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US 4,359,278 AGranted
Triaxial focal plane shutter
AssigneeOlympus Optical Co., Ltd.
InventorAkihiko Hashimoto
Life of this patent
Estimating the term…
Abstract
A triaxial focal plane shutter includes a second blind winding drum which is rotatably supported by a pair of support members disposed above and below it. A first blind winding shaft extends through the second blind winding drum and the pair of support members, and fixedly carries a pair of first blind winding pulleys on its upper and lower ends, thereby allowing an independent rotation of the second blind winding drum and the first blind winding pulleys.
Claims7
A triaxial focal plane shutter including:
- a first take-up drum for a first shutter blind;
- a second take-up drum for a second shutter blind;
- a first blind winding shaft;
- a second blind winding drum;
- a pair of first blind winding pulleys, said second blind winding drum being rotatably supported by a pair of support members disposed above and below it;
- said first blind winding pulleys being mounted on an upper and a lower end of said first blind winding shaft which extends through both said second blind winding drum and said pair of support members to points above and below said support members such that said first blind winding pulleys are rotatable independently of said second blind winding drum.
3 more elements
Dependencies are inferred from the claim text.