Abstract:
This is a personal earphone assembly comprised of a flexible, elongate tube having open ends and a central lumen therethrough. Earphones are disposed at each open end of the tube, each earphone having a neck projecting therefrom and a wire passing from the neck, through the lumen, to a central aperture in the tube. In a stereophonic embodiment, the earphone wires run parallel from the central lateral aperture to a plug adapted to engage a stereo jack on a signal source. In a monaural embodiment, the earphone wires join a single double-strand lead to a mono jack. Lateral slits are provided adjacent the open ends of the tube for receipt of the temple ends of a pair of eyeglasses. The portions of the tube between the lateral apertures and the open ends wrap over and around the forward portions of a user&#39;s ear, and the earphones lodge in the outer ear canal. The assembly may also be worn without eyeglasses. In an alternative embodiment, a bead slidingly mounted on a doubled portion of the tube allows adjustment for a snug fit.

Description:
BACKGROUND OF THE INVENTION 
     1. Field Of The Invention 
     The present invention relates generally to personal audio listening devices, and more specifically to assemblies wherein earphones are mounted on eyeglasses. 
     2. Description Of The Related Art 
     The miniaturization of audio signal producing devices such as radio, cassette and compact disc players has permitted users to transport these devices easily and comfortably during physical and recreational activity. 
     Audio devices with speakers integrated into the chassis of the apparatus generating the sound are in common use. Examples include small radios and the like, without earphones. One disadvantage of the chassis-integrated speaker is that the sound can be heard by persons other than the user, potentially disturbing such persons, and therefore limiting the usefulness of such audio players under certain conditions. 
     Another disadvantage of devices with chassis-mounted speakers is that the quality of the sound reaching the ears of the user can be diminished by ambient noise or wind. Consequently, for personal use, to avoid noise or wind, such devices must be held close to the ear with the hand of the user, thereby limiting the use of the hand in physical or recreational activity. 
     Earphone headsets for use with many different types of audio equipment are also well known. Typically such headsets include a pair of earphone speaker assemblies, one attached to either end of a flexible, generally U-shaped metal or plastic headband strip. The headset apparatus is placed on the user&#39;s head to allow the speakers to be positioned over each ear. The U-shaped headband is commonly resilient, so as to keep the speakers properly positioned over the external ears of the user. Headsets of this type are illustrated by the patents issued to Kamimura U.S. Pat. No. 4,409,442 and MacDonald U.S. Pat. No. 5,117,465. 
     These types of headsets have the disadvantage of becoming uncomfortable to some wearers after prolonged use. Due to the resiliency of the headband, pressure is exerted on the external ears or temples of the user by the headset causing discomfort. Such discomfort may be accentuated when the headset is used simultaneously with eyeglasses, sunglasses hats, goggles, helmets and other head-mounted gear. In many cases, awkwardness, discomfort and inconvenience cause the user to choose between the headset and the other item, as both cannot be used at the same time. 
     In addition, such headsets are not suitable for use during some recreational or physical activities as the sets can easily dislodge from the head of the user during these activities. Once dislodged, the headset may distract the user from the sporting or recreational activity, potentially causing a dangerous situation to the user or other participants in the activity. Such distractions may be compounded for the user who wears eyeglasses, if the eyeglasses are dislodged by, and along with, the headset. 
     Further, such headsets often become tangled in the hair of users with long hairstyles. Other users prefer not to have their hairstyles disturbed by the headband. 
     Other speaker assemblies in the art utilize the temple pieces of a pair of eyeglasses to support and position the earphone speakers. For example, U.S. Pat. No. 2,874,230 to Carlson integrates speakers into the distal ends of the temple pieces of a pair of eyeglasses. However, in Carlson, the speakers are positioned behind the external ear of the wearer, which would reduce their efficiency significantly. 
     U.S. Pat. No. 3,588,384 to Negley describes a combination earphone/microphone headset including a large junction block that is attached to one eyeglass temple piece by a clip. Only one earphone is provided in the Negley invention. Negley&#39;s junction block would interfere with other head-mounted apparatus such as hats, helmets and the like, and could tangle in the hair of a long-haired user. 
