U.S. patent number 3,670,797 [Application Number 05/049,785] was granted by the patent office on 1972-06-20 for folding closure construction.
This patent grant is currently assigned to Weather Control Shutters, Inc.. Invention is credited to John H. Sassano.
United States Patent |
3,670,797 |
Sassano |
June 20, 1972 |
**Please see images for:
( Certificate of Correction ) ** |
FOLDING CLOSURE CONSTRUCTION
Abstract
This disclosure concerns an accordian fold closure panel of the
type pendantly supported on elevated trackway structure and the
type adapted for embodiment in a folding door or window closure or
in a pendant folding curtain wall closure. Each hinge joint
connection joining adjacent slat elements of the folding closure
includes mating pintle and groove portions formed respectively on
confronting edge margins of each adjacent pair of vertical slat
elements of tee folding closure. The pintle structure of each slat
hinge connection is of slotted tube form defining a hollow core
axial interior extending coextensive of the pintle structure. The
opposite end portions of the hollow axial interior of the pintle
structure of each hinge joint connection preferably provide means
for fixedly receiving upper and lower oppositely projecting
threaded screw elements: an upper hanger screw element is
threadedly fixed in the upper interior of the pintle structure of a
respective hinge joint connections and pendantly supports the
folding closure panel from elevated trolley means; a lower guide
screw is threadedly fixed in the lower interior of the slotted tube
pintle structure and supports guide bearing means operative in
grooveway structure formed in horizontal sill means of the folding
closure apparatus.
Inventors: |
Sassano; John H. (Hollywood,
FL) |
Assignee: |
Weather Control Shutters, Inc.
(Broward County, PA)
|
Family
ID: |
21961721 |
Appl.
No.: |
05/049,785 |
Filed: |
June 25, 1970 |
Current U.S.
Class: |
160/118; 160/199;
160/235; 160/183; 160/206; 292/128 |
Current CPC
Class: |
E06B
3/481 (20130101); E05D 15/26 (20130101); E05Y
2900/132 (20130101); Y10T 292/0934 (20150401) |
Current International
Class: |
E05D
15/26 (20060101); E06B 3/32 (20060101); E06B
3/48 (20060101); E06b 003/48 () |
Field of
Search: |
;160/118,229,196,199,206,231R,235,84 ;292/128,DIG.46 |
References Cited
[Referenced By]
U.S. Patent Documents
Primary Examiner: Williamowsky; David J.
Assistant Examiner: Kannan; Philip C.
Claims
What is claimed is:
1. A folding closure structure comprising,
A. a closure panel of accordian fold configuration adapted to be
bidirectionally moved from open to closed positions including,
1. a plurality of alternatingly arranged edgewise hinged, extruded,
vertical slat elements of uniform cross sectional
configuration,
2. a series of inside hinge joint connections,
3. a series of outside hinge joint connections, said inside and
outside hinge connections being alternatingly arranged and hingedly
connecting respectively adjacent vertical closure slat elements,
each of said inside and outside hinge connections being comprised
of,
a. a groove, integrally extruded along one vertical edge of each of
said slats in the form of a first tubular segment, the axis of
which is radially disposed, along its length, in the plane of at
least a portion of said slat,
b. a second tubular segment, similarly formed, along the opposed
vertical edge of said slat, having a reduced diameter for sliding
engagement, in pintle fashion, within said first tubular segment of
the adjacent slat element;
B. a header rail means including,
1. a longitudinally extending upper trackway;
C. trolley means, operably supported on said trackway,
including,
1. a trolley frame means to operably support a plurality of trolley
wheels,
2. a hanger screw member extending downwardly through each trolley
frame and including a lower portion threadedly engaging axially
within the upper end portion of each of said second tubular
segments of each of said inside hinge joint connections;
D. an upper guideway groove defined by a spaced pair of parallel,
horizontal flanges depending downwardly from said header rail
means;
E. a plurality of upper guide bearing elements, each of which is
supported on a respective hanger screw member between said guideway
groove flanges;
F. a horizontal sill rail means fixed parallel to and in a
generally vertical coplanar relation to said header rail means,
said sill rail means defining an upwardly oriented lower guideway
groove;
G. a lower guide bearing projection fixed to and extending
downwardly, into said lower guidway groove, from the lower end of
each of said second tubular segments of said inside hinge joint
connections;
H. a vertical element arranged generally parallel to a leading
vertical edge of the folding closure structure;
I. a relatively deep groove extending along the entire height of
said vertical edge;
J. a tongue along the opposed edge of said vertical element,
adapted to nest within said groove when said folding closure
structure is moved to a closed position;
K. lock means for selectively maintaining said folding closure
structure in the closed position including,
1. a latch lever pivotally fulcrumed on a transverse horizontal
axis on said vertical element,
2. a barb portion projecting outwardly of said vertical
element,
3. a transverse, horizontal strike edge defined in said leading
edge, adapted to be lockingly engaged by said barb portion when
said folding closure structure is moved to the closed position,
4. compression spring means to hold said barb portion in said
locked engagement.
