Counter device for sheet photo film pack

Details Counter device for sheet photo film pack Counter device for sheet photo film pack

1998-07-17

2000-05-16

Gray, David M.

Photography

Having camera indicator

Film condition indicator

396515, 396517, G03B 1724

Patent

active

060648295

ABSTRACT:
A sheet photo film pack includes a pack housing for containing a stack of eight sheet photo film units. The counter device is used with the sheet photo film pack. A counter chamber is formed in the pack housing. A counter disk is contained in the counter chamber rotatably, and has first and second faces. A train of counter numerals are arranged on the first face in an arc-shaped manner at a predetermined pitch. Plural stepping claws are disposed on the first face to project in a thickness direction of the counter disk, arranged in an arc-shaped manner at the predetermined pitch, and rotationally shifted by an external mechanical shift signal. The shift signal is associated with each one of the sheet photo film units to be counted, and adapted to setting the counter numerals in a counter indicator window.

REFERENCES:
patent: 5448324 (1995-09-01), Okano et al.
patent: 5710952 (1998-01-01), Okutsu et al.
patent: 5745807 (1998-04-01), Okutsu et al.

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