     U.S. Pat. No. 5,164,987 to Raven utilizes a pair of fiber envelopes containing speakers that are suspended from the respective temple pieces of a pair of eyeglasses. The envelopes in the Raven invention have the disadvantage of potentially obscuring the peripheral vision of some users. Further, Ravens devices are large and obvious, and likely to draw attention to the face of the user. In addition, the size and flexibility of Raven&#39;s envelopes would appear to allow the speakers to swing or flap from side to side during certain physical or recreational activities such as motorcycle riding or skiing. windy conditions may also produce such flapping. This would not only be distracting, it would interfere greatly with the volume, quality and consistency of the sound reaching the user&#39;s ears. 
     Other headphones known in the art utilize the elastic securing strap of a visor or goggles to secure and position the speaker assembly over the ear of the user. For example, in U.S. Pat. No. 4,538,034 to French, the strap from a visor, goggles or other headgear is used to secure the earphone assembly in close proximity to the ears. The invention in French has the obvious disadvantage of requiring that the user wear a visor or goggles before the earphone speaker assembly can be utilized. In addition, the speaker assemblies must be adjusted every time the visor or goggles are adjusted or removed. 
     Earphones sold as Extreme Sport Ear Phones in the Peak Ski and Sport catalog, Holiday, 1997, include individual, bendable structures which wrap around the ear and support the earphones. Although these likely keep the earphones fast to the ear during vigorous activity, they would interfere with the temple portions of eyeglasses and sunglasses. 
     Yet another type of personal earphone assembly in common use includes no structural mounting components at all. These earphones employ very small, padded speaker portions of the type commonly referred to as “buds,” which simply lodge in the outer ear canal of the user. In stereo personal earphone assemblies employing pairs of bud-type speakers, a thin, very flexible, coated, double-strand wire runs from each bud speaker to a plug adapted to mate with a stereo jack. The wires from the two buds are usually affixed together over most of their length, from the jack plug to a point a short distance from the ends attached to the buds. There, they diverge in a Y-shaped configuration, the single wire leads being long enough to permit the buds to be placed in the ears. However, these single and double wire leads tend to flop around loosely, and are therefore very prone to getting snagged in the course of any physical activity, causing the buds to be dislodged from the ears. This is exacerbated in some constructions because, with long use, the paired wires tend to separate such that the single leads become longer and longer, creating a greater snag risk. 
     Thus, it appears that a need exists for a personal earphone assembly which is able to be mated securely with the ears for optimum sound quality during vigorous physical activity. But, such earphones should not interfere with glasses, hats, helmets, or goggles, and should not require goggles or a visor for support. Neither should such personal earphones be prone to getting snagged and drawn away from the user&#39;s ears during physical activity. Further, such earphones should not include components which annoy or distract the user, impair the user&#39;s vision, or draw undue attention to the user. Yet further, the earphones should not disturb a user&#39;s hairstyle, or tangle in the hair of a long-haired user. 
     SUMMARY OF THE INVENTION 
     The personal earphone assembly of the present invention is adapted to overcome the above-noted shortcomings and to fulfill the stated needs. It comprises a flexible, elongate tube with central lumen and opposed, open ends. At least one earphone is disposed at one of the tube&#39;s open ends. A wire, the distal end of which is connected to the earphone, passes into the tube&#39;s open end, through its lumen, and out through a central aperture. The proximal end of the wire includes means for connection to a signal source. The tube includes a lateral slit adjacent the open end with the earphone, the slit being dimensioned to receive the temple end of a pair of eyeglasses. 
     It is an object of the present invention to provide a personal earphone assembly which is convenient and comfortable to use. 
     It is a further object of the present invention to provide a personal earphone assembly which is easy and inexpensive to manufacture, yet durable and likely to provide a long service life. 
     Yet another object of this invention is to provide a personal earphone assembly which is able to mate securely with nearly any pair of eyeglasses or sunglasses, but which does not require glasses or any other support device such as a visor or goggles for effective use. 
     Yet a further object of the present invention is to provide a personal earphone assembly which will not interfere with a hat or helmet, or make the use of such items uncomfortable to a user. 
     Still a further object of the present invention is to provide a personal earphone assembly which is able to be secured to and supported by eyeglasses, but which mates securely with the user&#39;s ear canal opening. 
     Another object of the present invention is to provide a personal earphone assembly which employs bud-type speakers which mate with the ear canal opening, but which does not include wires which hang freely and present a risk of being snagged. 
