the pet toy of the invention 10 is illustrated in a first preferred embodiment at fig1 - 3 . the particular construction of the pet toy 10 in this first embodiment shows a three layered structure with corresponding groups of half sections that are assembled to complete the toy . specifically , fig1 shows the pet toy 10 as having an outer layer or shell 12 , and inner layer or shell 16 , and an intermediate layer or shell 14 which is disposed between the inner and outer shells . these layers or shells are provided in half sections which are joined to one another along facing edges or joining surfaces 26 , 28 , and 30 , as best shown in fig1 . a noisemaking device such as a squeaker 18 is arranged within an interior space or chamber of the pet toy as defined by the open space within the interior of the inner shell 16 . each of the shells / layers have complementary shapes such that when the pet toy is assembled , the shells / layers remain in a nested configuration in which substantially all of the facing surface areas of the respective shells / layers contact one another . the shells and layers may have similar or different cross - sectional thicknesses . for example , the outer shell 12 may be thicker than the inner shell 16 . however , the outer shell may also be thinner than the inner shell 16 . in one embodiment , the outer shell 12 and the inner shell 16 are of approximately the same thickness . referring to fig2 and 3 , the squeaker 18 is disposed within the interior chamber of the pet toy as defined as the space within the interior surface 31 of the inner shell 16 . optionally , interior supporting ribs or protrusions 32 may be incorporated on the interior surface 31 of the inner shell in order to provide additional strength to the pet toy . protrusions 32 may optionally be incorporated on interior surfaces of the outer shell 12 and the intermediate shell 14 . the protrusions may provide a predetermined amount of separation between one or more of the shells . the inner and outer shells may be joined to one another along their corresponding joining surfaces by a desired mating or connection arrangement . the example illustrated in fig3 resembles a “ tongue in groove ” configuration 34 in which one half section of the outer shell 12 incorporates a tongue or extension , and the other half section incorporates a groove or recess to receive the tongue / extension . this tongue and groove configuration may extend around the entire periphery of the joining surfaces 26 , or may be incorporated only upon selected sections of portions of the joining surfaces 26 . similarly , the joining surfaces 30 of the inner shell 16 may also incorporate a desired mating or connection arrangement . the half sections may be joined by heat welding , by an acceptable food grade adhesive , or combinations thereof . as also shown in fig3 , an opening 38 may be formed in the area adjacent the joining surfaces 26 to receive a neck 42 of the squeaker 18 . an orifice or opening 44 extends through the neck and communicates with an interior open - space 46 of a body 40 of the squeaker 18 . within the open - space 46 , a noise producing element , such as a flexible reed ( not shown ), may be mounted so that air traveling through the body of the squeaker results in vibration of the reed to generate sound . accordingly , the interior chamber of the pet toy communicates with an opening 49 the body 40 of the squeaker . the inner surfaces defining the opening 38 provide an upper surface area so that the neck 42 of the squeaker 18 may support the squeaker in a suspended position as shown . thus , the body 40 of the squeaker maintains a spaced relationship with the interior surface 31 of the inner shell . in this suspended position , the squeaker is therefore able to more reliably generate sound as compared to if the squeaker was mounted in contact with the interior surface 31 of the inner shell 16 in which operation of the squeaker might become inhibited if compression of the toy resulted in blocking flow of air through the squeaker . placing the squeaker in the illustrated suspended position also helps to protect the squeaker within the interior of the pet toy from outside contact or force . optionally , the squeaker 18 may be suspended within the interior surface 31 of the inner shell 16 at an angle such that the distal end of the squeaker with the opening 49 is not parallel to the interior surface 31 . arranging the squeaker 18 in this manner helps prevent the squeaker opening 49 from being obstructed by the shell interior surface 31 , for example , when the pet toy 10 is deformed or collapsed during play by an animal . alternatively , the squeaker 18 may be formed with a distal end formed at an angle to the squeaker body 40 . in another embodiment , the neck 42 is formed with an angle such that the distal end of the squeaker body 40 is not parallel to the interior surface 31 . as an animal chews or bites on the pet toy 10 , the volume of air within the hollow interior formed by interior surface 31 will change , therefore forcing air through opening 49 into the squeaker 18 and out of the other opening 44 of the squeaker 18 . the air passing through the squeaker 18 generates noise . as the body of the pet toy 10 returns to its normally un - deformed shape , air will travel in an opposite direction from the opening 44 , through the squeaker 18 , and back through opening 49 into the hollow interior of the pet toy 10 . referring to fig4 - 7 , another preferred embodiment is illustrated in which a toy 50 has a star shape with five projections 52 . use of the same reference numbers in this embodiment correspond to the same or similar structural features from the first embodiment . this preferred embodiment also adopts a three layered configuration with the outer shell 12 , the inner shell 16 , and the intermediate layer 14 . this star shaped embodiment has a central body 54 defining the cavity which receives the squeaker 18 . fig7 shows that the squeaker can be disposed in the suspended position which helps to protect the squeaker . also similar to the first embodiment , in this second embodiment , as shown in fig7 , the connection between the two half - sections of the outer shell is illustrated as a “ tongue in groove ” configuration 34 in which one half section of the outer shell incorporates a tongue or extension , and the other half section incorporates a groove or recess to receive the tongue / extension . referring to fig8 - 13 , another preferred embodiment is illustrated in which a toy 60 has a bone shape . the bone shape of this third embodiment can be defined as including a body 62 and an enlarged bone ends or joints 64 disposed at each end of the body . the same reference numbers in this embodiment correspond to the same or similar structural features from the first embodiment . this preferred embodiment also adopts the three layered configuration with the outer shell 12 , the inner shell 16 , and the intermediate layer 14 . the body 62 defines the cavity which receives the squeaker 18 . as shown in fig1 , again the squeaker can be disposed in the suspended position which helps to protect the squeaker . one additional feature shown in this embodiment is the use of a protruding peripheral flange 65 on one of the halves of the outer shell 12 . more specifically , the lower outer shell 12 is shown with this flange 65 that extends inwardly along the periphery of the shell 12 . the flange 65 includes a uniform recess 67 which receives a corresponding tongue or protrusion ( not shown ) of the upper outer shell 12 . fig8 and 13 also show the squeaker 18 has a different shape in that the body 40 and the neck 42 are both of relatively smaller diameter and are both elongated . this change in shape of the squeaker 18 is responsive to the narrower central cavity as defined by the shape of the body 62 . referring to fig8 , the squeaker 18 is also modified to include a protruding wedge 66 . the wedge 66 is received in a frame portion 68 formed on one end of the peripheral flange 65 . the frame portion 68 is shaped to surround the wedge 66 and to therefore provide additional structural support to maintain the squeaker in the suspended position . the wedge 66 and corresponding frame portion 68 may be incorporated in the pet toys of all embodiments of the present invention . fig9 - 12 also show the arrangement of some of the interior elements of the pet toy , these interior elements being shown in dotted lines . as shown , the layers of materials form a concentric cross sectional pattern at various locations in which the complementary shapes of the layers resemble a multi - layered structure of flexible material that may be adhesively connected or thermally bonded between layers . however the structure of the present invention involves separate molded pieces that do not require adhesive or any other bonding material , except for closure of the respective outer shell halves in which some adhesive may be used . further , because most types of bonding agents are not acceptable for use with pet toys due to their caustic nature , the invention avoids or minimizes the added expense of those special adhesives or other bonding agents that are classified as safe for animal consumption / exposure . referring to fig1 - 17 , yet another preferred embodiment is illustrated in the shape of a rawhide “ bone ” 70 . the shape of this fourth embodiment can be described as including a body 72 and tied or knotted ends 74 that are disposed at each end of the body 72 . referring to the other figures , this embodiment also incorporates the same general construction in which the shells or layers of material are concentrically arranged , and a squeaker 18 is disposed within the interior center chamber of the toy in the suspended orientation . this embodiment also incorporates the use of a protruding peripheral flange 65 on one of the outer shells , but instead of a uniform recess 67 , the lower outer shell 12 is shown with a uniform tongue or protrusion 69 that is placed within a corresponding groove ( not shown ) in the upper outer shell 12 . referencing fig1 , the squeaker 18 in this embodiment , shown in a partial cross - sectional view , has a shorter neck 42 and a larger diameter body 40 as compared to the squeaker 18 in the third embodiment . this embodiment also includes the wedge 66 formed on the neck 42 of the squeaker to help stabilize the squeaker as it is held within the frame portion 68 . referring to fig1 - 22 , yet another preferred embodiment is illustrated in the shape of a twig or stick 80 . this fourth embodiment can be described as further including a body 86 and surface features or irregularities that enhance the appearance of the toy to resemble a stick or twig . for example , fig1 and 20 show features on the outer shell 12 including a stub / base 82 resembling a stub of a removed branch , a knot 84 , and roughened or uneven outer surface irregularities 88 resembling bark . this embodiment also incorporates the same general construction as the other embodiments in which the shells or layers of material are concentrically arranged and a squeaker 18 is disposed within the interior center chamber of the toy in the suspended orientation . the shape of the squeaker 18 in this embodiment resembles the general shape of the squeaker in the first embodiment . the preferred embodiments of the invention illustrate the number of different shapes that can be used in the invention in which multi - layers or concentric shells are used . a squeaker may be held in a supported and protected position within the interior chamber of the pet toy . the half molded sections for the inner and outer shells simplify construction . although the invention is described in particular detail with respect to preferred embodiments and accompanying drawings , it shall be understood that the invention is not specifically limited to the preferred embodiments and is rather encompassed by the scope of the claims appended hereto .
a pet toy has multiple molded features assembled in a nested configuration thereby forming separate layers . an embodiment includes an innermost molded layer or shell ; an outermost molded layer or shell ; and an intermediate layer or shell secured between the inner and outer shells . in another embodiment , the inner and outer shells are made from a flexible , elastomeric material , and the intermediate layer is made from a flexible layer such as a printed sheet material with graphics thereon that enhance the visual appearance of the pet toy . the inner and outer shells are sized such that the inner and outer shells make firm and uniform contact with one another to support and hold the intermediate layer without shifting . the thickness of each layer may be different . a squeaker may be incorporated by housing it within an interior chamber of the pet toy in a suspended position .