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Патент USA US3069549

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Dec. 18, 1962
3,069,540
P. A. JONES
RECESSED LIGHTING FIXTURE HAVING I-IINGED LIGHT DIFFUSER COVER
Filed Jan. 14, 1959
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Dec. 18, 1962
P. A. JONES
3,069,540
RECESSED LIGHTING FIXTURE HAVING HINGED LIGHT DIFFUSER COVER
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,669,561
RECESSED LIGHHNG FÍXT‘URE Hari/'ENG HHN
Preston A. iones,
LIGHT
San DlFE‘lFUâE-ER
Rafael, Caiiâ, assigner', hy mestre
assignments, to said Pre ten A. iones,
Rafaei,
Calif., and Wallace D. Ream/ich, Berkeley, tCaiif.
Filed lan. ld, i959, Ser. No. 736,391@
8 Claims. (Cl. 24d-_147)
between the respective flanges when the cover is closed,
nor will any hinge mechanism be visible.
A further object of the invention is to provide a unit
as hereinabove described in which shock absorbing means
are provided so as to cushion the downward swinging
movement of the cover, while still permitting deliberate
full opening thereof.
Yet another object of the invention is to provide a re
cessed fixture of the type described in which the diffuser
The present invention generally relates to the construc 10 element is resiliently mounted in its supporting frame in
tion of recessed lighting fixtures adapted for iiush mount
such manner as to facilitate installation and removal
ing in a ceiling or the like, and is more particularly di
thereof while at the same time protecting the glass or
rected towards the manner and means of mounting a
similar material comprising the diffuser from breakage
translucent cover member on such a fixture so as to permit
due to frame jarring or the like.
The invention possesses other objects: and features of
advantage, some of which, with the foregoing, will be set
ready access to the interior thereof such as for changing
the light bulb.
As is well known in the art, recessed lighting fixtures
conventionally include a housing provided with a lamp
socket adapted for electrical connection to a power source.
ln most instances, the lower opening to the housing is dis
posed substantially ilnsh with a ceiling and is covered by
a translucent member which seems to diffuse the light
emitting from the lamp, as well as imparting an orna
menlal effect to the unit. Obviously, since the translucent
member or cover, when in operative position relative to
the housing, completely cuts off access to the housing
chamber and the lamp disposed therein, the cover must
be arranged for either complete removal or movement to
an inoperative position so that the lamp may be periodi
cally replaced.
It will be appreciated that if the cover is attached to the
housing with mounting screws or the like, the job of re
forth in the following description of the preferred form of
the invention which is illustrated in the drawings accom
panying and forming part of the specification. It is to be
understood, however, that variations in the showing made
by the said drawings and description may be adopted
within the scope of the invention as set forth in the claims.
Referring to said drawings:
FIGURE l is a top plan View of the fixture of the pres
ent invention.
FIGURE 2 is a horizontal cross-sectional view taken
substantially in the plane indicated by line 2--2 of FIG
URE l, and illustrating the diffuser in closed position.
FIGURE 3 is a Vertical cross-sectional view taken sub
stantially in the plane indicated by line 3--3 of FIGURE
l, but illustrating the diffuser in an open. position.
FIGURE 4 is a vertical cross-sectional view taken sub
placing a lamp becomes ditlicult, particularly when the
stantially in the plane indicated by line 4--4 of FIGURE
ceiling is a high one, and no use can be made of lamp
3, and on an enlarged scale.
FIGURE 5 is a vertical cross-sectional view of the
holding poles which are frequently employed for replace
ment of burnt out ceiling lamps. Therefore, it has been
previously suggested to hinge the cover to the housing so
as to permit access to the housing chamber without requir
ing the entire removal of the cover. While this latter type
of construction has obvious advantages over a threaded
connection between the cover and housing or a fastener
screw arrangement, difficulty has heretofore been er1
counìered in providing a proper lock or latch mechanism
latch mechanism, taken substantially in the plane indi
cated by line 5”»-5 of FÍGURE l, and showing the parts
in their closed or operative relationship: and on an en
larged scale.
