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 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.

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 container for displays of goods includes a cardboard base including a first section having first slits and a second section having second slits wherein the first section is adapted to dispose in covering relationship to the second section with the first slits being aligned with the second slits; and a transparent cover including peripheral inserts adapted to insert through the first and the second slits for releasably fastening the cover, the first section, and the second section together. An article of goods is adapted to either place in a space defined by the cover and the first section or remove from the space by detaching the cover from the first section or opening the cover. A person is allowed to touch or try the article of goods by nondestructively removing the cover. Moreover, the removed article of goods can be stored in the container again.

Abstract: A constriction assembly that has a regulator on two ends of head bands and includes a casing seat, the regulator and a pad. By pressing protruding buttons of the regulator support arms formed on both sides of the buttons are displaced and driving turning bodies to disengage the chuck groves from the projection pieces of the band so that the band can reach a loosened state. In contrary, the band can be constricted by pulling the ends of the band while the protruding buttons are free of pressure.

Abstract: A strap structure used as a strap for an object such as mask or swim fin is disclosed. The object has a locking receptacle on either side. The strap structure includes an elastic strap having a coupling member at either end, the coupling member being adapted to releasably secure to the locking receptacle; and an adapting assembly having one end adapted to releasably secure to the coupling member and the other end releasably secure to the locking receptacle. Moreover, the adapting assembly includes one or more adapters so that the strap structure is adapted to secure around one of the different objects with various sizes.

Abstract: A strap structure used as a strap for an object such as mask or swim fin is disclosed. The object has a locking receptacle on either side. The strap structure includes an elastic strap having a coupling member at either end, the coupling member being adapted to releasably secure to the locking receptacle; and an adapting assembly having one end adapted to releasably secure to the coupling member and the other end releasably secure to the locking receptacle. Moreover, the adapting assembly includes one or more adapters so that the strap structure is adapted to secure around one of the different objects with various sizes.

Abstract: A valve mounted on a dive mask is disclosed. The mask has a closed window frame, a soft skirt extending rearward from the window frame for defining a space between itself and the face of a diver wearing the mask, and one or two windows defined by the window frame. The valve is flexible, tubular and has a first opening at one end in communicating with the space, and a second opening at the other end. The second opening is blocked in an inoperative position and is adapted to open to expel water or air therethrough by increasing pressure in the space or by pressing both sides of the valve.

Abstract: A valve mounted on a dive mask is disclosed. The mask has a closed window frame, a soft skirt extending rearward from the window frame for defining a space between itself and the face of a diver wearing the mask, and one or two windows defined by the window frame. The valve is flexible, tubular and has a first opening at one end in communicating with the space, and a second opening at the other end. The second opening is blocked in an inoperative position and is adapted to open to expel water or air therethrough by increasing pressure in the space or by pressing both sides of the valve.

Abstract: In one embodiment a dive mask for use in swimming, diving including, or one of other water sports activities, includes a flexible skirt adapted to sealingly cover the face; a frame mounted around a front opening of the skirt for covering the eyes and including one or two lenses fitted therein; a flexible strap interconnecting two ends of the frame, the strap adapted to hold the dive mask on the head; and a nose enclosure formed with the skirt and disposed under, the nose enclosure being adapted to sealingly cover the nose. The nose enclosure includes a flexible portion at either side such that a pressing of the flexible portions with the hand, as a first step of “ear pressure equalization” act prior to diving, will stretch same substantially without causing movement of a peripheral edge of the skirt.

Abstract: A water introduction mechanism (either a slit or hole) on the skirt, frame or lens of the mask, which can be opened and closed while the mask is worn to introduce water to wash out fog on the lens. The incoming water may be directed towards the lens by a tab. The water introduction mechanism can be at a variety of different locations on the mask. Where the water introduction mechanism is located on a soft part of mask, (such as the skirt), under normal circumstances, ambient water pressure will prevent the hole from opening. However, under additional external force from the user, the soft part will deform and allow water to enter the mask. The incoming water washes away the fog vapor. The user then ceases applying external force to the soft part, and the hole closes. The water introduction mechanism on the soft part of the mask can also be in the form of a “zipper” or “faucet” type device to selectively admit water into the mask interior while it is one the user's face.

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: A snorkel includes a mouthpiece; a flexible breathing tube having a lower end formed with the mouthpiece and an upper open end for communicating air from the mouthpiece to the external; and a telescopic member securely put on the breathing tube. The breathing tube can be flexed and the telescopic member can be retracted so as to reduce the size of the snorkel for ease of carrying or storage. To the contrary, the telescopic member can be extended for disposing in a ready state.