CA2374890C - Corrosion resistant window closure system - Google Patents
Corrosion resistant window closure system Download PDFInfo
- Publication number
- CA2374890C CA2374890C CA002374890A CA2374890A CA2374890C CA 2374890 C CA2374890 C CA 2374890C CA 002374890 A CA002374890 A CA 002374890A CA 2374890 A CA2374890 A CA 2374890A CA 2374890 C CA2374890 C CA 2374890C
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- Canada
- Prior art keywords
- closure member
- window
- metal members
- planar layer
- metal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 230000007797 corrosion Effects 0.000 title claims abstract description 34
- 238000005260 corrosion Methods 0.000 title claims abstract description 34
- 239000002184 metal Substances 0.000 claims abstract description 97
- 229910052751 metal Inorganic materials 0.000 claims abstract description 97
- 229910001220 stainless steel Inorganic materials 0.000 claims description 47
- 239000010935 stainless steel Substances 0.000 claims description 47
- 229910000831 Steel Inorganic materials 0.000 claims description 12
- 239000010959 steel Substances 0.000 claims description 12
- 229910001256 stainless steel alloy Inorganic materials 0.000 claims description 8
- 230000002265 prevention Effects 0.000 claims description 4
- 238000005452 bending Methods 0.000 abstract description 3
- 239000007787 solid Substances 0.000 description 6
- 238000010276 construction Methods 0.000 description 4
- 238000003780 insertion Methods 0.000 description 4
- 230000037431 insertion Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000002028 premature Effects 0.000 description 3
- 239000004677 Nylon Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229920001778 nylon Polymers 0.000 description 2
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 230000001154 acute effect Effects 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000002788 crimping Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 230000000135 prohibitive effect Effects 0.000 description 1
- 239000011253 protective coating Substances 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05D—HINGES OR SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS
- E05D9/00—Flaps or sleeves specially designed for making from particular material, e.g. hoop-iron, sheet metal, plastics
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05D—HINGES OR SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS
- E05D15/00—Suspension arrangements for wings
- E05D15/28—Suspension arrangements for wings supported on arms movable in horizontal plane
- E05D15/30—Suspension arrangements for wings supported on arms movable in horizontal plane with pivoted arms and sliding guides
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05D—HINGES OR SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS
- E05D15/00—Suspension arrangements for wings
- E05D15/06—Suspension arrangements for wings for wings sliding horizontally more or less in their own plane
- E05D15/14—Suspension arrangements for wings for wings sliding horizontally more or less in their own plane with movable arms situated in the plane of the wing
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
- E05Y2900/00—Application of doors, windows, wings or fittings thereof
- E05Y2900/10—Application of doors, windows, wings or fittings thereof for buildings or parts thereof
- E05Y2900/13—Type of wing
- E05Y2900/148—Windows
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Wing Frames And Configurations (AREA)
- Joining Of Corner Units Of Frames Or Wings (AREA)
- Hinges (AREA)
Abstract
A closure member used with a window closure system in securing a window sash to a window frame is characterized by a corrosion resistant elongated rigid rectangular portion or body having two or more juxtaposed corrosion resistant metal sheet layers. The closure member is formed from folding one or more metal sheets having a thickness selected at between about .25 and 2 mm, and more preferably, about .25 and 1 mm, wherein an edge portion of the sheet is bent back against an adjacent portion to form a multi-layered laminate structure. To eliminate potentially dangerous sharp side edges, opposing longitudinal edge portions of the stainless sheet may be folded inwardly against a central portion of the sheet by bending along two longitudinal extending and parallel fold seams. The closure member may be used to secure a window sash to a window as part of a swivel arm, a hinge arm, and/or as part of a reciprocally movable tie bar used to selectively lock or unlock the window sash to the frame. Preferably, the closure member is further characterized by one or more keeper members which engage the metal layers and prevent their movement from a juxtaposed orientation. Suitable keeper members include caming pivot bosses which engage part of each of the outermost metal layers to restrict their movement apart, or depending upon the intended application for the window closure member, the keeper member could alternately comprise one or more locking studs, snap studs, pivot studs or other suitable pivot fasteners.
Description
CORROSION RESISTANT WINDOW CLOSURE SYSTEM
SCOPE OF THE INVENTION
The present invention relates to a window closure system for swingably attaching and locking a casement window to a window frame, and more particularly a corrosion resistant window closure system for use in marine, coastal and other high humidity environments where increased susceptibility to corrosion occurs.
BACKGROUND OF THE INVENTION
Various window hardware systems have been proposed to swingably attach and secure casement windows to a window frame. For example, residential casement windows are typically swingably attached to the window frame by a hinge assembly which is operable by means of a hand crank, and which further includes a hinge arm coupled along the window frame and an elongated L or U-shaped track coupled along a horizontal lower edge of the window sash. The hinge arm is pivotally movable with the window sash, with its other end slidable along the track.
A swivel arm is pivotally joined at each of its ends to the track and a mid point of the hinge arm to assist in the outward and inward movement of the hinge arm.
The window may be locked or unlocked by the reciprocal movement of an elongated tie bar which is slidably mounted along one side of the window frame. The tie bar carries one or more bosses or projections which are moved into or out of engagement with ramped Gaming members mounted on an adjacent portion of the window sash, as for example is disclosed in the applicant's United States Patent No. 6,109,668, issued August 29, 2000.
Conventional hardware used in the attachment of casement windows in window frames suffers the disadvantage in that it is susceptible to premature corrosion, particularly when used in marine, coastal or other high humidity environments. In particular, conventional window hardware swivel arms, hinge arms and tie bars are typically formed from 3 to 4 mm thick solid steel bars. To delay the effects of corrosion and prolong the window hardware life span, it is known to provide corrosive-resistant zinc platings on the swing and hinge arms, and the tie bar assemblies. It has been found, however, that metal-on-metal contact which occurs with window hardware operation tends to scratch away portions of the protective coating and expose the unprotected underlying steel. This problem is particularly acute at the pivot points and where the tie bars move into contact with the ramped Gaming members. As a result, the areas of metal-on-metal contact are susceptible to premature corrosion, especially when the hardware is used in such corrosive environments. In addition to initially creating an unsightly appearance, corrosion will ultimately weaken the hinge and locking mechanisms, leading to corrosion embrittlement and fatigue, and ultimately the failure of the window hardware.
While the applicant has considered forming the window hinge arms, swivel arms, and tie bars from solid 2 to 3 mm thick stainless steel stock, so as to prevent corrosion, the increased difficulties in machining and working with such solid stainless steel bars, and the higher costs associated therewith have heretofore made such modifications cost prohibitive.
SUMMARY OF THE INVENTION
To at least partially overcome the disadvantages of prior art window hardware systems, the present invention provides a window closure assembly used to secure a casement window to a window frame, and which includes an elongated rigid closure member useful as a swivel arm, hinge arm and/or tie bar, which is formed by folding a sheet of stainless steel or a stainless steel alloy into two, three or more substantially overlapping layers.
Another object of the invention is to provide hardware used to swingably secure a window sash to a window frame which is highly resistant to corrosive forces so as to prolong its operational life in marine, coastal and other high humidity environments.
Another object of the invention is to provide a window closure member which is suitable for use as a hinge arm, a swivel arm, a tie bar or other window hardware components and which is characterized by multiple juxtaposed stainless steel or other corrosion resistant sheet layers, which are joined together as an elongated rigid mufti-layer laminate bar.
Another object of the invention is to provide an elongated bar for use as a window hinge swivel arm, hinge arm or a tie bar which is characterized by at least two juxtaposed metal layers, and which further includes at least one keeper member engaging at least a part of the upper and lowermost metal layers of the bar to assist in maintaining their juxtaposed orientation.
Another object of the invention is to provide an economical and easily fabricated corrosion resistant window closure system characterized by a swivel arm, hinge arm or tie bar for use in securing a window sash to a window frame, and which has an elongated portion formed entirely from multiple layers of stainless steel.
A further object of the invention is to provide a stainless steel or stainless steel alloy window closure member which is lightweight, economical to produce and which possesses substantially the same rigidity and strength as conventional window closure hardware made from solid steel bar stock.
