Abstract: Eyeglasses have a vertical midplane of symmetry and comprise a front optical portion and two wire temples each associated with a respective side zone of the front optical portion. Each temple has a hinge end shaped as an eyelet lying in a vertical plane intersecting a general longitudinal direction of the temple. A hinge element is fixed on an inside surface of the corresponding side zone to receive the eyelet to pivot about an axis that is substantially normal to said inside surface, between a deployed position in which the temple is substantially perpendicular to the front optical portion, and a folded position in which the temple is substantially parallel to the front optical portion.

Abstract: An eyeglasses includes a pair of lenses, a bridging member, a pair of temples with hook ends that have pivotal end sections, and a pair of coupling units interconnecting the lenses and the temples. Each of the coupling units is in the form of a bent wire, and has a coil-shaped end defining a chamber and a bend portion extending from the coil-shaped end. The pivotal end sections of the hook ends of the temples are received in the pivotal chambers in the coil-shaped ends of the coupling units so as to be turnable relative to the coil-shaped ends between extended and retracted positions.

Abstract: A hinge wing (10) with flexing device for temples of eyeglasses, comprising a box-like element (11) which has, on the face (14) to be welded to the temple (12), an opening (24) for accessing its interior through which it is possible to insert, in a pre-assembled configuration, an elastic element (19) and the portion (16) of a male hinge element (17). The male element (17) is stably retained, with its corresponding portion (16), inside the box-like element (11) exclusively by a radially deformable open elastic ring (26) which is interposed, on the tip (18), between the elastic element (19) and the portion (16) that is coupled by side-fit mating to the box-like element (11); the ring (26) is inserted in an adapted slot (27) of the box-like element (11) whose perimetric dimensions are smaller than the dimensions of the ring at rest, and the ring is retained axially in the slot by its outer edge and radially by the pressure applied by its deformation produced by insertion.

Abstract: Disclosed is eyeglasses having hinges each comprising a coupling member formed of wire material, having a curved portion at one end thereof and being secured to a lens or a rim at the other end, and a fit member which is provided at one end of a temple and is fitted between wire materials of the curved portion to be rotatable, wherein the coupling member is fitted in a groove formed in the circumferential direction of the fit member and the coupling member and the fit member are brought into contact at least at two points.

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: To generate elastic force in temples and to hold a head with pressing force generated by this elastic force so as to make eyeglasses fit more comfortably. An end of an endpiece to be mounted to a lens is bent, and an endpiece part in a polygonal shape is rotatably mounted to the end. A central portion of the endpiece is pressed against one side of the endpiece part in a normal state. An end of the temple in contact with a user's head is fixed to the endpiece part. As the temple is opened, the endpiece part rotates and the one side then turns from the state of being in contact with the central portion of the endpiece, generating working force so as to return to the initial state and then generating the elastic force in the temple thereby.

Abstract: The present invention is about a guiding sheath with spacer for the hinge of eye-glasses, such that the sheath provides low frictional spacer to titanium alloy hinges. Sheath with spacer made from bronze or synthetic rubber with frictional coefficient less than that of titanium alloy can effectively lower the wear and tear at the hinge due to friction, enhance the smooth folding of the hinge, and thus extend the durability of the hinge. In addition to providing spacer, the present invention also provides positioning latch to the active core of the hinge and lateral support to the shaft during displacement, effectively enhances the stability of the shaft during displacement.

Abstract: A spring hinge for eyeglasses comprising a spring member provided on the side of the temple; the spring member having a flexible press portion for flexibly pressing, from the inside of the armor, an arc periphery of the intermediate connecting member which arc periphery is formed by a center of the pivot shaft.

Abstract: Disclosed is an improved hinge structure for joining a temple and a front or lens rim together in eyeglasses. It comprises two semicolon-like rotary pieces each having a step-like circular extension integrally connected to its triangular block. The step-like circular extension has a through hole made therein. The semicolon-like rotary pieces are so combined that their step-like circular extensions are laid on each other, with a flat washer sandwiched therebetween. The semicolon-like rotary pieces are joined together by inserting a pivot pin in the through holes of the step-like extensions with another flat washer laid on one side of the so combined rotary pieces, and with the outward-curved resilient washer laid the other side of the so combined rotary pieces. The pivot pin is swaged against the so combined rotary pieces. The triangular blocks of the rotary pieces are to be fixed to the temple and the front or lens rim of the frame.

