发明名称 |
Film advance mechanism for motion picture apparatus |
摘要 |
A motion picture apparatus and method for intermittently advancing motion picture film by forced air. The film is initially placed into successive loops formed by a cam-driven flipper. The loops and thus the film are advanced through the projector or camera pathway by a forced air blower which propels the successive loops through a projection pathway. Vacuum pressure may also be applied to the film through a gate to secure the film to the gate with linearly arranged register pins steadying the film over a projection aperture. The film is rewound through the projector by a motorized rewind with a positive pressure applied to the film through the gate.
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申请公布号 |
US5841514(A) |
申请公布日期 |
1998.11.24 |
申请号 |
US19970835095 |
申请日期 |
1997.04.04 |
申请人 |
IWERKS ENTERTAINMENT, INC. |
发明人 |
SCHMIDT, LELAND R. |
分类号 |
G03B1/36;G03B1/52;(IPC1-7):G03B1/00 |
主分类号 |
G03B1/36 |
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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