Bierman, Muselian and Lucas
Apparatus for closing a film gate in a film cartridge in a single-use camera
 The single-use camera has a main body in which is housed the film cartridge and around which a cover member is formed. On the main body of the camera is a closure and a spring which are used to close the light-shield cover in the film gate of the cartridge when the cover is opened to remove the film cartridge. 
Konica Corporation
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Osamu Shuri Hitoshi Masami Masaru Tetsufumi
Shibazaki Mizoguchi Ohkubo Fujita Yamazaki Takaba