The present invention provides a closure member to be used with a window closure system in securing a window sash to a window frame. The closure member is characterized by a corrosion resistant elongated rigid rectangular portion or body. Preferably, the elongated portion or body of the closure member is characterized by two, three or more stainless steel, stainless steel alloy or other corrosion resistant metal sheet layers provided in a juxtaposed and substantially overlapping orientation. Most preferably, the closure member is formed from folding one or more stainless steel sheets having a thickness selected at between about .25 and 2 mm, and more preferably, about .25 and 1 mm, and wherein an edge portion of the sheet is bent back against an adjacent portion to form a mufti-layered laminate structure.
Although not essential, to provide the closure member with an aesthetically pleasing appearance while eliminating potentially dangerous sharp side edges, opposing longitudinal edge portions of the stainless sheet may be folded inwardly against a central portion of the sheet by bending along two longitudinal extending and parallel fold seams. Optionally, the stainless steel sheet may be bent along substantially folded seams which are spaced inwardly from the edges of the sheet, and most preferably fold seams spaced inwardly from the immediately adjacent edge by a distance which is approximately one-quarter of the total width of the sheet. The folded longitudinal edge portions of the sheet are bent so as to substantially directly overly the middle portion of the sheet bordered by the fold seams. As will be described, when so bent, the stainless steel sheet defines two generally planar juxtaposed metal layers, wherein one layer is a split layer which includes a longitudinally extending seam defined by the repositioned edges of the stainless steel sheet, and which extends longitudinally along a medial portion of the body.
The closure member may be used to secure a window sash to a window as part of a swivel arm, a hinge arm, and/or as part of a reciprocally movable tie bar used to selectively lock or unlock the window sash to the frame. Most preferably, the closure member is further characterized by one or more keeper members which engage the metal layers and prevent their movement from a juxtaposed orientation. Suitable keeper members may include without limitation, a Gaming or pivot boss which engages one or part of each of the outermost metal layers, to restrict their movement apart, or depending upon the intended application for the window closure member, the keeper member could alternately comprise one or more of a locking stud, a snap stud, a pivot stud, or other suitable pivot fastener.
Although not essential, the keeper member is preferably positioned within a bore formed through the body so that once positioned, the keeper member engages the split metal layer on each side of any seam.
Accordingly, in one aspect the present invention resides in a hinge assembly for swingably attaching a window sash to a window frame, comprising, a track assembly attachable to the window frame and including an elongated track, an elongated swivel arm pivotally coupled at a first end portion to the track assembly, and an elongated hinge arm extending from a first end to a second end, the first end being slidable along at least a portion of the track, a second other end portion of said swivel arm being pivotally coupled to the hinge arm at a pivot point intermediate said first and second ends, the improvement wherein at least one of said swivel arm and said hinge arm comprises a closure member characterized by a rigid elongated rectangular body portion formed from a folded metal sheet and having at least two substantially juxtaposed metal layers, and wherein said metal layers are joined along at least one integral and longitudinally extending folded edge.
In another aspect, the present invention resides in a corrosion resistant window closure member for use as window hardware to secure a window sash to a window frame, said closure member comprising an elongated rigid rectangular body portion having substantially parallel longitudinally extending edges, said body portion being formed from a stainless steel sheet and characterized by longitudinally extending folded edges, and two juxtaposed generally planer metal layers joined along each longitudinally extending folded edge.
In a further aspect, the present invention resides in a hinge assembly for swingably attaching a window sash to a window frame, comprising, a track assembly attachable to the window frame and including an elongated track, an elongated swivel arm pivotally coupled at a first end portion to the track assembly, an elongated hinge arm extending from a first end to a second end, the first end being slidable along at least a portion of the track, a second other end portion of said swivel arm being pivotally coupled to the hinge arm at a pivot point intermediate said first and second ends, and the improvement wherein at least one of said swivel arm and said hinge arm includes a closure member characterized by a elongated rectangular body portion comprising a plurality of juxtaposed metal layers being integrally and substantially continuously joined along longitudinally extending edges, and wherein said edges are formed from folding a single sheet of metal.
In another aspect, the present invention resides in a corrosion resistant window closure member comprising, an elongated rigid rectangular body portion having substantially parallel longitudinally extending edges, said body portion comprising a single, continuous, stainless steel sheet having a first generally planar layer and two juxtaposed generally planar metal members, each of said metal members extending from a respective one of said longitudinally extending edges and being in substantial abutting contact with said planar layer between said edge and an end portion thereof, a bore extending through the planar layer between the metal members, a keeper positioned in the bore and engaging a portion of each of the metal members and substantially preventing the metal members from moving out of abutting contact with the planar layer, the closure member being mounted to one of a window sash and a window frame for selective movement to engage the other of the window sash and window frame for preventing movement of the window sash relative to the window frame.
In yet a further aspect, the present invention resides in a corrosion resistant window closure member comprising, an elongated generally rectangular body having substantially parallel longitudinally extending edges, the body comprising a single, continuous, steel sheet having a first generally planar layer and two juxtaposed substantially planar metal members, each of said metal members extending from a respective one of said longitudinally extending edges and being in substantial abutting contact with said planar layer between said edge and an end portion thereof, said steel sheet comprising one of a stainless steel and a stainless steel alloy, a bore extending through the planar layer between the metal members, a keeper positioned in the bore and engaging a portion of each of the metal members and substantially preventing the metal members from moving out of abutting contact with the planar layer, the closure member being mounted to one of a window sash and a window frame for selective movement to engage the other of the window sash and window frame for prevention movement of the window sash relative to the window from.
6a In another aspect, the present invention resides in a corrosion resistant window closure member comprising, an elongated rigid rectangular body portion having substantially parallel longitudinally extending edges, said body portion comprising a single, continuous, corrosion resistant metal sheet having a first generally planar layer and two juxtaposed generally planar metal members, each of said metal members extending from a respective one of said longitudinally extending edges and being in substantial abutting contact with said planar layer between said edge and an end portion thereof, a bore extending through the planar layer between the metal members, b. a keeper positioned in the bore and engaging a portion of each of the metal members and substantially preventing the metal members from moving out of abutting contact with the planar layer, the closure member being mountable to one of a window sash and a window frame for selective movement to engage the other of the window sash and window frame for preventing movement of the window sash relative to the window frame.
In yet another aspect, the present invention resides in a corrosion resistant window closure member comprising, an elongated generally rectangular body having substantially parallel longitudinally extending edges, the body comprising a single, continuous, metal sheet having a first generally planar layer and at least one juxtaposed substantially planar metal member extending from an associated one of said longitudinally extending edges and being in substantial abutting contact with said planar layer between said edge and an end portion thereof, a bore extending through the planar layer at least partially through the at least one metal member, 6b the closure member being mountable to one of a window sash and a window frame for selective movement to engage the other of the window sash and window frame for prevention movement of the window sash relative to the window from.
BRIEF DESCRIPTION OF THE DRAWINGS
Reference may now be had to the accompanying detailed description taken together with the accompanying drawings which:
Figure 1 shows a perspective view of a casement window incorporating the window closure hardware in accordance with the present invention;
Figure 2 shows a partial perspective view of the window hinge assembly in accordance with the present invention taken along line 2-2 with the window moved to a partially open position;
Figure 3 shows a cross-sectional view of the hinge arm shown in Figure 2, taken along lines 3-3';
Figure 4 illustrates an enlarged perspective view of a stainless steel sheet blank used in the manufacture of the closure bar used in the hinge arm assembly of Figure 3;
Figure 5 shows an enlarged cross-sectional view of the hinge arm assembly and stop stud shown in Figure 2 taken along lines 5-5';
Figure 6 illustrates an enlarged cross-sectional view of the hinge arm assembly, the swivel arm assembly and the connecting pivot stud shown in Figure 2 taken along lines 6-6';
Figure 7 illustrates schematically a side view of the multi-point locking assembly used to lock the casement window of Figure 1; and Figure 8 illustrates a schematic view of the tie bar used in the multi-point locking assembly of Figure 7.
