Wide viewfield underwater mask
First Claim
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1. A wide viewfield underwater mask comprising:
- a main body with a resilient member conforming to the diver'"'"'s face at the eyes and nose area and with a symmetry mid-axis at the nose;
a base frame connected to said resilient member and provided with an opening at each of the diver'"'"'s eyes, said openings being bound by an upper edge, a lower edge, and inner and outer side edges which define a symmetrical contour about said symmetry mid-axis and lying in a substantially perpendicular plane to the diver'"'"'s sight axis;
a transparent eye-plate holding half-frame for each of said openings provided with an edge defining a contour fitting within that of the corresponding opening of the base frame;
a first connection means for securing each half-frame tightly on the base frame at its associated opening;
first and second openings on each half-frame bound by respective contour edges;
said first opening lying in a substantially perpendicular plane to said sight axis, and said second opening lying in a plane forming an angle greater than 90° and
less than 180°
, with that of the first opening and extending toward the lower edge of the corresponding opening of the base frame;
first and second transparent plates respectively fitting within said first and second openings of each half-frame; and
a second connection means for securing said first and second transparent plates tightly in their respective first and second openings of each half-frame.
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Abstract
This invention relates to an underwater mask which has on the front two plates made of a transparent material for front vision, and two further transparent plates placed beneath the former and forming an angle greater than 90° and less than 180° therewith. The second pair of clear plates afford peripheral vision down the diver'"'"'s pectoral region.
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Citations
5 Claims
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1. A wide viewfield underwater mask comprising:
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a main body with a resilient member conforming to the diver'"'"'s face at the eyes and nose area and with a symmetry mid-axis at the nose; a base frame connected to said resilient member and provided with an opening at each of the diver'"'"'s eyes, said openings being bound by an upper edge, a lower edge, and inner and outer side edges which define a symmetrical contour about said symmetry mid-axis and lying in a substantially perpendicular plane to the diver'"'"'s sight axis; a transparent eye-plate holding half-frame for each of said openings provided with an edge defining a contour fitting within that of the corresponding opening of the base frame; a first connection means for securing each half-frame tightly on the base frame at its associated opening; first and second openings on each half-frame bound by respective contour edges; said first opening lying in a substantially perpendicular plane to said sight axis, and said second opening lying in a plane forming an angle greater than 90° and
less than 180°
, with that of the first opening and extending toward the lower edge of the corresponding opening of the base frame;first and second transparent plates respectively fitting within said first and second openings of each half-frame; and a second connection means for securing said first and second transparent plates tightly in their respective first and second openings of each half-frame. - View Dependent Claims (2, 3, 4, 5)
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Specification