in the following detailed description of the preferred embodiments , reference is made to the accompanying drawings , which form a part hereof , and within which are shown by way of illustration specific embodiments by which the invention may be practiced . it is to be understood that other embodiments may be utilized and structural changes may be made without departing from the scope of the invention . fig1 depicts the multi - lobed teething device 10 according to the present invention . the body of the device comprises a first receptacle 12 and a second receptacle 14 . in the embodiment shown in fig1 , first and second receptacles 12 and 14 are hollow hemispheres . receptacles 12 and 14 contain a plurality of hollow knobs 20 . the interior space of each knob 20 is in fluid communication with the hollow space enclosed within teething device 10 by first and second receptacles 12 and 14 . this allows the liquid contained inside the hollow interior of teething device 10 to flow into knobs 20 . the liquid alters the temperature of knobs 20 making their outer surfaces cold or warm depending on the temperature of the liquid . in the embodiment depicted in fig1 , first and second receptacles 12 and 14 screw - threadingly mate with one another by means of a male thread 16 disposed on first receptacle 12 , and a female thread 18 disposed on second receptacle 14 . the screw threaded engagement forms a liquid impermeable seal between receptacles 12 and 14 , thereby ensuring that the liquid contained within the hollow interior of teething device 10 does not spill during use , transport , or storage . a washer may be used to further improve the water impermeability of the seal . in an alternative embodiment , receptacles 12 and 14 can be mated by other means known in the art . for example , first receptacle 12 may include a protruding male end adapted to be received into the inner circumference of the second receptacle 14 . furthermore , a clamp can be disposed on the outer surface of first receptacle 12 and may be configured to engage a hook disposed on the outer surface of second receptacle 14 . the clamp increases the pressure exerted by the contacting rims of receptacles 12 and 14 onto one another , thereby increasing the strength of the formed seal . in the embodiment depicted in fig1 , receptacles 12 and 14 are not connected to one another when teething device 10 is disassembled . in an alternative embodiment , receptacles 12 and 14 may be connected to one another . one advantage of such embodiment is that the receptacles 12 and 14 will not be misplaced while teething device 10 is in its disassembled configuration . in an embodiment , receptacles 12 and 14 may be hingedly connected to one another . in this embodiment , receptacles 12 and 14 cannot be mated via a screw - threaded means , and therefore , one of the alternative means known in the art for sealingly mating two receptacles must be employed . examples of such means are provided in the preceding paragraph . teething device 10 includes a plurality of knobs 20 extending outwardly from receptacles 12 and 14 . each knob 20 has a hollow interior adapted to be filled with a cold liquid contained within the hollow interior of teething device 10 . knobs 20 may have a variety of shapes , and their surfaces may have a variety of textures . in the embodiment depicted in fig1 , knobs 20 are made of silicone and are studded with multiple hollow protruding elements 24 . protruding elements 24 are configured to compress responsive to the infant &# 39 ; s bite , and return to the normal decompressed position after the bite is discontinued . knobs 20 may be made out of any flexible and soft material that undergoes a plastic deformation responsive to a compressive force of a bite , but returns to the original shape upon removal of the compressive force . when teething device 10 is in the disassembled configuration , first receptacle 12 or second receptacle 14 may be filled with a cold liquid , such as ice water . teething device 10 is then assembled by mating together receptacles 12 and 14 . the cold liquid is confined within the hollow interior defined by internal surfaces of receptacles 12 and 14 and can flow into knobs 20 . through heat transfer , the cold liquid causes texturized surfaces of knobs 20 to cool , thereby providing the infant with a cold device that soothes the pain associated with teething . after the temperature of the liquid contained within teething device 10 seizes to be sufficiently cold , teething device 10 may be opened and the liquid can be discarded . teething device 10 can then be refilled with fresh cold liquid to cool knobs 20 to a desired temperature . although teething device 10 depicted in fig1 has a spherical body , other shapes including cylinders , cubes , prisms , pyramids , parallelepipeds , any other type of a polyhedron , or a combination thereof also fall within the scope of the invention . some of these alternative shapes are depicted in fig2 and 3 . in alternative embodiments of the invention depicted in fig2 and 3 , teething device 10 comprises a detachable knob 26 . detachable knob 26 has a base 28 configured to mate with an aperture 30 disposed on teething device 10 . in an embodiment , base 28 may have an annular shape . when detachable knob 26 is removed , interior space 32 within the hollow body of teething device 10 is exposed , thereby allowing interior space 32 to be filled with a cold liquid . once interior space 32 of teething device 10 contains an adequate amount of liquid , detachable knob 26 is reattached to the body of teething device 10 thereby sealingly enclosing the fluid contained within interior space 32 . the seal formed between base 28 and aperture 30 must be impermeable to fluids to prevent spillage during the use of teething device 10 . some examples of means of forming a seal between base 28 and aperture 30 include a screw - threaded engagement , a friction seal , a clamp , and other means known in the art . a washer can be used to reinforce impermeability of the seal . during the process of removal , the body of detachable knob 26 may be used as a grip to provide necessary leverage to unscrew , pull out , or otherwise remove base 28 of detachable knob 26 from aperture 30 . in the embodiment depicted in fig4 , detachable knob 26 may be replaced with a nipple 34 having base 38 adapted to mate with aperture 30 . the hollow interior of teething device 10 may be filled with a fluid intended for consumption by an infant or a child . nipple 34 may contain an opening 36 to permit the fluid to flow into the infant &# 39 ; s mouth . this feature further increases the versatility of teething device 10 . the advantages set forth above , and those made apparent from the foregoing description , are efficiently attained . since certain changes may be made in the above construction without departing from the scope of the invention , it is intended that all matters contained in the foregoing description or shown in the accompanying drawings shall be interpreted as illustrative and not in a limiting sense .
a teething device for exercising gums and deciduous teeth . two hollow receptacles sealingly mate to form a body of the teething device . a plurality of hollow knobs extend outwardly from the receptacles . the hollow interior of each knob is in a fluid communication with the interior space of the teething device . the teething device may be filled with a cold liquid to cool the exterior surfaces of the knobs . the liquid may be periodically discarded , and the hollow interior of the teething device may be refilled with a liquid of a predetermined temperature .