Patent Application
20130294814
The present invention relates generally to the mounting of framed photovoltaic modules atop roofs or other structures, and more specifically to a friction locking retainer system and method for retaining photovoltaic modules to a mounting system, such as a self-aligning mounting system disposed upon rooftops or other surfaces.
With growing energy costs alternative energy sources are increasingly sought. This trend is present in both the commercial and residential environments. Solar energy has long been recognized as a possible green energy source for both the heating of water and the generation of electricity.
For energy production, photovoltaic cells grouped together as panels or modules are a common option. With commercial rooftops generally being substantially flat, installation issues are generally focused on doing minimum harm to the roof to prevent leaks, taking care not to overload or stress the roof, etc. Moreover, compared to residential homes, the flat roofs of most commercial installations are generally simple.
With the growing increase in residential photovoltaic module installation flat roofs are far less common Indeed, for most single-family homes, the roof is pitched. While this presents a potential benefit for aligning photovoltaic modules at a beneficial angle for incidence of sunlight, it also presents additional challenges for the installation of the photovoltaic module or modules.
Not only does the mounting system serve to safeguard the photovoltaic modules from force vectors due to wind, rain, snow, hail and other element of weather, but the mounting system generally is desired to be as aesthetic and unobtrusive as possible. In general this means the mounting system fits beneath the photovoltaic modules. Although more track homes are being built as construction issues are simplified for builders, there are still enough variations that each roof is substantially unique.
Typically therefore a rack mounting system is laid out and assembled piecemeal with periodic alignment checks, chalk lines and multiple measurements made in an effort to maximize usable roof space in a safe and aesthetically pleasing manner. As the mounting system is physically anchored to the pitched roof, multiple holes are introduced to the roof during installation, and this can be an issue with respect to future weather proofing and water proofing.
Each spot selected for anchoring may or may not seat itself well against the roofing material. Further, in some installations the anchoring process may disrupt the roofing tiles or shingles such that despite whatever anchoring hole is made, the roofing material itself may be damaged and no longer weather or more specifically water proof.
In addition, as traditional mounting systems are assembled piecemeal on the spot, the installer must not only hold, position and assemble the components of the mounting system, but he or she must also hold the nuts, bolts, clamps, brackets, connectors, drill, glue and other various tools and assembly elements. As the roof is typically pitched, to drop an element is to likely see it fall to the ground—a distance that may vary from a few feet to tens of feet.
When an item is dropped, it is frequently human nature to reach for the dropping item, which on a roof can present a significant safety hazard. The lack, loss or misplacement of a single component can significantly frustrate the entire installation process, adding to labor costs and overall time.
Add to this that local weather conditions change frequently and installers may be called upon to install, repair or upgrade an installation of photovoltaic modules in a variety of conditions, including wind, rain, frost and icing and issues of a pitched roof and multiple separate elements for installation can become a safety concern.
Moreover, a typical residential photovoltaic module system installation can easily take an entire day per kilowatt, subject the installer or installers to multiple trips up to and down from the roof, require careful measuring and re-measuring, mounting and remounting, changing conditions in footing, as well as potentially damaging the weather proofing integrity of the roof itself.
Hence there is a need for a method and system that is capable of overcoming one or more of the above identified challenges.
This invention solves the problems of the prior art by providing novel systems and methods for establishing a friction locking retainer for a mounting system, such as a self-aligning mounting system, for mounting photovoltaic modules on a surface.
In particular, and by way of example only, according to one embodiment of the present invention, provided is a self-aligning system for mounting at least one photovoltaic module to a surface, including: a plurality of rails, each rail having a plurality of slideably attached friction locking retainers, and a plurality of anchors with fasteners extending opposite from friction locking retainers; a collapsible separator coupled between the rails and structured and arranged to align the rails to each other at a pre-defined separation distance; and each friction locking retainer structured and arranged to laterally slide along a portion of each rail and remain as positioned by a user, each friction locking retainer further structured and arranged to grip and permit adjustment of at least one photovoltaic module during mounting.
In yet another embodiment, provided is a self-aligning system for mounting at least one photovoltaic module to a surface, including: a first rail having a plurality of friction locking retainers slideably attached to a first side of the first rail, and a plurality of anchors with fasteners extending opposite from the first side of the first rail; a second rail having a plurality of friction locking retainers slideably attached to a first side of the second rail, and a plurality of anchors with fasteners extending opposite from the first side of the second rail; a collapsible separator coupled between the first rail and the second rail and structured and arranged to align the first rail and the second rail to each other at a pre-defined separation distance; and each friction locking retainer structured and arranged to laterally slide along a portion of the first side of each rail and remain as positioned by a user, each friction locking retainer further structured and arranged to grip and permit adjustment of at least one photovoltaic module during mounting.
Further, in yet another embodiment provided is a self-aligning system for mounting at least one photovoltaic module to a surface, including: at least two mounting means for mounting at least one photovoltaic module; a collapsible alignment means for aligning the mounting means to one another at a pre-defined separation distance; an anchoring means for anchoring the mounting means to a surface; and a friction locking means permitting user adjustment in positioning along the mounting means and holding at least one photovoltaic module while permitting alignment of the photovoltaic module upon the mounting means.
Yet further, in another embodiment, provided is a method for mounting at least one photovoltaic module to a surface, the method including: providing a self-aligning mount having: a first rail having a plurality of friction locking retainers slideably attached to a first side of the first rail, and a plurality of anchors with fasteners extending opposite from the first side of the first rail; a second rail having a plurality of friction locking retainers slideably attached to a first side of the second rail, and a plurality of anchors with fasteners extending opposite from the first side of the second rail; a collapsible separator coupled between the first rail and the second rail and structured and arranged to align the first rail and the second rail to each other at a pre-defined separation distance; and each friction locking retainer structured and arranged to laterally slide along a portion of the first side and remain as positioned by a user, each friction locking retainer further structured and arranged to grip and permit adjustment of at least one photovoltaic module during mounting; disposing the first rail upon a roof and aligning at least one anchor of the first rail to a roof rafter and affixing the aligned anchor to the rafter by the fastener; expanding the collapsible separator to align and displace the second rail from the first rail by the pre-defined distance; selecting at least one anchor of the second rail and aligning the selected anchor to a roof rafter and affixing the aligned anchor of the second rail to the rafter by the fastener; placing a first edge of a first photovoltaic member within a first friction locking retainer of the first rail and a corresponding first friction locking retainer of the second rail; adjusting, if necessary, the alignment of the photovoltaic member; and securing the remaining anchors to rafters and securing the first friction locking retainers to bind the first edge of the first photovoltaic member.
