发明名称 |
Film winding safety mechanism |
摘要 |
A film winding safety mechanism is disclosed in which film metering and shutter-actuator mechanisms are driven from a sprocket wheel which is driven by film only when the film is properly loaded in a camera to be advanced by rotation of a take-up spool. The safety mechanism is disabled when no cartridge is installed in a manner such as to permit test operation of the camera shutter.
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申请公布号 |
US4332448(A) |
申请公布日期 |
1982.06.01 |
申请号 |
US19800207672 |
申请日期 |
1980.11.17 |
申请人 |
KEYSTONE CAMERA CORPORATION |
发明人 |
ZAWODNY, ARTHUR |
分类号 |
G03B1/24;G03B17/30;G03B43/00;(IPC1-7):G03B1/00;G03B17/26 |
主分类号 |
G03B1/24 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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