Abstract: An eyeglass frame includes a lens frame with two opposite end portions, each having a top wall formed with a bow retaining hole, a bottom wall formed with a bow mounting hole, and an insert slot defined by the top and bottom walls. The bow mounting hole has a first hole portion aligned with the bow retaining hole, a second hole portion offset from the bow retaining hole, and a restricted intermediate hole portion intercommunicating the first and second hole portions. Each of the bows has one end formed with a mounting shaft which has a retaining protrusion and a mounting protrusion opposite to the retaining protrusion.

Abstract: A replaceable spring arm structure for a spectacles includes an elongated spring arm which has a front end connected to a respective side extension of the spectacles and is detachably disposed in the slider cavity provided on a front end of a temple of the spectacles in a slidably movable manner, a locking member slidably mounted on the spring arm for locking with the locking through hole of the slider cavity so as to securely hold the spring arm in the slider cavity, and a resilient element which is mounted on the spring arm for applying an urging pressure against the spring arm, so as to normally retain the spring arm at an innermost position of the slider cavity. During folding and unfolding the spectacles, the spring arm is driven to slide outwardly along the slider cavity by a pulling force applied by the respective temple, so as to compress the resilient element.

Abstract: The invention concerns a device a fixing member associated with the hinge element and anchored by overmoulding in a frame bow or front flank obtained by moulding. Said fixing member comprises a first plate bearing the hinge element, or the housing, and which via a central bridge is linked to a second plate extending substantially parallel to the first. The central bridge extends transversely in said bow or front flank while being completely embedded in the moulded material of said bow or front flank. The second plate projects outside the outer surface of the bow and of the front flank and has a surface forming an ornament.

Abstract: An eyeglass frame comprising a frame front, a pair of temple bars and respective hinge means, adapted to provide a pivotal connection of each temple bar with the frame front. According to the invention each hinge means comprises a cooperating pair of friction members (13,15) and a spring means (13) adapted for applying balanced, radially directed biasing forces onto the cooperating pair of frictions members. Hereby any play in the hinge is eliminated and the friction is maintained. Further the invention provides an eyeglass and a method of manufacturing an eyeglass.

Abstract: The invention is an improved connection of ear upholders for integrally molded arch eyeglasses comprising a lens and a frame. The connection ends of the ear upholders form curved hooks. When the ear upholders are unfolded prior to wearing the eyeglasses, the hook rim of the connection end will gradually reach against a lateral rim of the eyeglasses frame. When the angle for unfolding the ear upholders is limited to a direction perpendicular to the eyeglasses frame, users may unfold the ear upholders and fix them in the preset right angle automatically without adjusting the positions of the ear upholders.

Abstract: A washer 20 is provided with a slit portion 21 so that arm portions 22 and 22 are formed. The arm portions 22 and 22 are provided with engaging claw portions 23a and 23b which engage with an engaging step portion 27 and an engaging projecting portion 28, respectively. When the temple section 8 is moved to rotate outward against the elastic force of the arm portions 22 and 22, the arm portions 22 and 22 bend inward (a gap of the slit portion 21 becomes narrower) and the templesection 8 can be moved to rotate elastically outward within the limits of bending.

Abstract: The invention relates to a spring hinge for spectacles, having a housing (3), a hinge part (5), which is arranged such that it can be displaced at least partially within the housing (3), a closure part (7), which is arranged in the housing (3), a spring (9), which is supported on the hinge part (5), on the one hand, and on the closure part (7), on the other hand, and having a stop device which has two stop elements. The invention is distinguished in that one stop element (33) is arranged on the hinge part (5), and the other stop element (63, 67) is arranged on the housing (3) or on the closure part (7), such that the capacity of the hinge part (5) for displacement counter to the spring force of the spring (9) is limited to a predetermined distance (w).

Abstract: A temple structure for eyeglasses is formed of a spring hinge box, a piece of elastic metal wire folded in two, a flange connecting the spring fringe box and the piece of elastic metal wire, and an ear chip. The spring hinge box has a one-piece knuckle and a hollow with an opening, on its front side, and a longitudinally frontward threaded hole at the end of its rear side. The piece of elastic metal wire folded in two is designed to have its two free ends located near the ear of a wearer with its head portion positioned on the side face of the spring hinge box and its arm portion formed in a streamline or tear-drop shape to have a hollow. The flange, provided with a screw hole, is positioned in the hollow, through which a screw is driven into the threaded hole provided at the rear end of the spring hinge box, thereby fixing the piece of elastic metal wire onto the side face of the spring hinge box. The two free ends of the piece of elastic metal wire are fit in the ear chip.

