WO2015200614A1

WO2015200614A1 - Curtain wall mullions, transoms and systems

Info

Publication number: WO2015200614A1
Application number: PCT/US2015/037659
Authority: WO
Inventors: Todd Frederick
Original assignee: Todd Frederick
Priority date: 2014-06-25
Filing date: 2015-06-25
Publication date: 2015-12-30
Also published as: EP3314065A4; EP3314065C0; EP3314065B1; EP3314065A1; ES2969324T3; CA2951502C; CA2951502A1

Abstract

A curtain wall mullion or transom including a component made of a thermally insulating material bonded to a metal structural segment such that a stem of the component extends into a pocket defined by panels of a curtain wall system. The component may be a reinforced fiberglass polymer component and bonded to the metal segment with an adhesive and may isolate the metal structure from the atmosphere outside the curtain wall and may include a seal receiver which abuts a panel of the curtain wall. The metal segment may be made of steel or aluminum or other metal. A pultrusion method is used to make the fiberglass component to have a profile configured to cover an entirety of an outside of the mullion or transom and to have a pair of receivers for receiving seals to abut against panels of the curtain wall.

Description

TITLE OF INVENTION

CURTAIN WALL MULLIONS, TRANSOMS AND SYSTEMS

This application claims the benefit and priority of Provisional Patent Application Serial Number 61 /943 ,786 filed February 24, 201 4, for CURTAIN WALL

MULLIONS, TRANSOMS AND SYSTEMS under 35 U.S.C. § 1 1 9(e), incorporated herein by reference in its entirety for continuity of disclosure.

DESCRIPTION

BACKGROUND

[Para 1 ] There are curtain wall systems or frameworks in which glazing or other panels are fitted. Curtain walls typically comprise a grid-like framework usually made of aluminum profiled members arranged with transoms (i.e., structures that typically run horizontally) and mullions (i.e., structures that typically run vertically). Glazing or window panels and non-transparent panels may be secured against the transoms and mullions. The framing is attached to a building structure.

SUMMARY OF THE INVENTION

[Para 2] The invention pertains to a cu rtain wall system and separate components such as mu llions or transoms that include a thermally insulating component. In some embodiments, the insulating component is a fiberglass component such as a fiberglass reinforced polymer that is bonded to a metal structure. The metal structure may be made of steel or aluminum for instance. The bonding is accomplished using adhesives and/or other bonding techniques and produces a mullion or transom having sufficient strength to support the panels or glazing of the curtain wall. The thermally insulating fiberglass component enhances the insulating properties of the mullions, transoms and curtain wall system.

[Para 3] In accordance with an aspect of the invention, a steel mullion or transom includes a stem projecting from the mullion or transom where the stem is configured to project into a space between a first panel and a second panel of a curtain wall. Since the stem is made of thermally insulating material the structure provides enhanced overall insulating properties of a resu ltant curtain wall system.

[Para 4] In a further aspect of the invention, a mullion or transom for use on a curtain wall system having at least one panel comprises a metal structural segment and a component made of thermally insulating material and bonded to the metal segment, the component including a seal receiver configured to receive a seal to be positioned between the metal segment and the panel

[Para 5] In a further aspect of the invention a cu rtain wall system includes a cell having a first mullion, a second mullion, a first transom and a second transom, the first transom including a metal structure having a fiberglass component bonded to the metal structure, a panel secured to the cell, the fiberglass component including a stem configured to support a weight of the panel.

[Para 6] In a further aspect the invention includes a method of making a component by pultruding a fiberglass to have a profile configured to cover an entirety of an outside of a mullion or transom of a curtain wall and to have a pair of receivers for receiving seals to abut against panels of the cu rtain wall. Further profiles are contemplated u nder the methods of making components by pu ltrusion.

[Para 7] The above partial summary of the present invention is not intended to describe each illustrated embodiment, aspect, or every

implementation of the present invention. The figures and detailed description and claims that follow more particularly exemplify these and other

embodiments and further aspects of the invention.

BRIEF DESCRIPTION OF THE DRAWINGS

[Para 8] The invention may be more completely understood in

consideration of the following description of various embodiments of the invention in connection with the accompanying drawings, in which:

[Para 9] Figure 1 is a front view of a cell of a curtain wall system according to some embodiments of the present invention.

[Para 1 0] Figure 2 is a sectional view of a mullion along line 2— 2 of Figure 1 , according to some embodiments. [Para 1 1 ] Figure 3A is a sectional view of a transom along line 3— 3 of Figure 1 , according to some embodiments.

[Para 1 2] Figure 3 B is a sectional view of a transom along line 3— 3 of an alternative aspect of Figure 1 , according to some embodiments.

[Para 1 3] Figure 3C is a sectional view of a transom along line 3— 3 of an alternative aspect of Figure 1 , according to some embodiments.

[Para 1 4] Figure 3 D is a sectional view of a transom positioned along a bottom wall of an alternative aspect of Figure 1 , according to some

embodiments.

