Method for fastening an accessory in a plastic fuel tank

Abstract

Method for stake-fastening an accessory ( 4 ) into a plastic fuel tank, whereby: the accessory ( 4 ) is equipped with at least one orifice ( 5 ) which passes right through the accessory ( 4 ); at least some of the plastic of which the wall of the tank ( 1 ) is made is melted; and some of the molten plastic is forced through the orifice ( 5 ) of the accessory without becoming detached from the remainder of the molten plastic; the protruding molten plastic is given an appropriate shape ( 8 ) to obtain a self-formed plastic rivet, and is left to solidify; the size and shape of the orifice ( 5 ) and/or of the solidified plastic ( 8 ) being such that the accessory ( 4 ) is mechanically fastened to the tank by at least some of the solidified plastic ( 8 ), the stake-fastening of the accessory ( 4 ) occurring at the time of manufacture of the tank ( 1 ) through the moulding of a split or at least two-part parison.

1 - 10 . (canceled) 
     
     
         11 : A plastic fuel tank equipped with at least one accessory or support for an accessory, wherein the accessory or support for an accessory in direct contact with part of the wall of the tank and includes several orifices of oblong shape in which plastic identical to that of the wall of the tank is present, these orifices being arranged in such a way that the planes normal to the surface of the accessory at the orifices and comprising the longitudinal axes of the latter intersect on one and the same axis. 
     
     
         12 - 14 . (canceled)