Abstract: An apparatus for releasably attaching a temple to a lense frame. In one aspect, the inventive apparatus comprises: a grasping mechanism, at the forward end of the temple, for releasably, pivotably, and directly grasping a hinge pin provided on the lense frame, and a finger-operatable actuator for actuating the grasping mechanism to selectively release and pivotably grasp the hinge pin. When the grasping mechanism is secured to the hinge pin, the forward end of the temple will preferably be positioned directly adjacent to the lense frame such that the grasping structure is substantially hidden from outside view. Alternatively, the apparatus can comprise: an insert structure pivotably attached to the lense frame; a cavity provided in the forward end of the temple for receiving the insert structure; and a catch mechanism for releasably retaining the insert structure in the cavity.

Abstract: A magnetic coupling system for securing a temple to an eyeglass hinge includes a pivotal flange on the rear end of the eyeglass hinge and one clipping structure formed on the front end of the temple. One coupling magnet is provided in the pivotal flange of the eyeglass hinge. The clipping structure includes a pair of opposed pivotal flanges spaced one from the other to capture the pivotal flange of the eyeglass hinge therebetween and two magnets respectively secured in the pair of opposed pivotal flanges for respective magnetic coupling to the coupling magnet in the pivotal flange of the eyeglass hinge. Therefore, the temple is pivotally coupled to the eyeglass hinge in a magnetically reinforced manner.

Abstract: A turning mechanism of a temple with respect to a bracket capable of always keeping the resistance force relative to the turning of the temple T with respect to the bracket and of regulating the resistance force. The turning mechanism comprises a shaft supporting portion provided on the bracket and having a hollow hole section therein, a shaft portion provided on the temple and having a hollow hole section therein, and an expansion member, wherein the expansion member is press-fitted in the hollow hole section of the shaft portion in a state where the shaft portion is fitted in the shaft supporting portion to produce a friction force due to a pressing force of the expansion member, thereby applying a resistance force against the turning of the temple.

Abstract: An eyewear assembly that is capable of biasing a temple arm tightly against a rim frame so as to pinch a storage surface therebetween for storage purposes. The eyewear assembly includes the rim frame having at least one pivot axis through the rim frame. The temple arm includes a pivot axis through the temple arm, with the pivot axis being coaxially disposed with the pivot axis of the rim frame. A device for clasping the temple arm and rim frame together in both an open and closed position is mounted proximate the pivot axes. The rim frame engages the temple arm to bias the temple arm against the rim frame—thereby establishing a predetermined load on the rim frame in the closed position. The device for clasping further includes a clasping feature located on the rim frame and a clasping feature located on the temple arm, with one of the clasping means including a detent and the other clasping feature including a pawl that engages the detent.

Abstract: A spectacle frame includes one or more frame members for receiving lenses and having an intermediate bridge portion and each having a temple portion. The bridge portion and the temple portions each has or each is formed with a pair of extensions. A clamping device is engaged onto or pivotally coupled to each pair of extensions for forcing the extensions toward each other and to retain the lenses within the frame members. The lenses may be engaged easily into or disengaged from the frame members when the clamping devices are disengaged from the extensions.

Abstract: A device for use with a hinge in which two rigid elements (104, 105) may be placed in various relative angular positions, wherein the elongate part (109) to be protected and guided consists of a section or tube inserted through two mutually facing channels (111, 110) in respective ones of the rigid elements (104, 105). The device includes a movable member (107) arranged between said rigid elements (104, 105) and at least rotatably movable about a rotational axis of said hinge. The member further includes a hole (108) through which said elongate part (109) may inserted.

Abstract: Hinge and one or more wires, or electrical conductors, wherein a segment of such wire or wires extends axially through at least one hollow pivot pin portion of a hinge and wherein such segment of the wire or wires is placed in torsion upon the hinge being pivoted.

Abstract: An ear-piece assembly for connecting an earpiece to a spectacle frame. The ear-piece assembly having a box with an opening in a hinging side wall. A tie-rod hinge having first and second hinge ends and a center portion located between the first and second hinge ends, the first hinge end having at least one wing and being located inside the box and the second hinge end being located outside the box, the tie-rod hinge is slidable through the opening in the hinging side wall. The ear-piece assembly also having at least one spring with first and second spring ends and being located inside the box, the at least one spring is not surrounding the tie-rod hinge, and the first spring end is in abutment with the hinging side wall of the box and the second spring end is in abutment with the at least one wing.

