Patent ID: 6601889
Filing Date: 2003-08-05
Classification: E21B,G01N

Abstract:
A bailer, comprising:a top piece adapted to engage a main body of said bailer; said top piece having an open upper end of predetermined diameter; a mounting member disposed in spanning relation to said open end of said top piece; said mounting member adapted to be engaged by a rope means for lowering and lifting said bailer into and out of a body of liquid fluid; a closure means for closing said open upper end when said bailer is substantially full of liquid fluid; said closure means having a flat base that overlies said open upper end; and said closure means having sidewalls depending from said flat base that are adapted to engage an external surface of said top piece; whereby said closure means is secured to said top piece when said bailer is completely filled with said liquid fluid so that no air is trapped within said bailer.