Further still, in yet another embodiment, provided is an anchor for anchoring at least a portion of a self-aligning mounting system for photovoltaic modules to a surface including: a ridged supporter having a predetermined length structured and arranged to permit vertical height attachment and adjustment of at least a portion of a photovoltaic anchoring rack; and a base, coupled to the ridged supporter, the base structured and arranged to affix the base to a surface with a fastener, the base having an underside having a water sealing material disposed thereon and structured and arranged to form a generally waterproof seal when the base is affixed by the fastener to the surface.
For yet another embodiment, provided is an anchor for anchoring at least a portion of a self-aligning mounting system for photovoltaic modules to a surface including: a ridged supporter having a predetermined length structured and arranged to permit vertical height attachment and adjustment of at least a portion of a photovoltaic anchoring rack; and a base, coupled to the ridged supporter, the base structured and arranged to affix the base to a surface with a fastener, the base having an underside having at least one gripper structured and arranged to grip into the surface when the base is affixed by the fastener to the surface.
And yet for another embodiment, provided is an anchor for anchoring at least a portion of a self-aligning mounting system for photovoltaic modules to a surface including: a ridged supporter having a predetermined length structured and arranged to permit vertical height attachment and adjustment of at least a portion of a photovoltaic anchoring rack; and a base, coupled to and extending generally perpendicularly from the ridged supporter along a union having a weep notch disposed at least partially therein, the weep notch structured and arranged to direct water away from the anchor when the base is affixed to a surface with a fastener.
In yet another embodiment, provided is an anchor for anchoring at least a portion of a self-aligning mounting system for photovoltaic modules to a surface including: a first arm having a longitudinal axis between a first end and a second end; an elongated aperture through the first arm and about the longitudinal axis disposed proximate to the first end and extending towards the second end; a second arm extending from the second end generally perpendicularly to the first arm, the second arm having first side and a second side, and a first opening generally parallel to the first arm between the first side and the second side; and a water sealing material disposed upon the second side.
Further, in yet another embodiment, provided is a friction locking retainer for a self-aligning system of mounting at least one photovoltaic module having a thickness to a surface, including: a clamp having a central portion defined by at least one generally vertical wall having a distal end with a flange transverse to the wall and extending away from the central portion, the central portion further having a first opening; a first elastomer element disposed below the first opening opposite from the central portion, the elastomer element having a central passage aligned to the first opening; a bolt having a head section and a threaded section, the bolt disposed to pass through the first opening and the central passage of the elastomer element; and a nut disposed about the threaded section of the bolt extending from the central passage.
And further, in another embodiment, provided is a friction locking retainer for a self-aligning system of mounting at least one photovoltaic module having a thickness to a surface, including: a clamp having a central portion defined by a generally annular generally vertical wall having a distal end with a generally circular flange transverse to the annular wall and extending away from the central portion, the central portion further having a first opening; a first elastomer element disposed below the first opening opposite from the central portion, the elastomer element having a central passage aligned to the first; a bolt having a head section and a threaded section, the bolt disposed to pass through the first opening and the central passage of the elastomer element; and a nut disposed about the threaded section of the bolt extending from the central passage.
Further still, in another embodiment, provided is a friction locking retainer for a self-aligning system of mounting at least one photovoltaic module having a thickness to a surface, including: a gripper structured and arranged to grip at least a portion of a photovoltaic module; a compressible positioner structured and arranged to position the gripper at a predetermined height to receive a photovoltaic module; and an attacher structured and arranged to hold the gripper and positioner and permit friction locking of the positioner in an elongated aperture of a rail for mounting photovoltaic modules.
Further still, in yet another embodiment, provided is a removable water cap to cap a fastener retaining a self-aligning system of mounting photovoltaic modules to a surface, including: a base having a first end structured and arranged to fit between at least two roof shingles; and a second end opposite from the first end, the second end structured and arranged to receive and generally seal the fastener, and permit an undersurface of the base to be generally in consistent contact with at least one underlying shingle.
Yet still, in another embodiment, provided is a removable water cap to cap a fastener retaining a self-aligning system of mounting photovoltaic modules to a surface, including: a base having a first end and opposite thereto a second end, the base generally defining a plane; the first end structured and arranged to fit between at least two roof shingles; and the second end structured and arranged to provide an enclosure having generally two sides, a top and front formed in the second end and rising above the plane, the enclosure having an opening opposite from the front and disposed proximate a distal end of the second end and at least one bendable tab generally normal to the first plane and extending away from the opening.
And further, in yet another embodiment, provided is a removable water cap to cap a fastener retaining a self-aligning system of mounting photovoltaic modules to a surface, including: a means for binding between at least two roof shingles; an enclosing means for enclosing at least part of a fastener; an attaching means for removably attaching the removable water cap to an anchor secured by the fastener; and a water redirecting means for directing water away from the enclosing means.
At least one method and system for establishing a friction locking retainer for a mounting system, such as a self-aligning mounting system, for mounting photovoltaic modules on a surface will be described, by way of example in the detailed description below with particular reference to the accompanying drawings, and:
Before proceeding with the detailed description, it is to be appreciated that the present teaching is by way of example only, not by limitation. The concepts herein are not limited to use or application with a specific system or method for a friction locking retainer system for a mounting system, such as a self-aligning mounting system for mounting photovoltaic modules. Thus although the instrumentalities described herein are for the convenience of explanation shown and described with respect to exemplary embodiments, it will be understood and appreciated that the principles herein may be applied equally in other types of systems and methods involving installing and/or mounting photovoltaic modules.
Turning now to the drawings, and more specifically
To facilitate the description of SAMS 100, the orientations of SAMS 100 and associated components as presented in the figures are referenced to the coordinate system with three axis orthogonal to one another as shown in
As embodiments of the SAMS are likely to be used for mounting PV Modules 102 to commercial and residential roofs, in general SAMS 100 is therefore intended to be mounted upon shingles 106, such as asphalt, composite, tile, or other shingle material, which in turn are supported by regularly spaced supports, such as wood rafters 108, of which rafters 108A-108C are exemplary, previously provided at regular standard spacing such as 12″ on center, 16″ on center, or 24″ on center.