Abstract: An elastic hinge for eyeglasses comprising, at the end of a temple, an eyelet-shaped element suitable to engage, by means of an articulation pivot, two elements having the same structure and protruding from the front. Starting from the eyelet-shaped element, the following elements are assembled in sequence on the temple: a slider with a spoon-shaped end; an elastic element; and a contrast element which extends with a hollow structure so as to conceal the elastic element and at least partially conceal the slider. An annular locking element is at least partially interposed between annular abutment regions of the contrast element and of the temple, is inserted from the free end of the temple and can be deformed elastically with its locking parts so as to move beyond the abutment region of the temple.

Abstract: A temple, for eyeglasses, comprising at least one rigid support which is associated with a front and with which at least one softer element, suitable to act as a hinge, is in turn associated.

Abstract: A hingeless temple for eyewear comprises a unitary length of flexible material such as a shape-memory metal or metal alloy which has a forward section, an elongated section and a flexible pivot section between the forward and elongated sections. The pivot section is characterized by three bends which form a generally serpentine configuration. In the unbiased position, the temple extends in the open position with respect to the eyewear front. Means are provided for selectively and releasably closing the temple in the folded position with respect to the eyewear front. When the closing means are released, the temple automatically pivots to the open position. The front end of the temple may be attached directly to the eyewear front, thereby negating the need for a separate hinge assembly.

Abstract: A hinge connection for a temple piece of an eyeglass frame having a hinge pin extending from a portion thereof. The temple piece includes a resilient portion biased against the hinge pin so as to attach the temple piece to the eyeglass frame. The temple piece is rotatable about the hinge pin and the resilient portion provides a tight hinge connection with the hinge pin and compensates for wear between the hinge pin and temple piece over extended use of the eyeglass frame.

Abstract: Disclosed is an eyeglasses frame comprising a front having two rims connected each other with a bridge and two temples foldably fixed to opposite sides of the front. Each of the temples is connected to one or the other side of the front with at least one coiled spring, which can be changed in diameter or twisted so that the associated temple may be opened wider than the normal opening position, and may be changed vertically in posture. A temple-less auxiliary eyeglasses can be used in combination with the eyeglasses. The temple-less auxiliary eyeglasses have L-shaped catch pieces formed on its opposite sides, which L-shaped catch pieces can be fitted in the coiled springs.

Abstract: Hinge and one or more wires, or electrical conductors, wherein portion of such wire or wires extends axially through the hollow pivot pin of a hinge and wherein such portion of the wire or wires is placed in torsion upon the hinge being pivoted.

Abstract: A goggle frame with quick fitting sides includes comprised of a conformation (1) joint to a goggle frame (2), basically composed by two horizontal and parallel plans (3) structured by a cross front-vertical blade (4), by a narrow side with elongated superior profile (5) and by a thin blade (6), with said profile (5) receiving the fitting of side (7) which trespass the hole where the transparent lens will be fitted, which end is provided with a reinforced conformation (8) and with an edge (9) to its fitting slightly inwards which, with the lens replacement, prevents the eventual escape and the fall of the goggles, said blade (6) operating as rotating limiter and preventing that the sides open more than the desired angle, which development has as purpose to make very easier the process of assembly and even the exchange of broken sides in the goggles frame, making them fully dismountable, particularly those used as safety equipment in manufacturing plants and similar.

Abstract: A bi-elastic device for the elasticizing of ear-pieces for spectacles, comprising a small box that is combined with the ear-piece by spot-welding and pre-assembly. Inside the small box are housed at least two springs, each of the springs on one side having an end in abutment on the small box, and on the other side having the other end in abutment of an end of a tie-rod. The tie-rod is substantially "L" like and the springs are placed adjacent and parallel to the end of the tie-rod. The opposite end of the same tie-rod is external to the small box, and is hingeable to a corresponding small front face provided on a frame of the spectacles.

Abstract: A locking block screw connection provides material-elastic protection against loosening of the screw by a novel configuration of the connection zone, where a bore and a screw are engaged. The bore is provided with a circular taper at the thread runout. The screw has a pin continuation where an annular groove is provided. When the screw is screwed into the bore, the taper of the bore is elastically deformed until the taper engages in the groove of the screw. The engagement between the taper and the groove provides an axial security against loosening of the screw.

