EP3290615B1

EP3290615B1 - A retention system

Info

Publication number: EP3290615B1
Application number: EP17158677.9A
Authority: EP
Inventors: Tamas Kovacs
Original assignee: PMC Industries Inc
Current assignee: PMC Industries Inc
Priority date: 2016-09-01
Filing date: 2017-03-01
Publication date: 2019-06-19
Anticipated expiration: 2037-03-01
Also published as: EP3290616B1; EP3290615A1; CA3209785A1; CA2959043A1; PL3290616T3; EP3290616A1; PL3290615T3; HUE045902T2

Description

Field of the Invention

The present invention relates to retention systems and, more particularly, for a modular retention system for retaining snow, ice, items and other objects on a wall, rooftop and other structure using cross member having an anchor assembly configured to join to a latch assembly of top block and clamp assembly and hold the cross member.

Background of the Invention

Conventional assemblies and methods for snow and/or ice retention systems use a mounting system for mounting to a wall, roof or other structure to restrain from falling such as, for example, snow, ice, or other items and/or objects. The mounting system is adapted to mount thereto a cross-bar, rod, stop, decorative insert, snow break, or other member typically oriented parallel to the peak or otherwise transverse to the snow, ice or other objects. Additionally, when the structure is a metal roof with a standing seam, conventional mounting systems require numerous parts and assemblies that add cost to the manufacture and installation. Consequently, conventional assemblies are costly to manufacture as well as installation time is increased because of the assembly required onsite that adds time on the roof for the installer and overall costs for the installation.
WO 2013/055900 discloses a retention system according to the preamble of claim 1.
Consequently, there is a long felt need for a simple and effective means to attach the cross-member assembly to a clamp assembly for mounting to a wall, roof or other structure.

Summary of the Invention

It is an object of the present invention to overcome the disadvantages of conventional retention systems to satisfy a long felt need for a simple and effective means to attach the cross-member assembly to a mounting clamp assembly to a wall, roof or other structure.
It is an object of the present invention to provide a retention system for securing to a structure such as a standing seam of a metal roof having less components, direct approach transverse method of interconnecting, and improved installation. The retention system according to the invention comprises the features of claim 1.

Brief Description of the Drawings

Non-limiting and non-exhaustive embodiments of the present invention are described with reference to the following drawings. In the drawings, like reference numerals refer to like parts throughout the various figures unless otherwise specified.
For a better understanding of the present invention, reference will be made to the following Description of the Embodiments, which is to be read in association with the accompanying drawings, which are incorporated in and constitute a part of this specification, show certain aspects of the subject matter disclosed herein and, together with the description, help explain some of the principles associated with the disclosed implementations, wherein:

FIG. 1 is a side view illustrating the retention system in accordance with an embodiment of the present invention;
FIG. 2 is a side cross-sectional view, taken along lines A-A of FIG. 6A, illustrating the top block and clamp assembly of the retention system in accordance with an embodiment of the present invention;
FIG. 3 is a side cross-sectional view, taken along lines B-B of FIG. 6B, illustrating the ice flag and cross member assemblies of the retention system in accordance with an embodiment of the present invention;
FIG. 4 is an end view illustrating the cross member assembly of the retention system in accordance with an embodiment of the present invention;
FIGS. 5A, 5B, 5C, and 5D are side views illustrating the operation of operable connection between the top block, clamp assembly and cross member assembly in accordance with an embodiment of the present invention;
FIG. 6A is an exploded perspective view of a retention system, and FIG. 6B is an assembled perspective view illustrating the
retention system according to the present invention;
FIG. 7A is a side perspective view illustrating a clamp assembly of the present invention; FIG. 7B is a side view illustrating a leaf spring adapted to bias the top block toward the clamp assembly in accordance with another embodiment of the present invention, and FIG. 7C is a side perspective view illustrating a fastener used in accordance with embodiments of the present invention;
FIG. 8 is a side perspective view illustrating a top block of the retention system in accordance with an embodiment of the present invention;
FIG. 9 is a side perspective view illustrating a connector of the retention system of the present invention;
FIG. 10 is a side view illustrating an ice flag of the retention system of the present invention
FIG. 11 is a side view illustrating a cross member assembly of the retention system of the present invention; and
FIGS. 12A and 12B are side and top views illustrating a top block of the retention system in accordance with an embodiment of the present invention.