For at least one embodiment, SAMS 100 is provided with substantially all mounting hardware being pre-positioned, or at least prepared for pre-positioning before being mounted upon a surface 104. Further, for at least one embodiment, all mounting hardware is pre-established for a 7/16th “hex” socket. For at least one alternative embodiment, a proprietary socket may be employed to reduce the chance of theft of system components.
Commonality of mounting hardware also reduced the need for an installer to change drive heads—eliminating yet another opportunity for drop. As such, the installing party is freed from the need of on roof assembly of small parts and components. By removing this element from the assembly process, the chance for dropping or the loss of small components and parts, risk to the installer and the likelihood of repeated trips to and from the roof location are greatly minimized.
As shown, SAMS 100 generally includes a plurality of rails, and more specifically, at least a first rail 110 having a plurality of friction locking retainers 112 attached to a first side 114 of the first rail 110, and a plurality of anchors 116 extending opposite from the first side 114. SAMS 100 also includes a second rail 118, and in at least one embodiment, the second rail 118 is substantially the same as the first rail 110. Moreover the second rail 118 has a plurality of friction locking retainers 112 attached to a first side 114′, and a plurality of anchors 116 extending opposite from the first side 114′.
SAMS 100 further includes a collapsible separator 120 coupled between the first rail 110 and the second rail 118 and structured and arranged to align the first rail 110 and the second rail 118 to each other at a pre-defined separation distance. In varying embodiments, and as is further described below, the collapsible separator 120 may be provided by one or more cross bars, telescoping rods/cross bars, cables of predefined length, a scissoring body or other appropriate device that may be adapted to space apart and align the first and second rails 110, 118. For at least one embodiment, the collapsible separator 120 is provided by at least two crossbars, specifically cross bar 122 and cross bar 124 as further described below.
As is shown in
The components of SAMS 100 are typically constructed from weather durable materials, such as but not limited to aluminum, stainless steel, galvanized steel, copper, brass, plastic, polycarbonate and other such materials. Indeed for at least one embodiment the primary components of SAMS 100, e.g., the first rail 110 and the second rail 118 are electrically conductive and therefore suitable for grounding the photovoltaic modules 102 as well as the overall SAMS 100 installation.
Moreover, to summarize, for at least one embodiment SAMS 100 generally includes a plurality of rails (e.g., rails 110, 118), each having a plurality of slideably attached friction locking retainers 112, and a plurality of anchors 116 with fasteners extending opposite from friction locking retainers 112. A collapsible separator 120 is coupled between the rails and structured and arranged to rails to each other at a pre-defined separation distance; and each friction locking retainer 112 is structured and arranged to laterally slide along a portion of each rail and remain as positioned by a user. Each friction locking retainer 112 is further structured and arranged to grip and permit adjustment of at least one photovoltaic module 102 during mounting.
Rails and Crossbars
For at least one embodiment, the collapsible separator 120 is provided by one or more cross bars of which cross bars 122 and 124 are exemplary. Although in certain embodiments, the cross bars may be entirely removable, to reduce installation time, facilitate consistency of installations, and/or other purposes, for at least one embodiment the cross bars 122, 124 are structured and arranged to rotate between a first position of being generally parallel to the first and second rails 110, 118 (the collapsed position) and a second position of being generally normal to the first and second rails 110, 118 (the aligning position).
Moreover, as shown in
For the embodiment of SAMS 100 shown in
When the cross bars 200, 202 are in the collapsed position, SAMS 100 has generally the same overall length 204, but a vastly reduced width 220, such that in the collapsed position SAMS 100 occupies a second amount of space 222, shown generally by dotted rectangle that is significantly less than the first amount of space 208 by several orders of magnitude.
As
In addition,
Of course it is understood and appreciated that in varying embodiments the rotating point of attachment 228 may be on the second rail 118 and second end 234 may provide a hole to receive a pin provided by cross bar 202. Further, although braces 224 and 226 are shown between cross bars 200 and 202 and second rail 118, in varying embodiments braces may be between cross bars 202 and 202 and first rail 110.
In this embodiment, the rotating joints 216 at the second ends 218 can be disengaged from the second rail 118. Indeed, because these joints can be disengaged, for at least one alternative embodiment, it may be immaterial as to whether joints 216 permit rotation. Moreover, to simplify manufacturing purposes joints 212 and 216 may be substantially identical or they may be different.
As in
As shown in
Similarly second rail 118 provides a mount 418 rigidly coupled to the second rail 118 in vertical alignment and set to receive a joining pin 420 passing vertically through the mount 418 and corresponding apertures 422 in the second end 408 of cross bar 400. When joining pin 420 is installed, button spring 424 serves to lock joining pin 420 in place. It is understood and appreciated that the mount 418, joining pin 420 and apertures 422 are structured and arranged to permit rotation of cross bar 400 in a horizontal plane with minimal vertical deflection.
The second end 408 of cross bar 400 has a rotation stopper 426 which is structured and arranged to prevent further rotation when cross bar 400 is perpendicular to the second rail 118. For at least one embodiment, the rotation stopper 426 is a metal plate joined to the second end 408 of the cross bar 400 which will engage the metal side 428 of mount 418. Rotation stopper 426 may be used in addition to, or in place of braces 224, 226 as shown and described above.
Cross bar 124 as shown in
Returning to
Moreover, when collapsible separator 120 is deployed, the first rail 110 and second rail 118 are properly aligned to one another for support and anchoring of one or more photovoltaic panels 102 as is further described below. In addition, for at least one embodiment, once the rails have been aligned and anchored the collapsible separator 120 is removed and recycled in another SAMS 100.
As is further described below, each friction locking retainer 112 is structured and arranged to laterally slide along a portion of the first side 114, 114′ of each rail 110, 118 and remain as positioned by a user. Each friction locking retainer 112 is further structured and arranged to grip and permit adjustment of at least one photovoltaic module 102 during mounting.
In addition, each anchor 116 is structured and arranged to laterally slide along at least a portion of each rail 110, 118 and provide independent and adjustable vertical alignment so as to accommodate variation of elevation as may be encountered with surface 104.
In at least one embodiment, these slots 502 are provided with at least one large nut receiving aperture 504 that is integrally coupled to a nut retaining aperture 506. A nut binder 508, such as but not limited to a metal rail or ridge is established adjacent to the nut retaining aperture 506 so that a square nut may slide laterally adjacent to the nut retaining aperture 506, but not rotate. In other words when a bolt to which the nut is attached is rotated, the nut binder 508 prevents rotation and thus allows the bolt to be tightened or loosened against the nut.
