Abstract: The invention relates to a safety brake system comprising a round rotatable shaft locked with a constant-on braking device activated by a spring and a switch-off device for the braking device that counteracts the spring, so that the shaft is unlocked and can rotate when the switch-off device is active. According to the invention the constant-on brake device comprises a brake shoe pushed against the shaft by the spring and the switch-off device is a piezo actuator that counteracts the spring. The brake system is normally constant on since the spring pushes the brake shoe against the shaft. When the shaft needs to rotate the piezo actuator counteracts the spring, thus releasing the brake shoe from the shaft. In case of an emergency or when the shaft needs to be locked, the power to the piezo activator is shut off and the spring pushes the brake shoe against the shaft to stop any rotation.

Abstract: Device 1 for fixation to the skull 2 of a patient that can serve as a fiducial marker in scan guided surgical operations using a surgical instrument. The device 1 comprises a material translucent for the applied electromagnetic waves of the scan and a fiducial marker and where the device 1 comprises means to fixate the device in a well-defined manner to the surgical instrument.

Abstract: Stepper motor with a housing 1,2,4,6,16, in which a cylindrical rotor 11,15 fixed on a central shaft 12 can rotate but not translate along an axial direction. There are cylindrical translators 9, 14 on both sides of the rotors 11, 15, where the translators 9, 14 are sealed fit in a cylindrical space within the housing 6 and around the central shaft 12 and where the translators 9, 14 can only translate in an axial direction, where in one axial position of a translator 9, 14 a set of triangular asymmetric teeth 20 located on the translator 9, 14 can interact and fit into a set of triangular asymmetric teeth 21 on the rotor 11, 15, where the shape of the teeth 21 on both sides of the rotor 11, 15 is symmetric and where one of the sets of teeth 20, 21 between one translator 9 (14) and the rotor 11 (15) and a set of teeth 20, 21 between the other translator 9 (14) and the rotor 11 (15) are tangentially shifted, i.e.

Abstract: Device 1 for fixation to the skull 2 of a patient that can serve as a fiducial marker in scan guided surgical operations using a surgical instrument. The device 1 comprises a material translucent for the applied electromagnetic waves of the scan and a fiducial marker and where the device 1 comprises means to fixate the device in a well-defined manner to the surgical instrument.

Abstract: Stepper motor with a housing 1,2,4,6,16, in which a cylindrical rotor 11,15 fixed on a central shaft 12 can rotate but not translate along an axial direction. There are cylindrical translators 9, 14 on both sides of the rotors 11, 15, where the translators 9, 14 are sealed fit in a cylindrical space within the housing 6 and around the central shaft 12 and where the translators 9, 14 can only translate in an axial direction, where in one axial position of a translator 9, 14 a set of triangular asymmetric teeth 20 located on the translator 9, 14 can interact and fit into a set of triangular asymmetric teeth 21 on the rotor 11, 15, where the shape of the teeth 21 on both sides of the rotor 11, 15 is symmetric and where one of the sets of teeth 20, 21 between one translator 9 (14) and the rotor 11 (15) and a set of teeth 20, 21 between the other translator 9 (14) and the rotor 11 (15) are tangentially shifted, i.e.

Abstract: The invention relates to a lamp, e.g. a UHP-Lamp, comprising a burner (10) with an ionizable filling and an amount of mercury contained therein, having a housing (30, 60; 20, 30) with at least one port (40), whereby the inner opening surface (50) area of the port/s is adapted to reduce the amount of mercury which is able to expose to the outside after an explosion of the burner (10).

Abstract: UV lamp for treatment of the skin, which lamp has a radiation capacity substantially entirely in the UV spectrum and in the red-light spectrum, wherein the radiation capacity of the lamp in the red light spectrum between 600 nm and 700 nm is at least 3% of the radiation capacity in the UV spectrum. In a first embodiment the lamp is a UV fluorescent lamp, having a first UV emitting phosphor and a second red light emitting phosphor, wherein the red light emitting phosphor is CeGdMgB5O10:Tb,Mn. In a second embodiment the lamp is a UV HID lamp, wherein the bulb of the lamp contains LiI and/or CaI2 as a red light radiation salt.

Abstract: The invention relates to a lighting device comprising a lamp comprising a burner with an ionizable filling and an amount of mercury contained herein, having at least one mercury absorbing/adsorbing and/or blocking means located outside the burner for the fixation of mercury in case of an explosion of the burner.

Abstract: The present invention relates to a ceramic gas tight high-pressure burner (1) comprising an ionisable filling, a method of manufacturing said ceramic gas tight high-pressure burner (1), and a lamp comprising said ceramic gas tight high-pressure burner (1), whereby said ceramic gas tight high-pressure burner (1) comprises a discharge vessel (2) having a discharge cavity (3) with a C)volume in the range of 3 mm3 to 30 mm3, and an internal filling pressure of the discharge cavity (3) in the range from 0.1 MPa to 4 MPa at room temperature. Furthermore the present invention relates to an end closure construction designed as a three-part, a two-part or a one-part end closure device (4) with a reduced crevice (11).

Abstract: A mercury-free high-pressure gas discharge lamp (HID [high intensity discharge] lamp) is described which is provided for use in automotive technology. To achieve improved lamp characteristics, in particular a substantially equal luminous efficacy in comparison with lamps of the same power and a mercury-free gas filling, as well as a highest possible burning voltage, the discharge vessel (1) is provided in its wall regions (10) which are lowermost in the operational position with a coating (15) which reflects at least a portion of the infrared radiation generated during operation, such that the temperature of the coldest spots, and in particular of the light-generating substances collected there, is raised, with the result that the light-generating substances can enter the gas phase in sufficient quantities also without mercury, and in particular with the use of a metal halide as a voltage-gradient generator.