Abstract: A strap for ski goggles is disclosed wherein the strap includes a ring at the location of the wearer's ears so that the ring surrounds or substantially surrounds the ear. In this way the strap does not press down on the ears. The ring may include a Velcro perimeter that engages a corresponding Velcro perimeter of a removable ear cup for keeping the ears warm. The rings may be circular, oval, or generally U-shaped.

Abstract: An improved temple piece is provided, including an elongated temple piece, including at least a first and a second region, the at least first and second regions comprising materials having different Shore A durometer hardnesses, wherein the first region has a Shore A durometer hardness less than that of said second region, and wherein the first region extends substantially the length of the temple piece. An elongated temple piece is also provided, including at least a first and a second region, wherein the first region does not predominantly extend, in at least one of the portions where the first region extends along the lower edge of said temple, from the lower edge over an interior surface of the temple piece such that contact between the first region and the side of a wearer's head and the wearer's hair is otherwise reduced.

Abstract: Improved eyeglasses are disclosed that have improvements in comfort, safety, wear ability, and convenience, based upon improvements in the contact (bearing) surfaces where the eyeglasses touch the body by providing air passages, hydrophobic surfaces and/or ratchet-tooth-like structures to promote motion from the bottom of the lenses in front toward the end of earpieces in the back of the head; to methods, articles, etc. for providing such improvements; and to methods for improving acceptance of such improved eyeglasses, especially improved methods of doing business.

Abstract: In an optical frame attachment according to the present invention, a flexible tangle preventing member 4 is attached so as to couple a predetermined portion 2b anterior to a part 2a of a temple, where an ear contacting portion 3a is attached, and a front end 3c of the ear contacting portion 3a; and is attached so as to couple the temple 2 and the front end 3c of the ear contacting portion 3a even when the temple 2 is lifted upward upon taking off glasses. Since a space between the temple 2 and the front end 3c of the ear contacting portion 3a is blocked by the tangle preventing member 4, even when the temple 2 is lifted upward upon taking off the glasses, the hair is less likely to enter an oscillating portion 3b serving as an attaching portion of the temple 2 and an ear pad member 3, and tangling thereto is suppressed. Further, since the tangle preventing member 4 has flexibility, the function of suppressing the slipping down of the glasses are not inhibited.

Abstract: In order to provide a length-adjustable temple for eyeglasses which is easy-to-wear by engaging a concavity of an ear without giving pain to a wearer irrespective of the shape of the ear, a distal member is coupled to a proximal member via a length adjustable joint portion, the distal member is formed by a bent or curved arm portion of elastic material which is superior in flexible deformation, and the arm portion is formed with a pad to be fitted on the outer periphery or in the concavity inside the outer periphery of the ear at the distal portion thereof.

Abstract: Eyeglass structures having mounting supports in temple members are provided. This design eliminates conventional nose pads and is free from any physical contact with nose. It provides a comfortable and stylish eyeglass structure to the wearer.

Abstract: A flexible glasses frame comprises two bundles of soft pull rope set up on outboard of two lens respectively, each bundle of soft pull rope should include at least one piece of soft pull rope. At least two tail nail should be fixed on the end of rope which is far away from lens. The leg of eyeglasses is made of soft material, assorted with various parts, assembled as new type of glasses temple, posses strong points of simple production, low cost, convenient assembling, portable convenience, lightness and small, closely cling to head shape of wearer and etc. Length of the leg can be adjusted to best size as per different head shape.

Abstract: An eye cover for use as sunglasses, eye shields, eye glasses or other eye wear, is formed of an elongated and flexible sheet of transparent plastic material adapted to extend horizontally over both eyes and temples of a wearer, to a location forward of the ears of the wearer. The sheet has a central nose engaging area, a pair of viewing areas on opposite sides of the nose engaging area and a pair of temple engaging areas each extending from one of the viewing areas. Each of the temple areas have inner surfaces and are bent for use into an arcuate position with the inner surfaces engaging the temples of a wearer. A bend retaining mechanism, such as wires connected to the perimeter of the sheet, form and resiliently maintain the arcuate position of each of temple area.