As such, the friction locking retainer 112, further described below, is permitted lateral adjustment 510. For at least one embodiment the nut receiving aperture 504 is about 0.625″ square and the nut retaining aperture 506 is about 0.343″ in width and about 1.375″ in length thereby collectively providing about 2″ of lateral adjustment 510.
A plurality of slots 512 are also provided in the second surface 514, i.e., side surface, of rail 500, shown in
As such, the anchor 116, further described below, is permitted lateral adjustment 522. For at least one embodiment the nut receiving aperture 516 is about 0.625″ square and the nut retaining aperture 518 is about 0.343″ in width and about 7.875″ in length thereby collectively providing about 8.5″ of lateral adjustment 522 for each anchor 116. In addition, it should also be appreciated, especially with respect to
As shown in
For yet another embodiment, the nut retaining aperture 506 as shown in
In addition, as roof rafters are typically provided at regular standard spacing such as 12″ on center, 16″ on center, or 24″ on center, slots 512 are provided at interval spacing, e.g., 48″, such that with a sufficient amount of lateral adjustment, i.e., an embodiment of about 4″ or an embodiment of about 8″, rails 500 may be fabricated in advance with a high degree of likelihood that general standard spacing options can be easily accommodated, as well as typical variations in the general spacing as are known to occur with typical construction techniques.
For yet another embodiment, lateral adjustment of one or more friction locking retainers 112 one or more anchors 116 along the first rail 119 or the second rail 118 is achieved by using a channeled rail 600 as shown in
As shown in
As channel 602 runs the length of rail 600, one or more friction locking retainers 112 slideably disposed in connection with channel 602 are permitted generally unlimited lateral adjustment 606 along the first side 114, save of course for the friction locking retainers 112 contacting each other.
Rail 600 has at least one additional channel 608 provided generally normal to channel 602. As shown, for at least one embodiment channel 608 is disposed in the second side 610, which is generally normal to the first side 114. Channel 606 is structured and arranged to accept a slideable fastener for at least one anchor 116.
As channel 608 runs the length of rail 600, one or more anchors 116 slideably disposed in connection with the channel 608 are permitted generally unlimited lateral adjustment 612 along the second side 610, save of course for the anchors 116 contacting each other. As rafters 108 or other support structured below the mounting surface 104 are generally the targets for anchors 116, the generally unrestrained lateral adjustment 610 permitted by channeled rail 600 may be advantageous in situations where the spacing of rafters 108 is not as regular as otherwise desired.
With respect to rail 600 and specifically as shown in
As noted above, as roof rafters are typically provided at regular standard spacing such as 12″ on center, 16″ on center, or 24″ on center, for at least one embodiment, rail 600 provides indicator marks, not shown, to assist an installer in generally pre-placing the anchors 116 with respect to channel 606.
For at least one embedment, rail 600 is generally symmetrical, providing channels 608 and 608′ on either side. Further Rail 600 may also provide a symmetrical channel 602′ on the bottom, shown in dotted relief. Moreover, for at least one embodiment, rail 600 is generally “H” shaped. Moreover, for at least one embodiment, rail 600 provides symmetrical channels with respect to the top/bottom and side/side, the rail being a generally solid structure without intentionally enclosed hollow spaces.
In addition, for at least one embodiment, channel 602 is structured and arranged for a head section 1122 of a bolt 1120 shown in
Moreover, SAMS 100 self-aligns when the collapsible separators are deployed to ensure that the first and second rails 110, 118 are separated by a distance of at least the center section 702.
As different manufacturers provide photovoltaic modules 102 having different sizes, i.e., lengths and widths, the distance for separation of the rails can and does change in accordance with which photovoltaic modules 102 are being used. For at least one embodiment, the collapsible separator 120 provides multiple stops to permit the installer to select the separation distance appropriate for the photovoltaic modules 102 being installed. More specifically, for at least one embodiment the cross bars are telescoping elements.
In varying embodiments, not shown, SAMS 100 is provided for the mounting of one (1) photovoltaic panel 102, the mounting of two (2) photovoltaic panels 102, and the mounting of four (4) photovoltaic panels 102. Moreover, various configuration of SAMS 100 may be combined, such as a SAMS 100 for three (3) photovoltaic panels 102 and a SAMS 100 for two (2) photovoltaic panels 102, to accommodate variations in different installation environments.
Various configurations of SAMS 100 may also be used individually so as to accommodate variations in different installation environments. In other words, SAMS 100 may be configured for various numbers of photovoltaic panels 102 and may be used attached to one another or installed separately.
As is also shown in
For at least one embodiment, placer 706 is a “G” shaped band of metal. Specifically, placer 706 is structured and arranged to grasp the second rail 118 with a first end 708, and provide a catch at the second end 710 to receive and temporarily hold a photovoltaic module 102 as it is moved into position upon the SAMS 100 by an installer. Moreover, placer 706 has a pre-determined length so as to endure that the distal ends 704 of photovoltaic module 102 are properly aligned to the first rail 110 and second rail 118.
For yet another embodiment, placer 712 is an “S” shaped band of metal. Specifically, placer 712 is structured and arranged to grasp the second rail 118 with a first end 714, pass over the top of the second rail 118 to increase leverage, and provide a catch at the second end 712 to receive and temporarily hold a photovoltaic module 102 as it is moved into position upon the SAMS 100 by an Installer. Moreover, placer 712 has a pre-determined length so as to endure that the distal ends 704 of photovoltaic module 102 are properly aligned to the first rail 110 and second rail 118.
Anchor
As noted above, SAMS 100 is attached to a surface 104 such as a roof with the use of a plurality of anchors 116.
Anchor 116 has a ridged supporter 800 having a predetermined length 802 that is structured and arranged to permit vertical height adjustment of at least a portion of SAMS 100. Anchor 116 also has a base 804, extending generally perpendicularly from the ridged supporter 800, along a union. The base 804 is structured and arranged with a provided fastener 806 to affix the base 804 to a surface.
For at least one embodiment, the anchor 116 includes a weep notch 808 adjacent to the union. In other words the weep notch 808 is an angled or tapered groove disposed at least partially in the union. The weep notch 808 is structured and arranged to direct accumulated water or moisture towards either edge and thus avoid pooling along the union.