FÍGURE 6 is a cross-sectional view taken substantially
in the plane indicated by line 6--6 of FIGURE 5.
FÉGURE 7 is a horizontal cross-sectional view taken
substantially in the plane indicated by line 7_7 of FIG
for releasably retaining the cover in closed position, in
preventing injury to the glass in other translucent diffuser
member during opening and closing thereof, and in other
trating the position of the parts during release of the latch
wise damaging the parts during movement, especially
mechanism.
when such movement is being effected by a person using
a long pole or the like.
Accordingly, it is an object of the present invention to ‘
provide a recessed lighting fixture having a housing and a
diffuser supporting frame in which one portion of the
frame is hingedly supported by the housing and another
portion ofthe frame and its associated housing portion are
provided with improved cooperating latch elements where
by the frame will be positively retained in a closed position
but which may be easily swung downwardly to an open
position by merely pushing upwardly on the frame, there
by permitting the use of relamping poles for opening and _
closing the housing as well as replacement of the lamps
therein.
Another object of this invention is to provide a fixture
of the character described in which the housing is pro
URE 5.
FiGURE 8 is a view similar to FiGURE 5, but illus
4
The present invention is herein disclosed in connec
tion with a recessed lighting ñxture of the type adapted
for flush ceiling mounting, and which includes a gen
eraily conventional rectangular lamp housing l2, having
side walls t3, insertible into an opening provided in the
ceiling. As is well known in the art, the housing is usu
ally provided with a »top wall, not shown, which defines
with the walls 13 a downwardly directed lamp chamber
i4. A lamp socket, likewise not illustrated, is mounted
in the chamber for receiving a lamp. This general type
of construction is well known, and as an example thereof,
reference is made to my prior Patent No. 2,561,986.
As hereinabove mentioned, in practically all instances,
an etched glass or other type of translucent light diffuser
is positioned across the lower end of the housing to form
a bottom closure for the chamber 14.
While this pro
vided with an outer frame member having a flange posi
vides an ornamental appearance as well as serving to
tioned in the general plane of the ceiling opening and the
diffuser is provided with a similar flange disposed within
the confines of the outer frame flange and substantially
immediately adjacent thereto, and in which means are
provided for resiliently urging the diffuser frame into
proper central position within the outer frame during clos
ing movement thereof so that no large spacing will exist
diffuse the light rays, it will be understood that lamps
must be periodically replaced, and therefore the diffuser
member must be removable from its normal closure
defining position.
fn accordance with the present invention, access may
be had to the chamber 14 by providing a pivotal con
nection between the housing and diffuser so as to permit
the latter to swing downwardly from a closed position
assalito
El
as shown in FlGURE 2 to an open position as best
shown in FÍ^URE 4, and the novel features of this con
nection will be hereinafter more fully described. With
a pivotal arrangement, additional means must of neces
sity be provided »to releasably retain the diffuser in its
closed position, and this construction will likewise be
later described in detail.
The housing l2 is provided with an outwardly extend
ing horizontal flange 16 extending completely around
shorter slot effectively prevents accidental dislodgrnent
of the frame by limiting the amount of forward pin travel
during opening ofthe frame.
u
During downward movement of frame 27 during open
ing thereof, the support for the frame resides solely in the
pin and slot connection, and consequently, gravital force
tends to rapidly swing the frame until flange 29 thereof
abuis the fixed frame web lâ in parallel relation.. This
rapid swinging and sudden stoppage could result iii POS-l
the housing, the upper surface of such flange bearing
sible damage to or excessive wear on the various parts of(
against the ceiling, and the innermost portions defining
invention
the ñxture,a and
cushioning
consequently,
or shock
as an
absorbing
important
means
partici
is prof
a rectangular opening in communication with the cham~
ber i4. As here illustrated, the flange is not formed as
an integral portion lof the housing but rather as a portion
of an outer frame member ïl’ï which includes a web lâ
positioned adjacent the inner surface of the housing and
wiiich extends vertically upwardly from the inner por
vided which yieldably stops the frame in an intermediate
open position (shown in FÍGURE 4) while permitting
deliberate full opening thereof with the flange 29 and
web fd in the aforementioned abutting relationship.