     Still further objects of the inventive personal earphone assembly disclosed herein will be apparent from the drawings and following detailed description thereof. 
    
    
     BRIEF DESCRIPTION OF THE DRAWINGS 
     FIG. 1 is a right rear perspective view of the personal earphone assembly of the invention, engaged with a pair of eyeglasses. 
     FIG. 2 is a fragmentary plan view of the personal earphone assembly of FIG. 1, showing the right side and end of the flexible tube, with its associated earphone. 
     FIG. 3 is a fragmentary, right rear perspective view illustrating the manner of engaging the left end of the flexible tube with the temple end of a pair of eyeglasses. 
     FIG. 4 is a fragmentary, right rear perspective view illustrating the completed engagement of the left end of the flexible tube with the temple end of a pair of eyeglasses. 
     FIG. 5 is a fragmentary plan view of the left end of the flexible tube, showing the relationship of the diameter of the neck of the left earphone with the diameter of the flexible tube&#39;s lumen. 
     FIG. 6 is a right rear perspective view of the personal earphone assembly of the invention, illustrating self-supporting use thereof, without the aid of eyeglasses. 
     FIG. 7 is a perspective view of the personal earphone assembly of the invention, further including a snug, sliding ring for sizing the apparatus to a particular user&#39;s head. 
    
    
     DESCRIPTION OF THE PREFERRED EMBODIMENT 
     Referring now specifically to the drawings, FIG. 1 shows the inventive personal earphone assembly, which is generally identified herein with reference numeral  10 . Assembly  10  is comprised of an elongate, flexible fabric tube  12 . Tube  12  is preferably at least 10 to 12 inches long, and in the preferred embodiment is comprised of neoprene fabric, or a similar thick, somewhat resilient fabric. Tube  12  is constructed by binding the parallel, long side edges of an elongate, rectangular neoprene strip to one another with stitched seam  14 . The central bore or lumen  16  of tube  12  may have a circular or slightly flattened, oval cross section. Lumen  16  runs through the entirety of tube  12 , and is contiguous with tube  12 &#39;s open left and right ends  18  and  20 , respectively. The width of lumen  16  is preferably 0.2 to 0.5 inches, depending on its cross-sectional configuration and the direction of measurement thereacross. 
     As shown in FIGS. 1 and 2, tube  12  includes a central aperture  22  which opens laterally from lumen  16  roughly equidistant from left and right ends  18  and  20 . Central aperture  22  is most conveniently an elongate slit approximately 0.5 inches long, oriented parallel with tube  12 &#39;s long axis. Central aperture  22  is also preferably oriented opposite seam  14 , i.e. with tube  12  in a linear posture, as shown in FIG. 2, in a radial plane roughly 180 degrees away from the radial plane of seam  14 . The advantage of this is discussed below. 
     As shown in FIGS. 1-5, left and right engagement slits  24  and  26  open laterally from lumen  16 , and are disposed adjacent their respective open ends  18  and  20  of tube  12 . Slits  24  and  26  are preferably oriented parallel with tube  12 &#39;s long axis. Each slit  24 ,  26  begins at a point about 1.25 inches from its respective open end  18 ,  20 , and each slit  24 ,  26  extends about 0.5 inches, or so, from that point away from its respective open end  18 ,  20 . With tube  12  in a linear posture as in FIG. 2, slits  24  and  26  are preferably oriented in the same radial plane, that radial plane being roughly 90 degrees from the plane in which seam  14  resides, and also roughly 90 degrees from the plane in which central aperture  22  resides. 
     Left and right earphones  28  and  30  are disposed at tube  12 &#39;s left and right open ends  18  and  20 , respectively. This is shown in FIGS. 1-5. Earphones  28  and  30  are of the type commonly referred to as “buds.” Bud earphones have soft foam coverings and are shaped and dimensioned to lodge snugly in the user&#39;s outer ear canal. However, overall, they are generally disc-shaped, having a diameter of approximately 0.7 inches, or so. These are currently available from Sony Corporation and several other manufacturers, each manufacturer&#39;s bud earphone having a slightly different configuration. Thus, the particular bud earphone to be used in practicing the invention may be chosen, as necessary, to assure that the earphone securely engages the intended user&#39;s outer ear canal. 