Description of the Embodiments

Non-limiting embodiments of the present invention will be described below with reference to the accompanying drawings, wherein like reference numerals represent like elements throughout. While the invention has been described in detail with respect to the preferred embodiments thereof, it will be appreciated that upon reading and understanding of the foregoing, certain variations to the preferred embodiments will become apparent, which variations are nonetheless within the spirit and scope of the invention.
The terms "a" or "an", as used herein, are defined as one or as more than one. The term "plurality", as used herein, is defined as two or as more than two. The term "another", as used herein, is defined as at least a second or more. The terms "including" and/or "having", as used herein, are defined as comprising (i.e., open language). The term "coupled", as used herein, is defined as connected, although not necessarily directly, and not necessarily mechanically.
Reference throughout this document to "some embodiments", "one embodiment", "certain embodiments", and "an embodiment" or similar terms means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the present invention. Thus, the appearances of such phrases or in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments without limitation. The term "or" as used herein is to be interpreted as an inclusive or meaning any one or any combination. Therefore, "A, B or C" means any of the following: "A; B; C; A and B; A and C; B and C; A, B and C". An exception to this definition will occur only when a combination of elements, functions, steps or acts are in some way inherently mutually exclusive.
The drawings featured in the figures are provided for the purposes of illustrating some embodiments of the present invention, and are not to be considered as limitation thereto. Term "means" preceding a present participle of an operation indicates a desired function for which there is one or more embodiments, i.e., one or more methods, devices, or apparatuses for achieving the desired function and that one skilled in the art could select from these or their equivalent in view of the disclosure herein and use of the term "means" is not intended to be limiting.
As is illustrated in FIGS. 1 through 12A-12B, the retention system is generally shown as element 100 is useful to attach to a standing seam 102 of a metal roof 104 as well as to display outwardly a portion of the metal roof 106 for decorative purposes as desired, as illustrated in FIGS. 3, 5D and 6B. The retention system 100 comprises a clamp assembly 110, top block 130 secured by a fastener 180 to the clamp assembly 110, and a cross member assembly 200 configured with an anchor assembly 230 to operably connect by a 90° approach to a latch assembly 140 formed in the top block 130, and a snow and/or ice flag 240 configured to operably connect to the cross member assembly 200. Two or more cross member assemblies 200 of the retention apparatus, system and method 100 may be joined together by a connector 190 so as to extend across a desired length of the metal roof 104. Moreover, the cross member assembly 200 may be formed in various dimensions, for example, a thin accent formed by two segments 202 and 204, that is scalable to various widths by adding additional segments (e.g. three by adding segment 206, four by adding segment 208,..., n) to the extruded cross member body 201 as described herein. According to an embodiment of the present invention, the retention system 100 is described as a modular assembly using a minimum number of components to operably connect to a seam 102 of a metal roof 104 to retain snow and/or function as a snow break. The retention system 100 also may formed and utilized without the portion of the metal roof 106. As will be appreciated by one skilled in the art, the retention system 100 may find further used for mounting other items and things to a structure such as a wall, building or rooftop, shingled roof, and structures other than a metal roof.
Referring to FIGS. 1-2, 5A-5D, 6A-6B, 7A-7B, 8 and 12A and 12B, the top block 130 may be formed from a block body 132 configured with a pair of sides 131, 133, an upper surface 134 and a lower surface 139 having a generally planar segments to secure the fastener 180 and mounted on the clamp assembly 110, respectively, and a latch assembly 140. The fastener 180 is configured to be received in a guide shaft 155 (e.g. a bore or an opening) extending between the upper and lower surfaces 134, 139 with a suitable dimension to provide rotational movement when operably connecting cross member assembly 200 to the top block 130 and clamp assembly 110, as illustrated in FIG. 5B as well as generally FIGS. 5A-5D and 6A-6B. The block body 132 be formed from suitable materials that are durable, resist corrosion, maintain strength at high temperatures, and are easy to maintain such as, for example, 6063-T6 and/or 6061-T6 aluminum alloy (e.g. containing magnesium and silicon as its major alloying elements), stainless steel alloys, plastics and carbon fiber products. The top block 130 may be formed in a dimension of 1.25 inches long, which dimension is non-limiting and as top block may be scaled as desired. The upper surface 134 may be formed with a tail 135 having an integral flange 150 with a pivot 151 and a rotation surface 152 formed at an angle for a rotation bevel 153 located adjacent the clamp assembly 110 functioning to provide movement when operably connecting the cross member assembly 200 to the clamp assembly 110 and top block 130. The upper surface 134 may be formed at an angle with a tail bevel 135 to remove excess material from the top block 130 so as to save material costs and to create a lighter component advantageously useful during the labor and installation of the retention system 100 while operating on a metal roof 104 or other structure. The upper surface 136 may be configured with a tong nose 136 and tong nose bevel 137 formed at an angle so as to provide clearance with the cross member assembly 200 when connecting with the latch assembly 140.