2. A folding closure structure as set forth in claim 1 wherein each
lower guide bearing projection includes a lower guide screw having
a threaded distal portion received in the axial opening of said
second tubular segment, and a lower guide bearing fitted on the
shank portion of said lower guide screw within said lower guideway
groove.
3. A folding closure construction as set forth in claim 2 wherein
the lower guide bearings of said series of lower guide projection
means includes axial thrust surface means receiving downward thrust
and weight of said closure panel.
4. A folding closure construction as set forth in claim 1 wherein
said header rail means includes awning flange means extending along
the longitudinal extension of said header rail, projecting
generally horizontally outwardly of said rail and arranged at a
disposition substantially directly over the horizontal upper margin
of said folding closure panel.
5. A folding closure construction as set forth in claim 1 wherein
each joint connection of the series of outside hinge joint
connections of the closure panel is of mating groove and pintle
configuration and includes upper and lower thrust bearing means
operative for preventing relative bidirectional contradirectional
axial displacement of the mating pintle and groove structures of
each outside hinge joint connection.
6. A folding closure structure as set forth in claim 5 wherein an
upper and a lower thrust screw assembly is arranged respectively at
the upper and lower ends of each of said outside hinge joint
connections, each of said upper and lower screw assemblies includes
a screw having a threaded shank portion received within the axial
interior of said second tubular segment and a bearing ring
interposed between a head portion of said screw and one of said
ends.
Description
BACKGROUND OF THE INVENTION
1. Field of the Invention
This invention relates to accordian fold closure panel means
generally and particularly relates to hanger means for suspending
accordian fold panel means and for guidingly constraining the panel
means during opening and closing manipulation.
2. Description of the Prior Art
Heretofore, a typical practice in pendantly supporting an accordian
fold closure panel included a series of hanger projections each
projecting upwardly from the pintle structure of the respective
hinge joint connections connecting adjacent vertical slat elements.
The pintle structure of prior art design generally is of solid
form, and the hanger projections pendantly supporting the closure
from overhead trolly means being integrally formed on the upper
extension of the respective pintle structure. The manufacturing
process in forming each hanger projection on the pintle structure
of a prior art closure slat element is expensive in time and
material and also presents difficulty in installation and
maintenance. The typical folding closure also incorporates rather
ineffective means for guidingly constraining the lower edge margin
of the closure during expanding and contracting folding movement: a
series of guide projections are each integrally formed to the lower
pintle structure of a hinge joint connection and necessitate
expensive manufacture procedure. Moreover, the lower guide
projections in prior art closure fabrication restricted the
flexibility of application of a folding closure and presented
problems in installation and maintenance. The closure lock means of
prior art design also are of substantially complicated
configuration and present problems in manufacture and use; the
complicated design of the typical folding closure lock structure
increases the costs of manufacture, marketing and installation of a
folding closure assembly.