Abstract: Face conforming eyewear includes a rotation limiting hinged bridge and flexible temples with open barrel hinges to reduce the inflexibility of the eyewear frame. The preferred temples have a greater than 90.degree. movement, up to about 105.degree., with respect to the frame. The extra degrees of movement of the temples and the limited rotational movement of the hinged bridge, from about 4.degree. to about 12.degree., allows opposed sides of the frame and the temples to shift and to absorb pressure when contact has been made with the eyewear, especially when worn in active sports. The bridge can incorporate a single or double three barrel hinged.

Abstract: An eyeglasses assembly includes a pair of glasses formed as a one-piece molded body, a pair of pivot parts, and a pair of temples. The glasses have inner end portions connected to each other, opposite outer end portions which are curved rearwardly, and a top edge extending between the outer end portions. The pivot parts are disposed on the outer end portions. Each of the pivot parts has parallel upper and lower plate members projecting transversely from the outer end portions. Each of the plate members has a front end located below the top edge, and a rear end located at a level below the front end. Each of the pivot parts further has a pivot pin passing through perpendicularly and mounted on the upper and lower plate members.

Abstract: An elastic spectacle frame comprises, on one side, a male charnier consisting of one end of a rod (12) solid with the middle part of a transverse connecting hinge pin (14), and a bearing surface (26) facing at least each portion of the pin protruding from the rod. The pin and the bearing surface being normally biased towards one another in the longitudinal direction of the rod by an elastic biasing mechanism (20,30,32), but are selectively movable apart from one another against the action of the elastic biasing mechanism. On the other side, the hinge comprises a female charnier (42,52) having eyelets (45,55) whose periphery, against which the surface comes to bear, is in the form of a cam, wherein at least one of the eyelets has a radial passageway (46,56), and wherein the interstice (49,59) between the eyelets is at least as big as the rod (12).

Abstract: An elastic temple for eyeglasses includes a temple body, a sleeve, a compression spring and a fixing member. The temple body has a front combine member to be pivotally combined with a lens frame, fitting through the sleeve and the compression spring and the fixing member. The compression spring is contained in a rear passageway of the sleeve, and the fixing member pushes the rear end of the spring and is fixed firmly on the temple body. The sleeve can be pushed by the spring and move between the front combine member and the fixing member so that the temple body may be swung outward and back to its original position, with a screw connecting the lens frame and the elastic temple functioning as a pivot.

Abstract: Eyeglasses having lenses, a lens frame, temples and hinges that connect the lens frame with the temples. The hinge parts are provided with elasticity or play. At the ends of the lens frame, hinge projections each having a deep hole and an elongated hole are established. At one end of each temple, a hinge thick part having two holes on the same axis is provided. A leaf spring is inserted in the deep hole, while a stem that runs through the elongated hole of the hinge projection and the two holes of the hinge thick part is provided so as to act on the leaf spring. The deep hole is the widest at its open end, and gets gradually narrower towards its deepest end. The leaf spring is preferably provided with a bendable part.

Abstract: The resilient hinge includes a first hinge (1) integral with the face part (2) of the frame of glasses, hinged by means of a screw (3) to a second knuckle (4) connected to a side piece (5) by means of a resilient device (6) with a spring. The latter biases resiliently al front part (12) of the branch (5) against cams (20, 21) integral with the first knuckle (1) and defining two stop positions for the side piece (5). A small plate (32), made of a low-friction material and having a shape bent at a right angle, is placed between the front part (12) and the cams (20, 21). This construction makes it possible to prevent the hinge from blocking, to reduce the friction between the movable parts of the hinge, to increase the bearing surface of the cams and increase the mechanical strength and the durability of the hinge.

Abstract: The eyewear for industrial use comprises a deformable arcuate lens with a pair of temple receiving entries at opposite ends thereof, a deformable brow frame shaped to fit the upper edge of the lens so as to be engageable therewith and a pair of temple pieces, each piece being hingedly connected to a respective opposite end of the brow frame. Assembly of the temple pieces and brow frame to the lens is easily effected by inserting the temple pieces in the entries of the lens and by snap engagement of a mid-section of the brow frame to the upper edge of the lens. The assembly is made of plastic material so that it may be resiliently deformed to adapt to the various sizes of head of users.

Abstract: A pair of eyeglass frames is provided which includes a pair of eyewires, each adapted to encircle a lens, two engagement pins formed at end of each of eyewire, two hinge structures, each holding fixedly the engagement pins of corresponding eyewires, two temples, each rotatably fixed to a hinge structure, each hinge structure articulating each of the corresponding temples and eyewires and comprising upper and lower sections to hold one of the temple and the corresponding eyewires rotatably relative to the other of the temple and the corresponding eyewire between the upper and lower sections.