Referring to FIGS. 1, 2, 5A-5D, 6A-6B, and 12A-12B, the top block 130 may be configured with a latch assembly 140 formed between the upper surface 134 and the lower surface 139 so as to operably connect to the cross member assembly 200 by direct connection by placing crosswise, at right angles to the long axis of the cross member assembly 200 by inserting the cross member assembly 200 in a transverse approach to the latch assembly 140 the top block 130. The latch assembly 140 comprises a lip 142, a hook 144, a recess 146 and an anchor 148 to secure and hold the cross member assembly 200 by the applied force imparted on the top block 130 by the fastener 180. The latch assembly 140 may be formed by milling such as, for example, computer numeric controlled (CNC) machining to mill an entry lip bevel 143 formed at an angle to the lip 142, whereby the entry lip bevel 143 functions to allow lifting of the top block 130 when the anchor assembly 230 is positioned for entry to the top block 130. The tip surface 141 may be formed in a vertical axis dimension or may be part of the original extrusion or block of material. The entry lip bevel 143 functions to rotate top block 130 having the fastener 180 secured to the clamp assembly 110. The entry lip bevel 143 may be formed at an angle of approximately between thirty degrees (30°) and forty-five degrees (45°), which is non-limiting angular dimension, according to an embodiment of the present invention. The latch assembly 140 also may be formed with a hook bevel 145 formed at an angle joining the lip 142 to the hook 144 and recess 146 by CNC milling manufacturing techniques. The hook bevel 145 functions to latch and hold the cross member assembly 200 after entry and transitioning of the lip 142 by the anchor assembly 230.
The hook bevel 143 may be formed at an angle of approximately ten degrees (10°), which is a non-limiting angular dimension, according to an embodiment of the present invention. The body anchor 148 may be formed with a body anchor bevel 149 formed at an angle and functioning to transfer the applied forces of the fastener 180 to anchor assembly 230 so as to secure and hold the cross member assembly 200 to the top block 130. The body anchor bevel 149 may be formed at an angle of approximately forty-five degrees (45°), which is non-limiting angular dimension, according to an embodiment of the present invention. Additionally, the guide shaft 155 is configured with a portion extending into the body anchor 148 and body anchor bevel 149 so as to allow rotation of the top block 130 in cooperation with the entry lip bevel 143 when the anchor assembly 230 is positioned for entry to the top block 130 thereby functioning to allow lifting of the top block 130 and transitioning of the lip 142 by the anchor assembly 230 to latch and hold the cross member assembly 200. According to an embodiment of the present invention, each top block 130 surface of the lip 142, entry lip bevel 143, hook 144, hook bevel 145, recess 146, anchor 148 and anchor bevel 149 are configured or otherwise formed at an angles suitable to conform to the joining section(s) on the anchor assembly 230 of the cross member assembly 200.
Referring to FIGS. 1, 2, 5A-5D, 6A-6B and 11, the block body 130 can be configured with a flange 150 on one end. The flange 150 functions to rotate the top block 130 around pivot 151 so as to allow the block body 131 to open and receive the anchor assembly 230 as shown in FIG. 5B. The flange 150 further functions to arrange and orient the top block 130 on the upper surface 134 of the clamp assembly 110 so as to align opening of the guide shaft 155 with an attachment shaft 113 of the clamp assembly 110 as shown in FIG. 5C. For example, the fastener 180 may be inserted through the opening of the guide shaft 155 to the attachment shaft 113 in the upper surface 112 of the clamp assembly 110 shown in FIGS. 2, 5A-5D, 6A-6B and 7A. The fastener 180 may be tightened and loosened by the threads, for example, turning clockwise and counter-clockwise so as to operably connect the top block 130 to the clamp assembly 110 as shown in FIGS. 1 and 2. The flange 150 may be configured with a clamp rotation surface 152 in a suitable rotation flange bevel 153 formed at an angle so as to provide clearance in allowing pivoting of the top block 130 at pivot 151 for insertion of the anchor assembly 240 as shown in FIGS. 7B, 7C and 11. The flange 150 further provides a predetermined distance as registered on the pivot 151 on a side 154 of clamp assembly 110 to the edge of the clamp stand-off surface 229 on the cross member assembly 200 so as to provide a stable structure for the operable connection as shown in FIGS. 1, 2, 5A-5D, and 7, although one skilled in the field will understand that either side 154 or 156 may be utilized by the flange depending upon orientation of the clamp assembly 110 on the standing seam 102 as shown.
In operation, the flange 150 is configured to provide rotation and orientation and to register the load of any ice or snow supported to the clamp stand-off surfaces 219 and 229 of the cross member assembly 200 thereby directing these applied forces to the clamp assembly 110 secured to the seam 102 of the metal roof 104 as shown in FIG. 6B. Accordingly, the arm extension 216a is configured for multiple use to provide structural support, holding, maintaining, and preventing rotation by (1) the clamp stand-off surface 219 against a side 156 of the body 111 of the clamp assembly 110 when snow, ice or other object forces are applied to one or more of the cross member assembly 200 and ice flag 240, and (2) the nub projection 220, with support of the clamp-off surface 219, of the arm extension 216a provides holding of the ice flag 240 so as to resist deflecting, collapse and/or disengagement from coupler channel 203 of the cross member assembly 200 when snow, ice or other object forces are applied to the ice flag 240. Similarly, the anchor arm extension 224 is configured for multiple use to provide structural support, holding, and preventing rotation by (1) the clamp stand-off surface 229 against a side 156 of the body 111 of the clamp assembly 110 when snow, ice or other object forces are applied to one or more of the cross member assembly 200 and ice flag 240, and (2) the hook portion 222a provides holding of the ice flag 240 so as to resist deflecting, collapse and/or disengagement from the cross member assembly 200, whereby the coupler channel 203 allows for securing an ice flag 240, a connector 190, or both. The arm extension 216b is configured with hook portion 222b for holding of the ice flag 240 in the coupler channel 207 so as to resist deflecting, collapse and/or disengagement from the cross member 220 when snow, ice or other object forces are applied to the ice flag 240, whereby coupler channel 207 provides for securing an ice flag 240, a connector 190, or both. Similarly, the nub 220b on end 221b of the anchor arm extension 224 adjacent upper surface 217b is configured to provide structural support, holding, and preventing rotation the ice flag 240 in the coupler channel 207 so as to resist deflecting, collapse and/or disengagement from the cross member assembly 200 when snow, ice or other object forces are applied to the ice flag 240, whereby the coupler channel 207 allows for securing an ice flag 240, a connector 190, or both.
