Camera with film winder retractable to facilitate film loading

Details Camera with film winder retractable to facilitate film loading Camera with film winder retractable to facilitate film loading

1999-08-10

2001-11-13

Mahoney, Christopher E. (Department: 2851)

Photography

Camera detail

Body structure or housing

C396S411000

Reexamination Certificate

active

06317568

ABSTRACT:

FIELD OF THE INVENTION
The invention relates generally to the field of photography, and in particular to a camera with a film winder that is retractable to facilitate film loading into the camera. More specifically, the invention relates to a film winder that is retracted when a film door is unlatched.
BACKGROUND OF THE INVENTION
It is generally known for a camera to include a rotatable film winder that coaxially engages the slightly protruding end of a film spool inside a film cartridge in the camera, to rotate the film spool in order to wind a filmstrip onto the film spool. The film spool is incrementally rotated after each exposure to wind successive exposed frames of the filmstrip into the film cartridge. Alternatively, the film spool is continuously rotated after the last exposure to wind the entire length of the filmstrip into the film cartridge. Typically, the film winder is retractable from the slightly protruding end of the film spool to facilitate film loading (or unloading), i.e. cartridge loading, into the camera.
Often, as described for example in prior art U.S. Pat. No. 3,602,121 issued Aug. 31, 1971, and U.S. Pat. No. 4,887,114 issued Dec. 12, 1989, a latch member is movable into engagement with a film door to a chamber for the film cartridge in order to secure the film door closed and is movable out of engagement with the film door in order to permit the film door to be opened for film loading. The latch member is mechanically connected with the film winder to retract the film winder from the slightly protruding end of the film spool when the latch part is moved out of engagement with the film door.
SUMMARY OF THE INVENTION
A camera comprising a rotatable film winder that coaxially engages a film spool to rotate the film spool in order to wind a filmstrip onto the film spool and that is retractable from the film spool to facilitate film loading into the camera, is characterized in that:
a flexible cord is connected to the film winder to be pulled to retract the film winder.
Preferably, a chamber is provided for the film spool, a film door is closed to cover the chamber and is opened to uncover the chamber, and a latch member is movable into engagement with the film door to secure the film door closed and out of engagement with the film door to permit the film door to be opened and is connected with the flexible cord to pull the flexible cord to retract the film winder when the latch member is moved out of engagement with the film door.


REFERENCES:
patent: 3589639 (1971-06-01), Engelsmann et al.
patent: 3602121 (1971-08-01), Ernisse
patent: 4363547 (1982-12-01), Hashimoto et al.
patent: 4455074 (1984-06-01), Wong et al.
patent: 4887114 (1989-12-01), Yamamoto et al.
patent: 5105211 (1992-04-01), Kameyama
patent: 5530509 (1996-06-01), Kuhn, Jr. et al.
patent: 6148155 (2000-11-01), Yasumaru

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