Such means, as here shown, comprises a leaf spring ¿t4
having one end thereof attached by a screw and nul 45
tions of ilange i6. Frame i7 may be iixedly mounted on
to the fixed frame lip 23. The main body 47 of the spring
the housing in any suitable manner such as by machine
screws 19 extending through apertures provided in an 20 is curved along the length thereof and its distal end is
provided with a reversed curved portion 48. Adjacent
inwardly >directed horizontal wall extension 2l at the
the distal end, a tongue 49 extends outwardly from the
upper end of the web with the screws engaging threaded
upper edge of the body and is normally positioned be
openings in brackets Z2, the latter having a first portion
tween the lower edge of the outer frame lip 23 and the
lying against and mounted on the housing wall and a
The connecteA
second normally related portion in which the screw may 25 upper edge of the inner frame web
end portion of the spring is provided with a normally
be engaged. For a purpose later to be explained, the
related and outwardly directed ilange 5l which limits
innermost end of the extension or wall 2i is provided
downward swinging of the body about the bolt 46. Be
with a downtuined lip 2.3 so that the upper end of web
fore the inner frame is installed, the spring may be posi
1S is formed with an inverted channel.
A glass or similar light diffusing element 26 is adapted 30 tioned so that the tongue overlies the wall 2l with the
spring body lying against the lip 23. After installation of
to be positioned within the opening defined by frame
17, and such glass is preferably supported in what might
be termed an inner frame 27 since the latter is adapted
the inner frame, the spring is flexed inwardly relative to'
an outwardly `directed flange 29, the latter serving as a
support for the glass 2o. Since the inner frame is the
respective frame members.
its associated frame portion until the tongue clears the`
wall 2l, and then swung downwardly until the spring ac
t-o be contained entirely within the outer or fixed frame
17. The inner frame may simply include a web 28 and 35 tion forces the tongue between lip 23 and web 2S of the’
As will be understood from the foregoing, as the inner
frame 27 swings downwardly, the upper edge web 23
thereof will bear against the spring body adjacent the
loads, the glass is preferably resiliently retained in its
position against flange 29. This resilient mounting is 40 ends of the latter with the desired resulting cushioning
effect. However, the frame may be readily deliberately
effected by means of a plurality of U-shaped clips 31
moved to a full open position merely by forcing the same
releasably engageable with inwardly offset portions of
against the resistance of the spring.
web 28, the innermost leg of each clip having a curvato
A further important feature of advantage is found in
leaf spring 32 adapted to resiliently bear against the up
connection with the just described leaf spring arrange
per surface of the glass. ln this manner the glass may
ment. As previously discussed, the pins 42 move for
be readily installed on frame 27, and yet be cushioned
wardly along the slots 4i during opening of the frame
against loads, such as when a person pushes upwardly
and obviously must be moved rearwardly during closing
against the glass in either moving the glass to its closed
of the frame. While the spring body bears against the
position or in effecting release of the latch mechanism.
upper edge of the web 2t? as the frame approaches its
Also, it will be noted that the outer legs of the clips are
positioned inwardly of web 2S so as not to interfere with
full open position, it will be seen that the spring body
bears against the inner surface of the web as the frame
the inner frame movement.
moves towards its closed position thereby urging the web
Inner frame 27 and the glass mounted thereon are
and the pins carried thereon rearwardly and permitting
mounted for pivotal movement between the closed posi
tion shown in FIGURE 2 wherein flange 2% is immediate 55 proper closure and alignment of the frame flanges.
