Patent ID: 7426338
Filing Date: 2008-09-16
Classification: G03B,H01H

Abstract:
1. A switch mechanism usable underwater comprising: an exterior member having a first hole and a second hole; a first pressing operation member being watertight against the first hole of the exterior member; a second pressing operation member being watertight against the second hole of the exterior member; first switch means being turned on/off by the first pressing operation member; second switch means being turned on/off by the second pressing operation member; and a lever member being rotatable around a fulcrum being provided in the exterior member, pressing the first pressing operation member at a first contact point when rotating in a first direction, and pressing the second operation member at a second contact point when rotating in a second direction opposite to the first direction, wherein, when a cross-sectional area at a boundary of water and air in a state of the first pressing operation member being inserted into the first hole is defined as S