Interlocking device for indication in the finder of a single-len

Details Interlocking device for indication in the finder of a single-len Interlocking device for indication in the finder of a single-len

1978-05-17

1979-12-25

Griffin, Donald A.

354155, G03B 1720, G03B 1912

Patent

active

041803116

ABSTRACT:
An indicator device extending into the optical path of a removable mirror box is controlled by a spring biased coupling system mounted on the box. A coupling gear in the coupling system meshes with a drive gear on the camera body and is provided with a locking mechanism for securing the position of the indicator when the mirror box is removed.

REFERENCES:
patent: 3630133 (1971-12-01), Shimomura
patent: 3630134 (1971-12-01), Nakamura
patent: 3668993 (1972-06-01), Kurie
patent: 4087829 (1978-05-01), Veda et al.

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