DETAILED DESCRIPTION OF THE DRAWINGS
Reference is now made to Figure 1 which illustrates a casement window unit 10 which includes a window which consists of a casement window sash 12 and glass pane 14, and a surrounding window frame 16 which comprises a pair of vertical frame members 18a, 18b joined at their upper and lower ends by parallel horizontal frame members 20a,20b. As will be described, the window sash 12 is swingably attached and locked to the window frame 16 by a corrosion resistant window closure system which includes a window track and hinge assembly 28 and a mufti-point locking assembly 30.
Figure 2 illustrates best the track and hinge assembly 28 as being used to swingably attach the window sash 12 to the window frame 16. The track and hinge assembly 28 comprises an elongated stainless steel track 34, a swivel arm 36, and an elongated hinge arm 38, one end of which is slidable along the track 34 in its direction of 34 elongation by means of a nylon shoe or slider 40. Figure 2 shows best the track 34 as being secured to the bottom horizontal frame member 20a by a series of spaced screws 42. The track 34 further includes an upwardly extending rearward wall 44 which curves forwardly and downwardly along at its uppermost edge to define a downwardly U-shaped open channel 46. As is known, the slider 40 is partially retained in the open channel 46 of the track 34, and has a profile selected to permit its sliding movement longitudinally along the track 34 the length of the channel 46.
Figure 2 shows best the hinge arm 38 as consisting of a generally elongated stainless steel closure bar 50. The bar SO has an overall width and length corresponding to that of a conventional solid steel hinge arm and a thickness of between about 1.5 to 3 mm. A series of through bores 72,74a,74b,74c,76,78 are formed through the lateral center of the bar 50. As shown best in Figure 2, the hinge arm 38 is secured to a lower edge window sash 12 by the insertion of screws 82 through the bores 74a,74b,74c, so as to effect movement of the sash 12 therewith. A first end of the hinge arm 38 is pivotally coupled to the slider 40 for sliding movement along the track 34 by the insertion of a pivot stud 84 through the bore 72 and an aligned bore (not shown) formed through the slider 40.
Figure 3 shows best a cross-sectional view of the hinge arm closure bar SO as having two-layer construction consisting of an upper stainless steel layer 92 which directly overlies a lower stainless steel layer 94. The upper stainless steel layer 92 extends continuously across and along the length of the bar 50, so as to shed any moisture which may otherwise collect thereon, and provide the bar 50 with an otherwise solid appearance. The lower stainless steel layer 94 consists of two halves 96a,96b separated by a seam 98 which extends longitudinally along the underside of the lateral middle of the bar 50. Each half 96a,96b is integral with the upper stainless steel layer 94 as a single continuous sheet along a respective longitudinal fold edge 1 OOa, l 00b.
Figure 4 shows best the closure bar 50 as being formed from folding a rectangular stainless steel sheet 110 which has a thickness selected at between about .25 and 1 mm. As seen best in Figure 4, the metal layers 92,94 of the bar 50 are provided in overlying juxtaposition by folding longitudinal edge portions halves (96a,96b) of the metal sheet 110 in the direction of arrows 112a,112b along parallel fold seams 114a,114b, so as to overly the middle portion of the sheet (layer 94). The fold seams 114a,114b are located a distance inwardly from each respective proximate longitudinal sheet edge 116a,116b, selected approximately one-quarter of the overall lateral width W of the unfolded sheet 110. The longitudinal edges 116a,116b of the sheet 110 are moved adjacent to each other so as to define the sides of the longitudinally extending seam line 98, with the seam line extending along the longitudinal center of the bottom metal layer 94 and with the upper 92 and lower layers 94 being integrally joined along each longitudinal edge 100a, 100b. It is to be appreciated that the formation of the closure bar 50 with integral folded edges 100a,100b advantageously ensures that the hinge arm 36 is provided with a rounded edge surface which does not present sharp edges which could otherwise cut a user.
Figure 5 further shows the hinge arm 38 as including a stainless steel stop boss 120. The stop boss 120 is secured within the aperture 76 formed through the closure bar 50. As shown, the boss 120 includes a generally cylindrical body portion 122 which has a radial diameter selected to fit snuggly within the aperture 76, and enlarged upper and lower flanges 124,126. As can be seen, the lower flange 124 has a radial dimension selected so as to overly portions of each part 96a,96b of the bottom metal layer 94 on each side of the seam line (not shown). The upper flange 126 similarly has a radial diameter longer than the bore 76, so as to overly a portion of the upper metal layer 94 adjacent the aperture 76. It is to be appreciated that the flanges 124 and/or 126 may easily be formed by a conventional stamping press or ram. The configuration and radial spread of the stop boss flanges 124,126 effectively sandwich together the portion of the layers 92,94 adjacent the aperture 76, effectively locking the layers 92,94 in juxtaposed contact, and preventing either part 96a,96b of the lower layer 94 from moving away from the upper layer 92 upon the application of loading stresses to the hinge arm 38.
The swivel arm 36 includes an elongated stainless steel closure bar 70 which has the identical construction as closure bar 50, and wherein like reference numerals are used to identify like components. The arm 36 further includes two through bores or apertures 52,54 (Figure 6) formed through the middle of the bar 70 towards each of its ends, and wherein aperture 54 has essentially the same diameter as the bore or aperture 78 formed through the closure bar 50. A
stainless steel releasable locking stud 48, such as that disclosed in the inventor's United States Patent No. 5,920,959, which issued July 13, 1999, is fixedly secured towards an end of the track 34 remote from the wall 44 and channel 46. The aperture 52 is formed with a diameter marginally greater than the diameter of the snap stud 48, so as to permit the insertion of the snap stud 48 therethrough, to pivotally connect our end of the swivel arm 36 to the track 34.
Although not essential, the pivot connection between the swivel arm 36 and track 34 most preferably permits for minor adjustment in the positioning of the snap stud 48. The adjustment mechanism may for example include an adjustable pivot post or an adjustable sleeve used to engage the snap stud, as for example is disclosed in United States Patent no. 5,152,102 to LaSee which issued October 6, 1992.
As will be described, the second other end of the swivel arm 36 is pivotally secured to the hinge arm 38 by the insertion of a stainless steel pivot stud 66 through the apertures 54 and 78.
More particularly, the swivel arm 36 is pivotally coupled to a mid-portion of the closure bar 70 by aligning the bores 54,78 and thereafter inserting the pivot stud 66 through the aligned openings and crimping it to permanently hingedly couple the swivel arm 36 to the hinge arm 38.
Figure 6 illustrates an enlarged cross-sectional view of the pivot stud 66 used in the hinged coupling of the end of the swivel arm 36 to the medial portion of the hinge arm 38. The pivot stud 66 includes a cylindrical hollow body 136 having a radial diameter D
which is selected marginally less than that of the apertures 54 and 78, and one or more crimped ends which define upper and lower radially extending flanges 138,140. In assembly, the aperture 54 of the swivel arm 36 is initially aligned with the aperture 78 of the hinge arm 38. The pivot stud 66 is inserted through the aligned apertures 54,78 and thereafter crimped to form the enlarged upper and lower flanges 138,140. The lower flange 140 of the stud 66 engages the lower metal layer of the swivel arm 36 with the upper flange 138 overlying and engaging the upper metal layer of the hinge arm 38 to hingely couple the arms 36,38 together. As with the stop boss 120, the flanges 138,140 have a radial diameter selected larger than that of the apertures 54,78 so as to overly a portion of the top layer 92 of the hinge arm, and the bottom layer 94 of the swivel arm 36. This construction effectively sandwiches together the layers 92,94 of the hinge arm 38, with the layers 92,94 of the swivel arm 36 to effectively prevent their movement from a juxtaposed orientation.
Although Figures 1 to 5 illustrate the swivel arm 36 and hinge arm 38 as incorporating stainless steel closure bars 50,70, it is to be appreciated that closure bars having the identical profile to that shown in Figure 3 may also be used in the manufacture of other components of the window closure system, including the locking assembly 30. Figures 7 illustrates best the multi-point locking assembly 30 used to secure or lock the window sash 12 closed against the window frame 16. The locking assembly 30 consists of at least two vertically spaced ramp members 1 SOa, l SOb which in assembly are secured to the sash 12, a tie bar assembly 152, and an actuating handle 154 which are mounted to the vertical frame member 18a (Figure 1 ). As will be described, the actuating handle 154 is reciprocally movable about a pivot 156 to selectively raise or lower the tie bar assembly 152 into and out of engagement with the ramp members 150a,150b to lock or unlock the window sash 12.
