Metal working – Method of mechanical manufacture – Structural member making
Patent
1993-04-29
1994-01-18
Echols, P. W.
Metal working
Method of mechanical manufacture
Structural member making
29429, 29509, 29514, B23P 1700, B23P 1100, B21D 3900
Patent
active
052790339
ABSTRACT:
A grid beam of inverted T cross section for a suspended ceiling is made from a first strip of metal. A second strip is secured in the bottom of the flange of the beam by flats from the first strip, so that a three-dimensional effect from essentially flat elements results. The second strip can be of a different color as well as a different material or texture than the first strip, so that additionally a color contrast, as well as a material or surface contrast, can be achieved.
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Platt William J.
Rose Thomas E.
Bryant David P.
Chovanes Eugene
Echols P. W.
National Rolling Mills Inc.
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