Optics: eye examining – vision testing and correcting – Spectacles and eyeglasses – Floating or underwater type
Reexamination Certificate
2005-07-26
2005-07-26
Dang, Hung Xuan (Department: 2873)
Optics: eye examining, vision testing and correcting
Spectacles and eyeglasses
Floating or underwater type
C002S428000, C002S430000
Reexamination Certificate
active
06921165
ABSTRACT:
This watertight lens assembly structure provides panoramic-viewing for a diving mask without having the lenses glued together. The lenses are instead self-sealing, due to an assembly process in which, as the preferred embodiment indicates, at least one frontal lens and at least one side lens are attached to, via a layer of elastic gasket medium, either one or both surfaces of the contacting edges of the frontal and side lenses and a lens assembly ring presses against the frontal lens and side lens simultaneously, forcing compression against the elastic gasket medium at the contacting edges of the two lenses and securing both lenses to the mask frame. The result is a watertight seal, achieved without adhesives, at the contacting edges of the front and side lenses. This process reduces storage space, packaging size and transporting costs during mass production. Also, this non-glued and removable self-sealing lens assembly allows individuals to easily replace a lens that is broken, scratched or corrected for near or far-sighted vision.
REFERENCES:
patent: 6341863 (2002-01-01), Chen-Lieh
Dang Hung Xuan
Trojan Law Office
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