Referring to FIGS. 14, 5A-5D, 6A-6B, and 11, the cross member assembly 200 comprises a body 201 having 2 or more segments 202, 204 and 206 with integral coupler channels 203, 205 and 206 for affixing thereto the connector 190 and a snow or ice flag 240 is described. The body 201 may be formed from metal extrusion in elongated sections from suitable metals and/or alloys used in the production of extrusions including long constant cross-section structural shapes produced by pushing metal through a shaped die such as, for example, 6061-T6 and/or 6063-T6 aluminum alloy. The cross member assembly 200 extrusion may be configured with a front surface 210 and a back surface 214. The front surface 210 may be formed with a tab 211 and a tab 213 disposed on each edge thereby forming a channel 212 configured to receive a decorative portion of the metal roof 106. According to the exemplary embodiment of the present invention, the cross member 200 is configured to accept a decorative, matching section of metal roof 106 disposed slidably into a channel 212 on a facing, front surface 212 of the cross member assembly 200. The cross member assembly 200 is configured to accept a decorative, matching section of metal roof placed into a channel 212 on a facing, front surface of a cross-member. The cross-member assembly is configured to accept an ice flag 240 mountable to a back surface 214 of the cross member assembly 200 using an integral tong portion 251 cooperating with one or more coupler channels 203 and 207 formed in segments 202 and 226 of the cross member assembly 200. The ice flag 240 also includes a surface or forward face 246 having a channel 249 configured to accept insertion of a decorative, matching section of metal roof 106 disposed into the channel 249 to display a similar appearance with the decorative, matching section of metal roof 106 disposed into a channel 212 on a facing, front surface 210 of the cross member assembly 200, as shown in FIGS. 3 and 6B. Consequently, the cross member assembly 200 along with one or more ice flags 240 advantageously may be located or assigned to a particular place along the metal roof 104, at different heights above the metal roof by the selection of the coupler channel 203 or 207, as desired to retain snow and ice from sliding off thereby preventing a hazardous condition.
As is illustrated more particularly in FIGS. 3, 4 and 11, the cross member assembly 200 may be configured with one or more arm extensions 216, 216a, 216b connected to and projecting from the body 201 on the back surface 214 according to an embodiment of the present invention. The arm extension 216 extends generally transversely from the body portion 201 configured with an upper surface 217, a lower surface 218, and a clamp stand-off surface 219 on an end 221 of the arm extension 216. The end 221 of the arm extension 216 may be formed with a protuberance projection or nub 220 as well as a locking projection 222 configured or otherwise formed at an angle to secure and hold a connector 190 and the ice flag 240 in the coupler channel 203. For example, referring to segment 202, the arm extension 216a is configured with upper surface 217a, a lower surface 218b. Similarly, referring to segment 206, the arm extension 216b is configured with a lower surface 218c having the locking projection 222b and an upper surface 217b having a nub 220b on an end 221b thereof to secure and hold a connector 190 and/or the ice flag 240 in the coupler channel 207. It should be appreciated that the number of segments of the cross member assembly 200 is scalable and may be formed, for example, from two segments 202 and 204 in a short, thin design, or in a wider, taller design formed from multiple segments 202, 204, 206, 208,..., n for a desired appearance for the metal roof 104 by the addition of an arm extension 216 with a locking projection 222 and a nub 220 to secure and hold a connector 190 and/or the ice flag 240 in the coupler channel 207 as shown in FIGS 3 and 4.
Referring to FIG. 11, the cross member assembly 200 may be configured with a segment 204 having an anchor arm extension 224 and an anchor assembly 230. The anchor arm extension 224 may be formed with portion 225 and portion 227 extending from the body 201 with portions 225 and 227 connecting to a cross-bar portion 226 so as to give a particular shape to the coupler channel 205 so as to secure and hold a connector 190. The anchor assembly 230 may be configured as an extension 231 connecting to the cross-bar portion 226 and extending generally transverse therefrom. The extension 231 may be formed with a clamp stand-off surface 229 on lower surface adjacent the locking projection 222 of segment 202 connecting to the locking projection 222 by an ice flag locking bevel 223. The extension 231 may be formed with a locking a protrusion 232 at an end thereof and a hook portion 234. The protrusion 232 and hook portion 234 may be configured to join the tip 232 to the cross-bar portion 226 by the a lip entry surface 233, recess joining surface 235, a hook bevel surface 236, a lip mating surface 237, a lip bevel mating surface 238 along an upper surface of the extension 231. The lip entry surface 233 may be formed at an angle to allow entry of the protrusion 232 to the top block 130 and suitable to join with the angle of the entry lip bevel 143, for example, an angle approximately between thirty degrees (30°) and forty-five degrees (45°), which is non-limiting angular dimension, according to an embodiment of the present invention. The hook bevel surface 236 may be formed at an angle suitable to join with the hook bevel 145 of the top block 130, for example, at an angle of approximately ten degrees (10°), which is a non-limiting angular dimension, according to an embodiment of the present invention. The lip bevel mating surface 238 may be formed at an angle suitable to join with the angle of the entry lip bevel 143 of the top block 130, for example, at an angle of approximately forty-five degrees (45°), which is non-limiting angular dimension, according to an embodiment of the present invention.
