Title:
COLLAPSIBLE STORAGE TANK FOR LIQUIDS
Document Type and Number:
WIPO Patent Application WO2001081208
Kind Code:
A3
Abstract:
A frameless liquid storage tank (10) and a method of fabricating and pressure testing the liquid storage tank. The tank is collapsible for ease of transportation when not holding a liquid and includes a base portion (11) and a top portion (16). The base portion has a bottom wall (12) and a frusto-conical sidewall (14) that is sealed to the bottom wall. The top portion is sealed to the sidewall, and has a flexible opening (18). The opening is linear in one embodiment and is openable to draw liquid from the tank and closable to prevent contaminants from entering the tank. The bottom wall is substantially circular, and the top portion includes two substantially semicircular sections (36) joined and overlapped along the straight edges to form an overlapped region (38). The sidewall includes generally triangular-shaped sections (24), and the sections are joined to one another with seams (33) that extend in slightly helical fashion about the tank. The opening includes a slit (52) in the overlapped region and two reinforcing members (42) sealed together on the ends (48) thereof. The liquid storage tank may be inverted through the opening for ease in cleaning the tank, and the tank may be filled to capacity on an incline of up to at least 10 degrees without spillage.
Inventors:
JOSHI YATISH J
ADDICOTT LOUISE E
COSTA LARRY J
ADDICOTT LOUISE E
COSTA LARRY J
Application Number:
PCT/US2001/012598
Publication Date:
July 04, 2002
Filing Date:
April 18, 2001
Export Citation:
Assignee:
GTA CONTAINERS INC (US)
International Classes:
B65D6/16; B65D8/04; B65D88/16; (IPC1-7): B65D88/16
Domestic Patent References:
| WO1989006624A1 | 1989-07-27 |
Foreign References:
| US4124049A | 1978-11-07 | |||
| FR2501648A1 | 1982-09-17 | |||
| US5368395A | 1994-11-29 |
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