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1. Field of the Invention
This invention relates in general to hand-constructed barriers, and more particularly to a modular privacy fence with individually replaceable pickets.
2. Description of Related Art
A conventional privacy fence is made of a single row of closely arranged wood pickets that must be specially assembled to match the particular contour and geography of the fenced-in area. Gaps often appear between individual pickets, which can limit the privacy afforded by such a fence. Another disadvantage of such a fence is that the wood pickets deteriorate under continuous exposure to sun, wind, and rain conditions, and often wear unevenly. Such wear can increase the visible gaps between the pickets. When individual fence pickets must be replaced, basic carpentry skills and tools are often required to repair the fence. For example, wood fence pickets are commonly secured in place with staples or nails that must be first removed before installing the new picket. Some fence designs even feature a top rail, which must be removed in order to replace individual pickets.
For increased privacy over single-row picket fences, conventional double-row picket fences are assembled using one or more transverse center rails to which two rows of alternating pickets are nailed or stapled to each side of the center rails. One disadvantage of such a design (beyond the need for basic carpentry skills to assemble one), is that substantial gaps are visible when the fence is viewed at an angle, which reduces the privacy of the fence. Other double-picket or staggered fence designs attempt to improve upon the design by replacing the center rails with a top cap rail, which reduces gaps, but requires special assembly on site.
Metal fences, while more resistant to the abovementioned wear, do not offer the same privacy, security, or aesthetic appeal. Moreover, entirely metal fences are much more costly than wood fences and absorb large amounts of heat during daylight hours, which can make them unsuitable for residential purposes.
In accordance with one embodiment of the present invention, a modular privacy fence with individually replaceable pickets is provided which substantially eliminates or reduces disadvantages associated with previous systems.
In accordance with another embodiment, a modular privacy fence with individually replaceable pickets is provided, which includes a stringer having two rails, the first rail comprising a plurality of fence picket dividers that protrude in a perpendicular direction from the first rail. The modular privacy fence also includes a fastener attached to the end of the stringer, wherein the fastener is arranged to secure the stringer to a fence post, and a bottom rail with a trough. In particular embodiments, the second rail may also include a separate plurality of fence picket dividers that protrude from the second rail in a direction perpendicular to the second rail and parallel to the first plurality of fence picket dividers. In such arrangements, the first plurality of fence picket dividers is offset from the second plurality of fence picket dividers in a direction parallel to the first rail. In other embodiments, the modular privacy fence may include a compressive fastener that connects the first rail with the second rail, which, when closed, decreases the distance between the first rail and the second rail such that a securing picket divider of the first plurality of fence picket dividers overlaps opposing adjacent picket dividers of the second plurality of fence picket dividers.
In accordance with another embodiment, the second rail of the modular privacy fence instead includes a plurality of gates attached to the ends of some of the fence picket dividers. Each gate may comprise a clasp and a hinge, or each gate may be rotatable about an axis extending from a common picket divider.
One advantage of a modular privacy fence with individually replaceable pickets is the simple manner in which the fence may be assembled without any special tools or carpentry skills on the part of the installer. The modular privacy fence may be arranged to work with commercially available fence pickets that can be purchased from a local hardware store. If an individual picket needs to be replaced, it may be easily removed and another new picket installed in its place without requiring portions of the fence to be disassembled.
Another advantage is the customizable nature of the stringers, which may feature ornamental designs that add to the aesthetic appeal and, therefore, commercial value of the fence.
For a more complete understanding of the present invention and its advantages, reference is now made to the following description and the accompanying drawings, in which:
Referring to the drawings, embodiments of the present invention will be described below.
The fence pickets 110 may likewise be made of wood, metal, concrete, composite, or any suitable material. However, the fence pickets 110 are preferably made of wood or composite for aesthetic reasons. The fence pickets 110 may vary in dimension and shape, but will generally have a length corresponding to the desired height of the fence. In preferred embodiments, the modular privacy fence will be configured to work with commercially available wooden pickets, some common dimensions of which are provided in Table 1 below.
Of course, fence pickets 110 may also come in other sizes and shapes. For example, a picket 110 to be used with non-privacy alternative embodiment may be much shorter and narrower.
The stringers 102 are used to limit a fence picket's 110 lateral movement. The number of stringers 102 corresponds in general to the height of the fence 100. Taller fences may require more stringers 102 in order to ensure sufficient lateral stability. For example, an eight-foot fence will preferably have at least two stringers. However, the number of stringers 102 may also be increased or decreased for aesthetic or structural reasons. A stringer 102 can be attached to a fence post 108 by any type of suitable connector, including but not limited to: a circumferential bracket and bolt, a transverse bolt that secures a fence post 108 between each side of the stringer 102, slot and tab means, tongue and groove means, welding, etc.
