Abstract: An elastic hinge for eyeglasses includes: a box-shaped housing with an inlet aperture; a fork carriage, slidably mounted in a guiding cavity inside the box-shaped housing opposing an elastic element; and an elastic holding clip, snap-engageable with a retaining structure of the housing cavity, against which one end of the elastic element abuts. The elastic holding clip is generally C-shaped, providing a resting arm and a flexible arm joined by a connecting portion, the flexible arm having an engaging unit to snap-engage with the retaining structure, the resting arm and flexible arm elastically biased one towards the other by inner walls of the housing. The flexible arm is integral with at least one bias element, accessible from an inlet aperture of the housing, defining bias planes to be engaged with a tool, introduced via the inlet, for imparting a disengaging bias, bending the flexing arm towards the resting arm.

Abstract: Rapid palatal expander provided with a first and a second main body actuatable to be moved along a longitudinal slide direction by an actuator element, and connected to at least one first and one second thread-like support arm intended to interact with opposite portions of a dental arch. The support arms comprise a transversely projecting portion, which is engaged in a shape relationship within an enlarged portion of a shaped seat obtained in the two main bodies. The shaped seat is extended on the external surface with an insertion opening of size at least equal to the transversely projecting portion.

Abstract: Nosepiece for eyeglass frames, which comprises a plate, an appendage projecting from the plate and comprising a convex portion, and a cup which is fixed to the frame of eyeglasses, is provided with two opposite lateral walls joined together by a connection wall, and houses the appendage. A screw is provided, engaged in first through holes of the cup, having the shank placed to traverse a second through hole of the appendage, the latter being susceptible of rotating with respect to the cup around a first longitudinal axis with the surface of its convex portion in contact and in sliding-with-friction relation with the internal surface of the connection wall of the cup, in order to maintain the plate in the angular position reached around the first longitudinal axis.

Abstract: Process for mounting an elastic hinge on an eyeglass frame, which provides for fixing a first pivot element to a first component of an eyeglass frame, for fixing a second pivot element to a second component of the eyeglass frame, and for engaging a hinge pin within first holes of the first pivot element and within second holes of the second pivot element, wherein a thinned portion of the hinge pin interferes with two head portions of the first pivot element in order to align the first holes of the first pivot element with the second holes of the second pivot element.

Abstract: Process for assembling an elastic hinge for eyeglass frames comprising a first articulation provided with a head with a first hole, a second articulation having two shoulders provided with second holes, and a pin having a stem provided with a thinned final portion. The process provides for inserting the head of the first articulation between the two shoulders of the second articulation with the first hole of the first articulation non-aligned with respect to the second holes of the second articulation, an opening thus remaining between such holes. A step for inserting the pin is provided, during which the thinned portion of the pin is wedged in the aforesaid opening between the holes and is screwed into one of the second holes of the shoulders of the second articulation.

Abstract: Rapid palatal expander made of a first and a second main body (5, 6) provided with aligned female threads (7, 8) that are engaged by the threaded stems (4) of an actuator element (2). This actuator element (2) is provided with a drive head (3) from which the stems (4) extend in opposite directions and aligned with opposite threads. Following the rotation of the drive head (2) the main bodies (5, 6) move parallel to the longitudinal extension direction Y of the actuator element (2). During the movement the main bodies (5, 6) are guided by a first and a second pair of rods (11, 12), which are fixed in a single body with the first and the second main body (5, 6), respectively, and are slidably mutually engaged with each other.

Abstract: Elastic hinge for eyeglass frames, provided with two pivot elements hinged together by means of a pin. A first pivot element is provided with an elastic device comprising a carriage provided, at an external end thereof, with a head portion having a first hole which is extended passing between its two lateral faces. A second pivot element comprises two shoulders provided with second holes and delimiting a slit between them in which the head portion is inserted. The head portion comprises a tilted slide surface, which is extended towards the external end of the carriage on at least one of the lateral faces of the head portion directed towards the head of the pin, covering at least one area adjacent to the first through hole.

Abstract: Rapid palatal expander which has an actuator element provided with a drive head and with two threaded stems, as well as a first and a second main bodies provided with aligned female threads, each engaged by a threaded stem of the actuator element for guiding a simultaneous movement of the main bodies. A plurality of longitudinal seats are provided on a peripheral surface of the drive head. A plate is connected to one of the two main bodies and is provided with a flexible tab elastically in abutment against the peripheral surface of the drive head and able to be selectively engaged with its profile in the longitudinal seats of the head at angular adjustment positions assumed by the latter.

Abstract: Nosepiece for eyeglass frames which comprises: a plate intended to abut against the nose of a user; a support arm for connecting the plate to the frame of eyeglasses; a cup which is extended as a prolongation of the support arm; an appendage which is projectingly extended from the rear face of the plate and is housed within the cup with two lateral faces thereof facing two lateral walls of the cup; coupling means for retaining the appendage housed within the cup. The appendage comprises a convex portion which is susceptible of rotating with respect to the cup with the surface of the convex portion in contact and in sliding-with-friction relation with the internal surface of the cup, in order to maintain the plate in the reached angular position.

