Abstract:
A heat-insulation safety nursing bottle includes a nursing bottle body, a heat shield cap fastened to the bottleneck of the nursing bottle body to hold down a nipple, and a cylindrical heat shield body fastened to the heat shield cap and surrounding the nursing bottle body for holding by a baby or nursing mother to prevent scalding. The cylindrical heat shield body prohibits the baby from touching or eating broken chips if the nursing bottle body is broken accidentally.

Description:
BACKGROUND OF THE INVENTION 
       [0001]    1. Field of the Invention 
         [0002]    The present invention relates to nursing bottles and more particularly, to a heat-insulation safety nursing bottle, which prevents scalding the hands of the baby or nursing mother, and prohibits the baby from touching or eating broken chips if the nursing bottle body is broken accidentally. 
         [0003]    2. Description of the Related Art 
         [0004]    Conventional nursing bottles are commonly made of glass or plastics. A glass nursing bottle is heat resistant and non-toxic, and has a long lifespan. A plastic nursing bottle is not heat resistant and can be toxic when holding a hot fluid. Further, a plastic nursing bottle has a short lifespan. Therefore, most parents use a glass nursing bottle to nurse their baby with milk or water during the stage where the baby cannot grasp an object or walk. However, a glass bottle is fragile. When a glass bottle falls to the ground, it may break into pieces, causing accidental injuries. Further, a baby may pick up and eat broken glass chips. Thus, when a baby is growing up and able to grasp objects or to walk, a plastic bottle may be used to substitute for a glass nursing bottle during this stage, despite of its various drawbacks in usage. 
       SUMMARY OF THE INVENTION 
       [0005]    The present invention has been accomplished under the circumstances in view. It is the main object of the present invention to provide a heat-insulation safety nursing bottle, which prevents scalding the hands of the baby or nursing mother, and prohibits the baby from touching or eating broken chips if the nursing bottle body is broken accidentally. 
         [0006]    To achieve this and other objects of the present invention, a nursing bottle comprises a nursing bottle body having an outer thread extending around the periphery of the bottleneck thereof, a nipple mounted on the bottleneck of the nursing bottle body, a heat shield cap fastened to the bottleneck of the nursing bottle body by a screw joint to hold down the nipple, and a cylindrical heat shield body fastened to the heat shield cap by a screw joint and surrounding the nursing bottle body at a predetermined distance for holding by a baby or nursing mother to prevent direct transfer of heat from the milk or fluid in the nursing bottle body to the hands of the baby or nursing mother. If the nursing bottle body is broken accidentally, the cylindrical heat shield body keeps the broken chips on the inside, preventing the baby from touching or eating the broken chips. 
         [0007]    In an alternate form of the present invention, the nursing bottle body has a bottom opening sealed by a breathing bottom cover. The breathing bottom cover has a crevice formed in a center rounded cone thereof. The crevice is normally closed subject to the elastic material property of the breathing bottom cover. When the nursing bottle body is tilted and the baby is sucking in the milk or drinking fluid from the nursing bottle body, the internal and external pressures of the nursing bottle body are not balanced, at this time, outside air pushes open the crevice and enters the inside of the nursing bottle body, allowing the mild or drinking fluid to be sucked out of the nipple into the baby&#39;s mouth. 
         [0008]    Further, the breathing bottom cover can be removed from the bottom opening of the nursing bottle body, facilitating cleaning of the nursing bottle body. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWING 
         [0009]      FIG. 1  is an exploded view of a heat-insulation safety nursing bottle in accordance with a first embodiment of the present invention. 
           [0010]      FIG. 2  is a sectional side view of the heat-insulation safety nursing bottle in accordance with the first embodiment of the present invention. 
           [0011]      FIG. 3  is a schematic sectional view illustrating the nursing bottle body broken and broken chips of the nursing bottle body kept inside the heat shield in accordance with the first embodiment of the present invention. 
           [0012]      FIG. 4  is an exploded view of a heat-insulation safety nursing bottle in accordance with a second embodiment of the present invention. 
           [0013]      FIG. 5  is a sectional side view of the nursing bottle in accordance with the second embodiment of the present invention. 