[Para 1 5] Figure 4 is a sectional view of a mullion along line 2— 2 of Figure 1 , according to some further embodiments involving use of aluminu m.

[Para 1 6] Figure 5 is a sectional view of a transom along line 3— 3 of Figure 1 , according to some further embodiments involving use of aluminu m.

[Para 1 7] Figure 6 is a sectional view of a mullion along line 2— 2 of Figure 1 , according to some further embodiments.

[Para 1 8] Figure 7 is a sectional view of a transom along line 3— 3 of Figure 1 , according to some further embodiments.

[Para 1 9] Figure 8 is a sectional view of a mullion along line 2— 2 of Figure 1 , according to some further embodiments. [Para 20] Figure 9 is a sectional view of a mullion along line 2—2 of Figure 1 , according to some further embodiments.

[Para 21 ] Figure 10 is a sectional view of a mullion positioned along an end wall of Figure 1 , according to some further embodiments.

[Para 22] While the invention is amenable to various modifications and alternative forms, specifics thereof have been shown by way of example in the drawings and will be described in detail. It should be understood, however, that the intention is not necessarily to limit the invention to the particular embodiments, aspects and features described. On the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention and as defined by the appended claims.

DETAILED DESCRIPTION OF THE INVENTION

[Para 23] Figure 1 is a front view of a cell 20 of a curtain wall system 22 according to some embodiments. System 22 is shown in partial (and panels are not shown). It may be appreciated that multiple cells 20 may comprise system 22. Figure 2 is a sectional view of a mullion 24 of cell 20. Figure 3 is a sectional view of a transom 26 of cell 20. A similar transom 26' is positioned generally parallel with transom 26. A similar mullion 24' is positioned generally parallel with mullion 24. Together mullions 24, 24' and transoms 26, 26' comprise a single cell 20 of curtain wall system 22. It may be appreciated that mullions 24 and transoms 26 also comprise additional cells 20' or components of cells 20' of system 22. It may be appreciated that panels such as windows, glass, or plates or other objects may be inserted within a cell 20 to cover or span the space, light or opening created by mullions 24 and transoms 26.

[Para 24] As shown in Figure 2, mullion 24 includes a first mullion segment 30. In some embodiments mullion 24 includes a second mullion segment 32 and a third mullion segment 34. Mullion segments 30, 32 and 34 form a mullion 24 and define a mullion cavity 29. In some embodiments mullion 24 is made of steel. Particularly, segments 30, 32 and 34 may be made of steel. In one example, segments 30, 32 and 34 may be formed by bending 1 2 gage steel sheets. In one aspect mullion 24 includes a polymer component 40 which is bonded to mullion 24. Polymer component 40 is formed of a thermally insulating material. In one aspect polymer component 40 is made of fiberglass reinforced polymer (FRP) or glass-fiber reinforced polymer (GFRP) which in one example is a fiber reinforced polymer including plastic. A variety of glass, fiberglass and /or plastics may be used. In one aspect polymer component 40 is made of material including fiberglass and polyester, or fiberglass and vinyl ester, or fiberglass and polymers, and may include non-fire retardant materials or fire retardant materials. Polymer component 40 may be made using a pu ltrusion process and may include reinforcing structures or mats to provide structural support. Rovings may be located in the component 40 which may also include an external coating or coatings. Polymer component 40 thus has favorable insulating features. In one aspect involving steel structural segments 30, 32 and 34, polymer component 40 fills a gap that would otherwise lead from outer side 25 to cavity 29. [Para 25] In one aspect polymer component 40 is bonded to mullion 24 with an adhesive. A variety of bonding ingredients and techniques may be used to secure polymer component 40 to mullion 24. As shown in one aspect, polymer component 40 includes an interlock 42 which is configured to receive tail 31 of first mullion segment 30. Tail 31 may be both friction fit within interlock 42 and also bonded within interlock 42 with an adhesive and/or bonding treatments. In one aspect interlock 42 is a gap defined by polymer component 40. Polymer component 40 may include a lip 43 which in part defines interlock 42 as shown. Polymer component 40 also includes a first arm 44 having a tail-contact surface 45 which is bonded to the outside surface of tail 31 . In one aspect, tail contact surface 45 covers the entire area of the outside surface of tail 31 . In this manner tail 31 is not exposed to the outside element which would otherwise tend to corrode or deteriorate tail 31 . Polymer component 40 also includes a second arm 46 having a tail contact surface 47 which in one aspect may be bonded to the outside surface of tail 33 of third mullion segment 34. In one aspect tail contact surface 47 may cover the entirety of the outside surface of tail 33. It may be appreciated that contact surface 47 may also cover less than the entirety of the outside surface of tail 33. Polymer component 40 may also include a further lip 48 configured to adhere to tail 33. In further aspects arm 46 may loosely fit against tail 33 (i.e., not be bonded) so that arm 46 may slide with respect to tail 33. Likewise, lip 48 may also be a loose fit against tail 33. It may be appreciated that alternative configurations of polymer component 40 may be used to assist in adhering polymer component 40 to mullion 24 (whether adhering to segment 30, 32 or 34). Polymer component 40 is configured to adhere to mullion 24 while also having a stem portion 80 extending between or into a gap or pocket defined in part by panels 50, 50'. A fastener 39 may insert through a pressure plate 36 and into the stem to secure panels 50, 50' in position. Seals 60, 60 may be positioned between pressure plate 36 and panel frame 52. A cover plate 38 may be positioned to cover pressure plate 36. It may be appreciated that panel 50 may be positioned within cell 20 while panel 50' may be positioned within an adjacent cell 20'.

