Abstract: Disclosed is an eyeglasses frame using temple joints improved according to the present invention. Each hinge assembly is fixed to the joint piece of either side of the frame. It comprises an engagement piece having an axle transversing in its recess end, and a hollow sheath having a lever pivotally fixed to its open end and a spring-biased slider contained therein. The slider has a hook end. The engagement piece is fixed to the joint piece, and the sheath is fixed to the temple. The temple is connected to the front by inserting the hook of the slider in the recess of the engagement piece, and then the temple is pulled to the engagement piece by the resilient force, which is applied to the slider all the time. Thus, the temple-to-front connection is assured to be tight, still permitting the stable opening-and-folding of the temple relative to the front.

Abstract: A spectacle frame includes a nose bar, a pair of eyewires each having one side connected to the ends of the nose bar and end pieces on their other side and a pair of temples pivotally connected to the end pieces of the eyewires. The nose bar and/or the pair of temples include at least three links having interengaged end portions. These links are fixedly connected, although some limited articulation may be provided. The spectacle frame desirably includes a unique hinge assembly for the temples and may also include inserts bonded to the eyewires to permit mechanical engagement with the nose bar. The spectacle frame may also include a brow bar which is threadably captured in bosses on the eyewires.

Abstract: An elastic hinge for a pair of spectacles is made, on the one hand, of a front-hinge element (10) securely fixed to a side lug (6) of the front part; and, on the other hand, of a side-hinge element (20) connected by elastic biasing means (12, 30, 40, 44) at the end of the side arm (8). The outer edge of the end (9) of the side arm (8) bears against a fixed heel (7) extending from the lug (6) or integral with the front-hinge element. This heel (7) extends beyond the axis (15) of the hinge by a distance (d) greater than 0.3 millimeters. Moreover, the side-hinge element (20) has, in its face directed towards the side arm, a recessed edge (32) which after rotation through a desired maximum angle (.theta.), comes to bear against the abutment-forming inside angled edge (5) of the heel (7).

Abstract: A foldable elastic temple for spectacles having a front half temple elastically combined with a lens frame by means of an elastic assembly consisting of a connector, a socket, a spring and a bolt, the elastic assembly fitted in a front chamber provided in a front end portion of the front temple to provide the front half temple with elasticity to be stretched outward for wearing on any size of a face, and a rear half temple combined pivotally with the front half temple to allow the front half temple folded on the rear half temple for minimizing the length of the temple in putting away.

Abstract: Eyeglasses with spring temples that the temples can be opened exceeding en opening angle of 90 degrees, and are provided with a spring force to some extent in the folding direction so as to fit people with a wide face or a narrow face. Mounting portions of the temples are made of two wire rods, ends of the two wire rods are bent to form engaging pieces, receiving members disposed on a glasses frame are formed with two engaging holes in parallel substantially along the width direction of the glasses frame, and the engaging pieces of the mounting portions are fitted into the two engaging holes to attach the temples. Each temple body is made of one wire rod bent into a double line, and its starting end and terminating end have the engaging pieces provided to form the mounting portions.

Abstract: A pair of spectacles includes a mechanism for securing a spectacle temple to the frame. The mechanism includes a rod having one end pivotally coupled to the frame and one or more recesses formed in the other end. A block has one end contacted with the rod and has one or more ribs for engaging with the recesses of the rod. The block is fixed to the spectacle temple. A spring biases the block toward the rod so as to engage the ribs with the recesses in order to position the block relative to the rod such that both the block and the rod can be easily engaged into the spectacle temple.

Abstract: A connecting structure for connecting a glasses temple with a glasses frame is disclosed. The connecting structure includes a hinge means composed of a first hinge member and a second hinge member, a U-shaped resilient member, a compression spring and a rivet pin, wherein the first hinge member is fixed on one side of a glasses frame and pivotally connected with the second hinge member by a screw. The second hinge member is formed with a rear shaft hole and the rivet pin has a head portion and a shaft portion. The U-shaped resilient member has two slightly outward stretched free ends and is disposed at a rear end of the second hinge member.

