Patent Document

CROSS-REFERENCE TO RELATED APPLICATION(S) 
       [0001]    This application is a continuation of U.S. application Ser. No. 12/440,583, filed Jan. 5, 2010 and entitled “Drainage Element, which was a §371 national stage application of PCT Application No. DE2007/001573, filed on Sep. 1, 2007 and entitled “Entwässerungselement,” which was an International Application claiming priority to German Patent Application No. 10 2006 043 571.0, which was filed on Sep. 16, 2006, all of which are hereby incorporated herein by reference in their entirety. 
     
    
     BACKGROUND OF THE INVENTION 
       [0002]    The invention relates to a drainage element for a plant container. 
       SUMMARY OF THE INVENTION 
       [0003]    Known from EP 1 702 506 A1 is a drainage element, therein called Drainage Set for plant containers, which presents a cohesive covering made of geotextile tissue. Contained within is a drainage material in the form of grains. Due to gravity such a grain is squeezable into a drainage hold of a plant container and the drainage hold thus sealable. The enclosing geotextile tissue serves as a seal in this environment. Drainage is not provided for. 
         [0004]    Known from DE 203 12 056 is a drainage element, therein called drainage element, which consists of a covering with a hole to enable fluids to pass through and a drainage mass, wherein the drainage mass is encased by the covering and consists of at least two different water-storing and respectively water-conducting components. 
         [0005]    Collectively termed geotextiles are functional textiles used in civil and underground engineering to separate, filter and drain. One of these geotextiles is an endless mat, also known as a geogrid, which presents a randomly oriented interlacing or tangled braid in between two filter materials. 
         [0006]    The endless mats are open on the side margins and the specific strata are recognizable. At least one of the filter mats overlaps in such a way that the filter mats of adjoined geotextile mats prevent openings overlapping each other and thus the leakage of sand and such like is averted. 
         [0007]    The invention therefore underlies the task of providing for an easier and improved drainage element. 
         [0008]    This task is achieved through the criteria of the coordinate main claims. In accordance with the invention, the dewatering or drainage element presents a randomly oriented interlacing or tangled braid and a filter mat which encases the randomly oriented interlacing or tangled braid or the drainage element presents a randomly oriented interlacing or tangled braid and a filter mat, wherein the filter mat overlaps in such a way that in the operating state the randomly oriented interlacing or tangled braid is covered by the filter mat. In various implementations according to the invention, the dewatering or drainage element is a non-woven fiber braid and the random braid encasing filter mat or the drainage element is a non-woven fiber mesh, and a filter pad, and the filter mat is so on the random mesh, that in the operating state, the non-woven fiber mesh is covered by the filter mat. The randomly oriented interlacing or tangled braid is of such stiffness that it is capable of keeping its original height even under the pressure of incumbent flower soil and thus will not be compressed under such circumstances. The drainage element is manufactured with a low height or thickness and provides for optimal drainage. Accordingly, siltation and rot in a plant container is precluded. Plant containers are subsequently also referred to as flower containers or flower pots and the drainage element is also referred to as drainage cushion, drainage pad or, in short, a drainpad. The filter mat serves as filter layer and is thus referred to as filter layer. The drainage element prevents flower soil and substrate from flushing out, so that a loss of substrate and flower soil as well as pollution around the plant container is averted. The substrate serves as a breeding ground. The drainage element is extremely light in weight, easy to clean and reusable. 
         [0009]    At least one end area of the filter mat is sewn together. A first embodiment presents a one-piece filter mat. One end area is sewn so that the filter mat encases the randomly oriented interlacing or tangled braid. In a second embodiment, the drainage element presents a two-piece filter mat and the end areas are sewn together. The drainage element is designed as a pad and thus easy to produce. 
         [0010]    At least one end area of the filter is welded together. A first embodiment presents a one-piece filter mat. One end area is welded so that the filter mat encases the randomly oriented interlacing or tangled braid. In a second embodiment, the drainage element presents a two-piece filter mat and the end areas are welded together. The drainage element is designed as a pad and thus easy to produce. 
         [0011]    At least one end area of the filter mat is glued together. A first embodiment presents a one-piece filter mat. One end area is glued so that the filter mat encases the randomly oriented interlacing or tangled braid. In a second embodiment, the drainage element presents a two-piece filter mat and the end areas are glued together. The drainage element is designed as a pad and thus easy to produce. 
         [0012]    For a better understanding of the invention, the embodiments are subsequently elucidated in more detail on the basis of the drawings. 
     
    
     
       BRIEF DESCRIPTION OF THE FIGURES 
         [0013]      FIG. 1A  a plan view of a disc-shaped drainage element with a randomly oriented interlacing or tangled braid and two-piece filter mat covering the randomly oriented interlacing or tangled braid. 
           [0014]      FIG. 1B  is a cross-sectional view of the drainage element of  FIG. 1A  with the randomly oriented interlacing or tangled braid encased by the filter mat. 
           [0015]      FIG. 2A  a plan view of a rectangular-shaped drainage element with a randomly oriented interlacing or tangled braid and a one-piece filter mat covering the randomly oriented interlacing or tangled braid. 
           [0016]      FIG. 2B  is a cross-sectional view of the drainage element of  FIG. 1B  with the randomly oriented interlacing or tangled braid encased by the filter mat. 
           [0017]      FIG. 3A  a plan view of an alternative embodiment of a rectangular-shaped drainage element with a randomly oriented interlacing or tangled braid and a filter mat attached to one side of the randomly oriented interlacing or tangled braid. 
           [0018]      FIG. 3B  is a side elevational view of the drainage element of  FIG. 3A  with a randomly oriented interlacing or tangled braid and a filter mat attached to one side of the randomly oriented interlacing or tangled braid from side view. 
           [0019]      FIG. 4  is a cross-sectional view of the drainage element of  FIGS. 1A and 1B  shown in place in a conical flower container. 
           [0020]      FIG. 5  is a cross-sectional view of the drainage element of  FIGS. 3A and 3B  shown in place in a rectangular flower container. 
       
