1975-07-07
1977-04-12
Gonzales, John
350257, G03B 1700
Patent
active
040178781
ABSTRACT:
A bayonet mount adapter for attaching a screw-mount lens barrel to a camera of the bayonet mount type is provided. The adapter has a cylindrical sidewall portion extending between a flange and external adapter claws. The sidewall portion has an outer circumference sized to be received within the internal claws of the bayonet mount. A leaf spring having one end fixed to the sidewall tangentially extends to an opposite end disposed radially outward of the outer circumference of the sidewall. Upon positioning the adapter in the bayonet mount, the leaf spring is biased by the internal claws of the camera bayonet mount to a position within the outer circumference of the sidewall and the adapter is rotated to a stop position wherein the internal claws of the camera bayonet mount are entrapped between the flange and the external adapter claws of the mount adapter. At the stop position, the second end of the leaf spring is free to move radially outward into engagement with a rotation stopper fixed to the bayonet mount. The leaf spring can be manually biased out of engagement with the rotation stopper for purposes of rotating and disengaging the adapter from the bayonet mount.
REFERENCES:
patent: 2780137 (1957-02-01), Bourgeois
Asahi Kogaku Kogyo Kabushiki Kaisha
Gonzales John
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