Abstract:
A multi-layer garment pad construction ( 10 ) for attachment to the interior surface ( 101 ) of a garment ( 100 ) on the knee or elbow portion. The construction ( 10 ) including a waterproof layer ( 11 ) and a padded layer ( 12 ) frictionally associated with one another and also frictionally associated respectively with an outer adhesive layer ( 13 ) and an inner overlap layer ( 14 ) which are fixedly joined to one another to form a sealed chamber surrounding the waterproof ( 11 ) and padded ( 12 ) layers.

Description:
CROSS REFERENCE TO RELATED APPLICATIONS 
     This application is an improvement over U.S. Pat. No. 5,896,588, which issued on Apr. 27, 1999, and is entitled “Multi-Layer Knee Pad Construction.” 
    
    
     BACKGROUND OF THE INVENTION 
     1. Field of the Invention 
     The present invention relates to the field of protective padding devices in general, and in particular to a multi-layer, waterproof, cushioned pad construction for garments. 
     2. Description of Related Art 
     As can be seen by reference to the following U.S. Pat. Nos. 4,831,666; 4,920,577; 5,134,726; and, 5,592,689, the prior art is replete with myriad and diverse protective knee pad constructions. 
     While all of the aforementioned prior art constructions are more than adequate for the basic purpose and function for which they. have been specifically designed, they are uniformly deficient with respect to their failure to provide a simple, efficient, and practical protective garment pad construction that can be ironed onto the interior knee or elbow portion of a garment to provide a low profile waterproof, cushioned pad construction that will protect the user&#39;s knees or elbows. 
     As any gardener, construction worker, or parent with small children is all too well aware, the presence of a protective knee covering is an absolute necessity under virtually all circumstances. 
     As a consequence of the foregoing situation, there has existed a longstanding need for a new and improved type of garment pad construction that employs a multilayer construction that is waterproof, cushioned, and low friction, and the provision of such a construction is a stated objective of the present invention. 
     BRIEF SUMMARY OF THE INVENTION 
     Briefly stated, the improved garment pad construction that forms the basis of the present invention comprises in general an outer contact layer, a waterproof layer, a padded layer and an inner overlap layer that are operatively associated with one another in a specific fashion and are adapted to be operatively connected to a selected interior surface of a garment so that the presence of the pad construction is not readily apparent. 
     As will be explained in greater detail further on in the specification, the outer and inner layers are joined together in a specific fashion to form a sealed chamber that envelops the waterproof layer and the padded layer wherein the waterproof layer frictionally engages both the outer layer and one side of the padded layer, and the other side of the padded layer only frictionally engages the inner overlap layer. 
     In addition, the friction-only contact between the waterproof and padded layers resists the bunching of those layers within the chamber formed by the inner and outer layers. 
     Furthermore, this invention also contemplates fabricating the waterproof layer from two generally identical rectangular sheets of neoprene whose inner surfaces are in frictional contact with one another and whose outer surfaces are in frictional contact with the padded layer and the outer contact layer to further reduce any bunching that might normally occur within the chamber formed by the inner and outer layers. 
    
    
     BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWINGS 
     These and other attributes of the invention will become more clear upon a thorough study of the following description of the best mode for carrying out the invention, particularly when reviewed in conjunction with the drawings, wherein: 
     FIG. 1 is a perspective view of the protective garment pad construction that forms the basis of the present invention in use; 
     FIG. 2 is a rear perspective view of the knee pad construction; 
     FIG. 3 is a cross-sectional view taken through line  3 — 3  of FIG. 2; 
     FIG. 4 is an exploded rear perspective view of the first version of the preferred embodiment of this invention; and, 
     FIG. 5 is an exploded rear perspective view of the second version of the preferred embodiment of this invention. 
    
    
     DETAILED DESCRIPTION OF THE INVENTION 
     As can be seen by reference to the drawings, and in particular to FIG. 3, the improved multi-layer garment pad construction that forms the basis of the present invention is designated generally by the reference number  10 . The pad construction  10  comprises in general a waterproof layer  11 , a padded layer  12 , an outer adhesive layer  13 , and an overlap layer  14 . These layers will now be described in seriatim fashion. 
     As shown in FIGS. 3 and 4, in the first version of the preferred embodiment, the waterproof layer  11  comprises a single generally rectangular sheet of neoprene rubber material  20  having an enlarged thickness T 1 , which provides a generally resilient waterproof barrier for the pad construction  10 . 
     In addition, the padded layer  12  comprises a generally rectangular sheet of padding material  30  such as non-woven cotton batting, fleece, or the like wherein the overall dimensions and thickness of the waterproof layer  11  and the padded layer  12  are essentially the same. 
     Still referring to FIGS. 3 and 4, it can be seen that the outer contact layer  13  comprises an enlarged generally rectangular sheet of cloth fabric  40  preferably fabricated from a poly/cotton blend material and having an outer face  40   A  provided with a heat activated adhesive for securing the outer adhesive layer  13  to the interior surface  101  of a garment  100  such as the elbow portion of a shirt or jacket or the knee portion of a pair of pants. 
     Furthermore, the inner overlap layer  14  comprises a reduced dimension generally rectangular sheet of low friction material  50  such as a poly/blend fabric having an inner face  50   A  provided with a heat activated adhesive coating; wherein, the exterior dimensions of the inner overlap layer  14  are slightly larger than the exterior dimensions of the waterproof  11  and padded layers and substantially smaller than the exterior dimensions of the outer adhesive layer  13  such that the inner overlap layer  13  may be fixedly engaged to the outer adhesive layer  14  by either the heat activated adhesive coating  50   A  or by stitching  51  to captively engage the padded layer  12  and the waterproof layer  11  intermediate the inner  13  and outer  14  layers in a well recognized fashion. 
     Turning now to FIG. 5, it can be seen that the only difference between the first and second preferred embodiments of this invention is the fact that in the second version of the preferred embodiment, the waterproof layer  11  comprises a pair of generally identical rectangular sheets of neoprene material  20 ′ and  20 ″ having thicknesses T 2  and T 3  respectively; wherein, the combined value of thicknesses T 2  and T 3  is equal to the thickness T 1  in the first version of the preferred embodiment wherein the preferred value of T 1  is approximately ????????????? 
     It should be noted at this juncture that in both versions of the preferred embodiment there is only frictional engagement between the opposed surfaces of the waterproof layer  11  and the padded layer  12 , as well as between the waterproof layer  11  and the outer adhesive layer  14  and the padded layer  12  relative to the overlay layer  13 . The reason for this relationship being not only ease of fabrication of the pad construction  10 , but also to minimize the possibility that the waterproof layer  11  and/or the padded layer  12  will become bunched within the sealed chamber formed between the outer adhesive layer  14  and the inner overlay layer  13 . 
     It should further be noted that the use of the pair of neoprene sheet  20 ′  20 ″ in the second version of the preferred embodiment further enhances this anti-bunching feature of the finished pad construction  10  in that both of the neoprene sheets  20 ′ and  20 ″ are movable relative to one another. 
     Although only an exemplary embodiment of the invention has been described in detail above, those skilled in the art will readily appreciate that many modifications are possible without materially departing from the novel teachings and advantages of this invention. Accordingly, all such modifications are intended to be included within the scope of this invention as defined in the following claims. 
     Having thereby described the subject matter of the present invention, it should be apparent that many substitutions, modifications, and variations of the invention are possible in light of the above teachings. It is therefore to be understood that the invention as taught and described herein is only to be limited to the extent of the breadth and scope of the appended claims.