fig1 is a perspective view of a baseball - style cap and stereo combination according to an embodiment of the invention . the baseball - style cap combination 16 includes a crown 16 a , an amplifier 12 , a battery holder 13 with the batteries 19 in phantom , and stereo low profile micro - miniature speakers 14 and 15 within brim / bill 17 . the cap may be of any conventional design and manufacture and includes a cap crown 16 a , a brim / bill 17 and a peripheral sweatband 18 . in one embodiment , only one edge of the sweatband 18 is sewn to the crown enabling the sweatband 18 to be pulled away from the crown 16 a to enable access to the inner surface therein . this enables the wires from the battery holder 13 to allow threading in the sweatband 18 to the amplifier 12 . this also allows wires from the amplifier 12 to the speakers 14 and 15 . the on / off switch 10 of the amplifier 12 is also shown in this view as the led light 11 that when illuminated indicates that the amplifier is turned on . fig2 is a bottom view of the baseball - style cap and stereo combination of fig1 . in one embodiment , speakers 14 and 15 are enclosed by the cloth that covers the brim / bill 17 during assembly . in some embodiments , speakers 14 and 15 are “ low profile micro miniature speakers ” with rare earth magnets . also shown are the battery holder 13 , the amplifier 12 , the sweatband or flap 18 , the cap crown 16 a , and the brim / bill 17 . the speakers 14 and 15 may be sufficiently thin to fit completely within the thickness of the brim / bill 17 . for example , the brim / bill 17 may be between ⅛ and 3 / 16 of an inch thick . due to their thinness , the speakers 14 and 15 may be completely concealed within the brim / bill 17 and may be covered by an exterior cloth of the brim / bill 17 . fig3 is a left - side view of the baseball - style cap and stereo combination of fig1 . as shown , fig3 illustrates baseball - style cap combination 16 including stereo speaker 15 , the amplifier 12 , the on / off switch 10 , audio stereo jack 10 a , and the led light 11 that , when illuminated , indicates when the amplifier 12 is turned on . fig3 also illustrates the crown 16 a , the brim / bill 17 , the connecting wire 20 , and speaker 15 . fig4 is a right - side view of the baseball - style cap and stereo combination of fig1 . as shown , fig4 illustrates baseball - style cap combination 16 including stereo speaker 14 , the battery holder 13 with the batteries 19 in phantom . in this view there is also seen brim / bill 17 and the top of the stereo speaker 14 . the wires 22 connecting speaker 14 is also seen in this view . fig5 a - 5b are top and bottom views of a contoured pliable battery holder for use with the baseball - style cap and stereo combination of fig1 according to an embodiment of the invention . the contoured pliable battery holder 13 may generally comprise a contoured surface and a flat surface . that is , the contoured pliable battery holder 13 may be approximately hemispherical - shaped . in one embodiment , the contoured surface may be approximately convex and include an opening adapted to hold a battery holder 19 ( explained in more detail below ). generally , the flat surface faces the inner part of the baseball - style cap combination 16 ( i . e ., inward ) while the contoured surface faces the outer part of the baseball - style cap combination 16 ( i . e ., outward ). in one embodiment , the contoured pliable battery holder 13 may be positioned in a front portion of the baseball - style cap combination 16 approximately above the brim / bill 17 ; however , the contoured pliable battery holder 13 may alternatively be positioned at any location about the crown 16 a of the baseball - style cap combination 16 . the contoured pliable battery holder 13 may be made of ethylene - vinyl acetate ( eva ) foam or an equivalent material . advantageously , the shape and configuration of the contoured pliable battery holder 13 substantially aligns with the contour of the baseball - style cap combination 16 resulting in a low - to no - profile of the contoured pliable battery holder 13 . in this manner , an on - looker will likely not be able to observe the contoured pliable battery holder 13 within the baseball - style cap combination 16 . also , the foam acts a cushion to the forehead of a user and it is anticipated that the user will likely not feel the battery holder / forehead cushion 13 when wearing the baseball - style cap combination 16 . fig6 is a perspective view of a contoured rigid battery holder for use with the baseball - style cap and stereo combination of fig1 according to an embodiment of the invention . in one embodiment , the contoured rigid battery holder 19 includes a convex surface and a concave surface . that is , the contoured rigid battery holder 19 is substantially contoured to simultaneously fit the curvature of a forehead of the user and the curvature of , for example , the baseball - style cap combination 16 . the contoured rigid battery holder 19 may be made of injected plastic and may hold a plurality of batteries . in one embodiment , the contoured rigid battery holder 19 holds one or more batteries ( e . g ., four aaa - size batteries ). in some embodiments , the contoured rigid battery holder 19 is configured to be approximately the same size as the opening in the contoured pliable battery holder 13 . fig7 is a front view of the baseball - style cap and stereo combination of fig1 . as shown , fig7 illustrates the baseball - style cap combination 16 including the cap crown 16 a and