Abstract: Provided is a lightweight lens retainer's diving mask comprising a waterproof plastic head covering, a frame formed forwardly of the head covering, the frame including holes spaced around its inner edge, an integral, elongate lens including two notches formed at both sides of its nose portion, and a separate retainer including tabs spaced around its outer edge, and two projections formed at both sides of its nose portion. The lens is fitted in an innermost position of the frame, the retainer is disposed forwardly of the lens, the projections are inserted into the notches, and the tabs are inserted into the holes for sealingly assembling the frame, the lens, and the retainer together by a retaining operation. The invention has advantages such as reliable fastening, lightweight, reduction in the cost related to machining and molding.

Abstract: Provided is a lightweight lens retainer's diving mask comprising a waterproof plastic head covering, a frame formed forwardly of the head covering, the frame including holes spaced around its inner edge, an integral, elongate lens including two notches formed at both sides of its nose portion, and a separate retainer including tabs spaced around its outer edge, and two projections formed at both sides of its nose portion. The lens is fitted in an innermost position of the frame, the retainer is disposed forwardly of the lens, the projections are inserted into the notches, and the tabs are inserted into the holes for sealingly assembling the frame, the lens, and the retainer together by a retaining operation. The invention has advantages such as reliable fastening, lightweight, reduction in the cost related to machining and molding.

Abstract: A swim goggles comprises a frame including two frame elements, two arcuate grooves, and extensions on either end, two fastening assemblies on either side each including an inner buckle member, two opposite gaps, a tongue between gaps, two inner rails, a groove between rails with the guide rails inserted therein for fastening frame elements, and a slit, a lens assembly including a main lens, two side lenses, two protrusions at a bridge thereof with the lens assembly fitted in arcuate grooves, a rear mask assembly including an annular flange, a flared protective covering, an annular groove fitted with the lens assembly, latched members, and two holes, and a strap passed through slits from one side of the frame to the slits on the other side of the frame for coupling fastening assemblies together.

Abstract: A water drain groove in a diver mask, the diver mask involving a mirror-frame shaped face mask, inside the mask is a soft-toned inside flange, at the middle of the lower half of the inside flange is a nose part, at the bottom side of the nose part is a hole, to the hole is joined a water drain unit, characterized in that: the rim of the water drain unit is buried in the hole of the nose part, the water drain unit has a connecting frame part, the connecting frame part protrude outward, at the bottom side of the nose part is the formation of a outward extended ring part which serves to guide the water and prevent water from flowing in, spaced at the middle of a ring-shaped connecting frame part are a number of through holes, so designed that the hole at the bottom side of the soft-toned nose part joins with the connecting frame part as one unit, at the middle of the water drain unit is a fixing hole, the fixing hole is joined by a number of connecting strips to the connecting frame part, into the outside of eac

Abstract: A snorkel having improved inlet cap comprising a hose and an inlet cap disposed onto the upper end of the hose. The inlet cap includes a vertical tube having a ventilating hole at a sidewall. The vertical tube further includes a projection that encloses the ventilating hole of the vertical tube. The projection has a hollow configuration and defines an upper and a lower opening, respectively. A covering lid is pivotally disposed onto the upper opening of the vertical tube while the upper opening of the vertical tube is still free to communicate with the outside. The covering lid further includes an extension that partially covers the upper opening of the projection such that the opening of the projection is partially enclosed. As a result, fresh air can be readily sucked into the hose from both the ventilating holes of the vertical tube as well as the opening of the vertical tube. As a result, the diver can be supplied with a great deal of fresh air.