Foldable water tank with shielded hinges
US7938291B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 12, 2007 |
| Grant date | May 10, 2011 |
| Priority date | — |
| Expiry date | Feb 6, 2029 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE04H4/005
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A foldable water tank includes a foldable receptacle having a bottom wall and vertical sidewalls; and a folding frame to support the sidewalls in an upright position. The frame has first, second, third and fourth upper rails joined end-to-end. The frame has a folded position wherein the upper rails are adjacent to each other. First hinges disposed at end portions of said upper rails pivotably connect the upper rails. The second and fourth rails each includes first and second sections having adjacent end portions. Second hinges connect the adjacent end portions to allow the second and fourth rails to fold inwardly to be disposed between the first and third rails in the folded position. The second hinges each includes a shield to cover the adjacent end portions thereby to protect a user's hand from being pinched by the adjacent end portions during unfolding or folding of the frame.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.