       
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT 
       [0014]    Referring to  FIGS. 1 ,  2  and  3 , a heat-insulation safety nursing bottle in accordance with a first embodiment of the present invention is shown. The nursing bottle comprises a nursing bottle body  2 , a nipple  23  configured subject to International Standards Organization (ISO) standards and fastened to the nursing bottle body  2 , and a heat shield  1  surrounding the nursing bottle body  2 . The heat shield  1  comprises a cylindrical heat shield body  11 , which comprises an outer thread  111  extending around the periphery near the topmost edge thereof, and a heat shield cap  12 , which comprises a first inner thread  121  disposed near a bottom side thereof and threaded onto the outer thread  111  of the cylindrical heat shield body  11 , a center mounting through hole  122 , and a second inner thread  123  spaced above the first inner thread  121  and disposed adjacent to the center mounting through hole  122 . The nursing bottle body  2  comprises a bottleneck  21 , and an outer thread  22  extending around the periphery of the bottleneck  21 . The second inner thread  123  of the heat shield cap  12  is threaded onto the outer thread  22  of the nursing bottle body  2  to lock the nipple  23  to the bottleneck  21  of the nursing bottle body  2 . When the nursing bottle is assembled, the heat shield cap  12  of the heat shield  1  is secured to the bottleneck  21  of the nursing bottle body  2 , and the cylindrical heat shield body  11  of the heat shield  1  is spaced around the nursing bottle body  2 , avoiding direct transfer of heat from the milk in the nursing bottle body  2  to the cylindrical heat shield body  11  of the heat shield  1 , and therefore the cylindrical heat shield body  11  does not scald the user&#39;s hand. Further, the cylindrical heat shield body  11  of the heat shield  1  protects the nursing bottle body  2  against breaking. Even if the nursing bottle body  2  is broken, the broken chips can be kept inside the cylindrical heat shield body  11  of the heat shield  1 , prohibiting the baby from touching or eating the broken chips. 
         [0015]    Referring to  FIGS. 4 and 5 , a heat-insulation safety nursing bottle in accordance with a second embodiment of the present invention is shown. The heat-insulation safety nursing bottle comprises a nursing bottle body  3 , a nipple  34  configured subject to International Standards Organization (ISO) standards and fastened to the nursing bottle body  3 , and a heat shield  1  surrounding the nursing bottle body  3 . The heat shield  1  comprises a cylindrical heat shield body  11 , which comprises an outer thread  111  extending around the periphery near the topmost edge thereof and an air vent  112  at the bottom side thereof, and a heat shield cap  12 , which comprises a first inner thread  121  disposed near a bottom side thereof and threaded onto the outer thread  111  of the cylindrical heat shield body  11 , a center mounting through hole  122 , and a second inner thread  123  spaced above the first inner thread  121  and disposed adjacent to the center mounting through hole  122 . The nursing bottle body  3  comprises a bottleneck  31 , an outer thread  311  extending around the periphery of the bottleneck  31 , a bottom opening  32 , and a breathing bottom cover  33  fastened to the bottom opening  32 . The second inner thread  123  of the heat shield cap  12  is threaded onto the outer thread  311  of the nursing bottle body  3  to lock the nipple  34  to the bottleneck  31  of the nursing bottle body  3 . The breathing bottom cover  33  is made of silicon rubber and press-fitted into the bottom opening  32  of the nursing bottle body  3 , comprising a rim  331  extending around of the periphery thereof at a bottom side and stopped against the bottom edge of the nursing bottle body  3  outside the bottom opening  32 , a center rounded cone  332  disposed at the center thereof, and a straight or crossed crevice  333  formed in the rounded cone  332 . When the nursing bottle body  3  holds milk or a drinking fluid therein and the internal and external pressures of the nursing bottle body  3  are balanced, the gravity weight of the milk or drinking fluid in the nursing bottle body  3  forces the center rounded cone  332  to close the straight or crossed crevice  333 . When the nursing bottle body  3  is tilted and the baby is sucking in the milk or drinking fluid from the nursing bottle body  3 , the internal and external pressures of the nursing bottle body  3  are not balanced, at this time, outside air pushes open the straight or crossed crevice  333  and enters the inside of the nursing bottle body  3 , allowing the mild or drinking fluid to be sucked out of the nipple  34  into the baby&#39;s mouth. 
         [0016]    Because the heat shield cap  12  of the heat shield  1  is secured to the bottleneck  31  of the nursing bottle body  3 , and the cylindrical heat shield body  11  of the heat shield  1  is spaced around the nursing bottle body  3 , heat will not be directly transferred from the milk in the nursing bottle body  3  to the cylindrical heat shield body  11  of the heat shield  1 , and therefore the cylindrical heat shield body  11  does not scald the user&#39;s hand. Further, the cylindrical heat shield body  11  of the heat shield  1  protects the nursing bottle body  3  against breaking. Even if the nursing bottle body  3  is broken, the broken chips can be kept inside the cylindrical heat shield body  11  of the heat shield  1 , prohibiting the baby from touching or eating the broken chips. 
         [0017]    In conclusion, the invention provides a heat-insulation safety nursing bottle, which does not scald the user&#39;s hand and effectively protects the nursing bottle body against breaking. 
         [0018]    Even if the nursing bottle body is broken, the broken chips can be kept inside the heat shield, prohibiting the baby from touching or eating the broken chips. 
         [0019]    Although particular embodiments of the invention have been described in detail for purposes of illustration, various modifications and enhancements may be made without departing from the spirit and scope of the invention. Accordingly, the invention is not to be limited except as by the appended claims.