Trench forming assembly having a counterbuoyancy member and associated method
US5890839A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 25, 1996 |
| Grant date | Apr 6, 1999 |
| Priority date | — |
| Expiry date | Sep 25, 2016 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE03F3/046
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A trench forming assembly for forming a trench of predetermined shaped is disclosed according to the present invention. The assembly includes a pair of elongate frame members for defining a support surface for supporting a trench cover and at least one downwardly extending leg attached to each frame member for anchoring the frame members in a predetermined location. The assembly also includes a form body for shaping a hardenable trench forming composition into the predetermined shape of the trench and having an upper surface, opposed side surfaces and a bottom surface. The trench forming assembly further includes at least one counterbuoyancy member extending between the frame members and having a generally downwardly facing engagement surface for operatively engaging a portion of the upper surface of the buoyant form body between the frame members. The counterbuoyancy member can also have an upper surface, opposite the engagement surface, for operatively engaging the elongate frame members. Accordingly, the combination of the counterbuoyancy member, the pair of elongate frame members and the downwardly extending legs cooperate to substantially counterbalance the buoyant form body a…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.