    
    
     DESCRIPTION OF THE INVENTION 
       [0021]    Elements that are similar or the same are marked with identical reference signs throughout the various figures. 
         [0022]      FIGS. 1A and 1B  depict a disc-shaped drainage element  1  with a randomly oriented interlacing or tangled braid  2 , encased by a two-piece filter mat  3 . The randomly oriented interlacing or tangled braid  2  is also disc-shaped and presents a first frontal area  20 , a second frontal area  22 , and at least one peripheral surface  24 . The filter mat  3  consists of two parts carried out with a first filter mat piece  4  and a second filter mat piece  5 . The first filter mat piece  4  covers the first frontal area  20  and shows a first filter mat end area  6  that protrudes beyond the first frontal area  20 . The second filter mat piece  5  covers the second frontal area  22  and shows a second filter mat end area  7  that protrudes beyond the second frontal area  22 . The outer end of the filter mat  3  comprises a first end area  6  and second end area  7  which overlap on the peripheral surface  24  and are sewn together with thread  8 . These respective end areas  6 ,  7  can alternatively be glued or welded together as well, such that the first end area  6  and second end area  7  are oriented in the same direction (as shown at  6 A and  7 A, respectively). 
         [0023]      FIGS. 2A and 2B  depict an embodiment of the drainage element  1  with a rectangular-shaped randomly oriented interlacing or tangled braid  2 , encased by a one-piece filter mat  3 . The randomly oriented interlacing or tangled braid  2  presents an upper surface and an opposing bottom surface and four peripheral sides  24 A,  24 B,  24 C,  24 D with smaller surfaces (as is also shown in  FIG. 3A ). The filter mat  3  is put around the randomly oriented interlacing or tangled braid  2  in such a way so as to enclose the interlacing or tangled braid  2 . The filter mat  3  presents an outer end area that protrudes above three peripheral sides  24 B,  24 C,  24 D and is sewn. The filter mat  3  also has an surface  26  that is directly adjacent to the remaining peripheral side  24 A. Components  9  and  10  of the end area  6  come to lie on top of each other at three peripheral sides and are there sewn together. These respective end areas  9 ,  10  can alternatively be glued or welded together as well, such that the first end area  9  and second end area  10  are oriented in the same direction (as shown at  9 A and  10 A, respectively). 
         [0024]      FIGS. 3A and 3B  depict a second rectangular drainage element  1  with a rectangular randomly oriented interlacing or tangled braid  2  and a filter mat  3 . The filter mat  3  covers one side of the randomly oriented interlacing or tangled braid  2  and presents an overlapping end area that protrudes above the randomly oriented interlacing or tangled braid  2 . The randomly oriented interlacing or tangled braid  2  presents an upper surface and an opposing bottom surface and four peripheral sides  24 A,  24 B,  24 C,  24 D with smaller surfaces. As shown in  FIG. 3A , one length  11  of the end area  6  is chosen in such a magnitude that a value of this length is greater than a value of a height  12  of the randomly oriented interlacing or tangled braid  2  (shown in  FIG. 3B ). 
         [0025]      FIG. 4  depicts the disc-shaped drainage element  1  arranged in a round plant container  13 . A flower pot outlet  14  of the flower pot  13  is covered by using the drainage element  1 . So if the flowerpot  13  is filled up with flower soil, substrate and a plant, the drainage element  1  will retain or keep its original height and when watering the flower pot  13  the water will be able to drain off the drainage element  1  and out the flower pot outlet  14 . 
         [0026]      FIG. 5  depicts the second rectangular drainage element  1  arranged in an oblong square flower pot  15 . The filter mat  3  is chosen in such a magnitude that it fits a side rim  17  of the randomly orientated interlacing at a first area  16  and comes to rest on a base  19  of the flower pot at a second area  18  in the operating state. 
         [0027]    The invention relates to a drainage element  1  for a plant container  13 . In accordance with the invention, the drainage element  1  presents a randomly oriented interlacing or tangled braid  2  and a filter mat  3  which surrounds the randomly oriented interlacing or tangled braid  2  or the drainage element  1  presents a randomly oriented interlacing or tangled braid  2  and a filter mat  3  and the filter mat  3  projects beyond the randomly orientated interlacing or tangled braid  2  in such a way that the randomly orientated interlacing or tangled braid  2  is covered by the filter mat  3  in the operating state. 
         [0028]    The foregoing description and drawings comprise illustrative embodiments of the present inventions. The foregoing embodiments and the methods described herein may vary based on the ability, experience, and preference of those skilled in the art. Merely listing the steps of the method in a certain order does not constitute any limitation on the order of the steps of the method. The foregoing description and drawings merely explain and illustrate the invention, and the invention is not limited thereto, except insofar as the claims are so limited. Those skilled in the art that have the disclosure before them will be able to make modifications and variations therein without departing from the scope of the invention.

Technology Category: 1