     Each disc-shaped earphone  28 ,  30  includes rigid neck  32  projecting radially from the rigid plastic back portion thereof, i.e. from the side opposite that which engages the ear. This is best shown in FIG.  5 . Neck  32  is approximately 0.6 inches long and 0.2 inches thick. At least a portion of neck  32  includes a series of projecting, circumferential ridges  34 . 
     Earphones  28  and  30  are disposed at, and connected to, the distal ends of left and right wires  36  and  38 . This is shown in FIGS. 1 through 5. Specifically, left and right wires  36  and  38  are connected to earphones  28  and  30  at their respective necks  32 . Left and right wires  36  and  38  are preferably comprised of thin, flexible, coated, double-strand wire. 
     As shown in FIGS. 3 and 5, left and right wires  36  and  38  pass into tube  12 &#39;s left and right open ends  18  and  20  and, moving proximally, run coaxially with tube  12 , through lumen  16  of the respective left and right portions of tube  12  between left and right ends  18  and  20 , and central aperture  22 . Moving farther proximally, left and right wires  36  and  38  pass laterally out of lumen  16  through central aperture  22 . This is shown in FIGS. 1 and 2. 
     Wires  36  and  38  meet and are preferably bound together into parallel alignment forming double-wire lead  40  as they pass out of central aperture  22 . Double-wire lead  40  should be roughly two to three feet long, or so. The proximal end of double-wire lead  40  is connected to a pin plug  42 , or the like, able to mate with a jack of the type commonly provided on devices able to produce an audio signal. In this preferred embodiment, the plug and wire configuration is set up to carry a stereo signal; i.e. each wire  36 ,  38  and its respective earphone  28 ,  30  is a separate circuit carried through separate portions of the pin of plug  42 . 
     However, it is also contemplated that, instead of separate circuits running from plug  42 , wires  36  and  38  may be integrally joined such that they are in electrical communication with one another, forming a parallel circuit. Such may be the configuration if it is desired that a monaural signal be carried to both earphones. Such an electrical connection may be conveniently located at the Y-shaped junction  44  of wires  36  and  38 , adjacent central aperture  22 . Or, it may be located in plug  42 . 
     In one mode of use, left and right temple ends  46  and  48  of a pair of eyeglasses  50  are inserted through left and right engagement slits  24  and  26  as shown in FIGS. 1,  3  and  4 . Temple ends  46  and  48  are driven a substantial, but equal, distance into the central lumen  16  of the left and right portions of tube  12 . Preferably, temple ends  46  and  48  are driven far enough into tube  12  such that the entire portions of temple ends  46  and  48  which curve downward and away from the horizontal are covered by tube  12 . Then, eyeglasses  50  are placed on the head of the user, as they would normally be worn, with tube  12  around the rear portion of the user&#39;s head. The tube-covered portions of temple ends  46  and  48  sit atop and wrap around the rearward portions of, the user&#39;s ears. Once the foregoing elements are properly seated, left and right bud earphones  28  and  30  are snugly inserted into the outer portions of the user&#39;s left and right ear canals. Thus, the portions of tube  12  between engagement slits  24 ,  26  and tube ends  18  and  20  wrap comfortably and securely around the upper, forward portions of the user&#39;s ears. 
     The preferred arrangement discussed above regarding the disposition of seam  14 , central aperture  22  and engagement slits  24 ,  26  in their respective radially-distinct planes 90 degrees apart assures that seam  14  will be directed upward so as not to irritate the ear and interfere with the fit of eyeglasses; that central aperture  22  will open downward to let wires  36 ,  38  and especially  40  hang down naturally, close to the user&#39;s head and body; and, that the end portions of tube  12  beyond engagement slits  24 ,  26  will hang naturally downward at the front of the ears, outside the horizontal portions of the temples, so as not to interfere with the fit of eyeglasses  50  on the user&#39;s head. 
     It is noted that, alternatively, if desired, left and right ends  18  and  20  of tube  12  may instead be engaged with right and left temple ends  46  and  48 , respectively. However, this would cause the end portions of tube  12  to pass between the temples and the user&#39;s head, interfering with the fit of eyeglasses  50 . 