The bottom rail 106 prevents a fence picket 110 from falling through the fence 100. In most embodiments, the bottom rail 106 also provides a level platform that ensures that the fence pickets 110 will have a substantially uniform appearance when installed next to each other. Like a stringer, the bottom rail 106 can be attached to a fence post 108 by any type of suitable connector, including but not limited to: a circumferential bracket and bolt, a transverse bolt that secures a fence post 108 between each side of the stringer 102, slot and tab means, tongue and groove means, welding, etc.
Fence pickets 110 may be installed in the modular privacy fence 100 by sliding a loose fence picket 110′ through the stringers 102 until it comes to rest on the bottom rail 106. Unlike many conventional fences with wooden pickets, no additional tools or attachment mechanisms (e.g., staples, nails, glue, or a cap rail) are needed to secure the picket in place according to this particular embodiment. A fence picket 110 may also be slidably removed from the fence 100.
The distance between any two picket dividers 208 should be the width of a fence picket 110 plus a small tolerance to allow the picket 110 to be inserted and removed with relative ease. However, the magnitude of the tolerance should be limited (e.g., no more than a few eighths of an inch) to reduce any unintended movement of the fence picket 110 within the picket slot ZZ that might occur. A fence picket 110 may also be secured in a second direction of motion (perpendicular to the first) by an opposing picket divider 210. Since pickets 110 come in different dimensions, it is anticipated that different stringers would be manufactured to accommodate common widths/depths (e.g., 3.5″ wide and ⅝-1″ deep).
The picket dividers (301, 302), which are shown as having the same height as the outer rails (310, 312), may vary in size and shape while still enabling the aforementioned function. The uniformly spaced picket dividers 302 extend inwardly from and perpendicular to the outer rail 310. Opposing picket dividers 301, which form equally sized picket slots 304, are spaced the same distance apart as picket dividers 302 but are offset by a distance. In certain preferred embodiments, picket dividers 301 will be offset such that each picket divider 301 is halfway between two opposing picket dividers 302. The picket dividers (302, 302) will protrude from their corresponding rails 310 by at least ⅛″ and, in preferred embodiments, will generally be slightly longer than the depth of a picket 110 (e.g., ⅝″-1″) the picket divider is designed to accommodate.
An optional elastomeric insulator 306 may be affixed to the interior surfaces of each of the picket dividers 208. Such elastomeric material 306 reduces excess space that allows lateral picket movement and absorbs any incidental impact from the pickets 110 (i.e., reduces picket jitter from wind) while still permitting pickets 110 to be slidably installed/removed.
In alternative embodiments, the elastomeric insulator 306 may instead by replaced with a tensioning mechanism, such as a bow spring, cantilever spring, or a détente mechanism, positioned on either side of a picket divider (301 or 302), which engages with the sides of an inserted picket 110 so as to provide a closer fit.
For stringers that are made of metal, some may feature any of a variety of finishes (e.g., nickel, gun metal, antique bronze, chrome, satin, etc.). The outer face of the rails (310, 312) may also feature etched ornamental designs (e.g., faux bolt heads, floral patterns, geometric patterns, etc.) to increase the aesthetic appeal. Ornamental designs could be also be configured as separate installable plates that may be affixed to the outer face of a stringer rail via tongue and groove, screws, adhesive, etc.
The picket dividers (421, 423), which are shown as having the same height as the outer rails (420, 422), may vary in size and shape while still enabling the aforementioned function. The uniformly spaced picket dividers 423 extend inwardly from and perpendicular to the outer rail 420. Opposing picket dividers 421, which form equally sized picket slots 424, are spaced the same distance apart as picket dividers 423 but are offset by a distance. In certain preferred embodiments, picket dividers 421 will be offset such that each picket divider 301 is halfway between two opposing picket dividers 423.
Of course, picket spacers are not limited to use with double-row stringers. In alternative embodiments, a single row stringer may include picket spacers in order to achieve the look of a conventional picket fence, albeit with the consequence of decreased privacy.
The stringers (604, 606) are connected to each other using a fastener which provides the necessary compressive force. For example, the fastener might include a circumferential bracket 610 that is fitted with a bolt 611 that pierces the rails (604, 606) of the stringer and is secured in place with a nut 612. The nut 612 could be tightened to increase the compressive force on the fence pickets 110. Alternatively, a fastener might include a clamp, a pull-action latch clamp, a tie (e.g., rope), or any suitable means for impermanently compressing/decompressing the stringer arrangement. Longer stringer sections might require additional compressive fasteners positioned through the length of the stringer so as to apply an even force throughout.