Cartridge status indicator

Details Cartridge status indicator Cartridge status indicator

1996-02-28

1997-09-09

Mathews, Alan A.

Photography

Having camera indicator

Film condition indicator

396515, 396538, G03B 1736, G03B 1726

Patent

active

056665750

ABSTRACT:
A camera includes a chamber for containing a film cartridge having a rotatable film spool with external engagement access to allow rotation of the spool. The chamber is closed by a lighttight door having a cavity including a status indicator member for determining the status of a contained film cartridge. The status indicator member is attached a cartridge engagement member which is rotatable with the cartridge film spool. The status indicator member includes a display disk for indicating the status of said cartridge based on the rotational position of said spool which is visible through an opening in the chamber door.

REFERENCES:
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patent: 5023642 (1991-06-01), Pagano
patent: 5105211 (1992-04-01), Kameyama
patent: 5248108 (1993-09-01), Zander
patent: 5255034 (1993-10-01), Shimada et al.
patent: 5296887 (1994-03-01), Zander
patent: 5351102 (1994-09-01), Tsuji et al.
patent: 5357302 (1994-10-01), Kawamura et al.
patent: 5463435 (1995-10-01), Ezawa
patent: 5497213 (1996-03-01), Yoshida et al.

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