The tie bar assembly 152 includes a closure or tie bar 160, a pair of vertically spaced mounting brackets 162a,162b used to vertically and slidably secure the tie bar 160 to the vertical frame member 18a and a pair of nylon Gaming rollers 164a,164b each rotatably mounted about a stainless steel bearing stud 166. The tie bar 160 is formed from a folded stainless steel sheet and has a substantially cross-sectional identical profile as that of the closure bars 50,70 as is shown in Figure 3. The brackets 162a,162b are preferably also formed from stainless steel so as to minimize the likelihood of corrosion in the event of metal-on-metal contact with the tie bar 160.
As shown best in Figure 7, the lowermost end of the tie bar 160 is coupled to the handle 154 by a linkage arm 170 which is joined to the tie bar 160 at a first end by means of a releasable pivot stud 168, and which is engaged at its second other end by a Gaming pin 170 mounted to the handle 154.
The bearing studs 166 are inserted through bores 174a,174b (Figure 8) which are formed through the tie bar 160. The bearing studs 166 are thereafter crimped or stamped to provide enlarged upper and lower flanges which overly the adjacent portions of the metal layers which form the tie bar 160 in essentially the identical manner as the upwardly flanges 122,124 which overly the layers 92,94 of the bar SO shown in Figure 5.
The movement of the handle 154 effects sliding movement of the tie bar 160 downwardly to achieve unlocking of the window sash 12 whereby the rollers 164a,164b are lowered out of engagement with the ramp members 150a,150b. When the window sash 16 is fully closed, the rotation of the handle 154 downwardly may thus be used to raise the tie bar 160 and return the rollers 164a,164b into engaging contact with the ramp members 1 SOa, l SOb to lock the window sash 12 as the rollers 164a,164b are moved thereagainst.
Optionally, the rollers 164a,164b may be formed from stainless steel as either a freely rotatable bushing, or integrally formed as part of each stainless steel stud 166.
It is to be appreciated that because of their stainless steel composition, the closure bars 50,70 of the present invention provide enhanced corrosion resistance, making the window hardware particularly suited for use in high humidity applications, such as coastal and marine environments. Furthermore, for increased longevity, more preferably each of the stop studs, bosses 120 and pivots 66 are also formed from stainless steel and/or stainless steel alloys, thereby providing a minimum number of window hardware parts which may otherwise be susceptible to premature corrosion.
By forming the exterior mounted tie bar assembly 152 entirely out of non-corroding materials, the window locking assembly 30 closure hardware will possess increased corrosion resistance and exhibit enhanced life span.
Although the preferred embodiment of the invention illustrates the hinge arm closure bar 50 and tie bar 160 as being manufactured from a stainless steel sheet so as to have two overlapping metal layers 92,94 so that the invention is not so limited. It is to be appreciated that if desired, the tie bar 160 and closure bars 50, 70 could be formed with three, four or more overlapping stainless steel layers as for example by bending a stainless steel sheet into an S
pattern or the like. Similarly, in a less preferred embodiment, the closure bars 50,70 and tie bar 160 could be formed simply by laminating a series of separate thin stainless steel sheets, and securing the sheets with rivets or other suitable fasteners.
Alternately in a more simplified construction the closure bars 50, 70 could be formed folding a single metal sheet about only one edge in a flattened C-shape.
Although the detailed description describes and illustrates various preferred embodiments, the invention is not limited. Many modifications and variations will now occur to persons skilled in the art. For a definition of the invention, reference may be had to the appended claims.
SCOPE OF THE INVENTION
The present invention relates to a window closure system for swingably attaching and locking a casement window to a window frame, and more particularly a corrosion resistant window closure system for use in marine, coastal and other high humidity environments where increased susceptibility to corrosion occurs.
BACKGROUND OF THE INVENTION
Various window hardware systems have been proposed to swingably attach and secure casement windows to a window frame. For example, residential casement windows are typically swingably attached to the window frame by a hinge assembly which is operable by means of a hand crank, and which further includes a hinge arm coupled along the window frame and an elongated L or U-shaped track coupled along a horizontal lower edge of the window sash. The hinge arm is pivotally movable with the window sash, with its other end slidable along the track.
A swivel arm is pivotally joined at each of its ends to the track and a mid point of the hinge arm to assist in the outward and inward movement of the hinge arm.
The window may be locked or unlocked by the reciprocal movement of an elongated tie bar which is slidably mounted along one side of the window frame. The tie bar carries one or more bosses or projections which are moved into or out of engagement with ramped Gaming members mounted on an adjacent portion of the window sash, as for example is disclosed in the applicant's United States Patent No. 6,109,668, issued August 29, 2000.
Conventional hardware used in the attachment of casement windows in window frames suffers the disadvantage in that it is susceptible to premature corrosion, particularly when used in marine, coastal or other high humidity environments. In particular, conventional window hardware swivel arms, hinge arms and tie bars are typically formed from 3 to 4 mm thick solid steel bars. To delay the effects of corrosion and prolong the window hardware life span, it is known to provide corrosive-resistant zinc platings on the swing and hinge arms, and the tie bar assemblies. It has been found, however, that metal-on-metal contact which occurs with window hardware operation tends to scratch away portions of the protective coating and expose the unprotected underlying steel. This problem is particularly acute at the pivot points and where the tie bars move into contact with the ramped Gaming members. As a result, the areas of metal-on-metal contact are susceptible to premature corrosion, especially when the hardware is used in such corrosive environments. In addition to initially creating an unsightly appearance, corrosion will ultimately weaken the hinge and locking mechanisms, leading to corrosion embrittlement and fatigue, and ultimately the failure of the window hardware.
While the applicant has considered forming the window hinge arms, swivel arms, and tie bars from solid 2 to 3 mm thick stainless steel stock, so as to prevent corrosion, the increased difficulties in machining and working with such solid stainless steel bars, and the higher costs associated therewith have heretofore made such modifications cost prohibitive.
SUMMARY OF THE INVENTION
To at least partially overcome the disadvantages of prior art window hardware systems, the present invention provides a window closure assembly used to secure a casement window to a window frame, and which includes an elongated rigid closure member useful as a swivel arm, hinge arm and/or tie bar, which is formed by folding a sheet of stainless steel or a stainless steel alloy into two, three or more substantially overlapping layers.
Another object of the invention is to provide hardware used to swingably secure a window sash to a window frame which is highly resistant to corrosive forces so as to prolong its operational life in marine, coastal and other high humidity environments.
Another object of the invention is to provide a window closure member which is suitable for use as a hinge arm, a swivel arm, a tie bar or other window hardware components and which is characterized by multiple juxtaposed stainless steel or other corrosion resistant sheet layers, which are joined together as an elongated rigid mufti-layer laminate bar.
Another object of the invention is to provide an elongated bar for use as a window hinge swivel arm, hinge arm or a tie bar which is characterized by at least two juxtaposed metal layers, and which further includes at least one keeper member engaging at least a part of the upper and lowermost metal layers of the bar to assist in maintaining their juxtaposed orientation.
Another object of the invention is to provide an economical and easily fabricated corrosion resistant window closure system characterized by a swivel arm, hinge arm or tie bar for use in securing a window sash to a window frame, and which has an elongated portion formed entirely from multiple layers of stainless steel.
A further object of the invention is to provide a stainless steel or stainless steel alloy window closure member which is lightweight, economical to produce and which possesses substantially the same rigidity and strength as conventional window closure hardware made from solid steel bar stock.
The present invention provides a closure member to be used with a window closure system in securing a window sash to a window frame. The closure member is characterized by a corrosion resistant elongated rigid rectangular portion or body. Preferably, the elongated portion or body of the closure member is characterized by two, three or more stainless steel, stainless steel alloy or other corrosion resistant metal sheet layers provided in a juxtaposed and substantially overlapping orientation. Most preferably, the closure member is formed from folding one or more stainless steel sheets having a thickness selected at between about .25 and 2 mm, and more preferably, about .25 and 1 mm, and wherein an edge portion of the sheet is bent back against an adjacent portion to form a mufti-layered laminate structure.