Abstract: Disclosed is an eyewear system designed to improve the comfort, fit, functionability, and modularity of the eyewear. Features include a 180.degree. reflex spring hinge which improves comfort, fit, and safety; a sway-hinge mechanism that allows the temples to be independently adjusted to improve comfort and fit of the eyewear behind the ears; a strap-pad which has been ergonomically designed to fit different shaped and sized noses and can be positioned for wearer comfort and convenience; a frame and lens construction that allows for modularity by the easy removal and replacement of the lens, temples, tops of frames, and nose pieces; and accessories that can be added to the eyewear to provide a greater degree of comfort and to protect the face from ultraviolet radiation and the wind.

Abstract: An eyeglass system (10) is provided for mounting aesthetic trim members (20) on an eyeglass frame or attachment member (12). Aesthetic or trim members (20) are removably securable and slidably mounted on a portion of a frame transverse extension member (28) which in turn is rigidly secured to the eyeglass frame or attachment member (12). The aesthetic member (20) is releasably secured to the eyeglass frame (12) by a spring biased projection mechanism (46) mounted within the temple member (18) of the overall eyeglasses. The spring bias projection member (46) includes a projection member which is slidably displaceable into and out of a path of removal (42) of the aesthetic or trim member (20). In this manner, differing aesthetic members (20) may be interchanged by the user at his or her discretion.

Abstract: An adjustable eyeglass bow includes an elongated metal bow and a molded plastic connector seat having a rear end provided with a socket to securely receive one end of the elongated metal bow and a front end provided with a longitudinal blind bore. A washer divides the blind bore into an outer receiving chamber and an inner receiving chamber. A bolt piece is disposed in the blind bore and has a head portion extending into the inner receiving chamber and a threaded end portion passing through the washer and into the outer receiving chamber. A hinge piece includes a shaft portion slidably extending into the outer receiving chamber and having a rear end provided with an axial screw socket to engage the threaded end portion of the bolt piece. The hinge piece further includes a rounded pivot projection formed on a front end of the shaft portion and extending out of the outer receiving chamber to permit the mounting of the adjustable eyeglass bow onto a lens frame.

Abstract: A longitudinally adjustable bow for classes having two sections. A first bow section is formed as a closed hollow section having at least one catch. The second bow section is slidably guided in the first bow section, and has a plurality of stop notches which face and engage the catch and a turned-back extension at its inner end forming a pre-stressed spring facing away from the catch, against the force of which the second bow section can be moved relative to the first bow section for disengagement of the stop notches.

Abstract: The elastic hinge comprises a hinge element (5) fixed to the front part of a spectacle frame and a hinge element (8) integral with a rod (11) inserted in the bore (9) of a housing (10). The rod (11) is pressed to the rear of the temple by a spring (16) which presses on the one hand against a collar (17) integral with the rod (11) and on the other hand against a ring (25) having a rib (26) which engages elastically on a shoulder (27). As a result of this arrangement, the fitting of the elastic assembly in the bore (9) is substantially simplified.

Abstract: The present invention concerns a bar for spectacles formed in two parts of relatively stiff plastic material, joined together by means of an elastic springing element in the form of a spiral spring. According to the invention, said elastic element also comprises a flat spring with surface positioned on a vertical plane, said spiral spring being wound in tight coils around a central part of said flat spring and being checked on opposite sides by two stop rings, the end parts of said flat spring forming means of anchorage into the two bar portions of plastic material.The invention also concerns a method for manufacturing said bars for spectacles, wherein said end parts of the flat spring of the elastic element are enclosed into a respective box of an injection mold, using said stop rings of the elastic element to delimit and close the mold, plastic material being then injected into said boxes to incorporate said end parts of the flat spring.