The base 804 has an underside 810. In at least one embodiment, this underside 810 has a water sealing material (shown as wavy lines 812) disposed thereon and structured and arranged to form a generally water tight seal when the base 804 is affixed by the fastener 806 to the surface.
For at least one embodiment the water sealing material 812 is a roofing mastic. Further the roofing mastic may be pre-selected as appropriate for different areas of the country. Moreover, it is understood and appreciated that as the anchor 116 is metal, as is the SAMS 100, and both are exposed upon a surface such as a roof, during at least a portion of the year the anchor will likely become warm such that the water sealing material may partially liquefy and further bond the anchor to the surface.
In yet another embodiment, the underside 810 has at least one gripper 814 structured and arranged to grip the surface when the base 804 is affixed by the fastener to the surface. In still yet another embodiment, the underside 810 has both the water sealing material 812 and at least one gripper 814.
Moreover, for at least one embodiment the gripper 814 is provided by one or more protrusions 816 extending from the underside 810 of the base 804. These protrusions 816 may be arranged in row, or one or more circles as shown, and/or randomly. Further, for at least one embodiment at least one protrusion 816 has a sharpened distal end.
As some installations of SAMS 100 may be upon surfaces covered with somewhat slick materials such as, but not limited to tile, the gripper 814, e.g. protrusions 816, may serve to assist in the installation process by providing the anchor 116 with at least some ability to hold to the surface before the fastener 806 is employed. Indeed the gripper 814 is intended to help bite the surface during installation and in so doing help the installer with positioning and aligning SAMS 100 upon the surface. When the fastener 806 is engaged, the grippers 814 serve to further couple the anchor 116 to the surface as they forcibly disposed into the surface.
As may be appreciated in
Further, for such an embodiment, the base 804 is a second arm 828 extending generally perpendicularly from the second end 824 of the first arm 818. The second arm 828 has a first side 830 and a second side 832 and at least a first opening 834 generally parallel to the first arm 818 between the first side 830 and a second side 832. For at least one embodiment, the second arm 828 has a length of about 4″, a width of about 2.75″, a thickness of about 0.25″ and the first opening 834 is a hole having a diameter of about 0.343″ disposed generally in the center of the second arm 828.
Moreover, for at least one embodiment the ridged supporter 800 and the base 804 are a section of “L” channel. As is also shown in
For at least one embodiment, such as where SAMS 100 is to be installed in a high wind environment, additional first openings 834 and fasteners 806 may be provided. In addition, these additional first openings 834 may be spaced and or angled so as to increase the holding force provided by fasteners 806 as they are disposed into a structural member, such as a rafter 108. And again, for at least one embodiment, fasteners 806 with a proprietary drive head may be employed.
For at least one embodiment, the fastener 806, i.e., bolt 836, is pre-positioned in the first opening 834 with a sacrificial material 842. More specifically, as shown the sacrificial material 842 is disposed about the threaded section 840 and the first opening 834. In varying embodiments, the sacrificial material 842 is selected from glue, mastic, foam, wax, or other such material.
Moreover, sacrificial material 842 is intended to temporarily hold the fastener 806 prior to installation, but will not impede the fastener in making contact with the base 804, or a water sealing washer 844 as may be employed between the head section 838 and the base 804. In at least one embodiment, the sacrificial material 842 is biodegradable.
As is also shown in
For anchor 900, the fastener 806 is shown to be a lag bolt with a head section 838 and a threaded section 840. In addition the water sealing washer 844 is shown disposed about the threaded section 840. In the middle illustration, the fastener 806 has been partially disposed in the first opening of the base 804 and temporarily affixed in place by the sacrificial material 842.
In the top right illustration, the fastener 806 is shown deployed through the first opening 834 as it would be to fasten the anchor 900 to a surface. As shown, the sacrificial material 842 is not impeding contact between the head section 838, the water sealing washer 844 and the base 804. Moreover, as the sacrificial material 842 has served its purpose of temporarily holding the fastener 806 and has now been washed, wiped, blown or otherwise removed.
In the bottom row is shown a similar progression of figures for a second embodiment of anchor 116, e.g. anchor 902, first illustrating at the far left the ridged supporter 800, the base 804, the weep notch 808, the water sealing material 812 upon the underside 810 of the base, the grippers 814 and the fastener 806 along with the sacrificial material 842 separate from the base 804.
In addition, the raised barrier 846 about the first opening 834 is also shown. For anchor 902, the fastener 806 is also shown to be a lag bolt with a head section 838 and a threaded section 840. In addition the water sealing washer 844 is shown disposed about the threaded section 840.
In the middle illustration, the fastener 806 has been partially disposed in the first opening of the base 804 and temporarily affixed in place by the sacrificial material 842. For anchor 902, the raised barrier 846 serves to assist with holding the sacrificial material 842 properly in place and may further serve to protect it until such time as the fastener 806 is deployed.
In the bottom right illustration, the fastener 806 is shown deployed through the first opening 834 as it would be to fasten the anchor 900 to a surface. The head section 838 is now recessed behind the raised barrier 846 and therefore further protected from water or moisture moving across the base 804.
As in the top row, the sacrificial material 842 is not impeding contact between the head section 838, the water sealing washer 844 and the base 804. Moreover, as the sacrificial material 842 has served its purpose of temporarily holding the fastener 806 and has now been washed, wiped, blown or otherwise removed.
Of course for an embodiment of anchor 116 wherein the sacrificial material 842 is not employed, or where for a particular installation it is desired to pre-drill a hole to receive the fastener 806, the installer simply provides the fastener 806 through the first opening 834 at the time of installation.
As may be appreciated in
It should be noted that even when anchor 900′ is in this upper position, the first end 822 is below the top of friction locking retainer 112. Such a configuration reduces, if not eliminates, the possibility that an anchor 116 might inadvertently contact the underside of a photovoltaic module 102 (not shown, see
To summarize, with respect to
For yet another embodiment is an anchor 116 for anchoring at least a portion of SAMS 100 to a surface 104. This anchor 116 includes a ridged supporter 800 having a predetermined length structured and arranged to permit vertical height attachment and adjustment of at least a portion of SAMS 100. The anchor 116 has a base 804 coupled to the ridged supporter 800, the base 804 structured and arranged to affix the base 804 to a surface 104 with a fastener 806, the base 804 having an underside 810 having at least one gripper 814 structured and arranged to grip into the surface 104 when the base 804 is affixed by the fastener 806 to the surface 104.