SUMMARY OF THE INVENTION
The instant invention obviates many of the above-mentioned
objectionable features of prior art closure structure and presents
an improved closure construction reducing substantially the cost of
manufacture and installation thereof as compared with prior art
closures. The principal movement in the closure construction of the
instant invention is brought about substantially in the
metal-extruding manufacture of the pintle structure of each pintle
and slot hinge connection of the accordian fold panel; the pintle
structure is extruded in generally slotted tube form. This permits
an upper and a lower screw element to be thread-mounted in the
opposite end portions of the pintle structure and project
oppositely respectively upwardly and downwardly. The upward
arranged screw element may be in the form of a hanger screw element
and connected with overhead trolley means for pendantly supporting
the accordian fold closure; in a similar manner, the lower tubular
interior of a pintle structure may be fitted with a downwardly
projecting guide screw, carrying a guide bearing, runningly
received in grooveway structure in the horizontal sill of a folding
closure installation for guidingly constraining the lower edge
margin of the accordian fold closure. The improved closure
configuration reduces substantially the cost of manufacture and
increases the flexibility of installation and range of use of
accordian fold closure structures incorporating slot and pintle
slat connecting means.
BRIEF DESCRIPTION OF THE DRAWING
FIGS. 1 and 2 illustrate front elevational fragmentary views of the
upper portion of the folding closure construction of the instant
invention;
FIG. 3 is a vertical plane sectional view taken as on the line 3--3
of FIG. 1;
FIG. 4 is a horizontal plane sectional view taken as on the line
4--4 of FIG. 1;
FIG. 5 is a fragmentary perspective view illustrating an upper
thrust bearing means of the invention;
FIGS. 6 and 7 illustrate the lower front portion of the folding
closure construction;
FIG. 8 is a vertical sectional view taken as on the line 8--8 of
FIG. 6 and illustrating a particular configuration of the
horizontal guide sill means of the folding closure;
FIG. 9, similar to FIG. 8, illustrates an embodiment of the folding
closure structure adapted for installation as a curtain wall
closure or the like, and illustrating particularly the guide sill
rail means arranged along the level of a floor of a building (floor
structure being shown in broken lines);
FIG. 10 illustrates another embodiment of the invention
illustrating the folding closure construction as including a pair
of accordian fold closures, and as including lock means for
releasably locking the pair of closures together;
FIG. 11 is a horizontal sectional view of the lock means of the
closure apparatus, taken as on the line 11--11 of FIG. 10; and
FIG. 12 is a vertical plane sectional view taken as on the line
12--12 of FIG. 11.
DESCRIPTION OF THE PREFERRED EMBODIMENTS
The FIGS. 1-8 illustrate one embodiment of the folding closure
construction, indicated 14, and illustrated mounted in a building
wall 16. An accordian fold closure panel 18 is operably mounted in
the building opening by header and sill rail means 20, 22 fixedly
secured in horizontal parallel relation in the upper and lower
margins of the building opening respectively by screw elements 24.
Vertical side jamb members 26 (one shown) secured by screw means
28, may be fitted on opposite sides of the building opening, and
provide vertical stationary element means framing the accordian
fold closure 18 in the installation.
The folding closure 18 includes a plurality of alternatingly
arranged edgewise hinged vertical slat members 30, 32 connected
together by a series of inside hinge joint connections 34 and a
series of outside hinge joint connections 36. The hinge joint
connections 34, 36 each are generally of like form but conversely
configured, for admitting of accordian fold movement of the closure
panel. Each inside hinge joint 34 includes a pintle portion 34'
extending vertically along an edge margin of a slat body 32, and a
groove portion 34" extending along an edge margin of a slat body
30. The slat members 32, 30 preferably are of extruded metal form
and longitudinally uniform. The slat members 30, 32 preferably are
extruded with longitudinally extending reinforcing and ornamental
rib portions 30', 32' extending symmetrically along opposite side
face surfaces respectively of the slat members. The pintle portion
34' of each inside hinge joint 34 is generally of slotted tube form
and defines an axial opening 34a and slot opening 34b extending
coextensive the length of the slat member 32 (see FIG. 4). The
semi-cylindrical exterior surface of the pintle structure 34' of
slat member 32 snugly correspondingly engages the interior
semi-cylindrical surface of groove structure 34" of the slat member
30.
