초록 ▼

A flat bottom tank provides for complete drainage of liquid contents through sloped drainage in the bottom head. The bottom head has a raised center portion which is pyramidal shaped in one embodiment. The sides of the bottom head are broken upwardly to form smooth, rounded wall surfaces. The center

A flat bottom tank provides for complete drainage of liquid contents through sloped drainage in the bottom head. The bottom head has a raised center portion which is pyramidal shaped in one embodiment. The sides of the bottom head are broken upwardly to form smooth, rounded wall surfaces. The center portion and the side walls slope downwardly towards one another to form a line of flow extending around the perimeter of the center portion. The line of flow slopes downwardly from a first corner of the bottom head to a second corner of the bottom head which is diagonally opposite the first corner. A drain outlet located adjacent the second corner allows for the drainage of liquid contents from the tank.

대표청구항 ▼

[ What is claimed and desired to be secured by Letters Patent is:] [1.] A method of forming the bottom of a tank for liquids, said tank having generally upwardly extending sides, comprising the steps of:a) providing a square or rectangular shaped bottom plate member having a plurality of sides and c

[ What is claimed and desired to be secured by Letters Patent is:] [1.] A method of forming the bottom of a tank for liquids, said tank having generally upwardly extending sides, comprising the steps of:a) providing a square or rectangular shaped bottom plate member having a plurality of sides and corner portions;b) forming said bottom plate to provide a raised center portion which slopes downwardly towards said sides;c) breaking each of said sides upwardly to form side wall portions having substantially vertical upwardly extending wall portions, said side wall portions also having sloped bottom wall portions which slope downwardly from said vertical upwardly extending wall portions to meet said center portion of the tank bottom and thereby form a line of flow, said line of flow extending around the perimeter of said center portion and having a downward slope extending from a first one of said corner portions to a second one of said corner portions, said second corner being located diagonally opposite said first corner; andd) forming a drain outlet in the bottom wall portion of one of the side wall portions adjacent said second corner.