Invention Grant
- Patent Title: Indexing mechanism
- Patent Title (中): 指标机制
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Application No.: US3791622DApplication Date: 1972-01-26
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Publication No.: US3791622APublication Date: 1974-02-12
- Inventor: NUPNAU A
- Applicant: BELL & HOWELL CO
- Assignee: Bell & Howell Co
- Current Assignee: Bell & Howell Co
- Priority: US22095472 1972-01-26
- Main IPC: G03B21/32
- IPC: G03B21/32 ; G03B21/04
Abstract:
An indexing mechanism for sequentially presenting each of a plurality of cassettes containing photographic film to a projection station in a film projector. The indexing mechanism includes a pair of stop members that are alternately placed in and out of engagement with an abutment on the cassette.
Information query