Although not essential, to provide the closure member with an aesthetically pleasing appearance while eliminating potentially dangerous sharp side edges, opposing longitudinal edge portions of the stainless sheet may be folded inwardly against a central portion of the sheet by bending along two longitudinal extending and parallel fold seams. Optionally, the stainless steel sheet may be bent along substantially folded seams which are spaced inwardly from the edges of the sheet, and most preferably fold seams spaced inwardly from the immediately adjacent edge by a distance which is approximately one-quarter of the total width of the sheet. The folded longitudinal edge portions of the sheet are bent so as to substantially directly overly the middle portion of the sheet bordered by the fold seams. As will be described, when so bent, the stainless steel sheet defines two generally planar juxtaposed metal layers, wherein one layer is a split layer which includes a longitudinally extending seam defined by the repositioned edges of the stainless steel sheet, and which extends longitudinally along a medial portion of the body.
The closure member may be used to secure a window sash to a window as part of a swivel arm, a hinge arm, and/or as part of a reciprocally movable tie bar used to selectively lock or unlock the window sash to the frame. Most preferably, the closure member is further characterized by one or more keeper members which engage the metal layers and prevent their movement from a juxtaposed orientation. Suitable keeper members may include without limitation, a Gaming or pivot boss which engages one or part of each of the outermost metal layers, to restrict their movement apart, or depending upon the intended application for the window closure member, the keeper member could alternately comprise one or more of a locking stud, a snap stud, a pivot stud, or other suitable pivot fastener.
Although not essential, the keeper member is preferably positioned within a bore formed through the body so that once positioned, the keeper member engages the split metal layer on each side of any seam.
Accordingly, in one aspect the present invention resides in a hinge assembly for swingably attaching a window sash to a window frame, comprising, a track assembly attachable to the window frame and including an elongated track, an elongated swivel arm pivotally coupled at a first end portion to the track assembly, and an elongated hinge arm extending from a first end to a second end, the first end being slidable along at least a portion of the track, a second other end portion of said swivel arm being pivotally coupled to the hinge arm at a pivot point intermediate said first and second ends, the improvement wherein at least one of said swivel arm and said hinge arm comprises a closure member characterized by a rigid elongated rectangular body portion formed from a folded metal sheet and having at least two substantially juxtaposed metal layers, and wherein said metal layers are joined along at least one integral and longitudinally extending folded edge.
In another aspect, the present invention resides in a corrosion resistant window closure member for use as window hardware to secure a window sash to a window frame, said closure member comprising an elongated rigid rectangular body portion having substantially parallel longitudinally extending edges, said body portion being formed from a stainless steel sheet and characterized by longitudinally extending folded edges, and two juxtaposed generally planer metal layers joined along each longitudinally extending folded edge.
In a further aspect, the present invention resides in a hinge assembly for swingably attaching a window sash to a window frame, comprising, a track assembly attachable to the window frame and including an elongated track, an elongated swivel arm pivotally coupled at a first end portion to the track assembly, an elongated hinge arm extending from a first end to a second end, the first end being slidable along at least a portion of the track, a second other end portion of said swivel arm being pivotally coupled to the hinge arm at a pivot point intermediate said first and second ends, and the improvement wherein at least one of said swivel arm and said hinge arm includes a closure member characterized by a elongated rectangular body portion comprising a plurality of juxtaposed metal layers being integrally and substantially continuously joined along longitudinally extending edges, and wherein said edges are formed from folding a single sheet of metal.
In another aspect, the present invention resides in a corrosion resistant window closure member comprising, an elongated rigid rectangular body portion having substantially parallel longitudinally extending edges, said body portion comprising a single, continuous, stainless steel sheet having a first generally planar layer and two juxtaposed generally planar metal members, each of said metal members extending from a respective one of said longitudinally extending edges and being in substantial abutting contact with said planar layer between said edge and an end portion thereof, a bore extending through the planar layer between the metal members, a keeper positioned in the bore and engaging a portion of each of the metal members and substantially preventing the metal members from moving out of abutting contact with the planar layer, the closure member being mounted to one of a window sash and a window frame for selective movement to engage the other of the window sash and window frame for preventing movement of the window sash relative to the window frame.
In yet a further aspect, the present invention resides in a corrosion resistant window closure member comprising, an elongated generally rectangular body having substantially parallel longitudinally extending edges, the body comprising a single, continuous, steel sheet having a first generally planar layer and two juxtaposed substantially planar metal members, each of said metal members extending from a respective one of said longitudinally extending edges and being in substantial abutting contact with said planar layer between said edge and an end portion thereof, said steel sheet comprising one of a stainless steel and a stainless steel alloy, a bore extending through the planar layer between the metal members, a keeper positioned in the bore and engaging a portion of each of the metal members and substantially preventing the metal members from moving out of abutting contact with the planar layer, the closure member being mounted to one of a window sash and a window frame for selective movement to engage the other of the window sash and window frame for prevention movement of the window sash relative to the window from.
6a In another aspect, the present invention resides in a corrosion resistant window closure member comprising, an elongated rigid rectangular body portion having substantially parallel longitudinally extending edges, said body portion comprising a single, continuous, corrosion resistant metal sheet having a first generally planar layer and two juxtaposed generally planar metal members, each of said metal members extending from a respective one of said longitudinally extending edges and being in substantial abutting contact with said planar layer between said edge and an end portion thereof, a bore extending through the planar layer between the metal members, b. a keeper positioned in the bore and engaging a portion of each of the metal members and substantially preventing the metal members from moving out of abutting contact with the planar layer, the closure member being mountable to one of a window sash and a window frame for selective movement to engage the other of the window sash and window frame for preventing movement of the window sash relative to the window frame.
In yet another aspect, the present invention resides in a corrosion resistant window closure member comprising, an elongated generally rectangular body having substantially parallel longitudinally extending edges, the body comprising a single, continuous, metal sheet having a first generally planar layer and at least one juxtaposed substantially planar metal member extending from an associated one of said longitudinally extending edges and being in substantial abutting contact with said planar layer between said edge and an end portion thereof, a bore extending through the planar layer at least partially through the at least one metal member, 6b the closure member being mountable to one of a window sash and a window frame for selective movement to engage the other of the window sash and window frame for prevention movement of the window sash relative to the window from.
BRIEF DESCRIPTION OF THE DRAWINGS
Reference may now be had to the accompanying detailed description taken together with the accompanying drawings which:
Figure 1 shows a perspective view of a casement window incorporating the window closure hardware in accordance with the present invention;
Figure 2 shows a partial perspective view of the window hinge assembly in accordance with the present invention taken along line 2-2 with the window moved to a partially open position;
Figure 3 shows a cross-sectional view of the hinge arm shown in Figure 2, taken along lines 3-3';
Figure 4 illustrates an enlarged perspective view of a stainless steel sheet blank used in the manufacture of the closure bar used in the hinge arm assembly of Figure 3;
Figure 5 shows an enlarged cross-sectional view of the hinge arm assembly and stop stud shown in Figure 2 taken along lines 5-5';
Figure 6 illustrates an enlarged cross-sectional view of the hinge arm assembly, the swivel arm assembly and the connecting pivot stud shown in Figure 2 taken along lines 6-6';
Figure 7 illustrates schematically a side view of the multi-point locking assembly used to lock the casement window of Figure 1; and Figure 8 illustrates a schematic view of the tie bar used in the multi-point locking assembly of Figure 7.
DETAILED DESCRIPTION OF THE DRAWINGS
Reference is now made to Figure 1 which illustrates a casement window unit 10 which includes a window which consists of a casement window sash 12 and glass pane 14, and a surrounding window frame 16 which comprises a pair of vertical frame members 18a, 18b joined at their upper and lower ends by parallel horizontal frame members 20a,20b. As will be described, the window sash 12 is swingably attached and locked to the window frame 16 by a corrosion resistant window closure system which includes a window track and hinge assembly 28 and a mufti-point locking assembly 30.