Abstract: Eyewear includes a half-jacket frame. A removable shield, extending from the half-jacket frame to the wearer's face, may be provided to prevent direct impingement of air and dust on the wearer's eyes. The half-jacket frame includes a left indent, a left upper lens groove adapted to receive a left lens, a right indent, and a right upper lens groove adapted to receive a right lens. The removable shield includes a left lens opening, a left detent adapted to cooperatively receive the left indent of the half-jacket frame, a left lower lens groove adapted to receive the left lens and mate circumferentially with the half-jacket frame, a right lens opening, a right detent adapted to cooperatively receive the right indent of the half-jacket frame, and a right lower lens groove, adapted to receive the right lens and mate circumferentially with the half-jacket frame. The half-jacket frame may be constructed of titanium.

Abstract: A wind and noise reducer for eyeglasses includes a panel that has a top edge, a bottom edge, a forward edge and a rear edge. The forward edge is generally vertically orientated. The panel has an inside surface and an outside surface. The inside surface is concave and the outside surface is convex. An elongated arm has first end and a second end. The first end is attached to the top edge such that the arm is generally horizontally orientated. The arm extends rearward from the panel. A coupler is removably positionable on the temple of the eyeglasses for selectively coupling the arm to the temple such that the arm is orientated parallel to the temple and the forward edge is directed forward of the eyeglasses. The panel may be moved along the temple such that wind is directed around the ears of the wearer of the eyeglasses.

Abstract: A wireless ad hoc pico network is formed by eyewear and other devices such as a computer, a bracelet and a telephone having similar transceivers mounted on them. Master slave relationships are configurable. Other devices, such as a radio, a CD player, a hand held global positioning satellite system and a heart rate monitor, having similar transceivers, can also be connected with the transceiver of the eyewear. The transceivers operate on globally available, unlicensed radio band, 2.45 gigahertz (GHz). The eyewear includes a frame and two temples connected to the frame via hinges. Temples have a male portion of a connector incorporated in them. Female portion of the connector is made integral with the hinges. When the male portion is inserted in the female portion the temple is attached to the frame. The temples can be removed by pulling the connector apart, and a temple with different apparatus within it can be inserted in place of the removed temples.

Abstract: A variable length strap including at least one elastic cord, such as a shock or bungee cord, to adjustably secure an article to a wearer is disclosed. At least one cord lock may be provided on the elastic cord to assist with adjustment of strap length by being selectively slidable along or anchored to the cord. The length of the strap may be adjusted by selectively moving the cord lock along the elastic cord either towards or away from one side of the article. At least one end of the elastic cord may be secured to the cord lock. The elastic cord may also have at least one end secured to the article, or the elastic cord may be slidably mounted at a junction on the article. A guide may be provided on the elastic cord, with the elastic cord slidable through the guide. The guide may keep the first and second portions of the elastic cord separate from one another.

Abstract: The “Eye Glass Perspiration Guard” which is fixed by means of rubber “O” rings to the eye glass arms enables individuals the use of a “sweat band” type device without having to be secured around the head. With the close proximity of the “Eye Glass Perspiration Guard” to the eye glasses, dust and dirt can also be reduced and or eliminated from entrance from the top of the eye glasses. Hats and or hard hats will not be interfered with as with head constraint “sweat bands”.

Abstract: A new set of foam strips, designed to fit within the bridge of one's ear, to rest underneath the weight of the glasses handle, to relieve the ear of soreness. Each strip is coated with adhesive underneath to prevent movement of the foam, And to continue desired comfort.

Abstract: The invention is frames for an article of eyewear. The frames include a pair of earstems structured to extend along a side of the head and over ears of the individual. The earstems have a curved structure that extends around to a rear surface of the head such that distal ends of the earstems have a separation less than a width of the head. The earstems each define a plurality of elongate apertures located adjacent the distal ends and extending in a substantially vertical direction. The elongate apertures may have an elliptical shape and serve to enhance the flexibility of the earstems.

Abstract: This invention consists of eye, safety, and/or prescription glasses with attached and/or attachable ear plug holders which may be attached or manufactured to glasses temple pieces by multiple means of molding, clips, clamps, screws, nuts, bolts, glueing, snaps, prongs, bands, such as plastic, metal, or rubber bands etc.

