Molded grating provided with reinforcement and attaching arrangement

Abstract

A molded grating includes at least a grating member and a grating connector. The grating member includes a plurality of grating walls, each having a predetermined height, spaced apart with each other, and a plurality of crossing walls integrally connected to the grating walls in a cross manner, wherein each of the grating walls has an enlarged end portion and an elongated grating body extended therefrom, so as to enhance a structural strength of the grating member. The grating connector includes two resilient wings each having a wing cavity shaped and sized to receive the respective enlarged end portion of the two grating walls to substantially engage the resilient wings with the two grating walls respectively, so as to detachably attach the grating connector to the grating member.

What is claimed is:  
     
         1 . A molded grating, comprising at least a grating member which comprises a plurality of grating walls, each having a predetermined height, spaced apart with each other, and a plurality of crossing walls integrally connected to said grating walls in a cross manner, wherein each of said grating walls has an enlarged end portion and an elongated grating body extended therefrom, so as to enhance a structural strength of said grating member.  
     
     
         2 . A molded grating, as recited in  claim 1 , wherein each of said grating walls has a uniform T-shaped cross section to from said enlarged end portion and said elongated grating body so as to enhance a strength of said grating member, a height of said grating wall is equal to a height of said crossing wall so as to substantially increase a contacting surface when said grating member is arranged for mounting on a peripheral construction surface.  
     
     
         3 . A molded grating, as recited in  claim 1 , wherein said grating member has an anti-skid surface, which is formed as a gritted surface, provided on said enlarged end portion of each of said grating walls.  
     
     
         4 . A molded grating, as recited in  claim 1 , wherein said grating member has an anti-skid surface, which is formed as a gritted surface, provided on said enlarged end portion of each of said grating walls.  
     
     
         5 . A molded grating, as recited in  claim 1 , further comprising a grating connector which comprises a connector body and two resilient wings which is integrally and outwardly extended from two opposed sides of said connector body, wherein each of said resilient wings has a wing cavity shaped and sized to receive said respective enlarged end portion of said grating wall, so as to detachably engage said resilient wings with said two grating walls respectively.  
     
     
         6 . A molded grating, as recited in  claim 2 , further comprising a grating connector which comprises a connector body and two resilient wings which is integrally and outwardly extended from two opposed sides of said connector body, wherein each of said resilient wings has a wing cavity shaped and sized to receive said respective enlarged end portion of said grating wall, so as to detachably engage said resilient wings with said two grating walls respectively.  
     
     
         7 . A molded grating, as recited in  claim 4 , further comprising a grating connector which comprises a connector body and two resilient wings which is integrally and outwardly extended from two opposed sides of said connector body, wherein each of said resilient wings has a wing cavity shaped and sized to receive said respective enlarged end portion of said grating wall, so as to detachably engage said resilient wings with said two grating walls respectively.  
     
     
         8 . A molded grating, as recited in  claim 5 , wherein a distance between two wing cavities of said two resilient wings is slightly smaller than a distance between two said grating walls in such a manner that when said grating connector is mounted on said grating member, said resilient wings provides an urging force against said grating walls to substantially hold said enlarged end portions of said two corresponding grating walls within said two wing cavities of said resilient wings respectively.  
     
     
         9 . A molded grating, as recited in  claim 6 , wherein a distance between two wing cavities of said two resilient wings is slightly smaller than a distance between two said grating walls in such a manner that when said grating connector is mounted on said grating member, said resilient wings provides an urging force against said grating walls to substantially hold said enlarged end portions of said two corresponding grating walls within said two wing cavities of said resilient wings respectively.  
     
     
         10 . A molded grating, as recited in  claim 7 , wherein a distance between two wing cavities of said two resilient wings is slightly smaller than a distance between two said grating walls in such a manner that when said grating connector is mounted on said grating member, said resilient wings provides an urging force against said grating walls to substantially hold said enlarged end portions of said two corresponding grating walls within said two wing cavities of said resilient wings respectively.  
     
     
         11 . A molded grating, as recited in  claim 5 , wherein said enlarged end portion of said grating wall has two slanted side surfaces such that when said enlarged end portion of said grating wall is received in said wing cavity of said respective resilient wing, an inner surface of said wing cavity of said resilient wing is guided to substantially engage with said respective slanted side surface of said grating wall so as to lock up said resilient wing on said grating wall.  
     
     
         12 . A molded grating, as recited in  claim 10 , wherein said enlarged end portion of said grating wall has two slanted side surfaces such that when said enlarged end portion of said grating wall is received in said wing cavity of said respective resilient wing, an inner surface of said wing cavity of said resilient wing is guided to substantially engage with said respective slanted side surface of said grating wall so as to lock up said resilient wing on said grating wall.  
     
     
         13 . A molded grating, as recited in  claim 5 , wherein said enlarged portion of said grating wall has two curved side surface and arranged in such a manner that when said enlarged end portion of said grating wall is received in said wing cavity of said respective resilient wing, an inner surface of said wing cavity of said resilient wing is guided to substantially engage with said respective curved side surface of said grating wall so as to lock up said resilient wing on said grating wall.  
     
     
         14 . A molded grating, as recited in  claim 10 , wherein said enlarged portion of said grating wall has two curved side surface and arranged in such a manner that when said enlarged end portion of said grating wall is received in said wing cavity of said respective resilient wing, an inner surface of said wing cavity of said resilient wing is guided to substantially engage with said respective curved side surface of said grating wall so as to lock up said resilient wing on said grating wall.  
     
     
         15 . A molded grating, as recited in  claim 5 , wherein each of said grating walls, having a trapezoid cross sectional, has a thickness gradually reducing from said enlarged end portion thereof.  
     
     
         16 . A molded grating, as recited in  claim 10 , wherein each of said grating walls, having a trapezoid cross sectional, has a thickness gradually reducing from said enlarged end portion thereof.  
     
     
         17 . A grating connector for mounting on a grating member which comprises at least two parallel grating walls each having an enlarged end portion, wherein said grating connector comprises: 
 a connector body being shaped and sized for disposing in a grid cavity formed between said two grating walls; and    two resilient wings which is integrally and outwardly extended from two opposed sides of said connector body, wherein each of said resilient wings has a wing cavity shaped and sized for receiving said respective enlarged end portion of said grating wall, so as to detachably engage said resilient wings with said two grating walls respectively.    
     
     
         18 . A grating connector, as recited in  claim 17 , wherein a distance between two wing cavities of said two resilient wings is slightly smaller than a distance between two said grating walls in such a manner that when said grating connector is mounted on said grating member, said resilient wings provides an urging force against said grating walls for substantially holding said enlarged end portions of said two corresponding grating walls within said two wing cavities of said resilient wings respectively.  
     
     
         19 . A grating connector, as recited in  claim 17 , wherein each of said wing cavities is shaped and sized for fittedly receiving said enlarged end portion of said grating wall in such a manner that said inner side of said wing cavity of said resilient wing is guided for engaging with a side surface of said enlarged end portion of said grating wall so as to lock up said resilient wing on said grating wall.  
     
     
         20 . A grating connector, as recited in  claim 18 , wherein each of said wing cavities is shaped and sized for fittedly receiving said enlarged end portion of said grating wall in such a manner that said inner side of said wing cavity of said resilient wing is guided for engaging with a side surface of said enlarged end portion of said grating wall so as to lock up said resilient wing on said grating wall.