[Para 26] In a further aspect polymer component 40 includes a seal receiver 49 configured to receive a seal 60. In one aspect seal receiver is defined by seal fingers 41 . Seal 60 is configured to insert into seal receiver 49 and between first arm 44 and panel frame 52. Seal 60 may fiction fit to panel frame 52 and may also be bonded to panel frame 52. Seal 60 may be of a

conventional variety used in curtain wall systems. Seal 60 may also include a wrap segment 62 to partially cover an edge of first arm 44. In a further aspect polymer component 40 includes a further seal receiver 49 positioned at or defined by second arm 46. In one aspect seal receiver 49 may be configu red to receive a seal 66 configured to interact with a shoulder 70 described below. In one aspect seal 66 is positioned between second mullion segment 32 and third mullion segment 34. [Para 27] As shown in Figure 2 mullion 24 includes a shoulder 70 connected to second mullion segment 32. In one aspect shoulder 70 includes an interlock 42 '. Interlock 42' is configured to receive tail 35 of segment 32. Tail 35 may friction fit within interlock 42 ' and/or be bonded to shoulder 70 within interlock 42'. Shoulder 70 is made from the same or similar material as is polymer component 40 described above. In one aspect shoulder 70 abuts polymer component 40. A sealant 64 may be applied where shoulder 70 meets polymer component 40. In a further aspect shoulder 70 includes a seal receiver 49'. Receiver 49' is configured to receive a seal 60. In one aspect seal receiver 49' is defined by seal fingers 41 . Seal 60 is configu red to insert into seal receiver 49' and between shoulder 70 and panel frame 52. Seal 60 may friction fit to panel frame 52. Seal 60 may be of a conventional variety used in curtain wall systems. Panel frame 52 may also be secured to seal 60 with an adhesive. Seal 60 may also include a wrap segment 62 to partially cover an edge of shoulder 70. In a further aspect shoulder 70 may be configured without elbow 71 (i.e., elbow extends from shoulder 70 at line "e" as shown in Figu re 2). Tail 35 may extend further toward tail 31 to lessen a gap therebetween. Shoulder 70 may friction fit or interlock and/or bond to tail 35.

[Para 28] It may be appreciated that polymer com ponent 40 and shoulder 70 combine to cover the entirety of the outer side 25 of mullion 24.

Particularly, polymer component 40 and shoulder 70 are configured such that no portion of mullion 24 is exposed to outer side 25, nor is any segment of mullion 24 in communication with the panels 50, 50' or the pocket 28 between panels 50, 50'. Maintaining the segments of mullion 24 in isolation from the outside atmosphere improves the insulating characteristics of system 22.

[Para 29] As shown, mullion 24 is a composite structure made of steel segments 30, 32 , 34 to which the fiberglass items, such as polymer component 40 and shoulder 70 are bonded or laminated. Polymer component 40 and shoulder 70 are configured to remain connected to mullion 24. In one aspect polymer component 40 and shoulder 70 are continuous in that they span the length of mullion 24.

[Para 30] As shown in Figure 3A, transom 26 (i.e., a horizontally oriented element of cell 20) includes polymer component 1 40 which is made of material that is the same or similar to the material used to make polymer component 40 referenced above. Polymer component 1 40 includes a first arm 1 44 having a transom contact surface 1 45 and a second arm 1 46 having a transom contact su rface 1 47. In one example component 1 40 is bonded to transom 26 at least at contact surfaces 1 45, 1 47. Particularly, first arm 1 44 and second arm 1 46 may be bonded with an adhesive and other bonding techniques to transom wall 1 30. Wall 1 30 is formed of metal and in one aspect is formed of steel and in one aspect is bent into configuration.

[Para 31 ] As shown in Figure 3A, wall 1 30 includes receiving arm 1 31 , 1 31 '. In one aspect arm 1 31 is integrally connected to wall 1 30 and is configured to receive contact surface 1 45. Receiving arm 1 31 may be bent into position as shown for instance in Figure 3 and then welded to transom plate 58 at weld 56. In one aspect receiving arm 1 31 leads to receiving hand 1 32 and hand 1 32 is in turn welded to transom plate 58 with weld 56. It may be appreciated that hand 1 32 ' may be oriented parallel or at least substantially parallel with hand 1 32. As such, hand 1 32 and hand 1 32 ' are opposing walls. Polymer component 1 40 further includes fingers 1 41 a, 1 41 b configured to bond with wall 1 30. In one aspect finger 1 41 a is bonded to hand 1 32 and finger 1 41 b is bonded to hand 1 32 '. An adhesive may be applied between polymer component 1 40 and wall 1 30 to securely bond component 1 40 along an entirety of the exterior surface of arm 1 31 and continuing about the curve 1 33 and along hand 1 32. Likewise an adhesive may be applied to securely bond component 1 40 along an entirety of the exterior surface of arm 1 31 ' and continuing about the curve and along hand 1 32 '. It may be appreciated that the combination of adhesive and the structural matching arrangement of fingers 1 41 combine to provide a secure bond sufficient to allow component 1 40 to withstand the forces associated with bearing the weight of panels 50, 50' and other forces associated with or applied to the panels.

