Abstract: The invention relates to a laminate liner for sealingly engaging a container in an associated container and closure assembly. The liner can include at least first, second, third, and fourth layers, respectively, and have a thickness between 0.0060-0.0120 inches. The first and bottom layer, can comprise a plastic polymeric material, and have a thickness between 0.0005-0.0015 inches. The second layer can comprise a metallic material and have a thickness between 0.0005-0.0010 inches. The third layer can comprise a chip board material, and have a thickness between 0.0045-0.0055 inches. The third layer can prevent the liner from curling or deforming from its preferably flat shape. The fourth and top layer can comprise a plastic polymeric material and have a thickness between 0.0005-0.0015 inches. An adhesive bonding layer, having a thickness between 0.0003-0.0005 inches, can be located between first, second, third, and fourth layers, to bond adjacent layers together.

Abstract: The invention relates to a laminate liner for sealingly engaging a container in an associated container and closure assembly. The liner can include at least first, second, third, and fourth layers, respectively, and have a thickness between 0.0060-0.0120 inches. The first and bottom layer, can comprise a plastic polymeric material, and have a thickness between 0.0005-0.0015 inches. The second layer can comprise a metallic material and have a thickness between 0.0005-0.0010 inches. The third layer can comprise a chip board material, and have a thickness between 0.0045-0.0055 inches. The third layer can prevent the liner from curling or defoiming from its preferably flat shape. The fourth and top layer can comprise a plastic polymeric material and have a thickness between 0.0005-0.0015 inches. An adhesive bonding layer, having a thickness between 0.0003-0.0005 inches, can be located between first, second, third, and fourth layers, to bond adjacent layers together.

Abstract: A plurality of piston and cylinder assemblies extend radially from the wall of the drill tube above the drill bit. A roller assembly is journalled in the distal ends of the pistons and engages the wall of the bore hole. The pistons are urged outwardly by fluid pressure to engage the wall and they are inclined approximately 10.degree. from the longitudinal axis of the drill string so that when the drill string is rotated, the engagement of the inclined rollers against the wall urges the drill bit downwardly thus assisting in applying the required pressure to the rotating bit.