Abstract: An eyes and ears protection device provides a forehead beam supporting a depending goggle-like eyes shield and laterally opposed depending side shields. The lateral portions of the forehead beam pivotally support rearwardly extending temple beams, the rearward portions of which each movably interconnect a rearwardly extending ear beam by a ball and socket joint. The rearward portion of each ear beam movably interconnects an earplug structure by a ball and socket joint. Each earplug structure movably supports an earplug positionable for use in a user's auditory canal and for storage in a cavity or space defined by the ear beam.

Abstract: Eyewear for two-way communication comprises a speaker and a microphone. The speaker is supported by an earstem of the eyewear. In some embodiments the earstem is formed into a speaker support loop. The speaker is supported by the loop and held away from the wearer's external outer ear. Speaker position is adjustable in relation to the wearer's ear. An electrical cord couples the microphone and speakers to a wearer unit that includes a wireless transceiver. The electrical cord functions as a neck strap to support the eyewear when removed from the head.

Abstract: The invention relates to a listening assistance device (1) comprising hearing modules (3) mounted on the ends of the arms of an eyeglass frame (2), said modules being designed to support the eyeglass frame on the ear of the user. The hearing modules also have a formed part (5) which extends into the auditive canal without closing the latter and which includes the sound outlet hole (6) of the module. The modules comprise a speech spectrum frequency response and linear dynamics in order to improve speech intelligibility. This makes it possible to provide a listening assistance device compensating for mild hearing loss that can be produced easily and economically, is more comfortable to use and is not regarded at first sight as a hearing aid by an observer.

Abstract: A resilient non-smooth projection member formed into shape on eyeglass temples and on nose pads and having a plurality of grain-like projections on a touching surface of soft protruding pads of each eyeglasses temple or nose pad. The backside of each grain-like projection has a recessed, hollow shape, and these grain-like projections touch a wearer's ear sides and nose, giving rise to resilient massage, allowing for comfortable wear of the eyeglasses.

Abstract: A hands-free binocular visor headgear for viewing sporting and other events where it is desirable to use binoculars but also have the free use of the hands. An adjustable head securing device secures the unit to the user's head. Binoculars or other optics are attached to the head securing device such that they can be pivoted between an in-use and a not in-use position. The unit can also optionally contain removable earmuffs, a removable or fixed AM/FM radio or scanner or combination AM/FM/Scanner, at least one removable earphone and a removable microphone. The user can pick and choose what exact equipment he needs for a particular sporting event.

Abstract: A magnifying safety glasses assembly (10) for use by persons with presbyopia, the assembly (10) including a front safety eyepiece portion (11) made substantially of a transparent, nonmagnifying, shatter-proof material, and matching right and left temple portions (12), each affixed to an end of the front eyepiece portion (11), wherein the front safety eyepiece portion includes at least one built-in magnifying corrective segment (13) for correction of a user's near vision. The safety glasses assembly (10) preferably also includes a retainer strap (16) and earplugs (17), each earplug (17) being attached to an end of the retainer strap (16).

Abstract: A molded unit including several members of eyeglasses uses a combination of hard plastic and shape-memory plastic to avoid sliding and protruding of the members. The unit frame comprises a metal core embedded in a substrate made of hard plastic of which heat deformation temperature is higher than 50 degrees centigrade, and shape-memory plastic that is disposed outside the substrate and has a glass-transition temperature of between 20 degrees centigrade and 40 degrees centigrade. The shape-memory plastic is positioned where a human body contacts.

Abstract: The present invention relates to a spectacles frame (1), particularly for sports spectacles, allowing the inclination of the frame with respect to the user's face to be adjusted to suit his build. It comprises, for each side (2), a part (3) articulated by one of its ends to the free end (21) of the side (2), means (4, 5) allowing the angular position of said part (3) to be varied with respect to the side (2). This part (3) itself is designed to rest on the upper part of the user's ear. By varying the angular position of the part (3) with respect to the side (2), the inclination of the frame with respect to the user's face is varied.

Abstract: A temple plate pad adapted to a temple plate of a pair of eye glasses has a bottom plate and a tapered body securely engaged with the bottom plate and adapted to securely engage with the temple plate. The bottom plate has a width larger than a width of the tapered body so that after the tapered body is attached to the bottom plate, an inverted T shape is formed. Whereby the T shaped temple plate pad is able to receive loading due to the width of the bottom plate being larger than the width of the tapered body.