[Para 32] Fingers 1 41 a, 1 41 b also allow for efficient alignment of

component 1 40 onto wall 1 30. Fingers 1 41 are positioned on component 1 40 to match the gap between hands 1 32, 1 32 ' and to also receive an adhesive between component 1 40 and wall 1 30. Wall 1 30 is bent with corners 1 33 to match the contou r of finger 1 41 a (and/or vice versa) and the same is presented with finger 1 41 b and at a distance to match the gap between hands 1 32 , 1 32 ', to provide a secure bond. A variety of steps for preparing the surfaces and /or curing or treating the adhesives, as needed, may be used to achieve a secure bond of component 1 40 to wall 1 30. It may be appreciated that fingers 1 41 may be positioned in different locations, and in some applications may be reconfigured into different shapes/dimension and /or removed altogether.

[Para 33] It may be appreciated that polymer component 1 40 covers the entirety of outer side 1 25 of transom 26. Such configuration assures that no portion of transom 26 is in communication with the exterior atmosphere or panels 50, 50' or the pocket 28 between panels 50, 50'. Maintaining such isolation improves the insulating characteristics of system 22.

[Para 34] In a further aspect polymer component 1 40 includes a seal receiver 1 49. Receiver 1 49 is configured to receive a gasket or seal 60. In one aspect seal receiver is defined by seal fingers 41 . Seal 60 is configured to insert into seal receiver 1 49 and between component 40, 1 40, and panel frame 52, i.e., between first arm 1 44 and panel frame 52. Seal 60 may be bonded to panel frame 52. Seal 60 may be of a conventional variety used in curtain wall systems.

[Para 35] In one aspect a pressure plate 36 is fastened with a screw 39 to stem 80 of component 1 40 and applies pressure to seals 60 which in turn apply pressure to panels 50, 50' and against component 1 40. It may be appreciated that a setting block may be positioned between stem 80 and panel 50. It may be appreciated that component 1 40 together with pressure plate 36 secure panels 50, 50' to transom 26. [Para 36] In a further aspect the stem 80 includes a groove 82 configu red to receive a fastener 39 (see also Figure 3 B). Groove 82 may include a taper 84 to assist in receiving fastener 39. Groove 82 may be a continuous groove which spans the length of component 40, 1 40. It may be appreciated that groove 82 operates as a pilot hole to receive and contain fastener 39. In one aspect groove 82 is configured to securely receive a fastener such as a screw, including a #1 4 stainless steel HWH SMS screw. A plurality of screws 39 may be inserted along transom to secure a plurality of panels 50, 50' into position. In one instance screws 39 may be positioned at 9 inches on center. Other arrangements may be used as desired.

[Para 37] Figure 3 B shows a further aspect of transom 26 having a symmetrically disposed polymer component 1 40. Also shown is a setting block 37 positioned between component 1 40, particularly, between the stem 80 of component 40, and a panel 50. In one example setting block 37 is a silicone block of about 4 inches to 6 inches in length. Block 37 may also be a

continuous length to match the length of transom 26 or in other examples may be a shorter length. Block 37 may include a block tip 37a which is a projection from block 37 configured to abut component 40 for appropriate spacing of block 37 beneath panel 50 within pocket 1 28. In one example a number of setting blocks 37 may be used and staggered at various locations along the system 22. Blocks 37 may be positioned at quarter points along panel 50, for example. Block 37 or blocks 37 allow for the weight of a panel 50 to be transferred to the stem 80 or polymer component 40. Use of blocks 37 may also be employed with reference to Figure 5 and Figure 7. In this manner the weight of panels 50 is supported by polymer component 40. Pressure plate 36, which is secured to polymer component 40 by a fastener 39, for instance, applies pressure to seals 60, 60, which in turn apply pressure to panels 50, 50'. In one aspect seal 60 may include, for instance, a 60 durometer silicone gasket. The interior side seal 60 may include a lineal or moled corner configuration for instance. Pressure plate 36 may also include a weep hole 51 which is an aperture defined by plate 36. Weep hole 51 allows for moisture to escape from pocket 1 28. A gasket, such as gasket 53 may be positioned between pressure plate 36 and stem 80. Gasket 53 may include a silicone material, such as a 70 durometer silicone gasket separator. It may be appreciated that polymer component 40 extends into pocket 1 28 between panels 50, 50'. Pressure plate 36 may extend a length of transom 26. Pressure plate 36 may include several weep holes 51 spaced at various positions along the length of plate 36. In one example weep hole 51 may be positioned on pressure plate 36 at a position above polymer component 40 as shown. This allows water or moisture to escape from below panel 50.

