Abstract: A quick release connector joining a snorkel and a strap is provided. The quick release connector comprises a first fixing member and a second fixing member. The first fixing member comprises a fixing ring and an embedded portion. The fixing ring is adapted to encircle the snorkel. The second fixing member comprises a fixation clip, a pressing portion, and a buckle portion. The fixation clip is adapted to be clamped to the strap, and the pressing portion and the buckle portion are adapted to join together to receive the embedded portion. Thereby, the snorkel and the strap are joined for the connection between the first fixing member and the second fixing member.

Abstract: A swimming goggle structure is provided. The swimming goggle structure comprises a frame assembly and a glass assembly. The frame assembly defines a receiving space and comprises a slot so the glass assembly is adapted to be embedded in the slot. The glass assembly comprises a connecting device and a functional lens. The connecting device extends from the frame assembly outward to a user's eyes. The connecting device has an outer end and an inner end. The outer end is disposed in the slot, while the inner end is connected to the functional lens. The distance between the user's eyes and the outer end of the connecting device is greater than the distance between the user's eyes and the inner end of the connecting device.

Abstract: The improved snorkel dry top has a fulcrum to which a float member and a diaphragm yoke are attached. The fulcrum has a blocking tab that rests in an aperture in the float member attaching hook when the snorkel is above the surface of the surrounding water. The diaphragm yoke cannot rotate the diaphragm when the blocking tab is in the hook aperture. Therefore, even when tilted, the snorkel remains open allowing free flow of air into the snorkel tube. Another significant improvement is the connection of the float member, diaphragm and yoke to the snorkel top's splashguard mask. This improvement assures that the delicate structures of these components are not exposed to potentially destructive impact forces in the event that the splashguard mask is removed from the snorkel tube.

Abstract: A snorkel comprising a breathing tube and a retaining device formed on the breathing tube. The retaining device includes an elongated fastening strap having a bottom end formed integrally with the breathing tube, and a top end formed with a large first hole and a small second hole being in communication with the first hole; and a button formed integrally with the breathing tube and disposed in a position about flush with the top end of the fastening strap. The button is adapted to secure to the fastening strap by passing through the first hole and locking in the second hole in response to passing a mask strap through a gap between the fastening strap and the breathing tube.

Abstract: A buckle includes a strap slidably looped around a strut proximate a front opening of a housing, a spring-biased, lever-like ratchet having front and rear sections and a front engagement tooth adapted to matingly engage with one of a plurality of rack teeth on an upper surface of the strap, and two opposite pivotal arms extending outside of the housing. Pressing the arms will push down the rear section to lift the front section to disengage the engagement tooth from the rack tooth, thereby adjusting the buckle in discrete increments to tighten the strap.

Abstract: In one embodiment a buckle includes at least one rectangular frame having two side members, at least one cross member parallel to and between the side members for dividing an opening formed by the frame into a plurality of slots, and two end members; and at least one strap; wherein a portion of the strap sequentially passes the slots by engaging over each of the at least one cross member is not overlapped with the end of the strap secured to one face of either side member or one face of the cross member. An easy adjustment of the tension of the strap is made possible.

Abstract: The lens assembly for a diving mask is provided. The lens assembly comprises a first lens, a second lens and an intermediate layer. The intermediate layer is made of a liquid material which is capable of being cured and bonded with the first lens and the second lens. Thereby, the lens assembly can prevent the scattering of fragments when the lens assembly is shattered. Furthermore, the second lens is preferably made of the material selected from the group consisting of cellulose acetate, cellulose propionate and the combination thereof for providing the diving mask with better anti-fog ability.

Abstract: A pair of amphibious glasses is provided. The pair of amphibious glasses comprises a lens assembly, a frame assembly, a skirt, and a temple assembly. The lens assembly comprises at least one lens, while the frame assembly defines at least one frame so that the lens can be embedded into the frame. The skirt is detachably attached to one side of the frame assembly and extends outward from the side of the frame assembly. The skirt is adapted to fit against the face around the eyes of the user. The temple assembly is adapted so that the pair of amphibious glasses can firmly fit on the user's face.

Abstract: A mask adapted to be attached to a user's face is disclosed. The mask comprises a body and a gas connection structure. The body is formed with an inner space which is defined along with the user's face. The inner space allows the user to breathe through the nose. The gas connection structure connects to the body so that the inner space is connectable with the ambient air via the gas connection structure. Thereby, the user is capable of breathing through his/her nose to drive the ambient air into the inner space and reduce the moisture formed in the inner space.

Abstract: An adjustable buckle includes a base including a top column; a hollow rectangular sliding plate slidably put on the column and including inclined front and rear ends each falling into a dip between two of a series of ratchet teeth of either strap, two inclined sides, and a resilient assembly secured on the sliding plate; and a cover including two parallel side walls, front and rear struts each with the strap partially wrapped around, and two latches each on the side wall. Pressing the latches will lift the sliding plate with the resilient assembly being compressed, disengage the front and rear ends with the dip, and enable the straps to slide through front and rear openings of the cover, and releasing the latches will cause the sliding plate to fall due to the expanding resilient assembly, and cause the front and rear ends to fall into the dip.

Abstract: An adjustable structure for a strap is provided. The adjustable structure comprises a positioning device, a shaft, and a plurality of female fasteners formed on the surface of the strap. The positioning device has a base and a male fastener pivoted on the positioning device. The male fastener is also disposed at the end of the strap. The shaft is disposed opposite the positioning device. Accordingly, the strap is able to pass through between the base and the male fastener, and return back with respect to the shaft. The male fastener is then adapted to detachably connect with the female fastener, and thus the distance between the positioning device and the shaft is adjustable.

Abstract: A diving mask is provided. The mask comprises a body, at least one lens and at least one elastic frame. The body comprises at least one lens frame. The one lens has a periphery and is disposed correspondingly in the lens frame. The elastic frame is detachably fastened along the periphery of the lens to absorb the impact force and allow the diving mask to float in water.

Abstract: A frame structure for use in goggles is disclosed. The frame structure comprises a main body, which comprises a hard portion and a soft portion. The hard portion is a rigid body, while the soft portion is an elastomer. The soft and the hard portions are molded integrally, wherein the integrally molded portions define at least one receiving space and is adapted to receive at least one lens.

Abstract: A waterproof structure of a respiratory tube is provided. The waterproof structure comprises a hollow body and a lid. The hollow body has a first opening end and a second opening end opposing to the first opening end. The lid pivots onto the hollow body at the first opening end. Before the lid is immersed into liquid, the gravity of the lid can keep the lid at a certain position so that the respiratory tube is well-ventilated. After a part of the lid is immersed into the liquid, the buoyancy provided by the liquid forces the closing surface thereof to substantially seal the first opening end and prevent liquid from going into the tube.