Abstract: A device for restraining eyeglasses around neck and for securing eyeglasses to head includes an arrangement configured to retract a strap part into a hollow portion of a temple leg. The strap coils around itself or retracts by another arrangement. The retracting arrangement is controlled by a button or slide to retract the strap and to stop retracting the strap. Two independently retractable strap parts are provided, each connecting to a different temple leg of eyeglasses or sunglasses. The two independently retractable strap parts are connectable to each other in a rearward section of the strap parts.

Abstract: Eyewear for two-way communication comprises a speaker and a microphone. The speaker is supported by an earstem of the eyewear. In some embodiments the earstem is formed into a speaker support loop. The speaker is supported by the loop and held away from the wearer's external outer ear. Speaker position is adjustable in relation to the wearer's ear. An electrical cord couples the microphone and speakers to a wearer unit that includes a wireless transceiver. The electrical cord functions as a neck strap to support the eyewear when removed from the head.

Abstract: A magnifying safety glasses assembly (10) for use by persons with presbyopia, the assembly (10) including a front safety eyepiece portion (11) made substantially of a transparent, nonmagnifying, shatter-proof material, and matching right and left temple portions (12), each affixed to an end of the front eyepiece portion (11), wherein the front safety eyepiece portion includes at least one built-in magnifying corrective segment (13) for correction of a user's near vision. The safety glasses assembly (10) preferably also includes a retainer strap (16) and earplugs (17), each earplug (17) being attached to an end of the retainer strap (16).

Abstract: A spectacle frame with ear bends each comprising an auricular front member connected to a temple, an auricular back member contactable with the back of the ear, and a connecting member for connecting the front member and the back member to be rotatable. The spectacle frame further comprises selective pressing means capable of changing a first state in which the back member presses the back of the ear with a second state in which the back member does not press the back of the ear.

Abstract: A double rolled stretch fabric protective member is detachably attached to a pair of connection members at each end to form an eyeglasses retainer and case combination with detachable straps. The connection members comprise tubular straps which may receive the stems of eyeglasses therein and held in place on the stems by elastic bands within the ends of the straps. The assembly is then worn around the head or neck as a retainer preventing the eyeglasses from sliding forward or falling off in sports and such. When the eyeglasses are not worn they can be folded and placed within the cavity formed by unrolling the double roll of the case.

Abstract: A device for securing eyeglasses on a person's head. A pair of elastomeric retainers are secured along temples of a pair of eyeglasses for positioning behind a person's ears.

Abstract: A resilient non-smooth projection member formed into shape on eyeglasses temples and on nose pads has a plurality of grain-like projections on a touching surface of soft protruding pads of each eyeglasses temple or nose pad. The backside of each grain-like projection is shaped a recessed hollow, and these grain-like projections touch a wearer's ear sides and nose, giving rise to appropriate resilient massage, letting a man wearing the eyeglasses comfortably.

Abstract: The present invention is directed to multipurpose containers in which a variety of items can be stored, such as eyeglasses writing instruments, pills, medicines, thermometers, rulers, note pads, to name a few of the nearly limitless number of items that can be stored. The containers may be provided with writing implements or gauges to measure a parameter, such as a timepiece, or a computational device, such as a calculator.

Abstract: An eyeglass frame having temple extensions each of which form an angle of at least 91 degrees with the front frame when in the fully opened position. The temple extensions have a curved shape and include a shaped spatula at their distal ends to provide that the eyeglass frame engages a user's head more securely and comfortably.

Abstract: Disclosed is a spectacle frame including rims which respectively surround lenses and are rested on a wearer's nose and temples which are fitted over and around the wearer's ears. The spectacle frame comprises a first spring disposed in each temple, each temple having an upper end and a lower end which is rotatably connected with the upper end, the upper end of each temple being defined with a first fastening groove in which one end of the first spring is fastened to the upper end, and the lower end of each temple being defined with a second fastening groove in which the other end of the first spring is fastened to the lower end, whereby the lower end of each temple can be rotated about an axis thereof.

