Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
173 words
A means for opening the cover of a film cassette comprising a light shielding cover for shielding a cassette loading portion from ambient light, said light shielding cover being movable between a closed position and an opened position, a projection means for opening the cover of the film cassette by engagement with a co-acting cover locking means of the film cassette when the film cassette is pushed forward in the cassette loading portion, and a control member pivotally mounted between said light shielding cover and said projection means, said control member having an engagement preventing portion for interrupting said engagement of the projection means and said hole and being associated with said light shielding cover so that said engagement preventing portion can be brought into position to interrupt said engagement when said light shielding cover is in the open position and retracted from said position when the cover is in the closed position, whereby the cover of the film cassette is opened only after the light shielding cover is in the closed position.
Claim 2
Dependent Claim
173 words
A means for opening the cover of a film cassette comprising a light shielding cover for shielding a cassette loading portion from ambient light, said light shielding cover being movable between a closed position and an opened position, a projection means for opening the cover of the film cassette by engagement with a co-acting cover locking means of the film cassette when the film cassette is pushed forward in the cassette loading portion, and a control member pivotally mounted between said light shielding cover and said projection means, said control member having an engagement preventing portion for interrupting said engagement of the projection means and said hole and being associated with said light shielding cover so that said engagement preventing portion can be brought into position to interrupt said engagement when said light shielding cover is in the open position and retracted from said position when the cover is in the closed position, whereby the cover of the film cassette is opened only after the light shielding cover is in the closed position.
Claim 3
Dependent Claim
88 words
A means for opening the cover of a film cassette according to claim 1 wherein said light shielding cover is pivotally mounted above said cassette loading portion and is associated with one end of said control member to urge said control member to its retracted position, and said control member is urged to move into said interrupting position by a lesser force than that required to urge said cover into the closed position, whereby the control member is held in its retracted position when the cover is closed.
Claim 4
Dependent Claim
37 words
A means for opening a cover of a film cassette according to claim 2 wherein said control member is pivotally mounted on a fixed shaft and urged to move into the interrupting position by its own weight.
Claim 5
Dependent Claim
61 words
A means for opening a cover of a film cassette according to claim 1 further comprising a flexible light shielding member attached to said light shielding cover, whereby the film cassette can be pushed in by the tail end thereof with a hand from outside the flexible light shielding member after the cover is closed with the flexible light shielding member.
Claim 6
Dependent Claim
26 words
A means for opening a cover of a film cassette according to claim 4 wherein said flexible light shielding member is an opaque, bellows-type flexible material.