Electric dust-proof device

Details Electric dust-proof device Electric dust-proof device

2007-04-26

2009-11-03

Perkey, W B (Department: 2862)

Photography

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Lens cover

C396S473000, C396S493000, C359S511000

Reexamination Certificate

active

07611295

ABSTRACT:
An electric dust-proof device includes a driving mechanism disposed on a base seat unit, and a dust-proof plate driven by the drive mechanism. The driving mechanism includes a power unit, a drive unit driven by the power unit, a driving seat driven by the drive unit, and a driven seat driven by the driving seat. The dust-proof plate is driven by the driven seat to move between an open position and a close position.

REFERENCES:
patent: 5461441 (1995-10-01), Kotani
patent: 5617167 (1997-04-01), Kaji
patent: 5625852 (1997-04-01), Wada et al.
patent: 6212335 (2001-04-01), Inazuka
patent: 6334718 (2002-01-01), Akiba et al.

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