In operation, as illustrated in FIGS. 2, 3, 6A and 6B, the cross member assembly 200 along with one or more ice flags 240 advantageously may be assigned to a particular place or position along the metal roof 104, at different heights above the metal roof by the selection of the coupler channel 203 or 207, as desired to snow and ice from sliding off thereby preventing a hazardous condition. The applied force and load of any ice or snow is supported by the structure of the hook 144 of the top block 130 and hook portion 234 of the anchor assembly 240. In addition, the joined surfaces of the top block 130, for example, the surface of the lip 142, entry lip bevel 143, hook 144, hook bevel 145, recess 146, anchor 148 and anchor bevel 149 are configured to conform to the joining section on the anchor assembly 230 of the cross member assembly 200. Principally, the joined surfaces of the top block 130 are joined to the adjacent surfaces of the tip 232 to the cross-bar portion 226 by the a lip entry surface 233, recess joining surface 235, a hook bevel surface 236, a lip mating surface 237, a lip bevel mating surface 238 along an upper surface of the extension 231. Consequently, the cross-member assembly 200 is configured with the anchor assembly 230 advantageously forming a snap connection with the top block 130 and clamp assembly 110 (e.g. fastener 180, top block 130 and latch assembly 140) by inserting thereto (i.e. snap in place to the clamp assembly 110 and top block 130) in a direct contact, transverse approach, or alternatively securing the fastener 180 through spring and/or leaf spring 160 and guide shaft 155 of the top block 130, and to clamp assembly 110 (e.g. an A2 SI clamp or A2-N™ clamp).
As illustrated in FIGS. 3, 6A-6B, and 10, an ice flag 240 of the retention system 100 can be configured with a body 241 having a lower segment 242 and an upper segment 250. The body 241 of the ice flag 240 may be formed from metal extrusion in elongated sections from suitable metals and/or alloys in the production of extrusions including long constant cross-section structural shapes produced by pushing metal through a shaped die such as, for example, 6061-T6 and/or 6063-T6 aluminum alloy. The body 241 may be cut to dimensions such as, for example, approximately 3 inch or 8 cm sections, which dimension is non-limiting, easily disposed between standing seams 102 of the metal roof 104 operating to retain snow and ice from slipping off the metal roof 104. The lower segment 242 includes a rear face 244 operable to retain and apply a pressure force against snow and ice accumulation between the standing seams 102 on the metal roof 104. The lower segment or to further includes a forward face 246 configured with tabs 247 and 248 forming a channel 249 for insertion of a decorative portion of the metal roof 106 that may be displayed facing an observer from the ground. The installed cross-member assembly 200 and ice flag 240 may each receive a decorative portion of the metal roof 106 in the channel so as to match the color of the metal roof 104 and form an appealing decorative appearance.
As illustrated in FIGS. 3, 6A-6B, 10 and 11, the upper segment 250 of the ice flag 240 can be configured with a tong portion 251 extending from a hinge spring portion 252 operably connected to the body 241 and lower segment 242. The tong portion 251 has an upper arm 254 and a lower arm 260 extending from the hinge spring portion 252. The upper arm 254 may be configured with a tongue end 255 having an upper surface 256 that may be formed as a continuous surface that is relatively smooth, a forward end 257 on a distal end of the upper surface 256 and a tooth 258 on a proximal end of the upper surface 256. The upper surface 256 is may be configured to engage and register against the upper surface 218 (e.g. 218a of coupler channel 203 shown in FIG. 3) within a particular coupler channel 203 or 207 as shown in FIGS. 3, 6A-6B, and 11. The forward end 257 may be configured to provide a smooth engagement with a particular coupler channel 203 or 207 as shown in FIGS. 3, 6A-6B, and 11. The tooth 258 configured or otherwise formed at an angle to engage and operably connect with the locking projection 222 of the cross member assembly 200 as shown in FIGS. 3 and 6A.
Referring to FIGS. 3, 10 and 11, the tooth 258 can be formed with an inward beveled edge forming a back angle of approximately forty degrees (40°), which is non-limiting, so that the tooth 258 prevents unwanted collapse of the tong 251 and spring 252 portions thereby releasing of the ice flag 240 from a coupler channel 203 or 207 of the cross member assembly 200 by the applied force of snow, ice or other object imparting a force on back surface 244 of the lower segment 242. Similarly, the lower arm 260 may be configured with a nose 261 having an arcuate sliding surface 262, a proximal surface 263, a recess 264, a register edge 265 and a protrusion 266. The arcuate sliding surface 262 is configured to provide a smooth engagement and transition (e.g. to slide over the nub 220) with a particular coupler channel 203 or 207 as shown in FIGS. 3, 6A-6B, and 11. The recess 264 can be configured with a shape so as to align adjacent surfaces between the nub projection 220 on the cross member assembly 200 and the surfaces of the proximal surface 263, the register edge 265 and the protrusion 266 of the ice flag 240. The connection between the nub 220 and the recess 264 is configured to prevent unwanted disengagement, release and/or collapse of the tong 251 and spring 252 portions thereby releasing of the ice flag 240 from a coupler channel 203 or 207 of the cross member assembly 200 by the applied force of the load from snow, ice or other object imparting a force on back surface 244 of the lower segment 242. In addition, the protuberance or projection 266 adjacent the register edge 265 may be formed of a suitable length and extension to engage a portion of the lower surface 218 (e.g. lower surface 218a of coupler channel 203 as shown in FIGS. 3 and 11) so as to provide further engagement and locking of the ice flag 240 to the cross member assembly 200, thereby preventing unwanted release therefrom by the applied force of snow, ice or other object imparting a force on back surface 244 of the lower segment 242. As discussed herein, the ice flag 240 may be placed at selectable predetermined heights for snow and/or ice retention purposes as desired (e.g. in a higher or lower position above the metal roof 104) by selection and insertion into the coupler channel 203 or 207 of the cross member assembly 200.