Each outside hinge joint connection 36, corresponds in structure
with each of the inside hinge joint connections 34 and includes a
pintle portion 36' and groove portion 36" integrally formed
respectively with the slat body structure 30b, 32b of the slat
members 30, 32. The pintle portion 36' of each outside hinge joint
connection 36 is likewise of semi-tubular form and defines an axial
opening 36a and slot opening 36b extending coextensive the length
of the respective slat members 30, 32. If desired, the slat members
30, 32 may be provided respectively with louver-like elements 30',
32' struck respectively from the body structure 30b, 32b of the
slat elements 30, 32, and defining vertical series of downwardly
oriented openings 30", 32".
The header rail means 20 is generally of tubular form and
rectangular in cross section, defining a tubular interior 20'. The
header rail 20 preferably is of extruded metal configuration, and
formed with upwardly projecting coplanar upper and lower flange
portions respectively 38, 38'. Screw elements 24 passing through
the upper flange portion 38, threadedly engage the wall 16 and
horizontally support the header rail 20. The lower flange 38'
provides compression foot means for abuttingly engaging the
vertical wall surface 16' and for maintaining the header rail in
horizontal outstanding relation to the wall.
The header rail 20 defines an upwardly oriented longitudinally
extending trackway defining parallel extending dual trackway
surfaces 40, 40 adapted to runningly support wheels 42', 42' of the
folding closure trolley 42. The trolley per se is of substantially
typical design and includes the pair of trolley wheels 42', 42' and
trolley frame structure 42" journalling the trolley wheels in
stationarily spaced configuration.
The hanger means pendantly supporting the folding closure panel
from the trolley means 42 preferably includes a hanger screw 44
having a shank portion 44' threadedly fixed in the upper interior
of the pintle structure 34' of each alternate inside hinge joint
connection 34. Each hanger screw 44 preferably is of a self-tapping
type and with its hardened shank portion 44' received in the upper
interior of the axial opening 34a and fixedly embedded in the
pintle structure 34' of the respective inside hinge joint 34. If
desired, an annular plastic washer 46 may be placed underneath the
screw head portion 44" and ridingly engaged with the upper surface
of the trolley frame 42".
The folding closure construction also preferably includes upper
guide means for guidingly constraining the upper horizontal margin
of the folding closure panel 18 during bidirectional movement and
for maintaining the trolley 42 in a laterally centered disposition
relative to the tubular interior 20' of the header rail 20: The
header rail preferably includes a parallel spaced pair of depending
flange portions 48, 48 defining a confronting pair of guide
surfaces adapted to opposingly engage opposite portions of an upper
guide bearing 50 concentrically supported on a respective hanger
screw 44. The guide bearing 50 preferably is annular in form and is
interposedly supported by the screw 44, between the upper edge of
pintle structure 34' and the underside of the trolley frame 42".
The upper guide bearing 50 may be provided with an upper annular
reinforcing shoulder portion 50'.