the brim / bill 17 . also shown are the contoured pliable battery holder 13 and the battery holder / forehead cushion 19 in phantom . advantageously , the speakers 14 and 15 cannot be viewed by an on - looker because they are low profile micro miniature speakers and substantially or completely incorporated within the brim / bill 17 . additionally , another benefit is that the speakers 14 and 15 will not block the view of the user when wearing the baseball - style cap combination 16 due to their low - to no - profile configuration ( see fig8 and accompanying text ). fig8 is a cross - section of the baseball - style cap combination of fig7 taken along lines 8 - 8 . as shown , fig8 illustrates the brim / bill 17 having an inner portion 17 a and an outer portion 17 b . in some embodiments , inner portion 17 a comprises injected plastic or equivalent and outer portion 17 b comprises a covering such as porous audio cloth or equivalent . in one method of manufacturing , plastic is injected into a molding to form the brim / bill 17 leaving an opening for a speaker to be positioned therein . fig8 illustrates the speaker 14 within inner portion 17 a of the brim / bill 17 . as shown , the speaker 14 is substantially or completely confined within inner portion 17 a . also , because the speakers 14 and 15 are positioned within the brim / bill 17 , the projection of sound emanating therefrom is generally towards the front of the user &# 39 ; s face rather than adjacent to the user &# 39 ; s ears . in this respect , the user &# 39 ; s ears are protected from sounds with too high of a frequency or decibel which may cause damage to the user &# 39 ; s ears . one advantage of positioning the speakers 14 and 15 in the brim / brill 17 is that the user &# 39 ; s ears are not blocked or obstructed by earbuds or earphones . therefore , the user can listen to desired audio via the speakers 14 and 15 while still being able to hear alarms , warnings , and / or another person &# 39 ; s voice . for example , while a user is bicycling he / she may listen to music over the speakers 14 and 15 while still being able to listen to listen to ambulance sirens and car warning honks . fig9 is a bottom view of the baseball - style cap and stereo combination of fig1 with a flap extended . as shown , fig9 illustrates the baseball - style cap combination 16 including the crown 16 a , the brim / bill 17 , the sweatband 18 , the on / off switch 10 , an audio stereo jack 10 a and speakers 14 and 15 ( in phantom ). in some implementations , the cap may further include a wireless receiver , such as a bluetooth connection that allows reception of audio signals , e . g , from a nearby digital music device . fig9 also illustrates the contoured pliable battery holder 13 housing the contoured rigid battery holder 19 with a flap 21 in an open position therefrom . generally , the flap 21 is capable of moving from an open position to a closed position . in the open position ( as shown ), the flap 21 reveals the battery holder / forehead cushion 13 housing battery holder 19 . the flap 21 may be moved to the open position when a user is changing the batteries in the battery holder 19 . in the closed position ( not shown ), the flap 21 conceals the battery holder / forehead cushion 13 housing battery holder 19 . the flap 21 may be moved to the closed position when the baseball - style cap combination 16 is being worn by the user . the flap 21 may include attaching means such as velcro or equivalent for securing the flap 21 to the crown 16 a in the closed position . advantageously , the flap 21 is made of a soft material , such as eva foam or equivalent which further serves to cushion the forehead of a user , i . e ., in addition to the cushioning effect of the contoured pliable battery holder 13 . fig1 illustrates a circuit for use with the baseball - style cap and stereo combination of fig1 according to an embodiment of the invention . as shown , fig1 illustrates a circuit 12 including the on / off switch 10 and the audio stereo jack 10 a . in one embodiment , the circuit 12 is configured to fit within the sweatband 18 of the baseball - style cap 16 . such size allows for concealment ( and therefore protection from the elements and protection from bodily fluids , e . g ., sweat from the user ) of the circuit 12 while providing an adjustable means to amplify sound emanating from the speakers 14 and 15 . while certain exemplary embodiments have been described and shown in the accompanying drawings , it is to be understood that such embodiments are merely illustrative of and not restrictive on the broad invention , and that this invention is not be limited to the specific constructions and arrangements shown and described , since various other modifications may occur to those ordinarily skilled in the art .
an embodiment of a baseball style cap and stereo combination having a crown , a brim / bill , a sweatband , and two amplified stereo speakers concealed within the brim / bill is disclosed . the baseball - style cap combination further includes a battery holder / forehead cushion housing a battery holder concealed within an inner surface of the baseball - style cap combination by a flap . also included are wires connecting the battery holder to an amplifier concealed within the sweatband and wires connecting the amplifier to the speakers . a stereophonic music generator sends a music signal which is provided to the amplifier by any suitable means of communication , like an audio cord or wireless by means of infrared or bluetooth wireless technology .