Abstract: An electronic built-in system for installation in a support structure mounted in a passenger compartment of a vehicle. The system includes at least one electronic module and a housing for receiving the electronic modules. The housing is mounted to the support structure of the vehicle and includes a front control panel with operating elements for operating the electronic system. The front control panel faces the passenger compartment. A cooling unit is provided in the housing for guiding cooling air through the housing for cooling the electronic module. At least one first opening in an outer wall portion of the housing supplies cooling air to the housing. At least one second opening in an outer wall portion of the housing removes the cooling air from the housing. The first and second openings are arranged at different wall portions of the housing, which are separated from the passenger compartment by the support structure when the built in system is installed in the support structure.

Abstract: A back-up tong for assembling or disassembling threaded joints of tubing for use in oil and gas wells is provided. The back-up tong has both a first and second gripping mechanism. The first gripping mechanism has a plurality of jaws for engaging the tubing to prevent rotation of the tubing in a clockwise direction and the second gripping mechanism has a plurality of jaws for engaging the tubing to prevent rotation of the tubing in a counter-clockwise direction.

Abstract: A self-tightening device for fastening two structures together includes a female component and a male component where the female component is capable of receiving the male component. The female component includes a moveable member, an energy storing mechanism and a retaining mechanism. The movable member is movable between an unlocked position and a locked position. The energy storing mechanism has stored energy for causing the moveable member to move from the unlocked to locked position when the energy in the energy-storing mechanism is released. The retaining mechanism holds the energy-storing mechanism in the stored-energy state until the retaining mechanism is released.

Abstract: A locking mechanism is provided for locking a removable data carrier in a support structure of an electronic device. The locking mechanism includes a movable locking element, indicating unit and a locking element control unit. The movable locking element is movable between a locked position and an unlocked position, where the locking element, in its locked position, prevents the removal of the data carrier from the support structure.

Abstract: A radio system for the reception of broadcast signals is provided that includes two antennas picking up radio signals and two signal receivers receiving the radio signals, the two antennas and the two receivers operating in diversity operating modes. The radio system further includes an antenna switching unit for creating a connection between the receivers and the antennas and a control unit for controlling the antenna switching unit and selecting the operating mode according to predetermined diversity control criterion.

Abstract: A medical device that can be used to cut a cornea. The device may include a blade that is coupled to a head by a blade holder. The device may also have a retention spring that exerts a force on the blade and blade holder. The head and blade can be moved across a ring by a drive assembly that contains a lead screw. The ring may contain one or more openings which have a length that is greater than a width. The openings may be coupled to a vacuum source by a tube. The vacuum pressure of the tube can be displayed by a console. The console may also have switches that allow different operating parameters to be entered through a single knob.

Abstract: A blade assembly that can be assembled into a microkeratome which is used to cut a cornea. The blade assembly is constructed in a manner that minimizes the tolerance of the cutting depth into the cornea. The blade assembly includes a blade holder that can be pressed onto a blade. The relative position of the blade holder can be calibrated to control the distance between a reference surface of the blade holder and the cutting edge of the blade. This distance defines the cutting depth of the blade. The blade holder is coupled to the blade with an interference fit that both secures the holder while providing for calibration of the assembly.

Abstract: Methods to test the operation of the pick-up coil without having to de-energize the power line serving as the power line carrier in order to perform testing on the pick-up coil. A series of test frequencies are introduced and parameters of the pick-up coil can be measured to detect the presence or absence of resonant behavior indicative of the health of the pick-up coil. Testing capabilities may be incorporated into a power line carrier receiver and use the connections between the pick-up coils and the receiver to perform the pick-up coil test. Various methods are disclosed for evaluating the pick-up coil response to a series of test inputs of different frequencies. These methods could be incorporated in a pick-up coil testing device that is independent of a receiver.