Static structures (e.g. – buildings) – Window or window sash – sill – mullion – or glazing – Decorative grill attached to sash
Patent
1987-11-19
1988-07-19
Murtagh, John E.
Static structures (e.g., buildings)
Window or window sash, sill, mullion, or glazing
Decorative grill attached to sash
52228, 52300, E04B 254, E06B 100
Patent
active
047576561
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 rigid structure. A charge of mortar is introduced into the space within the masonry block courses to envelop the portions of the reinforcing rods disposed in the space.
REFERENCES:
patent: 2325614 (1943-08-01), Klaber
patent: 2627176 (1953-02-01), Levy
patent: 3296758 (1967-01-01), Knudsen
patent: 3334455 (1967-08-01), Russell
patent: 3378969 (1968-04-01), Larger
patent: 3893274 (1975-07-01), Salisbury
patent: 4020612 (1977-05-01), Welch
patent: 4703602 (1987-11-01), Pardo
Flickinger Don J.
Meschkow Jordan M.
Murtagh John E.
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