[Para 38] Figure 3C shows a fu rther aspect of transom 26 having a symmetrically disposed polymer component 1 40. In this aspect the transom 26 includes a glazing tape 54 between panel 50 and component 40. In one aspect glazing tape 54 is a two sided glazing tape. Use of glazing tape 54 secures panel to polymer component 40 which is in turn secured to transom wall 1 30. In addition, a silicone layer 68 such as structural silicone is also positioned between panel 50 and component 40. Together the glazing tape 54 and structural silicone 68 secure panel to transom 26 while also maintaining a seal relationship. A silicone gasket 69 is positioned at an edge of component 40 and structural silicone 68 for additional insulation and/or for cosmetic

purposes to conceal the structure. Gasket 69 inserts into a gasket receiver 69' of component 40. A similar arrangement may also be used to secure panel 50' to transom 26. It may be appreciated that use of glazing tape 54 and structural silicone 68, for instance, allows for securing panel 50 to transom 26 without the use of a fastener such as shown the Figure 3A or Figure 3B. A sealant 64 may be applied between panels 50, 50', for instance, and/or applied to stem 80 of component 40. A setting block 37 may also be used to receive panel 50.

[Para 39] Figure 3 D shows a fu rther aspect of transom 26 having a symmetrically disposed polymer component 40 and where the transom 26 is positioned adjacent a horizontal (such as at a bottom area of a curtain wall system). A single (upper) panel 50 is used in this aspect. A PVC spacer 67 is positioned between pressure plate 36 and component 40. A sealant 64 and seal 60 may be positioned between the horizontal and cover plate 38 and at the joint of component 40 and transom wall 1 30. A setting block 37 may be used to set transom 26.

[Para 40] As shown in Figure 4, a further aspect of the invention is shown where mullion 224 is made of aluminum. Mullion 224 is made of a first mullion segment 230 and a second mullion segment 232. A polymer component 240 is bonded to mullion 224. In one aspect polymer component 240 is bonded, by an adhesive and other bonding techniques, to segment 230. Polymer

component 240 may include an interlock 242 to receive a mullion finger of segment 230. Interlock 242 in one aspect is configured as part of first arm 244. First arm 244 may include a lip 243 which inserts into a gap defined by segment 230. Adhesive is applied to the surfaces to bond first arm 244 to segment 230. Bonding treatments and procedures are used to assure a rigid connection. In one aspect contact surface 245 is bonded to segment 230.

Polymer component 240 further includes seal receiver 249. Receiver 249 is configured to receive a seal 60. In one aspect seal receiver is defined by seal fingers 241 . Seal 60 is configured to insert into seal receiver 249 and between first arm 244 and panel frame 52. Seal 60 may be bonded to panel frame 52. Seal 60 may be of a conventional variety used in curtain wall systems.

[Para 41 ] As shown in Figure 4, transom 224 further includes shoulder 270 laminated or bonded to mullion 224. Particularly shoulder 270 is rigidly connected to segment 232. Shoulder 270 includes interlock 242 which may be the same or similar to interlock 242 defined by polymer component 240.

Segment 232 may also include tail 231 which may be friction fit and/or bonded within gap formed by lip 243. Shoulder 270 abuts polymer component 240 and may include seal 264. Shoulder 270 may further include seal receiver 249 to receive seal 60. Shoulder 270 and polymer component 240 are bonded to mullion 224 at outer side 225 and prevent mullion 224 from communication with panels 50, 50' or pocket 228. [Para 42] With reference to Figure 5 , a further aspect of transom 326 is shown which includes transom wall 330. Polymer component 340 is bonded to transom 326. Polymer component 340 is made of the same or similar material as is the polymer component 40 noted above. Polymer component 340 is configu red to friction fit and/or bond with or to outer side 335 of transom 326. In one aspect polymer component 340 includes a lip 343 which inserts into a gap formed in part by tail 331 of transom wall 330. Transom 326 may be made of aluminum and may be extruded, for instance. Lip 343 and tail 331 create an interlock 342. Polymer component 340 further includes a first arm 344 which includes a seal receiver 349. Receiver 349 is configured to receive a seal 60. In one aspect seal receiver is defined by seal fingers 341 . Seal 60 is configured to insert into seal receiver 349 and between first arm 344 and panel frame 52. Seal 60 may be bonded to panel frame 52. Seal 60 may be of a conventional variety used in curtain wall systems. Polymer component 340 in this aspect completely covers outer side 325 of transom 326.

