Lintel system
US4757656A · kind A · utility
Inventor
Key dates
| Filing date | Nov 19, 1987 |
| Grant date | Jul 19, 1988 |
| Priority date | — |
| Expiry date | Nov 19, 2007 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE04C2003/023
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A lintel system includes a steel flange plate adapted to rest on the wall adjacent both sides of an opening to be spanned, a steel reinforcing structure integral with the flange plate and steel primary reinforcing rods welded to the reinforcing structure and extending upwardly. After the flange plate has been emplaced, two courses of masonry blocks are laid to encompass the primary reinforcing rods. Different embodiments of the invention employ different upper structures. In a first embodiment, a wooden beam directly overlays the upper plate, and each includes apertures generally aligned with and larger than the primary reinforcing rods, each of which is threaded to receive a nut along its terminal portion such that the nuts may be tightened to compress the lintel system into a rigid structure. In the second embodiment, the lintel system also includes secondary reinforcing rods welded to the lower face of the upper plate and extending downwardly into the interior space of the masonry blocks. Upwardly directed steel studs are welded to the upper face and extend through the apertures in the beam and the top plate such that nuts may be tightened to compress the lintel system into a ri…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.