Abstract: Spectacle frame comprising a lens retaining portion (A) with lateral extensions (A') allowing flexible articulation of the side arms (C), characterized in that said extensions (A') are hollow and open in the direction of the side arms (C), each side arm (C) being provided with a connection part (B) having an internal transverse slot (3). Each side arm is provided with an S-shaped spring (1) that forms hooks (1', 1") at each end, the first end (1') being insertable into slot (3) of connection part (B), while the other end (1") is insertable into hollow extension (A'), which is so formed as to allow articulation of arms (C).

Abstract: This invention relates to eyeglasses comprising spring hinges which permit the bows of the eyeglasses to be forcibly swung out beyond open positions which are defined by stops so that the bows can resiliently bear on the head of the wearer. The spring hinges may provide for a snap action on the bows as they are moved between their swung-in and their open positions. For making each of the hinges, a preassembled unit is provided, which comprises a rim-side hinge eye connected to a slider, which contains a spring-biased plunger, a spring and a locking member. The slider of the preassembled unit is adapted to be inserted into a receptacle provided at the forward end portion of the associated bow and is adapted to be locked in the receptacle by the locking member. The locking member is provided at both ends with beveled end faces.

Abstract: A spectacle frame has temple members each of which can be turned around a corresponding pivot axis between a first position where the temple member is opened with respect to a front rim for use and a second position where the temple member is bent toward the front rim for storage. The frame includes a pair of hinges for connecting the corresponding temple members to said front rim. Each hinge comprises an elastic wire member and a bearing member. The wire member has a pair of arms extending from one end of the corresponding temple member substantially in parallel with a longitudinal direction of the temple member, and a pair of shaft portions each bent from a corresponding arm along the corresponding pivot axis.

Abstract: A motion regulator for a hinge such as, for example, a tripartite eyeglass hinge, with at least two hinge tabs and a hinge screw, a sleeve surrounding the hinge screw disposed in a hinge eye of the hinge tab. The sleeve projects beyond the hinge tab and rests against a neighboring hinge tab or tabs. In order to obtain an objective that a braking torque, determining the motion characteristics of the hinge, is substantially constant and independent of the tightening torque of the hinge screw, a spring-elastic element is arranged at least between the hinge tab wherein the sleeve is located and the hinge tab movable with respect to this hinge tab. The spring-elastic element, resilient in the axial direction with respect to the hinge screw axis, is in contact under a pretensioning with a contact surface of at least one hinge tab, which surface is rotationally symmetrical with respect to the hinge screw axis.

Abstract: The invention is directed to a self-opening spectacle frame wherein the spectacle temples are opened into the position for use via an elastic element with the elastic element not being visible in this position.

Abstract: A spectacle frame comprising a front assembly and a pair of bows hinged to the front assembly and each having an elongated longitudinal core and a number of blocks arranged side by side and through which the aforementioned core is fitted. The frame also comprises a number of connecting elements, each located between a pair of blocks and each having a pair of opposed convex lateral surfaces and a pair of first ridges projecting perpendicularly to the core axis. Each block presents a pair of opposed concave surfaces designed to mate with respective convex surfaces on the connecting elements, and two pairs of second ridges, each facing a respective first ridge on a connecting element, so that, when the bow is flexed, the second ridges of each block on one side of the bow contact respective first ridges on the connecting elements.

Abstract: The frame structure for glasses is constituted by metallic material and includes a pair of rim members for supporting the glasses, a bridge member interposed between the rim members to connect the latter to one another, a pair of temple members and a pair of joint members adapted to connect the temple members to the rim members, respectively. Each of the joint members is fixed to the outside of the corresponding rim member in the proximity of the temple member and has both its end parts fixed to the rim member, and an intermediate part which is free from the rim member. The joint member is formed in an arcuate shape. Alternatively, a pair of joint members may be fixed to a pair of rim members with a bridge member interposed therebetween. Preferably, cobalt-based alloy is employed as the material constituting the joint member.

