Hamre, Schumann, Mueller & Larson, P.C.
Dustfree and waterproof rolling-ball optical mouse
A dustfree and waterproof rolling-ball optical mouse includes a concave housing; a rolling ball movably engaged with the concave housing; a dustproof gasket fixed on the concave surface of the concave housing; a leakage hole of a conduit defined in a center of the concave surface of the concave housing; an aperture for allowing light through which is eccentrically defined in the bottom of the concave surface of the concave housing; and a waterproof tab formed around the edge of the aperture.
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G06F G06F
inventional inventional
Wei Gao
Li