Figure 2 illustrates best the track and hinge assembly 28 as being used to swingably attach the window sash 12 to the window frame 16. The track and hinge assembly 28 comprises an elongated stainless steel track 34, a swivel arm 36, and an elongated hinge arm 38, one end of which is slidable along the track 34 in its direction of 34 elongation by means of a nylon shoe or slider 40. Figure 2 shows best the track 34 as being secured to the bottom horizontal frame member 20a by a series of spaced screws 42. The track 34 further includes an upwardly extending rearward wall 44 which curves forwardly and downwardly along at its uppermost edge to define a downwardly U-shaped open channel 46. As is known, the slider 40 is partially retained in the open channel 46 of the track 34, and has a profile selected to permit its sliding movement longitudinally along the track 34 the length of the channel 46.
Figure 2 shows best the hinge arm 38 as consisting of a generally elongated stainless steel closure bar 50. The bar SO has an overall width and length corresponding to that of a conventional solid steel hinge arm and a thickness of between about 1.5 to 3 mm. A series of through bores 72,74a,74b,74c,76,78 are formed through the lateral center of the bar 50. As shown best in Figure 2, the hinge arm 38 is secured to a lower edge window sash 12 by the insertion of screws 82 through the bores 74a,74b,74c, so as to effect movement of the sash 12 therewith. A first end of the hinge arm 38 is pivotally coupled to the slider 40 for sliding movement along the track 34 by the insertion of a pivot stud 84 through the bore 72 and an aligned bore (not shown) formed through the slider 40.
Figure 3 shows best a cross-sectional view of the hinge arm closure bar SO as having two-layer construction consisting of an upper stainless steel layer 92 which directly overlies a lower stainless steel layer 94. The upper stainless steel layer 92 extends continuously across and along the length of the bar 50, so as to shed any moisture which may otherwise collect thereon, and provide the bar 50 with an otherwise solid appearance. The lower stainless steel layer 94 consists of two halves 96a,96b separated by a seam 98 which extends longitudinally along the underside of the lateral middle of the bar 50. Each half 96a,96b is integral with the upper stainless steel layer 94 as a single continuous sheet along a respective longitudinal fold edge 1 OOa, l 00b.
Figure 4 shows best the closure bar 50 as being formed from folding a rectangular stainless steel sheet 110 which has a thickness selected at between about .25 and 1 mm. As seen best in Figure 4, the metal layers 92,94 of the bar 50 are provided in overlying juxtaposition by folding longitudinal edge portions halves (96a,96b) of the metal sheet 110 in the direction of arrows 112a,112b along parallel fold seams 114a,114b, so as to overly the middle portion of the sheet (layer 94). The fold seams 114a,114b are located a distance inwardly from each respective proximate longitudinal sheet edge 116a,116b, selected approximately one-quarter of the overall lateral width W of the unfolded sheet 110. The longitudinal edges 116a,116b of the sheet 110 are moved adjacent to each other so as to define the sides of the longitudinally extending seam line 98, with the seam line extending along the longitudinal center of the bottom metal layer 94 and with the upper 92 and lower layers 94 being integrally joined along each longitudinal edge 100a, 100b. It is to be appreciated that the formation of the closure bar 50 with integral folded edges 100a,100b advantageously ensures that the hinge arm 36 is provided with a rounded edge surface which does not present sharp edges which could otherwise cut a user.
Figure 5 further shows the hinge arm 38 as including a stainless steel stop boss 120. The stop boss 120 is secured within the aperture 76 formed through the closure bar 50. As shown, the boss 120 includes a generally cylindrical body portion 122 which has a radial diameter selected to fit snuggly within the aperture 76, and enlarged upper and lower flanges 124,126. As can be seen, the lower flange 124 has a radial dimension selected so as to overly portions of each part 96a,96b of the bottom metal layer 94 on each side of the seam line (not shown). The upper flange 126 similarly has a radial diameter longer than the bore 76, so as to overly a portion of the upper metal layer 94 adjacent the aperture 76. It is to be appreciated that the flanges 124 and/or 126 may easily be formed by a conventional stamping press or ram. The configuration and radial spread of the stop boss flanges 124,126 effectively sandwich together the portion of the layers 92,94 adjacent the aperture 76, effectively locking the layers 92,94 in juxtaposed contact, and preventing either part 96a,96b of the lower layer 94 from moving away from the upper layer 92 upon the application of loading stresses to the hinge arm 38.
The swivel arm 36 includes an elongated stainless steel closure bar 70 which has the identical construction as closure bar 50, and wherein like reference numerals are used to identify like components. The arm 36 further includes two through bores or apertures 52,54 (Figure 6) formed through the middle of the bar 70 towards each of its ends, and wherein aperture 54 has essentially the same diameter as the bore or aperture 78 formed through the closure bar 50. A
stainless steel releasable locking stud 48, such as that disclosed in the inventor's United States Patent No. 5,920,959, which issued July 13, 1999, is fixedly secured towards an end of the track 34 remote from the wall 44 and channel 46. The aperture 52 is formed with a diameter marginally greater than the diameter of the snap stud 48, so as to permit the insertion of the snap stud 48 therethrough, to pivotally connect our end of the swivel arm 36 to the track 34.
Although not essential, the pivot connection between the swivel arm 36 and track 34 most preferably permits for minor adjustment in the positioning of the snap stud 48. The adjustment mechanism may for example include an adjustable pivot post or an adjustable sleeve used to engage the snap stud, as for example is disclosed in United States Patent no. 5,152,102 to LaSee which issued October 6, 1992.
As will be described, the second other end of the swivel arm 36 is pivotally secured to the hinge arm 38 by the insertion of a stainless steel pivot stud 66 through the apertures 54 and 78.
More particularly, the swivel arm 36 is pivotally coupled to a mid-portion of the closure bar 70 by aligning the bores 54,78 and thereafter inserting the pivot stud 66 through the aligned openings and crimping it to permanently hingedly couple the swivel arm 36 to the hinge arm 38.
Figure 6 illustrates an enlarged cross-sectional view of the pivot stud 66 used in the hinged coupling of the end of the swivel arm 36 to the medial portion of the hinge arm 38. The pivot stud 66 includes a cylindrical hollow body 136 having a radial diameter D
which is selected marginally less than that of the apertures 54 and 78, and one or more crimped ends which define upper and lower radially extending flanges 138,140. In assembly, the aperture 54 of the swivel arm 36 is initially aligned with the aperture 78 of the hinge arm 38. The pivot stud 66 is inserted through the aligned apertures 54,78 and thereafter crimped to form the enlarged upper and lower flanges 138,140. The lower flange 140 of the stud 66 engages the lower metal layer of the swivel arm 36 with the upper flange 138 overlying and engaging the upper metal layer of the hinge arm 38 to hingely couple the arms 36,38 together. As with the stop boss 120, the flanges 138,140 have a radial diameter selected larger than that of the apertures 54,78 so as to overly a portion of the top layer 92 of the hinge arm, and the bottom layer 94 of the swivel arm 36. This construction effectively sandwiches together the layers 92,94 of the hinge arm 38, with the layers 92,94 of the swivel arm 36 to effectively prevent their movement from a juxtaposed orientation.
Although Figures 1 to 5 illustrate the swivel arm 36 and hinge arm 38 as incorporating stainless steel closure bars 50,70, it is to be appreciated that closure bars having the identical profile to that shown in Figure 3 may also be used in the manufacture of other components of the window closure system, including the locking assembly 30. Figures 7 illustrates best the multi-point locking assembly 30 used to secure or lock the window sash 12 closed against the window frame 16. The locking assembly 30 consists of at least two vertically spaced ramp members 1 SOa, l SOb which in assembly are secured to the sash 12, a tie bar assembly 152, and an actuating handle 154 which are mounted to the vertical frame member 18a (Figure 1 ). As will be described, the actuating handle 154 is reciprocally movable about a pivot 156 to selectively raise or lower the tie bar assembly 152 into and out of engagement with the ramp members 150a,150b to lock or unlock the window sash 12.
