Blade for focal plane shutter

Details Blade for focal plane shutter Blade for focal plane shutter

1982-02-09

1983-08-30

Tarcza, Thomas H.

354245, G03B 940, G03B 936

Patent

active

044013809

ABSTRACT:
A shutter blade for focal plane shutter, in which the blade thickness is made the thinnest possible by forming a plurality of recesses throughout the whole area, except for the connecting part of the blade with a drive mechanism and the outer peripheral edge of the blade. The recesses are in the regular polygonal shape such as hexagon, square, triangle, and so forth.

REFERENCES:
patent: 2077500 (1937-04-01), Townsend et al.
patent: 2670667 (1954-03-01), Aiken
patent: 3685423 (1972-08-01), Dahlgren
patent: 3984853 (1976-10-01), Bott et al.

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