Abstract: An adjustable temple for spectacle frames wherein the temple includes an inner element which includes a body portion slideable within an outer element and which inner element also includes an outer head portion which extends through an elongated opening in the outer element with such head being selectively engageable with notches formed in the exterior of the outer element and wherein a slideable locking sleeve may be adjustably positioned over the two elements of the adjustable temple so as to retain the two elements in a selectively adjusted position.

Abstract: A spring connected, two-part eyeglass temple shaft together with an operating sleeve which reciprocates longitudinally with respect to the temple shaft for flexing the spring and forcing the rear temple part against the wearer's head and for releasing the spring which then restores the original alignment of the temple parts. The sleeve also provides a rigid structural bridge between the temple parts.

Abstract: The invention provides spectacles in which the distance between two lens frames (1)(2) is variable and which has holders (7)(7a) on the lens frame, a bridge (8) slidably fitted in the holder for connecting the lens frames together and holding means (9) for determining the effective length of the bridge.

Abstract: The present invention provides a hinge for the elastic articulation of a temple piece to the front frame of an eyeglass frame. The hinge includes a first hinge element fastened on the front frame and shaped externally in accordance with a cam profile, a second hinge element telescopically guided on a temple piece and urged by a spring into a retracted position within the temple piece, and a lug fastened on the temple piece and acting on the cam profile.

Abstract: A temple end piece for a temple of a spectacle frame has a first segment extending in the extension of the temple shaft and situated below this a curved contact segment. The contact segment is supported at its lower end by means of a connecting segment extending to the rear of and downward from the first segment, whereby a low-resistance hinge is formed between the lower ends of the contact and connecting segments. At its lower end the contact segment is connected to the first segment via an elastic spring element, which opposes a rotation movement of the contact segment in the hinge with a certain elastic force. The first segment, the connecting segment and also the contact segment can be given rather sturdy dimensions with attention to the requisite rigidity of form of the temple end piece. Yet by virtue of the hinge provision is made for sufficient mobility of the contact segment.

Abstract: The stem device comprises a hollow body having an end and which can be removably associated with a tubular element. Between the body and element, members are provided to afford axial rotation with an elastic return bias acting therebetween. The stem device includes a peg located in an oblique slot for restricting the translatory and rotary movements of the end with respect to the element. The stem device is also effective to be snap-closed and elastically opened to an extra-open angle with respect to the front of a pair of eyeglasses.

Abstract: A spring hinge for eyeglasses in which each bow can be swung out against spring force about a fulcrum spaced from the hinge axis so that the bow will resiliently bear on the temples of the wearer. A spring is secured on a plunger rod between a plunger head at one end of the rod and a stop ring, which is slidably mounted on the rod. The plunger is contained in and releasably locked to a receptacle which is provided on the bow. The plunger rod is connected to a bow-side bearing eye. Owing to that arrangement, the bow-side hinge member and the parts connected to it can be assembled and taken apart by access to only one end of the receptacle.

Abstract: The elastic hinge comprises a box (9) solid with the temple (1) of the eyeglasses, this box containing a part (8) carrying a knuckle (6) and sliding in the box (9) against the action of a spring (11). This spring receives stationary support against a part (12) which is made solid with the box (9) by a ball (14) engaged in a hole (15) of this ball and in a recess (16) of the box. The ball is held in position by a screw (17) which is accessible only in the folded position of the temple.

Abstract: An adjustable loupe frame is provided consisting of telescopic, spring-biased right and left bows and a loupe mounting bracket extending between and joined pivotably to the front ends of telescopic bows. The bows are adjustable to vary the distance between the loupe and the eyes of a viewer, so that an object to be viewed can be focused properly at any time.

Abstract: This invention relates to a bow and spring hinge assembly for eyeglasses, in which each bow can be opened beyond a stop-defined position so that the bow can resiliently bear on the head of the wearer. The novel assembly can be used also with slender and thin bows and provides for a transverse bracing for eliminating a transverse backlash between relatively slidable parts. For this reason the assembly is provided in the slider and in the bow end portion with recesses, which face each other and each of which is provided on opposite sides with inwardly facing track grooves, and I-section members are provided, each of which is in sliding contact with the track grooves of both said recesses so that said I-section members hold said bow end portion and said slider together against a transverse separation.