Each inside hinge joint 34 preferably is provided at the lower
terminus thereof with a lower guide projection 52 operative in the
upwardly facing grooveway 22' of the sill rail 22 (see FIG. 8). The
series of lower guide projections 52 respectively of the series of
hinge joint connections 34, are received in the lower guideway
groove structure 22', 22' and provides means for guidingly
constraining the lower edge margin of the closure panel in
bidirectional opening and closing movement. Each guide projection
52 preferably includes a sleeve-like guide bearing 52' fixedly
secured to the lower terminus of the pintle structure 34' of each
respective hinge joint connection 34. A self-tapping metal screw
52" extends through the bearing 52' and threadedly engages the
lower extension of the pintle structure 34'; the shank portion of
the screw 52" is threadedly fitted in the lower interior of the
axial opening 34a and clampingly secures the bearing 52' in a
downwardly projecting disposition runningly engaging the opposite
side surfaces 22", 22" of the sill rail structure. The bearing 52'
may be provided with a pair of annular rib portions 52a, 52a,
providing anti-friction means for running engagement with the
groove surfaces 22", 22". Each guide bearing 52' may also be
provided with a hexagon shaped upper portion 52b, adapted for
engagement by a wrench or hand tool; the hexagon portion 52b may
provide for additional leverage means when tightening or loosening
the screw 52" and in assembly or disassembly of the closure
structure.
The folding closure construction 14 (FIGS. 1-8) is adapted to be
installed in a window opening at a disposition elevated above a
floor or ground surface. The sill rail 22 is thus provided with
oppositely projecting longitudinally extending upper and lower
flanges 22a, 22b adapted to lie flush against the wall surface 16'
(shown in broken lines in FIG. 8). The screw elements 24 preferably
extend through the lower flange portion 22b of the sill rail and
below the horizontal ledge 16" of the building opening. The sill
rail 22 preferably includes a horizontal longitudinally extending
face flange portion 22c projecting transversely obliquely outwardly
and downwardly of the rail 22 and extending longitudinally along
the lower margin of the building opening. It will be noted that the
upper surface 52c of each guide bearing 52' engages the bottom edge
surfaces respectively of the pintle and groove structure 34', 34";
the series of bearing surfaces 52c provides axial thrust surface
means receiving the downward thrust and weight of the closure
panel, continuously and during the folding operation of the closure
structure.
An upper bearing 54, and a lower thrust bearing 56 preferably is
arranged at the respective upper and lower end portions of each
outside hinge joint connection 36 and provides means for preventing
relative axial displacement of the pintle structure 36' and groove
structure 36" of each hinge joint connection between adjacent slat
members 30, 32 (see FIGS. 3 and 8). The upper and lower thrust
bearings 54, 56 each are preferably of annular washer form and
operatively engage opposite end edges respectively of the pintle
and slot structure 36', 36". Self-tapping type thrust screw
elements 58, 60 extend respectively through the bearing elements
54, 56 and threadedly engage the pintle structure 36' of each
outside hinge joint 36; the screw shank portions 58', 60' are
received respectively in opposite ends of the axial opening 36a and
are threadedly fixed in the respective upper and lower end portions
of the pintle structure 36' of each outside hinge joint.
The header rail structure 20 preferably is extruded with an awning
flange 62 extending along the horizontal extension of the header
rail and projecting generally horizontally outwardly of said rail
and arranged at a disposition projecting over the horizontal upper
margin of the folding closure. An awning flange extension member
62' preferably is fitted on the upper surface of the flange 62 and
fixedly secured thereto by rivet means 62". The awning flange
extension 62' preferably is provided with a rolled proximal edge
portion 62'a, extending longitudinally along the upper face surface
of the header rail 20 and providing decorative or ornamental means
for enhancing the appearance of the header rail structure. The
accordian fold closure 18 may be laterally anchored in the
installation by a hinge joint connection 34' extending along the
inward vertical margin of side jamb 26 (see FIG. 4). Also, in
certain installations of the closure construction, a vertical
member 64 may be stationarily supported between the header and sill
rails 20, 22 and provide abutment means for the leading slat member
of the closure configuration when it is in an expanded closed
disposition (see FIGS. 2, and 7).
FIG. 9 illustrates a folding closure construction 114 and an
embodiment of the invention of curtain wall accordian fold form.