[Para 43] With reference to Figure 6, an alternative mullion 24 which is similar to the mu llion 24 of figure 2 further includes a fastener 72 such as a screw. Fastener 72 includes additional support to further inhibit separation of polymer component 40 from mullion 24. In one aspect fastener 72 is

positioned through first arm 44 of polymer component 40 and through tail 31 of steel segment 30. A sealant may also be inserted to cover the head of fastener 72 and to seal the opening (or edges of the opening) which is created by fastener 72. Use of fastener 72 provides enhanced protection in the event of a fire situation where temperatures can be extreme. It is envisioned that the bonding of polymer component 40 (and shoulder 70) will withstand very high temperatures without separation and/or with use of fastener 72 such

separation will be inhibited or prevented. Polymer component 40 is made of fire retardant material. Accordingly, the features presented in Figure 6 provide a mullion with an enhanced fire rating.

[Para 44] Figure 7 shows transom 26 where fastener 72 is inserted through polymer component 1 40 where polymer component 1 40 is also bonded to transom 26. This arrangement has similar separation inhibiting aspect as noted with Figure 6.

[Para 45] Figure 8 shows a polymer component 40 bonded to mu llion 24. In this aspect mullion includes first mullion segment 30 having a tail 31 a leading to arm 31 b and hand 31 c. Arm 31 b extends from tail 31 a in a

generally perpendicular orientation. Hand 31 c extends from arm 31 b in a generally perpendicular orientation. Component 40 is bonded to segment 30 at tail 31 a, arm 31 b and hand 31 c. Mullion 24 also includes sedond mullion segment 32 which includes shoulder polymer component 70. Component 70 is made of the same or similar material as component 40. Component 70 is bonded to segment 32 at tail 35. It may be appreciated that the exterior surface of tail 35 is covered from the atmosphere or from communication with panel 50' or pocket 1 28. It may also be appreciated that the exterior surface of segment 30, such as at tail 31 a, arm 31 b and hand 31 c, is also covered from the atmosphere or from communication with panel 50 or pocket 1 28. Component 70 may wrap at least in part at a tip of tail 35. Component 40 and component 70 include seal receiver 49, 49' to receive respective seals 60.

[Para 46] Figure 9 shows a polymer component 40 and a polymer

component 70 bonded to mullion 24. The bonding is achieved by use of an adhesive applied. In this aspect component 40 is devoid of a stem and does not include an element which projects into pocket 1 28. Panels 50, 50' are secured to component 40 and component 70, respectively, with glazing tape 54 and structural silicone 68. A sealant 64 and seal 60 are applied between panels 50, 50'.

[Para 47] Figure 1 0 shows a polymer component 40 bonded to mullion 24. In one aspect mullion 24 is formed of bent sheet steel. In this view mullion 24 is positioned adjacent or against a vertical wall and connects with a transom 26 having wall 1 30. Transom 26 also includes an end plate 1 35 welded at an end of transom 26. End plate 1 35 receives fasteners which pass through mullion 24. A single segment mullion 24 is configured with opposing walls 1 32 , 1 32 ' to accommodate adherence of fingers 1 41 a, 1 41 b. Segment 40 is bonded to mullion 24 as noted above with respect to the further aspects. Segment 40 includes seal receivers 49, 49' to receive a seal 60 and/or a PVC spacer 67. It may be appreciated that an entirety of an outside surface of mullion 24 is isolated from the atmosphere or from communication with panel 50' and/or pocket 1 28. It may be appreciated that panel 50' may also be fastened to mullion 24 by use of glazing tape and silicone gasket as desired (and as an alternative to use of a fastener and/or stem 80).

[Para 48] While there are some curtain wall systems made of metal, most are made of aluminum. Some curtain wall installers may not appreciate the difficulties in working with steel systems due to the need to assure non- exposure of parts to the atmosphere or water which would otherwise result in deterioration, or for other reasons (or if they do, the exactness of the installation may require extra time and expense to complete the project). A tradesman accustom to installing aluminum systems might be more apt to make a mistake in dealing with steel, or if a mistake is made, the resulting damage is, or can be, much more significant as compared to a mistake in installing an aluminum system.

[Para 49] Accordingly, use of a system where the fiberglass reinforced polymer elements act as the stem and /or cover the face side of mullion 24 (or transom 26) is desired. It would not matter if an installer would be concerned about confronting a steel mu llion structure as opposed to an aluminum structure since either may be configured to prevent exposure of the frame element (while also providing improved insulating aspects).

[Para 50] Mullion 24 may be of varying lengths depending on the desired application. In one example, mullion 24, and thus segment 30 may have a length of up to 24 feet, or at least 24 feet. A press that is 24 feet long, or at least 24 feet long may be used to form mullion 24 at such length. Mullion 24 may also be of smaller length as desired and smaller presses and tooling may also be used. Mullion 24 may be formed at a variety of widths. In one example mullion 24 may vary in width from 1 ¾ inches (45 mm), for instance, to 4 inches (1 00mm) or more, and may vary in depth from 4 inches (1 00 mm), for instance, up to 1 6 inches (405mm) or more. Different lengths, widths and depths and other dimensions may also be used as desired.