Abstract: This invention relates to a spring-biased hinge assembly for spectacles. The hinge assembly comprises a bow-side section defining a cavity, and a slider, which carries a bow-side hinge element and extends into the cavity and is adapted to be extended from said cavity against spring action. The bow-side hinge element cooperates with the midportion-side hinge element. The hinge assembly should be slender and should be accommodated to a large extent in the end portion of the bow. For this purpose, the cavity is defined by a flat tubular element, in which a tongue of the slider is slidably mounted. The tongue has a longitudinal slot, in which the return spring extends, which engages an abutment that extends into the wall of the tubular member and through said slot.

Abstract: This eyeglasses temple comprises a leg portion and spring-loaded devices for enabling the leg opening to occur elastically beyond an overcenter position, and enabling the leg to be closed with a snap action. The spring-loaded devices comprises a leaf spring, pivotally inserted into a pocket formed in the eyeglasses leg and acting with its free end onto a head portion made rigid with the eyeglasses frame, and shaped to provide two stable opened-closed positions for the leg, resilient extra opened positions and an opening travel limit stop therefor.

Abstract: The method comprises the steps of making a hinge by using conventional materials and treatments and applying, on the edge of the hinge provided for contacting and biassing a ball member, one or more cup members, made of a hard metal material and effective to provide a cam profile configuration.

Abstract: The invention is for an improved hinge for pivotably connecting an eyeglass temple piece to an eyeglass frame, which permits a stable positioning of the temple piece in a folded or closed position in order to conveniently store the eyeglasses and a stable positioning of the temple piece into a normal open position for wearer use of the frame and which permits still further elastic movement of the temple piece beyond the normal open position without damage to the frames or hinge. The improved hinge includes a rod-shaped slide which is slideably mounted in a seat provided in the end portion of the temple piece and which protrudes from the seat. A hole is formed in the slide which extends coaxially in the slide over a predetermined depth from its protruding end. A slot is formed in the slide which extends longitudinally in the slide over a predetermined length from its protruding end. The predetermined length of the slot is less than the depth of the hole in the slide and the slot debouches in that hole.

Abstract: The spectacle hinge comprises two parts (3) and (4) in order to insure pivoting of the arm (1) on the frame (2). An intermediate part (5) is fixed on the part (3) by means of a screw (6) and includes a portion (11) forming a cam for engagement with an elastic element (12) of the part (4). The part (4) is pivoted on the part (5) by a screw 10' passing through a hole (10). By removing the intermediate part (5) a standard hinge can be pivotally connected to part (3) in order to provide a standard hinge, that is one which does not utilize elastic means.

Abstract: There is disclosed a spreadable bar for eyeglass frames provided with a spring hinge, this latter being fixed to the bar and including a guiding and hinging portion fixed to the eyeglass frame, wherein the guiding and hinging portion is made from a flexible material and at least another portion of the hinge, i.e. the hinge covering portion or casing is made from a synthetic material, such as nylon, polyamide resins, possibly filled with fiberglass and the like.

Abstract: A spectacle-frame side arm is provided which is capable of lateral articulation intermediate its ends to conform to the shape of the wearer's head. The side arm comprises front and rear parts articulated together, and a longitudinal reinforcing lamina extending between the arm parts at least in their zone of articulation. In order to resist torsional stresses about the longitudinal axis of the side arm, the articulated ends of the side-arm parts are formed as interplaced tenons and mortices which extend perpendicularly to the said longitudinal axis. Preferably, the opposing surfaces of the interplaced tenons are separated from each other by a metal spacer element which has a profile similar to that of the articulated ends of the side-arm parts considered in a plane parallel to the longitudinal median plane of the side arm.