The tie bar assembly 152 includes a closure or tie bar 160, a pair of vertically spaced mounting brackets 162a,162b used to vertically and slidably secure the tie bar 160 to the vertical frame member 18a and a pair of nylon Gaming rollers 164a,164b each rotatably mounted about a stainless steel bearing stud 166. The tie bar 160 is formed from a folded stainless steel sheet and has a substantially cross-sectional identical profile as that of the closure bars 50,70 as is shown in Figure 3. The brackets 162a,162b are preferably also formed from stainless steel so as to minimize the likelihood of corrosion in the event of metal-on-metal contact with the tie bar 160.
As shown best in Figure 7, the lowermost end of the tie bar 160 is coupled to the handle 154 by a linkage arm 170 which is joined to the tie bar 160 at a first end by means of a releasable pivot stud 168, and which is engaged at its second other end by a Gaming pin 170 mounted to the handle 154.
The bearing studs 166 are inserted through bores 174a,174b (Figure 8) which are formed through the tie bar 160. The bearing studs 166 are thereafter crimped or stamped to provide enlarged upper and lower flanges which overly the adjacent portions of the metal layers which form the tie bar 160 in essentially the identical manner as the upwardly flanges 122,124 which overly the layers 92,94 of the bar SO shown in Figure 5.
The movement of the handle 154 effects sliding movement of the tie bar 160 downwardly to achieve unlocking of the window sash 12 whereby the rollers 164a,164b are lowered out of engagement with the ramp members 150a,150b. When the window sash 16 is fully closed, the rotation of the handle 154 downwardly may thus be used to raise the tie bar 160 and return the rollers 164a,164b into engaging contact with the ramp members 1 SOa, l SOb to lock the window sash 12 as the rollers 164a,164b are moved thereagainst.
Optionally, the rollers 164a,164b may be formed from stainless steel as either a freely rotatable bushing, or integrally formed as part of each stainless steel stud 166.
It is to be appreciated that because of their stainless steel composition, the closure bars 50,70 of the present invention provide enhanced corrosion resistance, making the window hardware particularly suited for use in high humidity applications, such as coastal and marine environments. Furthermore, for increased longevity, more preferably each of the stop studs, bosses 120 and pivots 66 are also formed from stainless steel and/or stainless steel alloys, thereby providing a minimum number of window hardware parts which may otherwise be susceptible to premature corrosion.
By forming the exterior mounted tie bar assembly 152 entirely out of non-corroding materials, the window locking assembly 30 closure hardware will possess increased corrosion resistance and exhibit enhanced life span.
Although the preferred embodiment of the invention illustrates the hinge arm closure bar 50 and tie bar 160 as being manufactured from a stainless steel sheet so as to have two overlapping metal layers 92,94 so that the invention is not so limited. It is to be appreciated that if desired, the tie bar 160 and closure bars 50, 70 could be formed with three, four or more overlapping stainless steel layers as for example by bending a stainless steel sheet into an S
pattern or the like. Similarly, in a less preferred embodiment, the closure bars 50,70 and tie bar 160 could be formed simply by laminating a series of separate thin stainless steel sheets, and securing the sheets with rivets or other suitable fasteners.
Alternately in a more simplified construction the closure bars 50, 70 could be formed folding a single metal sheet about only one edge in a flattened C-shape.
Although the detailed description describes and illustrates various preferred embodiments, the invention is not limited. Many modifications and variations will now occur to persons skilled in the art. For a definition of the invention, reference may be had to the appended claims.
Claims (34)
1. A corrosion resistant window closure member for use as window hardware for the securment of a window sash to a window frame, said closure member comprising an elongated rigid rectangular body portion having substantially parallel longitudinally extending edges, said body portion being formed from a stainless steel sheet and characterized by longitudinally extending folded edges, and two juxtaposed generally planar metal layers extending from at least one associated longitudinally extending folded edge.
2 The closure member as claimed in claim 1, wherein said stainless steel sheet has a thickness selected at between .25mm and 2mm.
3. The closure member as claimed in claim 1 or claim 2 wherein a first one of said layers substantially overlies the second other one of said layers.
4. The closure member as claimed in claim 3 wherein said first layer includes a longitudinally extending seam, said closure member further including at least one boss engaging portions of said first layer on each side of said seam to assist in maintaining said first layer in juxtaposition with said second layer.
5. The closure member as claimed in any one of claims 1 to 4 further including, a bore extending through said juxtaposed layer, and at least one stud positioned in said bore and engaging a portion of each of said metal layers to substantially prevent said metal layers from moving out of juxtaposition.
6. The closure member as claimed in any one of claims 1 to 5 wherein said window hardware is selected from the group consisting of a hinge arm, a swivel arm and a tie bar.
7. A corrosion resistant window closure member comprising, an elongated rigid rectangular body portion having substantially parallel longitudinally extending edges, said body portion comprising a single, continuous, stainless steel sheet having a first generally planar layer and two juxtaposed generally planar metal members, each of said metal members extending from a respective one of said longitudinally extending edges and being in substantial abutting contact with said planar layer between said edge and an end portion thereof, a bore extending through the planar layer between the metal members, a keeper positioned in the bore and engaging a portion of each of the metal members and substantially preventing the metal members from moving out of abutting contact with the planar layer, the closure member being mounted to one of a window sash and a window frame for selective movement to engage the other of the window sash and window frame for preventing movement of the window sash relative to the window frame.
8. The closure member of claim 7 wherein said closure member is selected from the group consisting of a hinge arm, a swivel arm and a tie bar.
9. The closure member as claimed in claim 7 or claim 8 wherein said juxtaposed metal members substantially overly said planar layer.
10. The closure member as claimed in claim 9 wherein said juxtaposed metal members being separated by a longitudinally extending seam, and said keeper comprises a boss engaging portions of each said metal members on each side of said seam to assist in maintaining said metal members in substantially abutting contact with said planar layer.
11. The closure member as claimed in any one of claims 7 to 10, wherein said stainless steel sheet has a thickness of between 0.25 mm and 2 mm.
12. The closure member as claimed in claim 7 or claim 8 wherein said juxtaposed metal members substantially overly the planar layer, said metal members being separated by a longitudinally extending seam.
13. The closure member as claimed in claim 10 or claim 12 wherein said keeper engages said portion of each said metal member on each side of said seam to assist in maintaining said metal members in substantially abutting contact with said planar layer, said keeper being selected from the group consisting of a camming boss, a locking stud, a snap stud, a stop boss and a pivot boss.
14. A corrosion resistant window closure member comprising, an elongated generally rectangular body having substantially parallel longitudinally extending edges, the body comprising a single, continuous, steel sheet having a first generally planar layer and two juxtaposed substantially planar metal members, each of said metal members extending from a respective one of said longitudinally extending edges and being in substantial abutting contact with said planar layer between said edge and an end portion thereof, said steel sheet comprising one of a stainless steel and a stainless steel alloy, a bore extending through the planar layer between the metal members, a keeper positioned in the bore and engaging a portion of each of the metal members and substantially preventing the metal members from moving out of abutting contact with the planar layer, the closure member being mounted to one of a window sash and a window frame for selective movement to engage the other of the window sash and window frame for prevention movement of the window sash relative to the window from.
15. The closure member as claimed in claim 14, wherein said juxtaposed metal members being separated by a longitudinally extending seam.
16. The closure member of claim 15 wherein said keeper engages a part of each said metal member on each side of said seam.
17. The closure member of any one of claims 14 to 16 wherein said keeper is selected from the group consisting of a taming boss, a locking stud, a snap stud, a stop boss and a pivot stud.
18. The closure member as claimed in any one of claims 14 to 17 wherein said steel sheet has a thickness of less than 1 mm.
19. The closure member as claimed in any one of claims 14 to 18 wherein closure member comprises a tie bar.
20. A corrosion resistant window closure member comprising, an elongated rigid rectangular body portion having substantially parallel longitudinally extending edges, said body portion comprising a single, continuous, corrosion resistant metal sheet having a first generally planar layer and two juxtaposed generally planar metal members, each of said metal members extending from a respective one of said longitudinally extending edges and being in substantial abutting contact with said planar layer between said edge and an end portion thereof, a bore extending through the planar layer between the metal members, a. a keeper positioned in the bore and engaging a portion of each of the metal members and substantially preventing the metal members from moving out of abutting contact with the planar layer, the closure member being mountable to one of a window sash and a window frame for selective movement to engage the other of the window sash and window frame for preventing movement of the window sash relative to the window frame.
