?ange-‘like de?ector of substantial width
‘for swinging adjustment therebetween with its upper edge
35
spaced vertically from the lower edge of the rear wall,
in spaced relation to the top, springable keeper members
end walls connected to said rear wall to project forwardly
mounted on said rear wall and having ‘forwardly project
therefrom, a front wall and damper pivotally mounted on
ing keeper members each provided with a series of aligned
said end walls, said front member having an inwardly
keepers, land detents mounted on said front wall and
and downwardly projecting ?ange-like de?ector on its
40 damper member in coacting relation with said keeper
upper edge, keeper members provided with a plurality of
members.
keepers disposed on the inner sides of said end walls, and
15. An air diffuser including a rear wall, end walls
detents ?xedly mounted on the inwardly projecting por
?xedly connected to said rear wall to project forwardly
tions of said front wall and damper member in coacting
therefrom, said end walls having inwardly projecting base
relation with the said keeper members, said keeper mem
portions provided with upturned ?ange-like pintle mem
bers acting to adjustably support said front member.
45
9. An air diffuser including a rear wall, end walls to
bers on their front edges, a front wall and damper mem
ber having an inwardly projecting ?ange of downwardly
facing channel section supportedly engaged with said
which said rear wall is ?xedly connected vand projecting
forwardly therefrom, said end walls having inwardly pro
pintle members on said end members, keeper members
jecting pintle members thereon, a front wall and damper
disposed at the inner sides ‘of said end members and pro
member having an inturned ?ange of downwardly facing 50 vided with a series of aligned keepers, and detents on said
channel section supportedly engaged with said pintle
front wall and damper member coacting with said keeper
members ‘on said end members, keeper members sup
members, said keeper members acting to urge said front
portedly mounted on said rear wall to project forwardly
wall bearing members upon and in retaining engagement
therefrom at the inner sides of said end walls, said keeper
with said pintle members.
members being provided with a plurality of aligned keep
ers, and detents mounted on said front wall in coacting
sliding engagement with said keeper members, said de
tents being of nonmetallic material and having lateral
thrust engagement with the inner sides of said end walls.
16. An air diffuser including a rear wall, end walls
?xedly connected to said rear wall and projecting for
wardly therefrom, members projecting upwardly from
said end walls, a front wall and damper member having
downwardly ‘facing bearings supportedly and releasably
10. An air diffuser including a rear wall, end walls to 60 engaged with said pintle members, keeper members dis
which said rear wall is ?xedly connected and projecting
forwardly therefrom, said end walls having inwardly pro
jecting pintle members thereon, a front wall and damper
member having an inturned ?ange of downwardly facing
posed on the inner ‘sides of said end members, and detents
on said front wall and damper member coacting with said
keeper members, said keeper members acting to urge said
front wall bearing members upon and in retaining engage
channel section supportedly engaged with said pintle mem
ment with said pintle members.
bers on said end members, keeper members supportedly
mounted on said rear wall to project forwardly therefrom
at the inner sides of said end walls, said keeper members
being provided with a plurality ‘of aligned keepers, and 70
detents mounted on said front wall in coacting sliding
engagement with said keeper- members.
ll. An air diffuser including a rear wall, end walls to
which said rear wall is ?xedly connected and projecting
forwardly therefrom, a front wall and damper member 75
References Cited in the ?le of this patent
UNITED STATES PATENTS
1,942,137
2,627,800
2,780,979
2,844,234
3,002,443
Connell
Brandes
De Roo
Brandes
Brandes
et al. _________ .._ Jan. 2,
______________ _._ Feb. 10,
______________ __ Feb. 12,
______________ .. July 22,
_______________ __ Oct. 3,
1934
1953
1957
1958
1961
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