Concrete forming system with brace ties
US5709060A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 30, 1995 |
| Grant date | Jan 20, 1998 |
| Priority date | — |
| Expiry date | Mar 30, 2015 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE04B2002/0206
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A form tie for joining the sidewalls of a polymeric concrete form comprises a pair of end trusses with an intermediate web truss. Each end truss comprises an interior vertical strut and a longer exterior strut with interior and exterior pairs of horizontal struts extending therebetween. Upper and lower rectangular trusses and an intermediate truss are formed within each truss and rigidified by diagonal struts extending between the ends of the exterior vertical strut and interior vertical strut. The exterior struts of each end truss are coplanar with the exterior sidewall surface with the interior strut of each end truss being coplanar with the interior sidewall surface. The coplanar relationship of the struts serve as a visual gauge that the form with tie has been properly manufactured and assures that the end trusses extend throughout the width of each sidewall. End ties having a height of one-half of the form sidewall are extended between the sidewalls at the ends of each form. The end ties of adjacent forms are vertically offset to enhance concrete flow therebetween. During transport and use the trusses resist the presence of compression, tension, twisting and other forces actin…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.