Removable insert for forming recess
US5651911A · kind A · utility
Inventor
Key dates
| Filing date | Nov 2, 1995 |
| Grant date | Jul 29, 1997 |
| Priority date | — |
| Expiry date | Nov 2, 2015 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB28B23/0056
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A removable insert for forming a recess in wet concrete which locates a pulling iron or anchor in wet concrete, and when the concrete hardens the insert is removed, and the anchor may be engaged by a hook and cable to move the resultant concrete structure. The insert, which may be placed at any desired location in the concrete structure, is of a resilient, molded elastomeric material with a central opening to engage the pulling iron or anchor, with a slot therein, which is closed or shaped and which may have a V-shaped removable wedge in the slot. The insert is molded with a flat top with sloping sides, extending downwardly therefrom to a semicircular bottom surface, with threaded inserts in the top which have bolts inserted therein for fastening the insert to a plate and for squeezing to open the slot to permit withdrawal of the insert from the pulling iron or anchor, and which provides a recess, which contains the anchor. The top plate may also have magnets or glue or double-faced tape thereon for attachment to a plate which forms a portion of the mold for the concrete structure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.