Abstract: A spring hinge for spectacles is described having a hinge part (2) forming a bearing fork (1) for a hinge axis (3), having a guide head (6), which is provided between the two fork legs (8) of the bearing fork (1) and is fastenable on a spectacle part (7), for the hinge part (2), and having a coiled spring (13) between the guide head (6) and the hinge part (2), which is displaceable in relation to the guide head (6), on the side of the guide head (6) facing away from the hinge axis (3). To provide simple design conditions, it is proposed that the section of the hinge part (2) accommodating the coiled spring (13) be implemented as a hinge housing (11), and the guide head (6) comprise a middle part (9), which penetrates the bearing fork (1) of the hinge part (2) between the two fork legs (8) and forms a pivot axis for the hinge housing (11), having lateral guide flanges (10) which encompass the fork legs (8) on both sides.

Abstract: The invention relates to a dental prosthesis, comprising an implant body (1) and an abutment (2) that can be inserted into a receptacle of the implant body (1), said abutment (2) forming a passage opening (4) for accommodating a cap screw (3) that engages in an internal thread (5) of the implant body (1), which screw is supported by means of a conical cap part (7) of the cap screw (3) on a conical shoulder (8) of the abutment (2). In order to provide advantageous constructional conditions it is proposed that the conical cap part (7) has at least two consecutive conical sections (9, 10) in the axial direction, which conical sections have an opening angle that differs from the opening angle of the conical shoulder (8), and when the one conical section (9) contacts the conical shoulder (8) without pressure the other conical section (10) engages in the shoulder cone (11) with play.

Abstract: The invention relates to a dental prosthesis, comprising an implant body (1) and an abutment (2) that can be inserted into a receptacle of the implant body (1), said abutment (2) forming a passage opening (4) for accommodating a cap screw (3) that engages in an internal thread (5) of the implant body (1), which screw is supported by means of a conical cap part (7) of the cap screw (3) on a conical shoulder (8) of the abutment (2). In order to provide advantageous constructional conditions it is proposed that the conical cap part (7) has at least two consecutive conical sections (9, 10) in the axial direction, which conical sections have an opening angle that differs from the opening angle of the conical shoulder (8), and when the one conical section (9) contacts the conical shoulder (8) without pressure the other conical section (10) engages in the shoulder cone (11) with play.

Abstract: A spring hinge for spectacles is described, comprising two hinge parts (1, 2) which are connected with each other by a hinge axis (3), of which one forms a bearing bracket (4) for the other hinge part (2) which is displaceably guided in a housing (7) with the help of a sliding element (6), and comprising a coiled spring (14) which rests on a web (8) of the sliding element (6) on the one hand and on an abutment (13) fixed to the housing on the other hand, which abutment is inserted into the housing (7) through a through opening (16) in the hinge part (2) with the sliding element (6) coaxially to the coiled spring (14). In order to achieve a short overall length it is proposed that the abutment (13) comprises a sleeve (15) accommodating the hinge-side end of the coiled spring (14), which sleeve protrudes beyond the housing (7) into the region of the hinge axis (3).

Abstract: A spring hinge between a bow cheek and a bow of a pair of spectacles is described, having two hinge parts (3, 4), which are each associated with one of these spectacle parts (1, 2), one of which forms a bearing fork (6) having a hinge axis (5) for receiving the other hinge part (4), which is guided so it is displaceable in a housing (9) with the aid of a U-shaped sliding part (7), and having a coiled spring (12) situated between the two legs (11) of the sliding part (7), which is supported on one side on a web (13) of the sliding part (7) connecting the two legs (11) and on the other side on a buttress (14), which engages through a through opening (16) of the associated hinge part (4), which runs coaxially to the coiled spring (12), in a nut thread (15) of the housing (9) which is coaxial to the coiled spring (12).

Abstract: A spring hinge between a bow cheek and a bow of a pair of spectacles is described, having two hinge parts (3, 4), each associated with one of these spectacle parts (1, 2), one of which forms a bearing fork (6) having a hinge axis (5) for receiving the other hinge part (3), which is guided so it is displaceable with the aid of a sliding part (7) in a housing (9), and having a coiled spring (13) situated between two legs (12) of the sliding part (7), which is supported on one side on a web (14) of the sliding part (7) connecting the two legs (12) and on the other side on a housing-fixed buttress. In order to achieve simple installation conditions, it is proposed that the housing (9) has a closure part, which forms a receptacle opening (8) of the associated spectacle part (1) for the sliding part (7), and which forms the buttress for the coiled spring (13).

Abstract: A spring hinge for spectacles is described having a central hinge lobe (4) guided so it is displaceable in a bow-side housing (1) in the bow longitudinal direction and having a U-shaped sliding part (3) projecting from the hinge lobe (4) in the displacement direction and engaging in a housing recess (2), which receives a coiled spring (10) between its two legs (7), which is supported at one end on the web (6) connecting the two legs (7) of the U-shaped sliding part (3) and at the other end on a buttress (11), which is held removably in the housing (1) by a rotational adjustment coaxial to the coiled spring (10), the hinge lobe (4) having a through opening (17) running coaxially to the coiled spring (10).