And for another embodiment is an anchor 116 for anchoring at least a portion of SAMS 100 to a surface 104. This anchor 116 includes a ridged supporter 800 having a predetermined length structured and arranged to permit vertical height attachment and adjustment of at least a portion of SAMS 100. The anchor 116 has a base 804 coupled to and extending generally perpendicularly from the ridged supporter 800 along a union having a weep notch 808 disposed at least partially therein, the weep notch 808 structured and arranged to direct water away from the anchor 116 when the base 804 is affixed to a surface 104 with a fastener 806.
Friction Locking Retainer
As shown in
Further, the friction locking retainer 112 is structured to provide enough frictional hold upon an photovoltaic module 102 to permit adjustment and fine tune alignment of the photovoltaic module 102 prior to being tightened for a long lasting hold. Further still, the friction locking retainer 112 is structured to provide enough frictional hold upon its supporting rail (either the first rail 110 or the second rail 118) to permit adjustment in placement by an installer and remain in place while a photovoltaic module 102 is set into place.
As shown and described most easily with respect to the exploded view adjacent to the assembled view, friction locking retainer 1100 has a clamp 1102, having a central portion 1104 defined by at least one generally vertical wall 1106. The vertical wall 1106 has a distal end 1108 with a flange 1110 transverse to the vertical wall 1106 and extending away from the central portion 1104. The central portion 1104 also has a first opening 1112.
Friction locking retainer 1100 also has a first elastomer element 1114 disposed below the first opening 1112 opposite from the central portion 1104. The elastomer element 1114 has a central passage 1116 that is aligned to the first opening 1112. Washers 1118 may be disposed at either end of the first elastomer element 1114.
A bolt 1120 having a head section 1122 and a threaded section 1124 is disposed to pass through the first opening 1112 of the clamp 1102 and the central passage 1116 of the elastomer element 1114. A nut 1126 is disposed about the threaded section of the bolt 1120 extending from the central passage 1116.
It should be understood that the rising vertical wall 1106 and associated flange 1110 may take a variety of forms. For example and not by way of limitation, in at one embodiment, there is a single generally vertical, generally flat wall 1106 and associated flange 1110 located to one side of the central portion 1104.
In yet another embodiment, there are two generally vertical, generally parallel walls 1106, 1128 on either side of the central portion 1104—the first vertical wall 1106 having a first flange 1110 and the second vertical wall 1128 having a second flange 1130.
For yet another embodiment, the vertical wall 1106 is a generally annular vertical wall 1202 as shown with respect to friction locking retainer 1200 in
For yet another embodiment, the clamp 1102 is a structure such as a washer, shown in
With respect to both friction locking retainer 1100 and 1200, the annular wall section 1106/1202 provides a structural brace against which the photovoltaic panels 102 are seated, see
As shown, the one or more spacers 1806 are disposed between the clamp 1102 and first elastomer element 1114, and are structured and arranged to receive bolt 1120, passing through the first opening 1112 of the clamp 1102 and the central passage 1116 of the elastomer element 1114. The other components of friction locking retainer 1800 are substantially the same as those of friction locking retainer 1100 in
Indeed, with respect to
As noted above, at least one advantageous feature of SAMS 100 is the intended ability to provide mounting hardware in generally pre-positioned so as to reduce in-field assembly time. As is also noted above, different manufacturers may provide photovoltaic panels 102 having different physical dimensions, i.e. different lengths and widths. As such the spacing between photovoltaic panels 102, and more specifically the spacing between friction locking retainers 112 can vary from one installation to another based on a different selection of photovoltaic modules for installation. For example, Manufacturer A may provide photovoltaic panels having a width of X, and Manufacturer B may provide photovoltaic panels having a width of Y, wherein Y is hypothetically 7 mm less than X. As between two or three photovoltaic panels this 7 mm difference may not be significant, but for installations where multiple SAMS 100 are installed in a continuous row, this 7 mm difference in spacing can result in significant spacing creep.
As noted above, the friction locking retainer 112 are structured and arranged to permit lateral adjustment along first side 114, 114′ of each rail 110, 118. For at least one embodiment, this lateral adjustment is achieved with a plurality of slots 502.
For at least one alternative embodiment, lateral adjustment may also be at least partially achieved by providing friction locking retainers 112 having different geometric shapes as previously suggested, and more specifically different geometric shapes providing different cross distance dimensions, such as length and width. For at least one embodiment, friction locking retainers 112 have a generally rectangular clamp with a length that is different from a width.
As it is an element of the friction locking retainer 112 to provide both clamping of, and spacing between photovoltaic panels 102, the central portion 1104 formed by the vertical walls 1106, 1202 for at least one embodiment will also have correspondingly different length and width dimensions. For the stacked configuration show in
Moreover,
As shown in
As shown in
In addition, although
For any of these variations, and most specifically friction locking retainer 1100 or 1200, in accordance with at least one embodiment, the clamp 1102 is provided by forming 14 gauge metal, such as stainless steel, so that the clamp 1102 has a height of about 0.553″, a length of about 1.45″ across the central portion 1104, and an overall length of not more than about 2.311″. The first opening 1112 is a circular hole having a diameter of about 0.343″. For the friction locking retainer 1800, in accordance with at least one embodiment, the clamp 1102 is provided by forming 14 gauge metal, such as stainless steel, so that the clamp 1102 has a height of about 0.0747″ and an overall length of not more than about 2.311″. The first opening 1112 is a circular hole having a diameter of about 0.343″.
For at least one embodiment, at least one washer 1132 is disposed between the head section 1122 and the central portion 1104. Additional washers (not shown) may also be disposed between the head section 1122 and the central portion 1104, the elastomer element 1114 and the clamp 1102 and/or the elastomer element 1114 and the nut 1126.
As is also shown in
In addition, as these teeth 1134 may cut slightly into the edge of the of the photovoltaic module 102 and therefore penetrate an outer coating of paint or other material, where the frame of the photovoltaic module 102 is metal the teeth 1134 will improve the general electrical conductivity, and more specifically the electrical grounding between the photovoltaic module 102 and the SAMS 100.
For at least one embodiment the first elastomer element 1114 is a spring. For yet another embodiment the elastomer element is a non-metallic element, such as but not limited to, rubber, foam or silicon.
The first elastomer element 1114 has a predetermined length 1136 about the thickness of the photovoltaic module 102. As the clamp 1102 has at least one vertical wall 1106 (
Moreover, in general the predetermined length 1136 may typically be from about half the thickness of the photovoltaic module 102 to the about the thickness of the photovoltaic module 102. For at least one embodiment the first elastomer element 1114 has a predetermined length 1136 of about three-quarters the thickness of the photovoltaic module 102.
