Static structures (e.g. – buildings) – Machine or implement
Patent
1998-03-30
2000-04-11
Friedman, Carl D.
Static structures (e.g., buildings)
Machine or implement
522206, 5250607, 52664, 52669, E04C 330
Patent
active
06047517&
ABSTRACT:
As stamped from sheet metal, a hanger useful for hanging an electrical fixture from a suspended ceiling has a main panel, a lower flange, and an upper flange. Near each of its opposite ends, the hanger is provided with a slot defining a tab. The slot opens at and the tab extends to a projecting edge of the lower flange. Corners defined where the projecting edge of each of the upper and lower flanges meets each of the opposite ends of the hanger and where the slot opens at the projecting edge of the lower flange are rounded approximately to a radius not less than approximately 1/16 inch. Because of the rounded corners, an installer can handle the hanger and can manipulate the tabs with bare hands, without exposure to sharp corners at the corners so defined and so rounded. The slots are spaced equally from the opposite ends of the hanger. A visible indicator is stamped into but not through an expansive surface of the main panel, namely the expansive surface opposite to the expansive surface having the lower and upper flanges projecting therefrom. Because the visible indicator is centered between the opposite ends of the hanger, measuring a centerline between the opposite ends of the hanger and marking the centerline are unnecessary.
REFERENCES:
patent: 4064671 (1977-12-01), Sauer
patent: 4114327 (1978-09-01), Williams
patent: 4426822 (1984-01-01), Gailey
patent: 4545165 (1985-10-01), Carey et al.
patent: 4757663 (1988-07-01), Kuhr
patent: 4927696 (1990-05-01), Berg
patent: 5428930 (1995-07-01), Bagley et al.
S-P Products, Inc., "EZ Bar Hanger System," two undated pages (admitted prior art).
3244 Corporation
Friedman Carl D.
Horton Yvonne M.
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