[Para 51 ] All of such variously dimensioned mullions and transoms and individual segments can be manufactured using the same tooling and break press machine in a bending process. In another example mullion and transom may be manufactured using a roll forming technique. In a roll forming technique different tooling would be used to manufacture mullions or transoms having different dimensions. By utilizing the same break press machine and tooling, however, a variety of dimensions with custom or various profiles may be formed at lower cost. Steel cannot be extruded, or is extremely difficult or impossible to extrude with present or typical machinery or methods. Bending of steel is used to provide the profile as shown in the Figures, for example.

[Para 52] The bending of steel by use of a press brake and tooling to make curtain wall components or segments as presented at such lengths and tolerances has heretofore never been done before or even appreciated as being capable of accomplishment (despite a long-felt need in the market). This is remarkable especially due to the complexities, uncertainties and difficulties given the need for particular tolerances and lengths of products and equipment, together with the difficulties in handling the products and the precise nature required for creating the products and associated equipment. Until the present invention there has been a lack of appreciation of the

opportunity to utilize press-brake bending of steel for creating curtain wall segments. Press break bending has not been utilized for creating curtain wall products having lengths of 24 feet, or even greater than 20 feet. Applicant appreciates the difficulty in obtaining or maintaining required tolerances along the entire length of the segments, for instance, the need to have clean or complete folds or bends (which also avoid facture or cracking during forming) that run uniformly along the entire profile length of the lengthened steel products. An added benefit of using a press brake forming process under the invention is that the steel curtain wall segments may be customized to

accommodate different depths or other dimensions (while still maintaining desired tolerances and long lengths) without having to purchase or design new equipment or tooling.

[Para 53] A method aspect of the invention includes bending sheets of steel to make a variety of curtain wall mullion or transom segments and bonding a fiber reinforced polymer element to the structure such that the bonded element extends into a gap defined by two adjacent panels supported by the system. The method includes using a press brake and a set of tooling elements configured for use in conjunction with the press brake to bend a sheet of steel to form a first mullion segment. The bonded segment has a polymer

component. The method further includes using the press brake and at least some of the same tooling elements (or all of the same tooling elements) to bend a second sheet of steel to form a second mullion segment. The bonding process may include use of adhesives and curing agents and application of temperature or other bonding techniques to assure a rigid formation of the polymer component to the mullion or transom structure.

[Para 54] A further aspect of the invention includes a method of making a thermally insulating component configured to be bonded to a metal structure where the method comprises pultruding the component with a thermally insulating material through a pultrusion die having a profile perpendicular to the direction of pultrusion including a stem 80 extending in a first direction from a base 81 , first arm 1 44 and second arm 1 46 extending from opposite sided of base 81 and each extending perpendicu lar to the stem 80 and each defining a seal receiver 1 49 having an opening toward the first direction. In a further aspect the stem 80 includes a groove 82 configured to receive a fastener 39. Groove 82 may include a taper 84 to assist in receiving fastener 39. Groove 82 may be a continuous groove which spans the length of component 40, 1 40. It may be appreciated that groove 82 operates as a pilot hole to receive and contain fastener 39. In one aspect groove 82 is configured to securely receive a fastener such as a screw, including a #1 4 stainless steel HWH SMS screw. In a further aspect the component profile includes a first finger 1 41 a and a second finger 1 41 b each extending from base 81 opposite stem 80. Fingers 1 41 are configured to align with a curve of metal structure 26, and particularly configured to conform to opposing hands 1 32 , 1 32'. While other arrangements are available, in one aspect fingers 1 41 are symmetrically separated by a distance greater than the width "w" of stem 80. The thermally insulating component 40 may be pultruded from fiberglass material, and may also include reinforcing mats and an exterior surface may include a heat set resin coating. In fu rther aspects the invention includes the method of pultruding the various thermally insulating components 40, 1 40 (and

components 70, 1 70, 270) as described herein.

[Para 55] A further aspect of the invention includes a method of bonding a thermally insulating component to a metal structure. The metal may include steel, aluminum, alloys or other metals. In one aspect the method includes providing an adhesive between a pultruded fiberglass material and an outer side 1 25 of metal structure 26. In one aspect the fiberglass material is a polymer component 40 having fingers 1 40 that fit with respective hands 1 32 of the metal structure 26. In further aspects the method includes bonding the component 40 to the cover the entirety of the outer side 1 25 of metal structure 26.

[Para 56] It should be understood, of course, that the foregoing relates to exemplary embodiments of the invention and that modifications may be made without departing from the spirit and scope of the invention as set forth in the following claims. The scope of this invention also includes embodiments having different combinations of featu res and embodiments that do not include all of the above described features.

Claims

What is claimed is:

1 . A curtain wall mullion or transom for use on a curtain wall system, said mullion or transom comprising:

a metal mullion or transom structure having an outer side; and

a thermally insulating fiberglass reinforced polymer component rigidly bonded to said metal structure, said component including a stem configured to project into a space between a first panel and a second panel of a curtain wall, said component covering substantially an entirety of said outer side.