     When arranged properly, tube  12  holds eyeglasses  50  more securely to the user&#39;s head, just by virtue of the fact that tube  12  is wrapped around the rear thereof. However, the additional fabric of tube  12  over temple ends  46  and  48  provides for a slightly more snug and secure fit for the eyeglasses, just as is needed for highly physical activities. Further, the earphones naturally hang close to the ears so that, even if temporarily dislodged by a physical blow, snagging, or the like, they remain close to the ear and easy to reinsert. 
     Assembly  10 , as configured, also includes some adjustability to accommodate different users. This is primarily necessary in the area of the ear lobe and ear canal opening. It has been found that the distance between engagement slits  24 ,  26  and bud earphones  28 ,  30  needs to be adjustable by 0.5 inches, or so. This is accomplished by moving earphone necks  32  telescopically in or out of tube  12 &#39;s ends  18  and  20 . To make this most effective, the relationship between the diameter of neck  32  and the distance across lumen  16  should be such that neck  32  is able to be moved telescopically in first and second open ends  18 ,  20 . However, ends  18 ,  20  of tube  12  should exert some resiliently constrictive grasp upon neck  32 , and this action, in conjunction with the mechanical and frictional resistance between ridges  34  and the inner surface of tube  12  permit earphones  28 ,  30  to be selectively positioned closer to, or farther away from, their respective tube ends  18  and  20 . 
     To accommodate the needed adjustability between tube ends  18  and  20  and their respective earphones, a bit of slack needs to be left at Y-shaped junction  44 . That is, left and right wires  36  and  38  need to be slightly longer than their respective halves of tube  12  to avoid restricting adjustability at the wires&#39; distal ends. 
     Another point of adjustment is where engagement slits  24 ,  26  meet temple ends  46 ,  48 . Slits  24 ,  26  grasp temple ends  46 ,  48  somewhat resiliently, and they have the ability to stretch. Therefore, fine adjustments may be made by adjusting the depth to which a temple end is driven into the lumen  16  of its respective engagement slit. Further, slits  24 ,  26  can be manufactured in larger or smaller sizes to accommodate different sizes and styles of eyeglasses. 
     One alternative mode of use of the invention is to forego the engagement of tube  12  with eyeglasses. This is shown in FIG.  6 . In this mode, one simply wraps tube  12  around the rear portion of the head, wraps tube ends  18  and  20  over the tops of the ears, and inserts bud earphones  28  and  30  in the outer ear canals. This is a surprisingly stable arrangement, and avoids some of the problems associated with conventional bud-type earphone sets which tend to have very long earphone leads projecting from the Y-shaped junction. 
     In yet another mode of use, this in connection with a slightly altered configuration for the assembly, a single earphone may be used on either the left or right side of the head. In that case, the end of the tube with the earphone would be as described; the earphone would dangle with the tube end from the horizontal portion of the temple of the eyeglasses, ready for insertion in the ear. Meanwhile, the opposing temple end of the eyeglasses could be driven into the engagement slit, or even directly into the open tube end, on the opposing end of the tube. 
     As shown in FIG. 7, tube  12  may also be fitted with a mechanism for decreasing the effective length of tube  12 , thus providing for the snuggest fit of the assembly around the rear portion of the head. Bead  52  serves this purpose. Tube  12  is folded against itself at central aperture  22  and doubled, and this doubled portion is passed through an aperture in bead  52 . The aperture in bead  52  is dimensioned such that the doubled portion of tube  12  is snugly and slidably engaged therewith. As bead  52  is moved farther from central aperture  22 , more of tube  12 &#39;s length is doubled behind bead  52  and tube ends  18  and  20  cannot be drawn as far apart from one another. As bead  52  is cinched toward the user&#39;s head, a fit as tight as a tube  12  cut to a custom length can be achieved. 
     The foregoing detailed disclosure of the inventive personal earphone assembly  10  is considered as only illustrative of the preferred embodiment of, and not a limitation upon the scope of, the invention. Those skilled in the art will envision many other possible variations of the structure disclosed herein that nevertheless fall within the scope of the following claims. For example, different resilient and nonresilient tube constructions may be employed, and these may be seamed or non-seamed. 
     And, alternative uses for this inventive personal earphone assembly  10  may later be realized. Accordingly, the scope of the invention should be determined with reference to the appended claims, and not by the examples which have herein been given.