Patent Application
20120061636
The present invention generally relates to a fence kit and method for strengthening a fence, and more specifically, the present invention relates to a fence kit and method for strengthening a fence for sustaining a specified wind velocity.
Fences are commonly used to delineate borders between properties, such as between residential homes or lots, or commercial properties. Typical types and materials used for fencing may include vinyl, chain link, wood, or stone or brick.
Chain link fences have considerable strength but are considered by many to be aesthetically unattractive and may be easily damaged. Wood fences are considered by many to be more attractive than chain link. However, wood can quickly deteriorate from exposure to the weather, and consequently, wood fences are considered by many to be high maintenance. Vinyl fences, such as Polyvinyl Chloride (PVC), are preferred as requiring less maintenance than wood fences and more aesthetically pleasing than other types of fencing. However, vinyl fencing can be weak, especially regarding susceptibility to wind damage. Additionally, damaged vinyl fencing is not easily repaired or replaced, and often requires removal and replacement of fence posts to repair even a single slat.
It would therefore be desirable to provide a strengthened vinyl fence for longevity of the fence and being able to sustain wind challenges. It would further be desirable to provide a method and/or kit for strengthening existing vinyl fences, in one instance after construction of the fence. It would also be desirable to provide a method and/or kit for strengthening a fence, before construction, which is delivered in stock form, for strengthening the fence to sustain a specified wind velocity over a period of time.
In an aspect of the invention, a method for strengthening a vinyl fence comprises: providing a plurality of fence posts having specified dimensions, the posts defining a hollow interior; providing a plurality of section panels including specified dimensions, the plurality of section panels each including a slat portion, and the plurality of section panels each including a fence railing coupled to a top and bottom of the slat portion, the fence railings each defining a hollow interior; positioning at least one strengthening member in each of the hollow portions of the top and bottom fence railings; coupling the fence railings to the posts by a connecting portion of the fence railings passing through corresponding holes in the posts which are defined by the posts; positioning a plurality of post members within the hollow interior of a top of the fence posts; attaching the post members to the connecting portion of the fence railing using a first attachment element having specified dimensions; coupling the bottom fence railing to a bottom portion of the post using a second attachment element having specified dimensions; and coupling the top and bottom fence railings to the strengthening members using a plurality of third attachment elements having specified dimensions.
These and other objects, features and advantages of the present invention will become apparent from the following detailed description of illustrative embodiments thereof, which is to be read in connection with the accompanying drawings. The various features of the drawings are not to scale as the illustrations are for clarity in facilitating one skilled in the art in understanding the invention in conjunction with the detailed description. In the drawings:
A method and system for strengthening a vinyl fence according to an embodiment of the invention includes a number of posts, railings and section panels for completing a specified length of fence. The posts, railings and section panels may be a standard fencing assembly. In the method and system of the present invention, the standard fence assembly will be strengthened to withstand a sustained wind velocity. For example, a maximum wind velocity of 75 mph over a period of time, such as is the standard for fencing in Miami-Dade County of Florida to withstand hurricane force winds. One example, of an embodiment of a fence product using the method of the present invention includes the: “Grand Illusions Series™” by Illusions Vinyl Fence™.
Referring to
Two steel U-channels 22 are inserted in the hollow portions 38 of the top railing 30 and bottom railing 34 as also shown in
In the present embodiment of the invention two U-channels 22 are inserted in the top and bottom section railings. Other fence types may require different numbers of U-channels to meet the wind standards, which require the rigidity of the fence be able to sustain specified continuous wind velocities. For example, one U-channel may be used in the top railing and two in the bottom railing. Further, three U-channels may be used in the top and bottom railings. The U-channel may be galvanized steel. Also, for example, the gauge of U-channel steel may vary. Other shapes for strengthening members may be used other than U-channel, as well as other materials for strengthening members, such as aluminum.
The railings are attached to the posts, which may be by snapping in using a pre-notched 42 portion of the railings being pre-assembled to section panel such that the pre-notched portion of the railing is inserted into the post.
Screws used in the embodiment of the present invention described herein are embodiments of attachment elements, i.e., first, second, and third attachment elements. A post member embodied as a donut 50 is inserted into the top area of each of the posts 14. The donut 50 is shaped as a square with a circular hole 52 in the center of the donut 50. For example, the donut 50 may be about 5 in by 5 in, or about 8 in by 8 in, to fit in the hollow interior 15 of a corresponding post of the similar dimensions. Alternatively, the donut may be other shapes that fit into the hollow post, such as, rectangular, oval, or circular.
The donuts 50 are secured in the top area of the posts 14 using at least one screw 58 passing through the donut 50 into a portion of the railing 14 and the U-channels 22 which extends into the post 14. Two screws 58 may be used per fence section where the screws are 1 inch in length, when using posts having cross-section dimensions of 5 in by 5 in, or 8 in by 8 in dimensions. The donut 50 is positioned in the hollow interior 15 of the post 14 and thus is adjacent the interior walls 15 of the post 14. Once secured in position, the donut 50 provides additional stiffening to the post 14, and the connection between the post 14 and top fence railing 30. Any torsional or directional forces caused by the velocity of the wind are resisted by the donut 50, post 14, and top railing 30 arrangement, thereby providing rigidity to the fence. For example, wind velocities causing sway of the post or torsion of the fence will be discouraged from bending, twisting or toppling the fence because the donut 50 will receive some of the force via the donut and post 14 as the donut 50 pushes up against the post 14, thereby stabilizing the fence assembly by stabilizing the posts 14 and top railing 30, as well as the bottom railing 34 being strengthened by the U-channels 22.