Further the first elastomer element 1114 has a sidewall thickness 1138 selected to be about the distance from the bolt 1120 to the at least one vertical wall 1106, 1202. Moreover, in accordance with at least one embodiment the elastomer element provides generally continuous support to the underside of the central portion 1104 of the clamp 1102.
The first elastomer element 1114 has resilient properties. It can be compressed and it's expansive force when compressed assists in creating the friction force to hold the friction locking retainer 1100, 1200 in the location selected by the installer.
For yet another optional embodiment, a second elastomer element 1140 (shown in dotted relief) may be disposed between the head section 1122 and the central portion 1104 of the clamp 1102. This second elastomer element 1140 may be a coiled spring, and in at least one embodiment permits generally vertical displacement of the clamp 1102 by about one-half inch. In addition, this second elastomer element imparts a biasing force of about 3 pounds.
At this point, the first elastomer element 1114 is no longer needed. Indeed it's degradation over time through exposure to the elements is of no significance to the structural integrity of the mounted photovoltaic module 102. If the optional second elastomer element 1140 is provided, one or more additional washers or other elements may also be provided such that when compressed by firmly securing the bolt 1120, the second elastomer element 1140 is recessed and any degradation of the second elastomer element 1140 will not adversely affect the structural integrity of the mounted photovoltaic module 102.
To summarize, with respect to
For another embodiment, provided is a friction locking retainer 112 for SAMS 100, and more specifically friction locking retainer 1200 having a clamp 1102 having a central portion 1104 defined a generally annular generally vertical wall 1202 having a distal end 1204 with a generally circular flange 1206 transverse to the annular wall 1202 and extending away from the central portion 1104. The central portion 1104 also has a first opening 1112. A first elastomer element 1114 is disposed below the first opening 1112 opposite from the central portion 1104, the elastomer element 1114 having a central passage 1116 aligned to the first opening 1112. A bolt 1120 having a head section 1122 and a threaded section 1124 is disposed to pass through the first opening 1112 and the central passage 1116 of the elastomer element 1114 and a nut 1126 is disposed about the threaded section 1124 of the bolt 1120 extending from the central passage 1116.
For yet another embodiment, provided is a friction locking retainer 112 for SAMS 100 having a gripper (e.g. clamp 1102) structured and arranged to grip at least a portion of a photovoltaic module 102. A compressible positioner (first elastomer element 1114) is structured and arranged to position the gripper (e.g. clamp 1102) at a predetermined height to receive a photovoltaic module 100. An attacher (e.g. bolt 1120 and nut 1126) is structured and arranged to hold the gripper and positioner and permit friction locking of the positioner 1114 in an elongated aperture of a rail (e.g. first rail 110 or second rail 118) for mounting photovoltaic modules 102.
Removable Water Cap
Returning to
The application of a removable water cap 128 structured and arranged to cap the fastener portion of the anchor 116 may advantageously reduce if not eliminate the opportunity or water to reach the points of penetration.
More specifically, with respect to
Moreover the base 1300 may be generally viewed as defining a plane 1306. The first end 1302 is substantially flat and therefore may be disposed between two shingles 106 by an installer, as shown below with respect to
The enclosure 1308 has an opening 1318 opposite from the front 1316, and disposed proximate to the distal end 1320 of the second end 1304. In addition, for at least one embodiment the enclosure 1308 has at least one bendable tab 1322 normal to the plane 1306 and initially extending away from the opening 1318. As shown, for at least one embodiment there is a second bendable tab 1324 opposite from the first bendable tab 1322, such that each is on either side of the opening 1318 of the enclosure 1308.
For at least one embodiment, the front 1316 is angled relative to the longitudinal axis 1326 of the base 1300. In addition, for yet another embodiment the front 1316 is angled relative to the latitudinal axis 1328 of the base 1300. Moreover, in varying embodiments, the front 1316 may be square of angled in at least one or two directions so as to deflect water away from the removable water cap 128. In addition, for at least one embodiment the base 1300 has a water sealing material 1330 disposed on the underside 1332 and structured and arranged to form a generally water tight seal when the first end 1302 is disposed between shingles 106.
In addition, as is appreciated most easily with respect to
Moreover, first side area 1334 and second side area 1336 provide continued contact with at least one shingle 106 on either side of the enclosure 1308 when water cap 128 is installed. For embodiments of water cap 128 having water sealing material 1330 disposed on the underside 1332, the first side area 1334 and the second side area 1336 further establish water tight seals the sides of the anchor 116.
To further appreciate the arrangement of elements providing the removable water cap 128,
As set forth in the description of
As shown in
For at least one embodiment, bendable tab 1324 has an aperture 1402 which has been pre-positioned to align to a hole (not shown) in the ridged supporter 800 of anchor 116/900/902 so that a fastener, such as a sheet metal screw, may further affix the removable water cap 1400 to the anchor 116.
The embodiment of removable water cap 1420 shown in
As is shown in
In
The surface 104 is a roof, covered with a plurality of overlapping shingles 106, of which shingles 106A, 106B, 106C and 106D are exemplary. These shingles 106A-D have been affixed in place by a plurality of nails 1500.
With respect to the shingles 106, typically at least one nail 1500 is driven through the tail portion 1502 of the shingle 106. As the shingles 106 overlap, the front portion 1504 of the upper shingle, e.g. shingle 106C, overlaps the tail portion 1502 of the lower shingle, e.g. shingle 106B, and covers the nail 1500.
In many instances, such as with asphalt or composite shingles, at least one layer of sealing mastic is pre-applied to at least the underside of each shingle 106 proximate to where the nail 1500 is likely to be placed as well as the leading edge of each shingle 106. These areas of sealing mastic are typically applied by the shingle manufacturer. As the shingles warm in the sun this layer of mastic facilitates bonding between the shingles and helps to achieve a greater water tight seal for the structure as provided at least in part by the shingles 106.
The anchor 116 is shown disposed upon the front portion 1504 of shingle 106BC. The fastener 806 of anchor 116 is shown to have engaged a roof rafter 108 so as to provide firm support for SAMS 100. The pitch of the roof in
In this orientation, the water redirection properties of the weep notch 808 may also be further appreciated. In addition, the grippers 814 of the base 804 are shown partially disposed into a shingle 106B and the water sealing material 812 is firmly disposed between the base 804 and the shingle 106B.