21. The closure member as claimed in claim 20 wherein said juxtaposed metal members being separated by a longitudinally extending seam, and said keeper comprises a boss engaging portions of each said metal members on each side of said seam to assist in maintaining said metal members in substantially abutting contact with said planar layer.
22. The closure member as claimed in claim 20 or claim 21, wherein said sheet comprises a stainless steel or stainless steel alloy sheet having a thickness of between 0.25 mm and 2 mm.
23. The closure member as claimed in any one of claims 20 to 22 wherein said juxtaposed metal members substantially overly the planar layer, said metal members being separated by a longitudinally extending seam.
24. The closure member as claimed in claim 23 wherein said keeper engages said portion of each said metal member on each side of said seam to assist in maintaining said metal members in substantially abutting contact with said planar layer, said keeper being selected from the group consisting of a camming boss, a locking stud, a snap stud, a stop boss and a pivot boss.
25. A corrosion resistant window closure member comprising, an elongated generally rectangular body having substantially parallel longitudinally extending edges, the body comprising a single, continuous, metal sheet having a first generally planar layer and at least one juxtaposed substantially planar metal member extending from an associated one of said longitudinally extending edges and being in substantial abutting contact with said planar layer between said edge and an end portion thereof, a bore extending through the planar layer at least partially through the at least one metal member, a keeper positioned in the bore and engaging a portion of each of the planar layer and the at least one metal member and preventing the at least one metal member from moving out of abutting contact with the planar layer, the closure member being mountable to one of a window sash and a window frame for selective movement to engage the other of the window sash and window frame for prevention movement of the window sash relative to the window frame.
26. The closure member as claimed in claim 25, including a pair of metal members, each being juxtaposed with said planar layer being separated by a longitudinally extending seam, wherein said keeper engages a part of each said metal member on each side of said seam.
27. The closure member of claim 26 wherein said keeper is selected from the group consisting of a Gaming boss, a locking stud, a snap stud, a stop boss and a pivot stud.
28. The closure member as claimed in any one of claims 25 to 27 wherein said steel sheet is selected from a sheet of stainless steel and a sheet of stainless steel alloy, and has a thickness of less than 2 mm.
29. The closure member as claimed in any one of claims 25 to 28 wherein closure member comprises a tie bar.
30. A corrosion resistant window closure member comprising, an elongated rigid rectangular body portion having substantially parallel longitudinally extending edges, said body portion comprising a single, continuous steel sheet having a first generally planar layer and two juxtaposed generally planar metal members, each of said metal members extending from a respective one of said longitudinally extending edges and substantially overlying and being in abutting contact with said planar layer , with said members being separated by a longitudinally extending seam, a bore extending through the planar layer between the metal members, a keeper positioned in the bore and engaging a portion of each of the metal members on each side of the seam and substantially preventing the metal members from moving out of abutting contact with the planar layer, the closure member being mountable to one of a window sash and a window frame for selective movement to engage the other of the window sash and window frame for preventing movement of the window sash relative to the window frame.
31. The closure member of claim 30 wherein said closure member is selected from the group consisting of a hinge arm, a swivel arm and a tie bar.
32. The closure member as claimed in claim 30 or claim 31, wherein said sheet comprises a stainless steel sheet having a thickness of between 0.25 mm and 2 mm.
33. The closure member as claimed in claim 30 or claim 31 wherein said sheet comprises a coated steel sheet.
34. The closure member as claimed in any one of claims 30 to 33 wherein said keeper is selected from the group consisting of a camming boss, a locking stud, a snap stud, a stop boss and a pivot boss.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA002572432A CA2572432C (en) | 2001-04-06 | 2002-03-06 | Corrosion resistant window closure system |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US09/826,920 | 2001-04-06 | ||
| US09/826,920 US6618995B2 (en) | 2001-04-06 | 2001-04-06 | Corrosion resistant window closure member incorporating a closure member formed from folded sheet metal |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002572432A Division CA2572432C (en) | 2001-04-06 | 2002-03-06 | Corrosion resistant window closure system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2374890A1 CA2374890A1 (en) | 2002-10-06 |
| CA2374890C true CA2374890C (en) | 2007-04-10 |
Family
ID=25247846
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002374890A Expired - Lifetime CA2374890C (en) | 2001-04-06 | 2002-03-06 | Corrosion resistant window closure system |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US6618995B2 (en) |
| CA (1) | CA2374890C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102012209493A1 (en) * | 2012-06-05 | 2013-12-05 | Roto Frank Ag | Multi-layer scissor arm |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NZ515372A (en) * | 2001-11-12 | 2004-03-26 | Interlock Group Ltd | Casement window operator system having a driven arm pivotally coupled to a sash mounting |
| SE0302242L (en) * | 2003-08-19 | 2005-01-25 | Teknoskand Invent Ab | Windows, shutters or the like with locked swing arm fittings |
| US8448996B2 (en) | 2006-06-14 | 2013-05-28 | Newell Operating Company | Casement window lock |
| US8555562B2 (en) * | 2010-06-29 | 2013-10-15 | David Ruff | Locking jack for a window well cover |
| CN107675981A (en) * | 2017-09-15 | 2018-02-09 | 颍上县皖润米业有限公司 | A kind of high-altitude windowing facility |
Family Cites Families (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US487939A (en) * | 1892-12-13 | Method of making butt-hinges | ||
| US1475967A (en) * | 1919-08-08 | 1923-12-04 | Gen Motors Corp | Hinge structure for automobile hoods |
| US1614166A (en) * | 1925-09-16 | 1927-01-11 | Vincent J Whitney | Swinging-window mounting |
| US1772560A (en) * | 1927-10-08 | 1930-08-12 | Soss Joseph | Hinge |
| US1749913A (en) * | 1927-12-10 | 1930-03-11 | Hudson Motor Car Co | Method and apparatus for shaping sheet-metal articles |
| US2112312A (en) * | 1935-09-05 | 1938-03-29 | Moore Drop Forging Company | One-piece shrouded hinge member and method of forming same |
| US2194902A (en) * | 1938-11-12 | 1940-03-26 | Lawrence H Heuer | Method of making head lining listing supports |
| US2977810A (en) * | 1955-10-17 | 1961-04-04 | Truth Tool Company | Closure operator |
| US3415754A (en) * | 1966-02-28 | 1968-12-10 | Dow Chemical Co | Corrosion inhibitors |
| US5079815A (en) * | 1989-01-25 | 1992-01-14 | Koller Manufacturing Corporation | Method of making a cassette reel spring having rolled edges |
| US5152102A (en) | 1991-12-26 | 1992-10-06 | See Jack C | Cam adjustment device for adjustable casement sash unit |
| CA2197842C (en) | 1997-02-18 | 2000-06-06 | Giuseppe Demarco | Releasable locking pivot member for use in high humidity environments |
| US5964011A (en) | 1997-09-12 | 1999-10-12 | Newell Operating Company | Adjustable casement window hinge |
| US5898977A (en) * | 1997-09-25 | 1999-05-04 | Advantage Manufacturing Corp., Inc. | Non-handed in-line window supporting bracket |
| CA2230781A1 (en) | 1998-02-27 | 1999-08-27 | Giuseppe Demarco | Window lock |
| US6283535B1 (en) * | 1999-08-20 | 2001-09-04 | Ohi Seisakusho Co., Ltd. | Apparatus for driving vehicle door to open and close |
-
2001
- 2001-04-06 US US09/826,920 patent/US6618995B2/en not_active Expired - Lifetime
-
2002
- 2002-03-06 CA CA002374890A patent/CA2374890C/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102012209493A1 (en) * | 2012-06-05 | 2013-12-05 | Roto Frank Ag | Multi-layer scissor arm |
| EP2672044A3 (en) * | 2012-06-05 | 2015-12-30 | Roto Frank Ag | Multilayer scissor arm |
Also Published As
| Publication number | Publication date |
|---|---|
| US6618995B2 (en) | 2003-09-16 |
| US20020144464A1 (en) | 2002-10-10 |
| CA2374890A1 (en) | 2002-10-06 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKEX | Expiry |
Effective date: 20220307 |