A ventilation sole for footwear, the sole including: a communicating vent-hole through which the inside and outside of footwear communicate with each other to allow air to flow; and a valve selectively opening and closing the communicating vent-hole, wherein the valve includes: a housing module configured to have opposite ends being open such that a channel is provided therein to communicate with the communicating vent-hole; an open-close module configured with a first closing surface and a first through-hole; and a rotation module configured with a second closing surface and a second through-hole, and rotating to move a position of the second through-hole. Accordingly, a wearer can easily open and close the valve by rotating the rotation module according to the intention of the wearer, whereby air inside and outside the footwear can be circulated selectively and optimal foot conditions can be improved.
The present invention relates to a shoelace binding device and, more particularly, to a shoelace binding device that is more convenient by allowing shoelaces to be easily tied and untied, simply replaced, and easily pulled. The shoelace binding device includes: a center stopper fixing a first half and a second half of a shoelace at a middle portion of an instep of a shoe; and a buckle holding the first half and the second half of the shoelace at a middle portion of a neck of the shoe. The buckle includes a male buckle member and a female buckle member. The male buckle member has a male buckle body, a guide formed, and an elastic arm. The female buckle member has a female buckle body, a housing, and a side hole formed.
A44B 11/00 - BucklesSimilar fasteners for interconnecting straps or the like, e.g. for safety belts
A44B 11/26 - BucklesSimilar fasteners for interconnecting straps or the like, e.g. for safety belts with two or more separable parts with push-button fastenings
A vortex tube includes a main body, an inlet coupled to the main body and into which compressed air is introduced, an air circulating chamber installed in the main body, a passage channel through which the air introduced through the inlet passes forwards, a vortex generator configured to enable the air to spin in the air circulating chamber, a cold air-outlet through which cold air is discharged outside from the air circulating chamber, and a hot air-outlet through which hot air is discharged outside from the air circulating chamber.
B01D 49/00 - Separating dispersed particles from gases, air or vapours by other methods
B01D 53/24 - Separation of gases or vapoursRecovering vapours of volatile solvents from gasesChemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases or aerosols by centrifugal force
B01D 45/16 - Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by centrifugal forces generated by the winding course of the gas stream
B01D 45/08 - Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by utilising inertia by impingement against baffle separators
B01D 45/12 - Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by centrifugal forces
F25B 9/04 - Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point using Joule-Thompson effectCompression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point using vortex effect using vortex effect
B01D 50/00 - Combinations of methods or devices for separating particles from gases or vapours
A47L 9/16 - Arrangement or disposition of cyclones or other devices with centrifugal action
Disclosed herein are industrial goggles. The goggles include a main body having protective glass and formed to correspond to a curvature of a face. A cover is hinged to one side of the front of the main body. A film unwinding roll has a film thereon. An unwinding-roll holding part vertically holds the film unwinding roll on one side of the main body and includes a stationary locking step, a movable locking step, and an elastic spring. A film winding shaft is provided vertically on the other side of the main body to wind the film from the film unwinding roll. A film feeding lever is coupled to the film winding shaft in a gear coupling manner and hinged to the main body. A ratchet means prevents the film feeding lever from rotating in a reverse direction. An elastic support member supports the main body against the face.
A ventilation sole for footwear, in which an air inlet-outlet is formed in a side of the ventilation sole, vents are formed in an upper portion of the ventilation sole, the vents communicating with the air inlet-outlet, and a device for opening and closing an air inlet-outlet, which is coupled with the air inlet-outlet, supplies ambient air into the footwear. The device for opening and closing an air inlet-outlet is adapted to be opened or closed by a locking or unlocking action when turned, and is disposed in the air inlet-outlet such that it is exposed to the outside. Since the device is opened and closed by the turning action of the button cap, the user can conveniently open or close the air inlet-outlet.
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