Patent Publication Number: US-5154642-A

Title: Innovative power plug socket assembly

Description:
BACKGROUND OF THE INVENTION 
     The present invention relates to a power plug socket assembly which is formed of an outer casing and an inner block insertable within the outer casing. The outer casing defines an internal chamber having a first and second section in open communication each with respect to the other. The subject invention includes the outer casing to have a bottom wall upon which is mounted a bevel block which is insertable and captured within a groove formed on a bottom wall of the inner block member when it is inserted and pressed into the outer casing. Additionally, the outer casing includes a shoulder wall between the first and second sections of the internal chamber with at least a pair of dowel members mounted thereto to provide spacing for passage of lead wires external to the power plug socket assembly when the inner block member is inserted into the outer casing. 
    
    
     BRIEF DESCRIPTION OF THE DRAWINGS 
     FIG. 1 is a perspective view of the power plug socket assembly embodying the present invention; 
     FIG. 2 is a perspective exploded and partially cut-away view of the power plug socket assembly shown in FIG. 1; 
     FIG. 3AA is a perspective view of an inner block member showing a bottom groove; and, 
     FIG. 3BB is a perspective view partially cut-away of a power lead holder member. 
    
    
     DESCRIPTION OF THE PREFERRED EMBODIMENT 
     Referring to FIG. 1, there is shown the outer contour of the power plug socket assembly constructed in accordance with the present invention concept. FIG. 2 illustrates the internal structure of the embodiment according to the present invention concept. As shown in FIG. 2, the power plug socket assembly is comprised of outer casing 1 defining an internal chamber having first and second sections as shown by the cut-away view. Inner block member 2 is insertable within the first and second chambers of outer casing 1 and is insertable therein in a longitudinal direction. A pair of copper blades 26 and 27 are provided for insert into both inner block member 2 and outer casing 1 as shown. A pair of fuse wires 3 and 4 of standard construction are provided with a power lead holder 22 shown in FIG. 3BB. 
     Outer casing 1 includes bevel block member 10 formed on and mounted to a bottom wall surface of the first section of the internal chamber, as is shown in FIG. 2. As shown in FIG. 2, the arcuately directed portions of the wall surface of outer casing 1 provides for wall thicknesses which are relatively reduced with respect to the wall thicknesses of other portions of the outer casing 1 in order to allow for elastic deformation. Inner block member 2 includes bottom groove 210 which is aligned with and longitudinally insertable to bevel block member 10. Bottom groove 10 includes transversely directed ridge member 215 which allows bevel block member 10 to be snappingly inserted within opening 220. In this manner, inner block member 2 is releasably captured within outer casing 1. As is clearly seen, the reduced wall thickness at the gripping areas of casing 1 allows for increased elasticity and deformability when inner block member 2 is inserted and fitted into outer casing 1. Bevel block 10 is resiliently set in groove 210 of inner block member 2 to permit inner block member 2 to be firmly engaged within outer casing 1. 
     The interface between the first and second section of the internal chamber of outer casing 1 is defined by shoulder wall 225. As can be clearly seen in FIG. 2, the cross-sectional area of the second section of the internal chamber is greater than the cross-sectional area of the first section of the internal chamber. Additionally, rear wall 29 of inner block member 2 has a cross-sectional area substantially equal to the cross-sectional area of the second section of the internal chamber to allow insert of rear wall 29 into the second section of the internal chamber of outer casing 1. 
     Outer casing 1 additionally contains a plurality of dowels 15 mounted on shoulder wall 225 and extending internal the second section of the internal chamber. When outer casing 1 is engaged with inner block member 2 having a front bottom tenon member 28, such is set in the bottom notch 14 formed in a bottom wall of outer casing 1, as is shown in FIG. 2. 
     Dowels 15 are used as a stop and spacers for contiguous mounting against rear wall 29 of inner block member 2 to maintain rear wall member 29 of inner block member 2 to be stably positioned and to define a spacing between the rear wall 29 of inner block member 2 and shoulder member 225 of outer casing 1 for the passage through notch 14 of electrical power leads. 
     Although this invention has been described in connection with specific forms and embodiments thereof, it will be appreciated that various modifications other than those discussed above may be resorted to without departing from the spirit or scope of the invention. For example, equivalent elements may be substituted for those specifically shown and described, certain features may be used independently of other features, and in certain cases, particular locations of elements may be reversed or interposed, all without departing from the spirit or the scope of the invention as defined in the appended claims.