lt should also be noted that since the length of tongue
ly adiacent and ccs-planar with the outer frame flange lo,
and an open angularly related position shown in FlG
49 is restricted by the distance between the outer frame
URES 3 and 4 to provide access to the housing chamber
web Slg and ylip Z3, the wall 2l and lip 23 is provided witlil14. By virtue of the desirable positioning of the flanges
a projection 53 which prevents accidental dislodgmentV of
when the inner frame is closed as just described, the 60 the tongue while the inner frame is being opened.
swinging or pivotal movement of inner frame 27 cannot
With the foregoing construction, it will be appreciated
be effected by a simple hinge mechanism since the pivot
that the inner frame Z7 may be readily moved between
axis must shift during frame movement. To accomplish
its open and closed position. Therefore, there will now
be discussed the means and manner of releasably retain
the foregoing, and likewise permit installation of frame
27 on frame il? after the latter is mounted in a ceiling, 65 ing the frame in its normal closed position, such means
comprising an important feature of the present invention..
the Ifollowing construction is utilized. As will be noted,
The retaining means generally include cooperating latch
two opposed sides of the fixed frame web ’lâ are provided
members 56 and 57 carried by and positioned o-n the-Í
with slots di. positioned adjacent what will be hereafter
forward end of the inner and outer frame members re
regarded the rear end portion of the frame. The inner
frame is provided with opposed outwardly extending pins 70 spectively. The latch members are arranged to lock thel
inner frame against downward swinging movement upon
42 engageable in said slots and of a size to permit sliding
initial engagement of the members, and permit ready
movement along the slots as well as pivotal movement.
release upon further upward movement of the inner frame
Attention is directed to the fact that one of the slots is
past its horizontal normally closed position. The detailsI
substantially longer than the other slot. The longer slot
allows easier installation of the inner frame, while the 75 of construction `of the members 56 and 57. alie best illusu
movable member and exposed to impacts or other shock A
3,069,540
trated in FÍGURES 5 through 8 of the drawings, the iirst
three of said figures showing the position of the parts in
the normal closed position of the frame with ñanges 16
`and 29 substantially coplanar, and the latter ñgure show
ing the releasing position of the parts upon raising of the
inner frame.
Referring first to latch member 56, the same will be
and an outwardly directed flange, opposed sides of said
web adjacent the rear ends thereof being provided with
slots extending generally parallel to said ñange, a second
generally rectangular frame member having a web ñtting
within the web of said first frame member and an inward
ly directed ñange, opposed extensions on the web of said
second frame engageable in said slots, the front portions
of said webs being provided with cooperating latch ele
ments for releasably retaining said frame members in
seen to include a housing 6l extending upwardly from the
horizontal ñxed frame wall 2l. A pin 62 extends between
opposed walls of the housing forwardly and rearwardly, as
the term is used herein, and parallel to wall 2l, and serves
as a pivot for a lever 63 which is positioned between web
18 and lip 23 and whose lower end extends below the
lower edge of the lip. Lever 63 has a forwardly directed
detent 64 adjacent the lower end thereof, and the outer
face of the detent slopes rearwardly and downwardly, as
best seen in FIGURE 6. A torsion spring 66 normally
closed relation with the ñanges thereof substantially adja
cent and coplanar, said second frame being freely swing
able upon release of said latch elements about said exten
sions, said extensions being disposed adjacent the rear of
said slots when said second frame is closed and being
slidable forwardly along said slots as said frame is opened,
and resilient means interposed between said frame mem
bers and engaged with the inner surface of the web of
said second member and normally urging said extensions
urges the lever in a counterclockwise direction as viewed
in FIGURE 5, while a coil spring 67 is utilized to normal
rearwardly in said slots, said means yieldably resisting
swinging opening of said second member and engaged
ly force the lever forwardly, i.e., in the direction of the
detent.