Abstract: Spectacles frame comprising a frame body (10) and two side arms (12, 14) insertable into the upper portion (24) of the body and withdrawable therefrom into the use position. The side arm housings in the upper portion (24) consist of a single tube (26) into which both side arms may be fitted. The tube has tow opposite open ends (30, 32) at opposite side ends of the upper portion (24) of the body (20). The front ends (12a, 14a) of the side arms (12, 14) are tapered and the side arms may be folded across one another so that both may be inserted into the tube (26).

Abstract: A hinge for glasses pivotably connects an endpiece (2) attached directly on a lens (3) or provided on a frame with a temple (1). The hinge has a hinge pin (12) held rotatably in a hinge support (22) of the endpiece (2), which hinge pin is disposed on the temple (1). The hinge pin (12) forms a predetermined breaking point (122) for the hinge, which releases the temple (1) when an admissible force on the endpiece (2) is exceeded. A preferred embodiment is described, according to which the hinge pin (12) is formed in one piece with the temple (1) in an injection molding process.

Abstract: The present invention relates to a resilient hinge which includes a front knuckle fixed to a front lug and an arm knuckle fixed to an arm. The two knuckles are connected by a hinge pin and have two contacting faces perpendicular to the hinge pin. The contacting face of one of the two knuckles has at least one raised portion with an oblique side interacting with one or more recessed portions of the contacting face of the other knuckle. The knuckles move in relation to each other along the connecting hinge pin and against the force exerted by a resilient device coaxial with the hinge pin when the raised portion leaves the recessed portions in the event of the arm rotating with respect to the front lug.

Abstract: A part-to-part joint structure for fixing a first eyeglasses part to rotate relative to a second eyeglasses part in a pair of eyeglasses is provided comprising: (a) a ring-like piece having a joint extension integrally formed thereto for fixing to the first eyeglasses part; (b) a hammer head-like projection integrally connected to the second eyeglasses part to be press-fitted in the ring-like piece; and (c) an annular bush of a flexible material, the annular bush being so sized that the annular bush may be press-fitted in the ring-like piece, and the hammer head-like projection may be press-fitted in the annular bush, thereby fixing the second eyeglasses part rotatably to the first eyeglasses part, wherein at least one of the ring-like piece and the annular bush has a horizontal slot made therein for permitting the second eyeglasses part to rotate in a limited range, relative to the first eyeglasses part.

Abstract: An eyeglass construction includes a hinge joint and temple bars with spreadable jaws with apertures that receive frame hinge pins. A unique key-and-lock mechanism is provided for spreading the temple jaws and holding them apart while interchangeable temple bars are removed and installed. A separate key having a lobe-shaped shank with an elliptical profile corresponds to a similar aperture through a slot in each temple bar so that when the key is turned, the jaws at the end of the temple bar are spread apart and held in a retracted state. A simple internal leaf spring molded into the temple bar bears upon a cam surface of the eyeglass frame so that a positional biasing of the temple bar is achieved.

Abstract: The present invention relates to a resilient hinge for spectacle frames. The hinge includes an inner male or female knuckle fixed to the end of a frame lug extending in a direction and an arm substantially in the extension of the lug and abutting against the lug when the arm is in its normal open position. The inner side of the arm is connected to the knuckle by means of a rigid return device which can rotate freely about the knuckle and operating by bending. The pivot point of the return device about the swivel pin of the knuckle or the swivel pin of the knuckle itself is flowing and able to move between two extreme positions respectively corresponding to the normal open position and to an additional position in which the arm is moved beyond the normal open position.

Abstract: An earpiece for eyeglasses is characterized by an earpiece body (1) having an eyelet (2) at its end and a threaded section (6) on which is screwed a sleeve (10) containing an elastic mechanism (9) suitable for pushing a cursor (8) against the eyelet (2) so that the distance between the sleeve edge (10a) and the cursor body (8c) can be adjusted.

Abstract: A hinge, in particular for the lateral arms or the bridge of a metal wire, even rimless, spectacle mount; the hinge having a first portion defined by an end group of over one and a half (e.g. one and three-quarter) coils and formed by bending a first metal wire element of the mount, e.g. the connecting end of a lateral arm, and a second portion defined by a partially open toroid portion (at least one, even incomplete, coil or circle or ring portion) formed by bending one end of a second (fixed) metal wire element of the mount; the (partially open) coil or toroid portion of the second portion winding about an angle of over 180.degree.