Referring to FIG. 9, a connector 190 may be configured to operably connect sections of the cross member assembly 200 so as to create extended lengths on a metal roof 104 according to an embodiment of the retention system 100 of the present invention. The connector 190 may be configured as an elongated bar or rod from suitable materials such as AISI 300 Series 1B-B stainless steel. A generally rectangular shaped connector 190 may be formed having a top 191, bottom 192, side 193, side 194, front 195, back 196 and a notch 197 at a mid-portion thereof. The notch 197 is useful to register the mid-portions of the connector when inserting into coupler channels 203, 205 and 207 of the cross member assembly 200. In operation, each of the coupler channels 203, 205 and 207 is configured to receive the connector 190 and sliding engagement thereof as shown in FIG. 6A. The dimensions of the connector 190 and the coupler channels 203, 205 and 207 may be adapted so that the connector 190 engages the side walls body 201, upper surface 217, lower surface 218 and locking projection 222. Additionally the connector 190 is configured to be received in the anchor arm extension 224 formed at a mid-portion of the body 201 and, more specifically within the box-like coupler formed by the body segment 201, portion 225, portion 227, and crossbar portion 226 as is illustrated in FIG. 11. In operation one or more connectors 190 may be inserted into one or all of the coupler channels 203, 205 and 207 to the mid-portion notch 197 in one cross member assembly 200. Another cross member assembly 200 may be aligned to one or all of the coupler channels 203, 205 and 207, as utilized, to receive the connector into corresponding coupler channels 203, 205 and 207.
Referring to FIGS. 1, 2, 5A-5D, 6A-6D and 7A, the retention system 100 utilizes a clamp assembly 110 for mounting to a standing seam 102 of a metal roof 104. The clamp assembly 110 can be configured with an attachment shaft 113 opening to receive the fastener 180 so as to secure the top block 130 thereto with the cross member assembly 200 there-between as described herein. The attachment shaft 113 may be formed smooth, threaded, or both, to secure to the threads 185 of the fastener 180, or alternatively made smooth for a self-tapping fastener 180 having a hardened composition that cuts threads in the 6063 aluminum alloy upon tightening. The clamp assembly 110 comprises a body 111 having a generally U-shaped form with downwardly extending legs 114 and 118 forming a slot 117 configured to receive the standing seam 102 of a metal roof 104. The body 111 is configured with an upper surface 112 having a generally planar shape with the attachment shaft 113 centrally located in the upper surface 112 for receiving a fastener 180 to attach items and objects thereto on the metal roof 104. The leg 114 is configured with a foot 115 and a toe portion 116 at an end of the generally downwardly extending leg 114 segment thereof configured to be located adjacent the standing seam 102 and underneath any crimped ends or roll of the standing seam 102 of the metal roof 104 inserted in slot 117. The foot 115 and toe portion 116 have an increased grip used advantageously to secure to the standing seam 102 in the slot 117, whereby the applied forces are spread across the standing seam 102 through the edge 116a of the toe portion 116 so as to increase a holding force as well as to reduce puncturing (e.g. causing a hole where water and elements may enter into the structure or home through the roof) or other damage such as, for example, to a paint or hydrophobic coating (e.g. Teflon®) of the metal roof. The leg 118 can be configured with an arcuate surface 119, one or more pins 120, 122 disposed in smooth pin channels 121, 123 formed in the leg 118 of the body 111 and extending to the slot 117 along a path to one or more pockets 129 formed the inner surface of the leg 114. The one or more pockets 129 are configured to cooperate with the pins 120, 122 for increasing the holding force of the clamp assembly 110, whereby in operation tightening the fastener urges the pins 120, 122 against the standing seam 102 causing an indentation or recess in the standing seam 102 by causing pressing force on the seam 102 between the end of the pins 120, 122 and the one or more pockets 129 on the leg 114. A suitable claim assembly 110 is manufactured by PMC Industries, Inc. identified by clamp product part Ace Clamp®, A2® and/or A2-N™. The clamp assembly 110 of the present invention has advantages of improved holding force configured to withstand harsh environmental conditions (e.g. heat, wind, vibration, seismic, storms and other forces) so as to maintain the clamp assembly 110 secured to the standing seam 102 such as, for example, seismic, vibration, wind, hurricanes, and other adverse conditions. The clamp assembly 110 of the present invention has advantages of improved holding force load characteristics of at least a thirty percent (30%) increase compared to conventional clamp assemblies such as, for example, increased holding force ranging approximately up to and including 1,600 lb. vertical load.
Additionally, according to an embodiment of the present invention, the arcuate surface 119 formed in leg 118 may be configured to allow forming the one or more pin channels 121, 123 corresponding to pins 120, 122 at a predetermined angle 172. The predetermined angle 172 may be established along the arcuate surface 119 such as, for example, in a range between predetermined angle 172a and predetermined angle 172b. Accordingly, the clamp assembly 110 can be configured during manufacture to change, vary or modify the predetermined angle 172 of the pins 120,122 as desired so as to change where pins 120, 122 will press against the standing seam 102. Consequently, the leg 118 of the body 111 of the clamp assembly 110 provides for customization for different pin channels and configurations of the metal roof 106 available from various metal roof manufacturers.
