Patent Publication Number: US-2007095343-A1

Title: Diving mask

Description:
BACKGROUND OF THE INVENTION  
      a) Field of the Invention  
      The present invention relates to a diving mask, and more particularly to a diving mask wherein at least one draining guide protruded outward is located at a proper position of a bottom of pressure equalizers protruded inward in a nosepiece of the diving mask. In addition to equalize ear pressure, the pressure equalizers of the draining guides can also drain the permeated water in the mirror into a bottom of the nosepiece to completely expel out the permeated water, thereby avoiding the water to be remained in the mirror of mask, and causing an insufficient vision to the diver.  
      b) Description of the Prior Art  
      Referring to  FIG. 1 , a conventional diving mask  100  is composed of a frame  101 , a mask  102 , and a mirror  103 , wherein a ring of skirt  1021  is surrounding a periphery of the silicon mask  102  to fit over a face of a diver, and a nosepiece  1022  is protruded out from a center to cover on a nose of the diver. Pressure equalizers  1023  protruded inward are located at two sides of the nosepiece  1022  respectively. The pressure equalizers  1023  are located at nasal wings of the diver, so that the diver can put fingers into outsides of the pressure equalizers  1023  and pinch the nostrils for equalizing ear pressure under water. However, due to factors such as water pressure and a facial shape of a wearer, etc, sea water will usually permeate into the mask  100  and mostly stay in the nosepiece  1022  and a bottom of the mirror  103 . Therefore, to expel out the permeated water in the mask  100 , the diver must lift up the bottom of mask  100  to leave a gap, and to blow hard with the nose to expel the permeated water. In a practical operation, the permeated water in the nosepiece  1022  of the mask  100  is easier to be expelled, whereas the permeated water at the bottom of the mirror  103  cannot smoothly flow into the nosepiece  1022  by a separation of the pressure equalizers  1023  protruded inward, thereby not easily to be expelled. As the sea water which remains in the mirror  103  will affect a vision of the diver, it has always been troubling the diver.  
     SUMMARY OF THE INVENTION  
      The primary object of the present invention is to install at least one draining guide protruded outward at a proper position of a bottom of pressure equalizers protruded inward in a nosepiece of the diving mask, wherein in addition to equalize ear pressure, the pressure equalizers of the draining guides can also smoothly drain the permeated water in the mirror into a bottom of the nosepiece to completely expel out the sea water permeated into the diving mask, thereby avoiding the water to be remained in the mirror of mask, and causing a trouble to the diver.  
      To enable a further understanding of the said objectives and the technological methods of the invention herein, the brief description of the drawings below is followed by the detailed description of the preferred embodiments. 
    
    
     BRIEF DESCRIPTION OF THE DRAWINGS  
       FIG. 1  shows a perspective view of a conventional product.  
       FIG. 2  shows a perspective view of the present invention.  
       FIG. 3  shows a perspective view of compartments of a draining device of the present invention.  
       FIG. 4  shows a cutaway view of a draining device of the present invention. 
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS  
      Referring to  FIG. 2 , a diving mask  1  of the present invention comprises primarily a frame  10  made of a hard material, a mask  20  made of a soft material, and a mirror  30 , wherein a ring of skirt  201  is surrounding a periphery of the silicon mask  20  to fit over a face of a diver, and two pressure equalizers  203  protruded inward are located at two sides of a nosepiece  202  which is protruded outward in a center. The diver can put fingers into outsides of the pressure equalizers  203  and pinch the nostrils to equalize ear pressure under water.  
      At least one draining guide  2031  which is protruded outward is located at a proper position of the pressure equalizers  203  protruded inward in the nosepiece  202  of the mask  20 , and is connected to the mirror  30  and nasal wings of the nosepiece  202 . When water permeates into the diving mask  1 , the draining guide  2031  can smoothly drain the water in the mirror  30  into a bottom of the nosepiece  202 , such that the diver can lift up the bottom of diving mask  1  under the water and blow with the nose to completely expel out the permeated water, thereby accurately solving a problem which always troubles the diver during a process of operation.  
      Referring to  FIG. 2 ,  FIG. 3  and  FIG. 4 , a one-way draining device  2  is located on a hole  2021  at a bottom of the nosepiece  202  of the mask  20 . The draining device  2  is composed of an inner seat  21 , a valve sheet  22 , an outer seat  23 , and a cap  24 , wherein a seat hole  211  which is in a same shape with the hole  2021  of the nosepiece  202  is located at a center of the inner seat  21 , a ring of U-shape latch groove  212  is surrounding a periphery of the seat hole  211 , and a latch hole  213  is located at one end of the seat hole  211 . Accordingly, the inner seat  21  is latched on the hole  2021  of the nosepiece  202  with the latch groove  212  from an inner side to an outer side. A latch pin  221  is located at a center of the soft valve sheet  22 , and can be extended into a latch hole  233  in a center of the outer seat  23  for positioning. The valve sheet  22  can cover a seat hole  231  of the outer seat  23 , which forms a one-way valve that can expel water in one side, from an inner side to an outer side. A transversal latch bar  232  is located at an inner rim of the seat hole  231  of the outer seat  23 , such that the outer seat  23  can be latched into the latch groove  212  of inner seat  21  with the latch bar  232 . A positioning pin  234  is located at one end of the triangular outer seat  23 , and two hook grooves  235  are located the other two ends, respectively. A draining hole  241  is located on the triangular cap  24  which is in the same shape as the outer seat  23 . A pin hole  242  is located at one end of the cap  24  having a U-shape opening, and two hooks  243  are located at the other two ends, respectively. When the cap  24  slides on the aforementioned outer seat  23 , the two hooks  243  of the cap  24  are respectively hooked into the hook grooves  235  of the outer seat  23  for positioning, and the pin hole  242  of the cap  24  is used to provide for an insertion of the positioning pin  234  of the outer seat  23 . Accordingly, the one-way draining device  2  of the present invention is assembled, such that the exterior seat water cannot enter into the diving mask  1  from an outside of the valve sheet  22 , and a user can blow to smoothly expel out the water from the one-way valve sheet  22  when the sea water permeates into the diving mask  1 .  
      Accordingly, at least one draining guide protruded outward which is located at a proper position of the pressure equalizers protruded inward in the nosepiece of the diving mask is used in the present invention. In addition to equalize ear pressure with the pressure equalizers, when water permeates into the diving mask of a diver, the draining guide can drain the permeated water in the mirror into the bottom of nosepiece, to facilitate a complete expelling, thereby avoiding the water remained in the mirror to cause a trouble to the diver.  
      It is of course to be understood that the embodiments described herein is merely illustrative of the principles of the invention and that a wide variety of modifications thereto may be effected by persons skilled in the art without departing from the spirit and scope of the invention as set forth in the following claims.