Abstract: A method and system for authenticating products, include: one marker attachable to the product offered for sale; a software application installed on a portable personal device equipped with a sensor for detecting the marker and a channel for transmitting the acquired data to a communications network; a certification database accessible from the network, in which data on the marker and on the product are associated. The marker includes one pair of distinct codes uniquely correlated with one another inside the certification database, a freely accessible primary identification code and a secondary unlocking code that is concealed on the marker and is accessible only by a breakable seal that makes it apparent that it has been accessed. The primary code is uniquely tied in the database to general information on the product, and the secondary unlocking code is uniquely associated with identification data on the user in the database.

Abstract: Process for mounting an elastic hinge on an eyeglass frame, which provides for fixing a first pivot element to a first component of an eyeglass frame, for fixing a second pivot element to a second component of the eyeglass frame, and for engaging a hinge pin within first holes of the first pivot element and within second holes of the second pivot element, wherein a thinned portion of the hinge pin interferes with two head portions of the first pivot element in order to align the first holes of the first pivot element with the second holes of the second pivot element.

Abstract: Nosepiece for eyeglass frames which comprises: a plate intended to abut against the nose of a user; a support arm for connecting the plate to the frame of eyeglasses; a cup which is extended as a prolongation of the support arm; an appendage which is projectingly extended from the rear face of the plate and is housed within the cup with two lateral faces thereof facing two lateral walls of the cup; coupling means for retaining the appendage housed within the cup. The appendage comprises a convex portion which is susceptible of rotating with respect to the cup with the surface of the convex portion in contact and in sliding-with-friction relation with the internal surface of the cup, in order to maintain the plate in the reached angular position.

Abstract: Rapid palatal expander provided with one first and one second main body actuatable to be moved along a longitudinal slide direction by an actuator element, and connected by means of anchorage elements to at least one first and one second thread-like support arm intended to interact with opposite portions of a dental arch. The support arms comprise a transversely projecting portion, cylindrically asymmetrical, which is engaged in a shape relationship within an enlarged portion of a shaped seat obtained in the two main bodies. The shaped seat is extended on the external surface with an insertion opening of size at least equal to the transversely projecting portion.

Abstract: Rapid palatal expander which comprises an actuator element (2) provided with a drive head (3) and with two stems (4) with opposite threads, as well as a first and a second main body (5, 6) provided with aligned female threads (7, 8) that are each engaged by a threaded stem (4) of the actuator element (2). Guide means (9) are provided for guiding the simultaneous movement of the main bodies (5, 6) along the longitudinal extension direction Y of the actuator element (2) following the rotation of the drive head (2). Such guide means (9) comprise: a first and a second pair of rods (11, 12), which are fixed in a single body with the first and the second main body (5, 6), respectively, and are slidably mutually engaged with each other in a form relationship in order to guide the movement of the two main bodies (5, 6) with a single degree of freedom in the aforesaid longitudinal direction (Y).

Abstract: Nosepiece for eyeglass frames, which comprises a plate, an appendage projecting from the plate and comprising a convex portion, and a cup which is fixed to the frame of eyeglasses, is provided with two opposite lateral walls joined together by a connection wall, and houses the appendage. A screw is provided, engaged in first through holes of the cup, having the shank placed to traverse a second through hole of the appendage, the latter being susceptible of rotating with respect to the cup around a first longitudinal axis with the surface of its convex portion in contact and in sliding-with-friction relation with the internal surface of the connection wall of the cup, in order to maintain the plate in the angular position reached around the first longitudinal axis.

Abstract: Rapid palatal expander which comprises an actuator element (2) provided with a drive head (3) and two sterns (4) with opposite threads, as well as a first and a second main body (5, 6) provided with aligned female threads (7, 8), each, engaged by a threaded stern (4) of the actuator element (2). Guide means (9) are provided for guiding the simultaneous movement of the main bodies (5, 6) along the longitudinal extension direction Y of the actuator element (2) following the rotation of the drive head (2) and anti-rotation means for preventing the rotation of the drive head (3) in the second rotation sense opposite the first rotation sense to close the expander (1). Such anti-rotation means comprise a plurality of longitudinal seats (61) obtained on the peripheral surface (3A) of the drive head (3) and each having an abutment face (62) at least partially directed in the sense of the second rotation sense.

Abstract: Rapid palatal expander which comprises an actuator element (2) provided with a drive head (3) and with two stems (4) with opposite threads, as well as a first and a second main body (5, 6) provided with aligned female threads (7, 8) that are each engaged by a threaded stem (4) of the actuator element (2). Guide means (9) are provided for guiding the simultaneous movement of the main bodies (5, 6) along the longitudinal extension direction Y of the actuator element (2) following the rotation of the drive head (2). Such guide means (9) comprise: a first and a second pair of rods (11, 12), which are fixed in a single body with the first and the second main body (5, 6), respectively, and are slidably mutually engaged with each other in a form relationship in order to guide the movement of the two main bodies (5, 6) with a single degree of freedom in the aforesaid longitudinal direction (Y).

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: 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.