For example, as illustrated by phantom lines 172a and 172b in FIG. 7A, certain metal roof 106 pin channels have different configurations of the standing seam 102, whereby fastener 124 and washer 128 of clamp assembly 110 may direct the pins 120, 122 along the predetermined angles 172a or 172b, so as to join the standing seam 102 sufficiently below the rolled metal of the seam for improved strength. Moreover, the clamp assembly 110 may be configured to direct the pins 120, 122 along the predetermined angle 172b so as to improve clearance for tools utilized by the installer, e.g. difficulty reaching and driving fasteners between standing seams 102 when certain tools are positioned horizontal and/or otherwise at angles parallel to the metal roof 104. In an alternative embodiment of the present invention, the leg 118 of the clamp assembly 110 may be formed offset pin channels 121, 123 along the arcuate surface 119, for example, a pin channel 121 formed at predetermined angle 172a and a pin channel 123 formed a predetermined angle 172b so as to offset the holding part of each pin 120, 122 whereby the washer 128 is of suitable size to urge pins 120, 122 against the standing seam 102.
As illustrated in FIG. 7C, the fastener 180 of the retention system 100 further comprises a head 181, a washer 182 formed integral to the head with serrations 183 on the surface of the washer 182 oriented, for example, adjacent the top block, and an elongated shaft 184 that may be threaded 185. The fastener 180 may be formed from suitable materials having sufficient strength, durability, and ability to withstand environmental conditions such as, for example, a serrated flange hex head screw formed from AISI 300 Series stainless steel with dimensions of 3/8 - 16 x 1" long. According to an exemplary embodiment of the present invention, the fastener 180 may be used to secure the top block 132 the clamp assembly 110 by inserting the fastener 180 in the guide shaft 150 and the attachment shaft 113 of the clamp assembly. The fastener 180 and the fastener 122 for the clamp assembly 110 may be the same thereby providing the reduction in components of the retention system 100 and advantages and cost and installation of the retention system 100, whereby the cross member assembly 200 may be inserted to the top block 130, emitting an audible sound (e.g. snap or clicking) for holding the cross member assembly 200 securely that is advantageous in installations of the retention system 100 on steep pitches of the metal roof 104, one person installations, whereby the audible sound provides the installer with information on the positive engagement of the cross member assembly 200 as shown in FIGS. 5A-5D
In another embodiment of the present invention, as illustrated in FIGS. 5A-5D, the retention system 100 may be configured preassembled with the fastener 180 secured through the top block 130 to the attachment shaft 1113 of the clamp assembly 110 with the fastener 180 tightened to a predetermined distance 170, as shown in FIGS. 5B. The predetermined distance 170 may be established as the distance for the anchor assembly 230 to be inserted so as to traverse the lip 142 to reach recess 146 to engage the hook portion 144 such as, for example, .125 inch or 3.25 mm, which is non-limiting, utilizing the pivot 151. The preassembled retention system 100 may be formed with a suitable fastener 180 for example a threaded hex bolt inserted into the threaded channel 127 or a self-tapping threaded bolt secured in the attachment shaft 113. Alternatively, the preassembled retention system 100 may be formed in a predetermined distance range 171, whereby the range is a distance such that (1) the anchor assembly 230 may be inserted to the recess 146 and (2) unwanted rotation of the top block 130 is prevented when the fastener 180 is tightened. The predetermined distance range 171 for unwanted rotation may be limited to where the tail of the flange 150 or the rotation surface 152 does not rise above the upper surface 112 of the body 111 of the clamp assembly 110. For example, the retention system 100 has the fastener 180 and top block 130 affixed to the clamp body 111 at a predetermined distance range 171 set at, for example, approximately a range approximately between about 0.125 to 0.157 inches or 3.25 to 4.0 mm, as shown in FIG. 5C.
In an alternative embodiment of the present invention, as shown in FIG. 7B, the retention assembly 100 may be configured a spring or leaf spring 160 located between the top block 130 and the fastener 180 for biasing the top block 130 toward the clamp body 111. Accordingly, the fastener 180 may be disposed through a spring or leaf spring 160, the guide shaft 155 and secured to the attachment shaft 113 of the clamp assembly 110 so as to provide a spring-loaded attachment whereby the cross member assembly 200 may be inserted to the latch assembly 140 of top block 130 clicking and holding the cross member assembly 200 securely. The planar lower surface 139 of top block 130 is placed adjacent the upper surface 112 of clamp body 111 with the leaf spring 160 arranged on the upper surface 134 of the top block 130 aligning guide shaft 155 and attachment shaft 113 for inserting therethrough the fastener 180 to affix securely to a clamp assembly 110. The embodiment of the present invention where the retention apparatus and system 100 is configured with the leaf spring 160 is advantageous for on person installations of the metal roof and where an audible sound provides the installer with information on the positive engagement of the cross member assembly 200. The leaf spring 160 may be formed from suitable materials having sufficient strength, durability and ability to withstand environmental factors such as, for example, stainless steel with suitable bias and elastomeric properties when disposed on the seam 102 of a metal roof 104 for extended periods of time as shown in FIG. 6B. Consequently, the retention system 100 is configured to connect the anchor assembly 230 of the cross-member assembly 200 using the leaf spring 160 providing biasing of the top block 130 against the fastener 180, whereby the cross member assembly 200 may be inserted in the latch assembly 140 and snap into place and the fastener 180 may then be tightened uniformly to finalize the installation.
While certain configurations of structures have been illustrated for the purposes of presenting the basic structures of the present invention, one of ordinary skill in the art will appreciate that other variations are possible which would still fall within the scope of the appended claims. Additional advantages and modifications will readily occur to those skilled in the art. Therefore, the invention in its broader aspects is not limited to the specific details and representative embodiments shown and described herein. Accordingly, various modifications may be made without departing from the spirit or scope of the general inventive concept as defined by the appended claims.