Abstract: An elastic glasses temple includes a connector, a temple body having a round hook in a front end to pivotally connected to the connector, a sleeve fitting around a front portion of the temple body with a coil spring fitted in a second hole formed in a rear portion of the sleeve, a coil spring and a position member combined together. The position member is fixed on the temple body, fitting in a rear end of the sleeve. When the temple body is forced to swing outward by exterior force, with a screw fitting in said round hook as a pivot, the sleeve is pushed to move rearward to compress the coil spring to absorb exterior force to permit the temple body swing outward. The temple body swings back after exterior force disappears with resilience of the the coil spring. Then this temple can suit to any sizes of users' faces.

Abstract: A binocular assembly that includes a hands free support mechanism for supporting the binoculars in front of the user's eyes without using any of the user's hands. The hands free support mechanism includes an adjustable head securing strap and a pair of positioning arms. Each of the pair of positioning arms rigidly extends from one of the binocular elements of a user adjustable binocular assembly at an angle “A” of between twenty-five and forty-five degrees.

Abstract: An eyeglass interface system is provided which integrates interface systems within eyewear. The system includes a display assembly and one or more audio and/or video assemblies mounted to an eyeglass frame. The display assembly is mounted to one temple and provides an image which can be viewed by the user. The audio or video assembly is mounted to the other temple and is in communication with the display assembly. The audio or video assembly may comprise a camera assembly and/or an audio input or output assembly, such as a microphone and/or speakers. The camera assembly is placed on the temple to record the visual field observed by the user. A head-tracking assembly may be provided to track the position of the user's head. A number of applications can be provided with the present system, such as a telephone system, pager system, or surveillance system.

Abstract: An earplug system for conveniently storing and dispensing earplugs to an individual. The earplug system includes a connector formed for removably connecting to the distal ends of the arms of glasses, a recoil device attached to the connector, a length of cord stored within and dispensed from the recoil device, and an earplug attached to the cord. The recoil device stores the length of cord during non-use of the earplug, however when the user desires to utilize the earplug within their ear they simply draw the cord from the recoil device and insert the earplug into their ear without fear of losing the earplug. In an alternative embodiment of the present invention, the recoil device is permanently positioned within the arms of the glasses for dispensing the length of cord and corresponding earplug.

Abstract: A spectacle frame with ear bends each comprising an auricular front member connected to a temple, an auricular back member connectable from the back of the ear, and a connecting member for connecting the front member and the back member to be rotatable. The spectacle frame further comprises selective pressing means capable of changing a first state in which the back member presses the back of the ear with a second state in which the back member does not press the back of the ear.

Abstract: Eyewear comprising a lens for transmitting light to a wearer's eye, a frame for the lens, the frame including temples for supporting the frame on the wearer's ears, the temples comprising a plurality of substantially equally spaced biomagnets or a single strip biomagnet attached to the temples for providing a magnetic field to the wearer's head. Temple tips for attachment to temples of eyewear comprising a longitudinally extending member having a channel therein for receiving the eyewear temple, the temple tips including at least one biomagnet for providing a magnetic field to the wearer's head.

Abstract: The present invention is a device for adjusting height of an arm of an eyeglasses frame relative to a wearer's ear, which includes a main element and a locking element. The main body has a top, sides, a back and a bottom, and as a recess located at the top and adapted to receive a frame arm. The main body has height adjustment means. The locking element is adapted to attach to the top of the main element so as to hold a frame arm in the recess of the main element when a frame arm is located therein and includes one of a male component and a female component of an interconnecting attachment means which attaches the main element sides to the other of the male component and the female component. The locking element may be a snap-on clip. The main element height adjustment means is created by having a bottom length which is elongated over the bottom of the main element, and a distance, measured from the recess and being perpendicular from the recess to the bottom.

Abstract: An eyeglass frame includes two temples and a pull-down member rotatably and ratchedly attached in an opening of the distal end of each temple. Each pull-down member is movable with respect to the end-piece at a series of discrete angles, and thereby provides a snug fit of the eyeglass frame on the user's face. The pull-down member includes a core with a central opening defined by a series of teeth. A pin having a complementary series of teeth along an outer surface thereof engages the toothed opening of the core to provide the pivotable and ratchetable displacement of the pull-down member relative to the end-piece of the frame temple. The pin has a top portion with an adjustment protrusion extending therefrom and a bottom portion which covers the opening of the end piece.

