Method of manufacture for metal trough

Details Method of manufacture for metal trough Method of manufacture for metal trough

1983-05-05

1984-05-01

Ramsey, Kenneth J.

Metal working

Means to assemble or disassemble

Puller or pusher means, contained force multiplying operator

138163, 228155, 228214, B21D 1914, B21D 5104

Patent

active

044452608

ABSTRACT:
A flanged trough is provided having flanges along each side of the trough with a smooth continuous curve between the flanges and the body of the trough and a bar of metal welded along the underside of each longitudinal edge of the metal sheet before the flanges are formed. The junction between the metal bars and the flanges and the welds can be covered with a sealant to form a sanitary seal. A lid and gasket can be placed over the trough to seal the contact area of material in the trough from the junction between the metal bars and the flanges of the trough to form a weather-tight, dust-tight and gas-tight conduit.

REFERENCES:
patent: 1133692 (1915-03-01), Adams
patent: 2386246 (1945-10-01), Mapes
patent: 3433269 (1969-03-01), Sackett, Sr.
patent: 4090604 (1978-05-01), Reifert
patent: 4101065 (1978-07-01), Novikov et al.
patent: 4349220 (1982-09-01), Carroll et al.
"Welding Terms and Definitions," AWS publication A30-76, American Welding Society, Miami, Florida, 1976.

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