Lever 63 is designed to cooperate with latch member
57 for effecting the previously discussed locking and re
leasing actions.
with an edge of said web to yieldably retain said member
in a predetermined partially open position.
2. In a lighting fixture housing including an outer frame
Member 57 includes a pair of spaced
posts 7l extending upwardly from flange 29 and inwardly'
of web 28, the upper ends of the post terminating above
the upper edge of the web. The right hand portion of
the member, as seen in FIGURE 5, is in general align
ment with the normal position of lever 63 and the upper
portion thereof is provided with a downwardly and rear
wardly directed cam 72 which intercepts the comparably
sloped detent face as the parts are moved into engage
ment thereby forcing the lever rearwardly against pressure
of spring 67. As the detent rides downwardly along the
cam, the spring 67 will then urge the detent into a recess
73 provided in member 57 immediately subjacent said
cam. `ìVith the detent so positioned, no downward move
adapted for installation in a ceiling opening and an inner
N)
l
frame
means
frame
frame
adapted to support a light diffusing element, and
pivotally connecting said inner frame to said outer
adjacent an end thereof for swinging said inner
between a closed position substantially copla-nar
with said outer frame and an open position angular-ly
related thereto; the combination therewith of cooperating
latch means on said frames adjacent the other end thereof
releasably retaining said frames in closed relation, said
latch means including a lever pivotally mounted on one of
said frames for rocking movement about an axis parallel
to the plane of said one frame, said lever having a detent
adjacent an end thereof extending generally parallel to
. said axis, means resiliently urging said lever in one direc
ment of the inner frame is possible and the apparatus
tion about its pivotal mounting and in a second direction
will be in its normal closed and locked position.
normally related thereto and towards the direction of said
In order to open the inner frame, it is only necessary 40 detent, said latch means further including a latch member
to push upwardly on the inner frame adjacent its latch
mounted on the other of said frames having a cam inter
member. Such further upward movement of the frame,
cepting said detent during closing movement of said
as shown in FIGURE 8, will cause the detent to move
frames and moving said lever oppositely to said second
downwardly and clockwise against action of torsion spring
66 due to engagement of the detent with a downwardly
and laterally inclined cam 76 positioned subjacent the
recess 73.
At the same time, the detent will be forced
rearwardly and out of the recess by engagement with
direction, means deiining a recess adjacent said cam for
receiving said detent when said frames are in fully closed
relation, and a second cam on said latch member moving
said lever contra to both said first and second direction
upon movement of said inner frame past its fully closed
another cam 77 positioned to the left of the recess and
position.
which slopes rearwardly and laterally. With the detent
3. In a recessed lighting fixture having a housing adapt
ed for insertion into a ceiling opening, said housing in
cluding a generally rectangular outer frame including a
web portion and an outwardly extending flange adapted
to lie substantially iiush with a ceiling around an opening
therein, opposed sides of said webs having narrow slots
extending from adjacent the rear ends thereof and termi
nating medially of the length of such sides, said housing
free of the recess, further relative downward movement is
prevented by engagement thereof with a pocket 78 at the
bottom of cam ’76. The cams 76 and 77 prevent the
springs 66 and 67 from returning the detent to the recess,
and when the lever is positioned as shown in FIGURE 8,
the lever will be on the left hand side of member 56 and
free to pass the same, permitting release of the inner
frame. As soon as the inner frame has effected separation
of the lever and member S7, the lever is free to again
move under influence of spring 66 to be in position to en
gage cam 72 when the frame is again raised.
