Static structures (e.g. – buildings) – Installed screed or unit with specified feature retaining...
Patent
1983-03-31
1985-04-30
Ridgill, Jr., James L.
Static structures (e.g., buildings)
Installed screed or unit with specified feature retaining...
E04C 316
Patent
active
045135517
ABSTRACT:
A structural support made of sheet metal or like material has a surface (2,3) intended to support a building panel or some other structural member, which is secured to the surface by means of screws or like fasteners. In order to reduce the force required to drive the screws or like fasteners, such as nails, into the support, the aforementioned surface is provided with closely lying weakened areas within a fastening area (9,10), the points of the fasteners being guided into the weakened areas by inclined surfaces adjacent thereto.
REFERENCES:
patent: 1701304 (1929-02-01), Jones
patent: 2553363 (1951-05-01), Droeger
patent: 2706315 (1955-04-01), Price
patent: 3108406 (1963-10-01), Ellis
patent: 3129792 (1964-04-01), Gwynne
patent: 3270472 (1966-09-01), Gilbert
patent: 3309119 (1967-03-01), Phillips
patent: 4085558 (1978-04-01), Albrecht
Gauffin Ulf
Hellsten Mikael
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