2. The mullion or transom of claim 1 where said thermally insulating component covers an entirety of said outer side.

3. The mullion or transom of claim 1 where said fiberglass reinforced polymer component is bonded with an adhesive to said outer side and spans a longitudinal length of said mullion or transom.

4. The mullion or transom of claim 1 where said fiberglass reinforced polymer component defines at least one seal receiver configured to receive a seal oriented to abut the first panel.

5. The mullion or transom of claim 4 where said fiberglass reinforced polymer component defines another seal receiver configured to receive a seal oriented to abut the second panel.

6. The mullion or transom of claim 1 where said metal structure includes opposing walls, said thermally insulating component includes fingers bonded to said opposing walls.

7. The mullion or transom of claim 1 further comprising a pressure plate configured to apply pressure to a seal associated with the first panel and to a seal associated with the second panel, said stem configured to receive a fastener inserted through said pressure plate.

8. The mullion or transom of claim 1 where said metal structure includes a steel segment and where said component is configured to support a weight of a panel of the curtain wall system.

9. A curtain wall mullion or transom for use on a curtain wall system, said mullion or transom comprising:

a metal mullion or transom structure having an outer side; and

a thermally insulating polymer component rigidly bonded to said metal structure at said outer side, said component including a least one seal receiver configured to

receive a seal oriented to abut a first panel of the curtain wall system.

1 0. The mullion or transom of claim 9 having a maximum longitudinal length and where said component includes a further seal receiver configured to receive a seal oriented to abut a second panel of the curtain wall system, said

component further comprising a pultruded fiberglass reinforced polymer spanning the maximum longitudinal length of said mullion or transom.

1 1 . The mullion or transom of claim 9 where said component includes a stem configured to project into a space between a first panel and a second panel of a curtain wall.

1 2. The mullion or transom of claim 1 1 where said stem includes a groove configured to receive a fastener.

1 3. The mullion or transom of claim 1 2 further including a gasket positioned inside said groove, said gasket extending outward from said groove opposite said mullion or transom.

1 4. The mullion or transom of claim 9 where said component covers an entirety of said outer side.

1 5. A curtain wall mullion or transom for use on a curtain wall system, said mullion or transom comprising:

a metal mullion or transom structure having a first metal segment and second metal segment; a first component made of thermally insulating material and bonded to an outer side of said first segment and a second component made of thermally insulating material and bonded to an outer side of said second segment, said first component isolating said outer side of said first segment from

communication with a space between a first panel and a second panel of a curtain wall.

1 6. The curtain wall mullion or transom of claim 1 5 where said component includes fiberglass and defines a seal receiver configured to receive a seal positioned between the first panel of the curtain wall system and said

component.

1 7. The curtain wall mullion or transom of claim 1 5 where said component is configured to support a weight of a panel of the curtain wall system.

1 8. A curtain wall system comprising:

a cell including a first mullion, a second mullion, a first transom and a second transom, said first transom including a metal transom structure having an outer side and having a pu ltruded fiberglass reinforced polymer rigidly bonded to said outer side, said fiberglass component covering an entirety of said outer side; and

a panel secured to said cell, said fiberglass component including a first seal receiver configured to receive a seal to be positioned between said component and said panel.

1 9. The system of claim 1 8 where said fiberglass component has a length equal to a length of said transom and comprises a stem configured to support a weight of said panel.

20. The system of claim 1 9 where said stem projects into a space defined by said panel and another panel.

21 . The mullion or transom of claim 9 where said component is bonded to said metal structure by adhesion with an adhesive.

22. The mullion or transom of claim 21 where said component comprises a pultruded fiberglass reinforced polymer and includes an arm extending from a stem of said component, said stem configured to project into a space between a first panel and a second panel of a curtain wall, said arm defining said at least one seal receiver, said at least one seal receiver defining a cavity in which a seal is receivable.

23. A curtain wall mullion or transom for use on a curtain wall system, said mullion or transom comprising:

a metal mullion or transom structure having an outer side, said outer side defining an outer face; and

a thermally insulating component comprising a fiberglass reinforced polymer rigidly bonded to said metal structure at said outer face of said outer side, said component bonded to said metal structure by adhesion with an adhesive, said component including an arm extending from a stem, said stem configured to project into a space between a first panel and a second panel of a curtain wall and past a panel frame of the first panel, said arm defining at least one cavity oriented distally from said stem and in which a seal is receivable.

24. The curtain wall system of claim 1 8 where said pultruded fiberglass reinforced polymer supports a weight of said panel.

25. The curtain wall system of claim 1 8 where said pultruded fiberglass reinforced polymer is the sole structural material rigidly connected to said transom and extending between said panel and another panel.

26. The curtain wall system of claim 1 8 further comprising a setting block positioned between said fiberglass component and said panel.

27. The mullion or transom of claim 9 where said component is bonded to said metal structure with an adhesive positioned between said component and an outermost surface of said outer side.

28. The mullion or transom of claim 9 where said component comprises a pultruded fiberglass reinforced polymer.

29. The mullion or transom of claim 9 where said component includes at least one material selected from the group of a fiberglass roving or a fiberglass mat.