As may be appreciated with reference to
In
In addition, as is clearly shown in
As is further discussed below, the base 1300 is constructed from a generally stiff, but also pliable material. More specifically, the base 1300 is formed from a material selected from the group of, but not exclusively limited to, aluminum, plastic, polycarbonate, copper, lead, and rubber.
For at least one embedment, the base 1300 is formed from aluminum. Further the aluminum is selected to have a thickness permitting manual cutting by an installer in the field. The aluminum is also stiff enough to be placed between shingles, but compliant enough to bend subtly and conform to the shingle contour as shown in
Moreover, for at least one embodiment the base 1300 is formed from anodized aluminum sheet having a thickness of 0.050 inches thick, the base 1300 having a length of about 14 inches and a width of about 6 inches. For such an embodiment, the enclosure 1308 has a height of about 0.75 inches, a width of about 2.875 inches and a length of about 4.0 inches.
To summarize, with respect to
For another embodiment, provided is a removable water cap 128 to cap a fastener 806 retaining SAMS 100 to a surface 104 having a base 1300 having a first end 1302 and opposite thereto a second end 1304, the base generally defining a plane 1306; the first end 1302 structured and arranged to fit between at least two roof shingles 106. The removable water cap 128 has an enclosure 1308 having generally two sides 1310 & 1312, a top 1314 and front 1316 formed in the second end 1304 and rising above the plane 1306. The enclosure 1308 has an opening 1318 opposite from the front 1316 and disposed proximate a distal end 1320 of the second end 1304 and at least one bendable tab 1322 generally normal to the first plane 1306 and extending away from the opening 1318.
In general, method 1700 commences with receiving at least one SAMS 100 as described above in the initial collapsed position, block 1702. For at least one embodiment SAMS 100 is provided with substantially all necessary mounting hardware already attached. If one or more elements have come loose during shipment to the installation site they can be easily reattached by the installer.
Method 1700 continues by determining the location of at least one rafter 108 (1st rafter) for a corner anchor 116 of SAMS 100, block 1704. For at least one embodiment, this first anchor is selected to be the top left anchor 116 of SAMS 100. In addition the spacing of the rafters 108 is determined and adjustments to the placements of anchors 116 may be made as necessary to accommodate the spacing, i.e., 12″ on center, 16″ on center, or 24″, block 1776.
As noted above, in many instances photovoltaic modules 102 are mounted upon surfaces 104 that are roofs, requiring the installers to ferry all elements for the installation from the ground to the roof. As SAMS 100 is initially in a compact state, for some installations it may be desired to transport SAMS 100 to the roof in the compact state. Moreover, method 1700 permits the installer to adapt, should SAMS be expanded before attachment or not—decision 1708.
For the same of example, in a first instance, the choice is to attach SAMS 100 and then expand. As such method 1700 proceeds with the installer attaching the left anchor 116 to the 1st rafter 108, block 1710. With the first anchor 116 attached, the installer then expands SAM 100, block 1712. With the cross bars now in the aligned position as discussed above, the installer proceeds to align SAMS 100 to the roof and attaches one or more anchors 116, block 1714.
For the sake of an alternative example, such as where the surface 104 is not overly slanted and/or easily accessible from the ground, for some installations it may be desired to pre-expand SAMS 100 prior to installation. As such, following decision 1708, the installer proceeds to expand SAMS 100, block 1716. With SAMS 100 now expanded, SAMS 100 is disposed on the surface and the installer fastens the top left anchor 116 to the 1st rafter 108, block 1718.
With the first anchor 116 now attached, the installer aligns SAMS 100 to the surface and fastens one or more additional anchors 116, block 1720. Moreover, although ultimately all anchors 116 will be fully attached, during the installation process it may be beneficial to permit some amount of play and flexibility in SAMS 100. As the anchors 116 are pre-positioned they are easily aligned to rafters and may at least be partially attached by their respective fasteners 806.
With SAMS 100 now positioned and aligned, the first photovoltaic module 102 is installed. This is accomplished by placing a first edge of the photovoltaic module 102 within a first set of friction locking retainer 112, block 122. The installer then places the second edge of the photovoltaic module 102 within a second set of friction locking retainers opposite from the first set, block 1724. The installer may also use a placer 606 as shown above with respect to
If more photovoltaic modules 102 are to be installed, decision 1726, the installer selects the next photovoltaic module, block 1728, and repeats the processes of placing its first edge within the next set of friction locking retainers 112, block 1722.
Of course, if additional SAMS 100 are required to complete the full installation, in general they are installed and attached to the initial SAMS 100 before the installation process of the photovoltaic modules 102 commences.
When all photovoltaic modules 102 have been positioned on the one or more connected SAMS 100, the installer then aligns and secures each photovoltaic module, block 1730. Any anchors 116 not previously completely fastened are now secured. Removable water caps 128 are then installed over each fastener and secured, block 1732.
As SAMS 100 provides substantially all mounting hardware in a generally pre-positioned state, it is to be appreciated that SAMS 100 and method 1700 advantageously reduce the number of elements, such as but not limited to bolts, washer and nuts, that must be individually handled and assembled by one or more installers in the installation environment, such as a roof. By reducing these individual components, the opportunity to drop one or more components is significantly reduced. In light of human nature often being to reach for a dropped object, risks to the installers may also be reduced in environments such as roofs or other elevated and or angled locations. Further, as SAMS 100 utilizes generally the same size driver for substantially all components, the installers need not carry multiple drivers or change drive bits continuously—again a time savings and potential safety improvement for the installers.
Changes may be made in the above methods, systems and structures without departing from the scope hereof. It should thus be noted that the matter contained in the above description and/or shown in the accompanying drawings should be interpreted as illustrative and not in a limiting sense. The following claims are intended to cover all generic and specific features described herein, as well as all statements of the scope of the present method, system and structure, which, as a matter of language, might be said to fall there between.
This application claims the benefit under 35 U.S.C. §119(e) of US Provisional Application No. 61/559,651 entitled SYSTEM AND METHOD FOR ESTABLISHING A SELF-ALIGNING MOUNTING SYSTEM FOR MOUNTING PHOTOVOLTAIC MODULES filed Nov. 14, 2011, the disclosure of which is incorporated herein by reference.
| Number | Date | Country | |
|---|---|---|---|
| 61559651 | Nov 2011 | US |