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's ear, and the earphones lodge in the outer ear canal. The assembly may also be worn without eyeglasses.

Abstract: A spectacle temple has an arm coupled at one end to the lens portion of said spectacles and terminating in a hook at the opposite end, where the arm has a plurality of adjustable sections, each section having at least one ball in socket connection that is rotatable in any direction. The adjustable sections correspond to the temple area of a wearer's head, the top of the ear, and the curved portion of the ear. The rotatability of the ball and socket connections allow for a wearer to manually adjust the temples to achieve a proper fit. The hook end of the temple is covered by oil and encapsulated by a water-resistant rubber or plastic cover.

Abstract: Eyewear with earpieces supported from a wearer's ear with optional audio apparatus for use by the wearer, having a front frame browpiece portion including a front transparent panel that may be tinted and/or may be designed to correct vision impairments, being supported on a wearer's head by a nose bridge and by at least one earpiece or earplug that is received into the concha of the wearer's ear and/or into the ear canal. The earpiece or earplug is attached to a rear end of its respective temple of the eyewear and the respective temple for the earpiece or earplug is not supported over the wearer's ear. Preferably both temples are only supported by their respective rear earpiece or earplug. The earpieces of some embodiments sealingly and protectively plug the ear canal of the wearer. The eyewear may include an optional microphone, whether as a boom-mounted microphone or an ear microphone, and may include audio earpieces for reproducing sound from an audio signal source.

Abstract: Light and compact spectacles which can be easily put on and can be surely held on the face are provided. Furthermore, the spectacles which can be easily put on and taken off are provided. The spectacles according to the present invention have two nose pads (18, 18') and two temple pads (24, 24'). The nose pads (18, 18') extend from a bridge (14) having an elasticity for connecting between two lenses (12, 12'). Temple pads (24, 24') are mounted to temple arms (20, 20') extending from the two lenses (12, 12') to pit regions of both temples of the head and having the elasticity. When the spectacles are put on, the nose pads (18, 18') push on both the sides of the nose. The temple pads (24, 24') are pushed onto the pit regions of the temples at both the sides of the head by a stress from the respective temple arms (20, 20'), and they are fixed at the pit regions. Furthermore, the spectacles have grips (16, 16') protruded from the bridge (14). The grips (16, 16') can be grasped by fingers.

Abstract: An eyeglass interface system is provided which integrates interface systems within eyewear. The system includes a display assembly and one or more audio and/or video assemblies mounted to an eyeglass frame. The display assembly is mounted to one temple and provides an image which can be viewed by the user. The audio or video assembly is mounted to the other temple and is in communication with the display assembly. The audio or video assembly may comprise a camera assembly and/or an audio input or output assembly, such as a microphone and/or speakers. The camera assembly is placed on the temple to record the visual field observed by the user. A head-tracking assembly may be provided to track the position of the user's head. A number of applications can be provided with the present system, such as a telephone system, pager system, or surveillance system.

Abstract: A wearable personal audio apparatus includes one or more wearable U-shaped loop members adapted to fit an individual in a plurality of positions on the individual's body, particularly around the head and neck. The plurality of positions can include positions across the forehead, top or back of the head of the individual, and around the front or back of the neck of the individual. The loop member can have an eyewear receiving member which selectively receives an eyewear insert to provide protective or corrective eyewear when the loop member is worn on the front of the head of the wearer. In one embodiment, a plurality of sets of quick-connect interface ports are disposed around the loop member to selectively receive a plurality of external audio transducer modules. The quick-connect interface ports provide a respective communication path between each of the external audio transducer modules and an audio circuit which can be either external to the loop member or contained within the loop member.

Abstract: An attachment (10) for safety eyeglasses includes a mount (30) that mounts on an eyeglass temple bar, an earplug (32) that can fit into the ear canal to block noise, and a coupling (34) that connects the mount to the earplug. The mount includes a tube of elastomeric material that can be stretched over the temple bar to fix its position and prevent "jiggling". The coupling includes a wire of resilient plastic that is wound into a tight helix. The diameter of the helix is about 1 cm, which allows it to be stored between the rear of the outer ear and the skull, to minimize earplug motion when the earplug is not inserted into the ear canal.