Abstract: This invention concerns a frame for spectacles comprising one or more flexible elements fitted between parts of the front and of the sides, in order to make the frame itself highly adaptable to the anatomy of the face; said flexible elements comprise a helical spring and two pins, one end of which engages with said spring whereas the opposite end is secured to said parts of the front and of the sides; the threaded ends of said pins are equal in diameter to the internal diameter of said spring and have a pitch equal to the pitch of the coils of said spring, while their combined length is less than the length of said spring.

Abstract: This invention relates to a spring hinge for eyeglasses having plastic or metal bows. The hinge includes a first hinge member which is adapted to be connected to a bow, and a second hinge member which is adapted to be connected to a frame center part, both hinge members being pivotally interconnected. The first hinge member is connected to an elongated U-shaped slider which extends into and is guided in a flat receptacle provided at the end of the bow. A spring member fitted on a rod is received in the slider for urging the same into the receptacle. The first hinge member has a portion overlapping the receptacle adjacent to the open end thereof. Between the slider and the overlapping portion, the first hinge member is further provided with a bevelled surface for engaging the outlet edge of the receptacle when the hinge is retracted so that there is no backlash during the movement of the bow from the inturned position to the normal open position.

Abstract: A flexible hinge for resiliently connecting the arms and the front portion of a pair of spectacles is described which consists of a shaped wing, by means of suitable connecting members, to the arms, the shaped wing being provided with a housing in which a pressure cylindrical spring is housed. A lever arm is pin pivoted to the end of the wing, the lever arm being provided with a lug capable of engaging with the cylindrical spring, the lever arm being pivoted to the front portion of the spectacles pair, by means of a second pin. In this manner, the arms connected to the front portion of the spectacles pair are capable of being spread apart, by exercising a slight outwardly directed pressure.

Abstract: A hinge for spectacles consists of two parts one of which one has a cam surface while the other part comprises a blind cylindrical housing in which are arranged at least one spring and one ball bearing, with the spring pushing the ball bearing against the cam surface. To avoid excessive wear of the cam surface and to facilitate the dismantling of the hinge, the hinge includes an intermediate part located in the housing between the ball bearing and the spring. The intermediate part provides less friction with the ball bearing than the friction between that ball bearing and the cam surface. The housing is provided with devices for retaining its contents which devices reduce the open cross section of the opening of the housing.

Abstract: A hinge for spectacles includes two parts, the first of which has a cam profile provided by one face of a strip of generally U-shape, the other part comprising a cam follower button of generally rectangular shape. The first part of the hinge is made of a ductile metal whereas the strip providing the cam profile is made of a material having a greater hardness than the first part of the hinge. A spring urges the cam follower button against the cam profile which has a relatively large surface for supporting the face of the button.

Abstract: There is described an eyeglass frame including a molded plastic lens having an integral hinge socket removably receiving a forwardly extending hinge portion of a unitary molded plastic temple member.

Abstract: A resilient hinge for a pair of spectacles comprises a first part fixed to the spectacle frame and a second part hinged on the first part. The second part is extended by a cylindrical tube on which is slidably mounted a cylindrical sleeve to which an arm is fixed. A transverse pin fixed in the sleeve passes through opposed slots in the tube to angularly fix the sleeve on the tube. A spring in the tube urges a yoke-shaped stud against said pin to bias said tube, relative to said sleeve, towards the free end of the arm. Angular positioning of the tube and sleeve can be provided by cooperating longitudinal ribs.

Abstract: A hinge portion of a spectacle frame of generally lightweight construction is provided with essentially thin and limited vision obstructing side pieces. The hinge comprises a cam bearing flat metallic component fixedly secured to the respective side end of the front piece of the frame, and a subassembly comprising a ball-shaped cam follower and a spring urging the follower against the cam, the follower and the spring being guidedly housed in an axial bore provided in an elongated metallic body secured to a metallic side piece or to a metallic core of a lightweight side piece, forming the fore and hinge portion of the side piece and a part of an unitary metallic external structure therefor.