Metal working – Foil or other thin sheet-metal making or treating – Method
Patent
1975-06-10
1976-11-16
Weidenfeld, Gil
Metal working
Foil or other thin sheet-metal making or treating
Method
B21D 3300
Patent
active
039914500
ABSTRACT:
A method of separating apertured shadow mask flats after annealing in which a stack of thin flats is passed through a roller leveler, with the rollers set apart by a dimension slightly less than the thickness of the stack.
REFERENCES:
patent: 558457 (1896-04-01), McCarty
patent: 712617 (1902-11-01), Swindell
patent: 2364780 (1944-12-01), De Walt
Burnham James A.
Frey James O.
Sutcliff W. G.
Weidenfeld Gil
Westinghouse Electric Corporation
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