The folding closure construction 114 includes an accordian fold
closure panel 118 adapted to be operably supported with its lower
horizontal margin being closely spaced above the level of a floor
surface 166a. The folding closure construction 114, corresponds
with the closure construction 14, and differs specifically in
structure only in the configuration of the sill rail means 122:
closure construction 14 includes a plurality of closure slat
members 130, 132; a series of inside hinge joint connections 134; a
series of outside hinge joint connections 136; a lower guide
bearing and screw unit 152', 152"; a lower thrust bearing and screw
assembly 156, 160; and, the remaining structure as specifically
described in the folding closure construction 14. The sill rail
member 122 is adapted for accommodating a split-level or stepped
floor configuration 166a, 166b, 166c and is extruded to form upper
and lower horizontal wall portions 122a, 122b; parallel confronting
wall portions 122', 122' defining the grooveway receiving the
series of lower guide bearings 152'; and includes an oblique face
flange portion 122c. The sill member 122 is stationarily supported,
preferably with its lower wall portion 122b and the distal edge
122c' of the face flange restingly engaging the floor surface 166b
and with the upper wall portion 122a edgewise engaging the vertical
floor surface 166c and lying generally coplanar with the horizontal
floor surface 166a.
The FIGS. 10-12 illustrate another embodiment of the folding
closure construction, indicated 214, and an embodiment particularly
representing the folding closure lock means 268 of the invention.
The closure construction 214 preferably includes a convergingly
divergingly operative pair of accordian fold closure panels 218,
218', arranged respectively leftward and rightward as viewed in the
drawing. The closure panels 218, 218' preferably include
respectively half slat members 270, 270' hingedly connected
respectively to slat members 232, 232' respectively by inside hinge
joint connections 234, 234'. The half slat members 270, 270' are
provided respectively with tongue and groove portions 270a and
270b', extending vertically coplanar and operative for mating
tongue and groove engagement when the closure panels 218, 218' are
in converged expanded configuration, as shown in the drawing. The
half slat members 270, 270' are provided respectively with angle
flange projections 270c, 270d; 270c', 270d', parallel extending and
adapted for mating arrangement when the closure panels are in
closed converged configuration; when the panels 218, 218' are in
closed configuration, the angle flange portions 270c, 270c' are in
flatwise mating engagement, and the angle flange portions 270d,
270d' are in coplanar arrangement (see FIGS. 11 and 12).
The lock means 268, adapted for locking the closure panels 218,
218' includes a lock lever 272 pivotally supported by fulcrum pin
means 274a, 274b supported on the flange projection 270d of the
half slat member 270. The lock lever 272 is pivotally fulcrumed on
a horizontal axis on the vertical half slat element 270 and is
normally in a locked horizontal disposition. The lock lever 272 is
provided with a barbed head portion 272a adapted to extend through
aligned apertures 270e, 270e' formed respectively in the parallel
arranged flange portions 270c, 270c' of the half slat members. The
barb portion 272a of the lock lever defines a transverse lock
surface 272b, adapted to hook over and engage a strike edge portion
270f' of the aperture structure 270e' of the rightward half slat
member 270'. Plunger and spring means 276, 278, fitted coaxially in
aperture structure 272c of the lock lever 272 provides means
yieldably urging the lock lever barb portion 272a clockwise as
viewed in the drawings, and to a latched configuration; the plunger
head portion 276a abuttingly engages continuously the flange
portion 270c and yieldably turns the latch lever to a locked
configuration. A handle projections 272d of the lock lever provides
finger-operative means for manipulating the lock lever to an
unlocked disposition. In convergingly moving the closure panels
218, 218' to closed configuration, the sloping undersurface 272e of
the lever head portion 272a engages the strike edge 270f', lifting
the barbed head over the strike edge and latching the closure
panels together. The folding closure construction 214 may be
arranged in an open disposition by manipulating the lock lever 272
counterclockwise while divergingly moving the pair of closure
panels.
While the instant invention is shown and described in presently
preferred embodiments, it will be understood that various changes
and modifications may be made in the embodiments as described
without departing from the spirit and scope of the invention.
* * * * *