Claims

A retention system for securing to a structure, the retention system comprising:
a clamp assembly (110) for attaching to the structure, said clamp assembly comprising a clamp body (111) for attaching to the structure, said clamp body being configured with an upper surface (112)

with an attachment shaft (113) centrally located in the upper surface (112) for receiving a fastener (180) to attach items and objects thereto;

a top block (130) configured with an upper surface (134) and a lower surface (139) configured with a generally planar shape with a guide shaft (155) formed therein and extending between said upper (134) and lower surface (139) wherein said guide shaft (155) being adapted to receive said fastener (180) thereby joining the top block (130) to said attachment shaft (113) of said clamp body (111), said top block (130) comprising a flange (150) located in a mounted state of the retention system, adjacent to a side of said clamp body wherein said flange (150) being adapted to allow rotation of said top block (130), and a latch assembly (140) located on a side of said top block (130) opposite said flange (150); and

a cross member assembly (200) configured with a body consisting of a generally elongated planar shape with a front surface (210) and back surface (214), said back surface being provided with two or more segments (204). one of which (204) being formed by an anchor arm extension (224) and the one or more other segments (202, 206) being formed by at least one arm extension (216, 216a, 216b), said anchor arm extension (224) extending generally transverse from a back surface (244) of said body and

comprising an anchor assembly (230) adapted to operably connect to said latch assembly (140) of the top block (130) and clamp assembly (110), and said at least one arm extension (216,216a, 216b) extending generally transverse from a back surface (244) of said body and comprising a coupler channel (203,205,207) configured to operably connect an ice flag (240) and/or to receive a connector (190) therein,

characterized in that

the cross member assembly (200) further comprises a damp stand-off surface (219,229) located on the at least one arm extension (216, 216a, 216b) and/or on said anchor arm extension (224) of said cross member assembly (200), said clamp stand-off surface (219, 229) being adapted to abut a side of said clamp body (111) when said anchor assembly (230) is secured in said latch assembly (140) for opposing forces applied by snow, ice or other objects to the cross member assembly (200) and/or the ice flag (240).
The retention system of claim 1, wherein , when the clamp stand-off surface is
located on said anchor arm extension (224) of said cross member assembly (200), said clamp stand-off surface (229) is located on a lower surface (218) of said anchor assembly and adapted to abut a side of
said clamp body (111) when said anchor assembly (230) is secured In said latch assembly (140) for opposing forces applied by snow, ice or other objects to one or more of the cross member assembly (200) and/or ice flag (240).
The retention system of claim 1, wherein , when the clamp stand-off surface is located on an arm extension (216, 216a) spaced apart from the anchor arm extension (224) of said cross member assembly, said clamp stand-off surface (219) is located on an end (221) of said arm extension (216, 216a) and adapted to abut a side of said clamp body (111) upon securing said anchor assembly (230) and said latch assembly (140) for opposing forces applied by snow, ice or other objects to one or more of the cross member assembly (200) and/or ice flag (240).
The retention system of claim 1, further comprising a nub (220a) located on an end of an arm extension spaced apart from said anchor arm extension (224) and adapted to oppose forces applied by snow, ice and/or other objects to said ice flag (240).
The retention system of claim 1, further comprising a pivot (151) located between said lower surface(139) and said flange (150) of said top block (130), said pivot rotating said top block upon insertion of said anchor assembly in said latch assembly (140).
The retention system of claim 5 , further comprising a clamp rotation surface (152) having a rotation flange (153) bevel formed at an angle on said clamp rotation surface of said flange on said top block (130), said clamp rotation surface (152) providing clearance for rotating said top block (130) upon insertion of said anchor assembly in said latch assembly (140).
The retention system of claim 1, further comprising an ice flag (240) comprising an ice flag body (241) configured with an upper segment (250) and a lower segment (242), said upper segment consisting of an integral tong portion (251) composed of an upper arm (254) and a lower arm (260) extending from a hinge spring portion (252) connected to the ice flag body (241) and lower segment (242), whereby said tong portion (251) and hinge spring portion (252) are configured to operably connect to one or more coupler channels (203, 207) of said cross member assembly, said lower segment (242) comprising a forward face (246) and a rear face (244), said rear face operable to retain and apply a pressure force against snow, ice and/or other objects and further including a forward face configured with tabs (247, 248) forming a channel (249) for insertion of a decorative portion of the structure.
The retention system of claim 7 , wherein said tong portion (251) further comprises a tongue end (255) having a tooth (258) formed with an inward beveled edge of said upper arm whereby the tooth (258) operably connects to a tooth on said arm extension of said cross member assembly (200) so as to oppose collapse of said tong portion (251) and hinge spring portion (252) thereby disengaging said ice flag (240) from said coupler channel (203,207) of said cross member assembly (200) by the applied force of snow, ice and/or other object imparting a force on back surface of the tower segment.
The retention system of claim 8, wherein said tong portion (251) further comprises a recess formed on said lower arm (260) whereby said recess operably connects to a nub (220) on the at least one arm extension of said cross member assembly (200) so as to oppose collapse of said tong portion (251) and hinge spring portion (252) thereby disengaging said ice flag from said coupler channel (203, 207) of said cross member assembly (200) by the applied force of snow, ice and/or other object imparting a force on back surface (214) of the lower segment (242).
The retention system of claim 1, further comprising a leaf spring (160) adapted to bias the top block (130) toward the clamp assembly, said leaf spring (160) arranged on said upper surface (134) of said -top block (130) aligning said guide shaft (155) and attachment shaft (113) for inserting therethrough said fastener (180) to affix securely to a clamp assembly (110).
The retention system of claim 7, wherein said front surface (210) of said cross member assembly (200) and/or said forward face (246) of said ice flag (240) further comprising a tab (213) at an upper edge and a tab (211) at a lower edge forming a channel (212, 249) adapted for inserting an object providing a decorative appearance to said front surface of said cross member assembly or to said forward face of said ice flag.
The retention system of claim 11, further comprising an object inserted in said channel (212, 249), wherein said object comprising an portion of a metal roof.