Additionally, a steel rod 62 (
For the bottom of the posts adjacent the ground, a screw 64 is passed through the fence post 14 and a U-channel 22 to further stabilize the fence section panels and the entire fence. For example, four screws per fence section may be used to attach the fence post to the U-channel where the screws are 3 inches long when using 5 in by 5 in posts, and the screws are 4 inches long for 8 in by 8 in posts.
A plurality of attachment members embodied as screws 63 are used to secure the top and bottom fence railings 30, 34 to the U-channels 22. For example, the screws 63 can be equally spaced along each of the top and bottom railings. For example, 30 ¼ in long screws per fence section can be used when using 5 in by 5 in posts. In another example, 60 ¾ in long screws per fence section can be used when using 8 in by 8 in posts. Other attachment elements may be used to secure the donut to the railing, the fence post to the U-channel, and the railings to the U-channels.
Further, post caps 60 are glued on the top of the posts 14 to discourage water from entering the posts and for aesthetic reasons.
The U-channels 22 may be G60 galvanized steel which is 20 gauge steel, and may have a thickness in the range of 0.036 in to 0.042 inches. Further, the web width 24 and leg length 26 of the U-Channel may be specified dimensions (as shown in
One advantage of the strengthening members including the U-channel is the resulting stiffening versus the weight of the strengthening member provides the stiffening of the fence to sustain a sustained wind speed of 75 mph without being too heavy for the fence railing and fence slat structure to hold the strengthening member without warping, cracking, or breaking. The strengthening members are strong enough to provide stiffness to the fence, but light enough to avoid bending, buckling, or any other type of over burdening the vinyl fence.
In another embodiment of the invention, the elements described above for strengthening a standardized fence can be packaged as a kit 100 (alternatively referring to as a wind kit). The kit 100 includes a package 70 housing the U-channels 22 for insertion into the hollow interior 38 of the top and bottom railings 30, 34 as shown in
More particularly, the kit 100, for each fence section, the donut 50 for insertion into the hollow interior at the top of each of the posts; the U-Channels 22, and different size screws 5864, 63, in packages 65 for attaching the donut to the fence railing, the post to the U-channels, and the fence railings to the U-channels, respectively. As described above the donuts 50 are secured in the top of the posts 14 using a screw 58 passing through the donut into a portion of the top railing 30 which extends into the post 14. Further, a screw 64 is passed through the fence post 14 and a U-channel 22 to secure the fence section panel to the bottom of the posts 14 adjacent the ground, thereby further stabilizing the fence.
By applying the kit package to a standard fence purchase, the fence can be modified to provide support to the top and bottom rails and the entire fence for sustaining sustained 75 mph winds, and wind gusts of up to 110 mph. Different kits may be provided for different fencing, such as fencing using 5 in by 5 in posts, or 8 in by 8 in posts. Using the present invention, the entire fence sustains 75 mph winds, and wind gusts of up to 110 mph when using the 5 in by 5 in posts, and sustains 75 mph winds, and wind gusts of up to 130 mph when using 8 in by 8 in posts. Each kit includes the screws, U-channel supports, and donuts, and optionally the rods for each section of fence. For example, one embodiment of a kit includes, for an 8 in by 8 in post fence construction, sixty ¾ in screws, two 1 in screws, four 4 in screws, four galvanized U-channels, and one 8 in by 8 in donut, for each section of fence, being used with posts having 8 in by 8 in cross-sectional dimensions. Thus, the above kit includes two first attachment elements as screws having a 1 inch length; four second attachment elements as screws having a 4 inch length; sixty third attachment elements as screws having a ¼ inch length; and a post member embodied as an 8 in by 8 in donut; and four strengthening members being galvanized steel U-channels.
In another embodiment, a kit includes, for a 5 in by 5 in post fence construction, thirty ¾ in screws, two 1 in screws, four 3 in screws, three galvanized U-channels, and one 5 in by 5 in donut, for each section of fence, for use with posts having 5 in by 5 in cross-sectional dimensions. Thus, the above kit includes two first attachment elements as screws having a 1 inch length; four second attachment elements as screws having a 3 inch length; thirty third attachment elements as screws having a ¾ inch length; and a post member embodied as an 8 in by 8 in donut; and three strengthening members being galvanized steel U-channels.
A method 200 for strengthening a vinyl fence according to an embodiment of the invention, similarly to the system 10 described above, includes in step 204 providing a plurality of fence posts having specified dimensions, and the posts having a hollow interior. Step 204 including providing a plurality of section panels including specified dimensions, the plurality of section panels each including a slat portion 33, and the plurality of section panels each including a fence railing coupled to a top and bottom of the slat portion. The fence railings each define a hollow interior. Positioning a post of specified dimensions into a prepared hole in the ground and optionally setting in cement is included in step 208. In step 212, at least one strengthening member is positioned in each of the hollow portions of the top and bottom fence railings. In step 216, the fence railings are coupled to the posts by a connecting portion of the fence railings passing through corresponding holes in the posts which are defined by the posts. Step 220 includes, positioning a plurality of post members within the hollow interior of a top of the fence posts. Step 224 includes, attaching the post members to the connecting portion of the fence railing using a first attachment element having specified dimensions. Step 228 includes, coupling the bottom fence railing to a bottom portion of the post using a second attachment element having specified dimensions. Step 232 includes, coupling the top and bottom fence railings to the strengthening members using a plurality of third attachment elements having specified dimensions. The method above enables the fence assembly withstand a sustained wind speed, such as a sustained wind speed is at least 75 mph or less.
While the present invention has been particularly shown and described with respect to preferred embodiments thereof, it will be understood by those skilled in the art that changes in forms and details may be made without departing from the spirit and scope of the present application. It is therefore intended that the present invention not be limited to the exact forms and details described and illustrated herein, but falls within the scope of the appended claims.