further including an inner frame adapted to support a
light diffusing element, pin means extending from opposed
69 sides of said inner frame and engaged in said slots for
pivotally supporting said inner frame on .said outer frame
From the foregoing, it will be appreciated that opening
for swinging movement between a closed position where
and closing of the unit may both be effected by merely
in said frames are substantially coplanar and an open
pushing upwardly on the frame 27 without any kind of
position wherein said frames are angularly related, said
tools or special equipment. Consequently, the present ñx
inner frame having a ñange within and substantially co
ture lends itself to lamp replacement with conventional
planar and immediately adjacent said outer frame ñange
relamping poles, since the resilient mounting of the glass,
in closed position of said inner frame, cooperating latch
the cushioning against jar upon opening, and the resilient
means releasably retaining said frames in closed relation,
urging of the inner frame into its proper position for
said inner frame being movable from said closed position
closure, all permit such remote and relatively rough 70 to a full open position substantially at right angles to the
handling without danger of damage to the glass of other
closed positions thereof; the combination therewith of
parts of the structure.
means interposed between said frames resiliently limiting
What is claimed is:
opening of said inner frame to a position intermediate
1. A device of the character described comprising a
said full open and closed positions while yieldably permit
first generally rectangular frame member having a web 75 ting the full opening thereof, said last named means en
aosasao
gaging said inner frame for resiliently urging the latter
and adapted to support a light ditiusing element, and
and the pin means carried thereby towards an end of said
slots.
4. A device as set forth in claim 3 in which said last
named means includes a curvate leaf-like spring having
one end portion attached to said outer frame and another
means pivotally mounting sa-id inner frame on said outer
frame for movement between a closed position wherein
5. In a lighting fixture housing having an outer traine
said inner frame web is disposed within and closely adja
cent said outer frame web and said flanges are disposed
in substantially coplanar relation and an open position
wherein the general planes of said frames are angularly
related; the combination therewith of spring means
adapted for ñxed mounting in a ceiling opening, an inner
mounted on a portion of one of said webs and engaging an
portion thereof bearing against said inner frame.
glass-supporting~iran1e, and means pivotally mounting
adjacent portion of the other web and normally urging
said inner frame to said outer frame for movement be
tween a closed position wherein said inner frame is dis
the two web portions together, and said spring means en
gaging said portion of said other web upon opening of
said inner frame to yieldably resist said opening move
ment and to resiliently limit the extent of such movement.
8. A fixture housing as set forth in claim 7 in which
said spring means includes a curvate leaf spring having
an end portion normally bearing against an inner surface
of said inner frame web portion, and said leaf spring
posed within> and substantially coplanar with said outer
frame and an open position wherein said frames are
angularly related; the combination therewith of latch
means on said frames releasably retaining said inner frame
in said closed position, said latch means including a detent
carried by one of said frames, spring means normally
having an angularly related projection engaging an edge
urging said detent in a iirst direction parallel to the axis
of said pivotal mounting means and in a second direction 20 of said inner frame web portion so as to resiiiently re
tain the inner frame in a predetermined open position.
normal to said axis and towards a portion of the other of
said frames, said other frame having a recess receiving
References *Cited in the tiie of this patent
said detent upon movement thereof to said closed position
for releasably locking said frames, and said other frame
further having means for urging said detent in directions
UNITED STATES PATENTS
contra to said ñrst and second directions and out of said
recess upon movement of said inner frame past the nor
mally closed position thereof.
6. A fixture housing as set forth in claim 5 in which
said last named means includes a pair of cams positioned 30
adjacent said recess and engaging said detent upon said
latter movement of said inner frame.
1,910,542
2,510,873
2,644,076
Hendee ______________ __ May 23, 1933
Early _________________ __ lune 6, 1950
Keegan ______________ __ June 30, 1953
2,664,590
2,794,664
2,816,216
2,817,554
Allen _________________ __ Jan. 5,
Kruger _______________ __ June 4,
Dasher _______________ __ Dec. 10,
Hasselmark __________ __ Dec. 24,
FOREIGN PATENTS
7. In a lighting íixture housing comprising an outer
frame having a web and an outwardly directed flange, an
inner frame having a web and an inwardly directed ñange
1954
1957
1957
1957
3
529,447
774,198
Canada ______________ __ Aug. 21, 1956
Great Britain __________ __ May 8, 1957
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