摘要:
The present invention concerns a switch, preferably a steering column switch for an automobile, with which both control currents and load currents are to be controlled. The object of the present invention is to mostly prevent soil and scale from forming on the contact surfaces. The present invention achieves this object by transforming the grinding movement of the operating element into a movement of the contact points perpendicular to one another with the help of a mechanical control. Advantageous embodiments involve the design and positioning of the contact points as well as the design of the mechanical control and a method of assembling the switch according to the present invention.
摘要:
A focus-detector arrangement includes a radiation source with a focus, arranged on a first side of the subject, for generating a fan-shaped or conical beam of rays; at least one X-ray optical grating arranged in the beam path, with at least one phase grating arranged on the opposite second side of the subject in the beam path generating an interference pattern of the X-radiation preferably, in a particular energy range; and an analysis-detector system which detects at least the interference pattern generated by the phase grating in respect of its phase shift with position resolution. According to at least one embodiment of the invention, at least one X-ray optical grating including bars which are free from overhangs form shadows in the beam path of the fan-shaped or conical beam of rays.
摘要:
In a focus detector arrangement and method for an x-ray apparatus for generating projection or tomographic phase-contrast images of an examination subject, a beam of coherent x-rays is generated by an anode that has areas of different radiation emission characteristics arranged in bands thereon, that proceed parallel to grid lines of a phase grid that is used to generate the phase-contrast images.
摘要:
A reset device for a blinker switch includes a pivoting reset element which is used which has two lateral arms on which opposing springs extending through the switch housing act. These springs both tension the reset element with respect to the steering spindle and produce a torque tending to restore the reset element to its middle setting. The problem of the invention is to do without the conventional draw springs. The invention solves this problem by means of a single compression spring acting on the reset element and providing both a force in the longitudinal direction of the reset element and the desired restoring torque.
摘要:
The invention relates to a device for pressing a cooler against a battery, said cooler having at least one cooling surface for absorbing or dissipating thermal energy, and the battery having at least one contact surface for the cooling surface of the cooler to rest on. The device comprises a pressure part having at least one spring-elastic pressure element for transmitting a contact pressure onto a section of the surface of the cooler facing away from the battery. The device further comprises at least one suspension unit for suspending the pressure part on the battery, said suspension unit being designed such as to generate a suspension force which is counter to the contact force when the cooler is arranged on the battery and the suspension unit is suspended on the battery.
摘要:
The invention relates to a heat exchanger for motor vehicles, especially for utility vehicles. The heat exchanger can include a heat exchanger unit that includes tubes having tube ends and ribs disposed between the tubes, and collecting tanks disposed on both ends and produced by internal high pressure forming for introducing and discharging a medium. The collecting tanks can include bottoms with openings for receiving the tube ends, covers, and inlet and outlet tubes.
摘要:
A method and a measurement system are disclosed for the noninvasive determination of properties of an object to be examined and to the use of a contrast medium for X-ray phase-contrast measurement. in at least one embodiment of the invention, a mixture (suspension) consisting of a base liquid and a multiplicity of particles contained therein is used, the refractive index of the base liquid being different to the refractive index of the particles.
摘要:
A method and a measurement system are disclosed for the noninvasive determination of properties of an object to be examined and to the use of a contrast medium for X-ray phase-contrast measurement. in at least one embodiment of the invention, a mixture (suspension) consisting of a base liquid and a multiplicity of particles contained therein is used, the refractive index of the base liquid being different to the refractive index of the particles.
摘要:
A focus-detector arrangement and an X-ray apparatus for generating projective or tomographic phase contrast recordings of a subject are disclosed. In at least one embodiment, the focus-detector arrangement includes a radiation source with a focus, arranged on a first side of the subject, for generating a fan-shaped or conical beam of rays; at least one X-ray optical grating arranged in the beam path, with at least one phase grating arranged on the opposite second side of the subject in the beam path generating an interference pattern of the X-radiation preferably, in a particular energy range; and an analysis-detector system which detects at least the interference pattern generated by the phase grating in respect of its phase shift with position resolution. According to at least one embodiment of the invention, at least one X-ray optical grating including bars which are free from overhangs form shadows in the beam path of the fan-shaped or conical beam of rays.
摘要:
A heat exchanger is provided having a tube block having a plurality of essentially parallel tubes for carrying a temperature control fluid, wherein at least the ends of the tubes are connected to one another. In addition, the heat exchanger comprises at least one header box that is designed to receive a temperature control fluid from the tubes, wherein the at least one header box has an inside height that corresponds within a tolerance range to the height of the ends of the tubes and wherein the header box is placed over the ends of the tubes and is joined thereto in a material-to-material fashion.