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    • 4. 发明授权
    • Film cassette and method of assembling the same
    • 胶片盒及其组装方法
    • US4931819A
    • 1990-06-05
    • US379743
    • 1989-07-14
    • William C. AtkinsonRoger A. Fields
    • William C. AtkinsonRoger A. Fields
    • G03B17/30
    • G03B17/30
    • A film cassette is disclosed wherein a filmstrip in roll form is stored within the cassette shell and has a leader that projects from an exterior end of a film passage slit in the cassette shell to permit the filmstrip to be drawn out of the shell. According to the invention, the leader has a forward edge portion that is folded back onto a successive portion of the leader to prevent the leader from being moved completely through the exterior end of the film passage slit into the cassette shell. Preferably, the forward edge portion of the leader is secured to the successive portion of the leader to form a looped portion of the leader between the forward edge and successive portions which may be engaged in a camera, for example, to draw the filmstrip out of the cassette shell.
    • 公开了一种胶片暗盒,其中卷筒形式的胶卷被存储在盒壳内,并且具有从胶卷盒外壳中的胶片通道狭缝的外端伸出的引导件,以允许胶片从外壳中拉出。 根据本发明,引导件具有向前边缘部分,其折回到引导件的连续部分上,以防止引导件完全移动通过胶片通道狭缝的外端进入盒壳体。 优选地,引导件的前边缘部分固定到引导件的连续部分,以在前部边缘和连续部分之间形成引导件的环形部分,其可以接合在相机中,例如将胶片拉出 盒式外壳。
    • 5. 发明授权
    • Film cassette
    • 胶片盒
    • US4913368A
    • 1990-04-03
    • US379745
    • 1989-07-14
    • William C. Atkinson
    • William C. Atkinson
    • G03B17/30
    • G03B17/30
    • A film cassette is disclosed wherein a filmstrip in roll form is stored within the cassette shell and has a leader portion that projects from an exterior end of a film passage slit in the cassette shell to permit the filmstrip to be drawn out of the shell. According to the invention, a tow bar is secured to the leader portion. The tow bar normally is positioned in covering relation with the exterior end of the film passage slit to prevent the leader portion from being moved into the cassette shell and includes an engageable portion which may be engaged in a camera, for example, to separate the tow bar from the cassette shell to draw the filmstrip out of the shell for exposure purposes.
    • 公开了一种胶片暗盒,其中卷筒形式的胶卷被存储在盒壳内,并具有从盒壳中的胶片通道狭缝的外端突出的引导部分,以允许胶片从外壳中拉出。 根据本发明,牵引杆固定到引导部分。 拖杆通常定位成与膜通道狭缝的外端覆盖关系,以防止引导部分移动到盒壳体中,并且包括可接合在相机中的可接合部分,例如以分离丝束 从盒式外壳中将条子从外壳中拉出以用于曝光目的。