Abstract: A knee airbag for vehicles is provided. The knee airbag includes a lower crash pad that has a panel shape to block a steering column to prevent exposure of the steering column to an indoor space of a vehicle, and includes a housing unit having recesses dented toward the steering column such that the housing unit is spaced apart from the steering column by a designated distance. An airbag module of the knee airbag includes an inflator and a cushion and contained in the housing unit of the lower crash pad to deploy the cushion toward a driver's knee outside the lower crash pad when the cushion is deployed by explosion of the inflator.

Abstract: A steering column apparatus configured for vehicles may include a housing assembly, and a support assembly configured to be coupled to one side of the housing assembly to serve to absorb a tilt and an impact.

Abstract: A steering column assembly for a vehicle may include a buffer structure provided between a steering housing and a steering shaft inserted into the steering housing to distribute vibration applied thereto and to compensate for the distortion of the steering shaft and a clearance of the steering shaft with the steering housing, wherein a support structure is also provided to secure the support performance of the steering housing with respect to a mounting bracket in the event of a tilt and a longitudinal motion of the steering housing, ensuring the horizontal rigidity of the steering housing and reducing vibration applied thereto.

Abstract: A knee airbag for vehicles is provided. The knee airbag includes a lower crash pad that has a panel shape to block a steering column to prevent exposure of the steering column to an indoor space of a vehicle, and includes a housing unit having recesses dented toward the steering column such that the housing unit is spaced apart from the steering column by a designated distance. An airbag module of the knee airbag includes an inflator and a cushion and contained in the housing unit of the lower crash pad to deploy the cushion toward a driver's knee outside the lower crash pad when the cushion is deployed by explosion of the inflator.

Abstract: A steering column apparatus configured for vehicles may include a housing assembly, and a support assembly configured to be coupled to one side of the housing assembly to serve to absorb a tilt and an impact.

Abstract: A steering column assembly for a vehicle may include a buffer structure provided between a steering housing and a steering shaft inserted into the steering housing to distribute vibration applied thereto and to compensate for the distortion of the steering shaft and a clearance of the steering shaft with the steering housing, wherein a support structure is also provided to secure the support performance of the steering housing with respect to a mounting bracket in the event of a tilt and a longitudinal motion of the steering housing, ensuring the horizontal rigidity of the steering housing and reducing vibration applied thereto.

Abstract: Disclosed is a combination hood microwave oven, by which a room environment is maintained more pleasant and fresh by proving a microwave oven with an air curtain generating unit for preventing polluted air, which includes hot, smelling, or humid air produced from an oven range on cooking, from diffusing into a room. The present invention includes a cabinet disposed over an oven range, a cooking room having a predetermined cavity within the cabinet for cooking using an electromagnetic wave generated from a magnetron, a hood unit installed within the cabinet to discharge polluted air produced from the oven range on cooking, and an air curtain generating unit installed at a bottom side of the cabinet to prevent the polluted air from diffusing into a room.

Abstract: An automated laser diode testing and burn-in system is disclosed. Initial device data is obtained by applying current to the device at room temperature and measuring the device parameters. The device is then subjected to a burn-in process at higher temperatures. Device performance is monitored throughout the burn-in process. Upon termination of the burn-in process the devices are cooled to room temperature and the post burn-in device power is measured again under the same test conditions. If the device parameters have changed by more than a particular amount the device is rejected. Otherwise, the device is accepted and installed in the next level assembly.

Abstract: An automated laser diode testing and burn-in system is disclosed. Initial device data is obtained by applying current to the device at room temperature and measuring the device parameters. The device is then subjected to a burn-in process at higher temperatures. Device performance is monitored throughout the burn-in process. Upon termination of the burn-in process the devices are cooled to room temperature and the post burn-in device power is measured again under the same test conditions. If the device parameters have changed by more than a particular amount the device is rejected. Otherwise, the device is accepted and installed in the next level assembly.

Abstract: A laser marking system includes a high power fiber laser with a double clad fiber having a doped core surrounded by an inner pump cladding and providing an optical output for marking; a high power laser diode source for pumping the double clad fiber laser via an input into the inner pump cladding; an optical scanner coupled to receive the marking output from the double clad fiber laser to scan the output over a surface of an article to be marked by sweeping the marking output in one, two or three dimensions to form strokes, the completion of which comprises indicia to be marked on the article surface; and a controller to control the operation of the scanner synchronized with the modulation of the laser diode pump source to initiate the marking output and sweep and modulate the marking optical output in one, two or three dimensions to form strokes comprising the indicia.

Abstract: A laser marking system comprises a high power fiber laser consisting of a double clad fiber having a doped core surrounded by an inner pump cladding and providing an optical output for marking; a high power laser diode source for pumping the double clad fiber laser via an input into the inner pump cladding; an optical scanner coupled to receive the marking output from the double clad fiber laser to scan the output over a surface of an article to be marked by sweeping the marking output in one, two or three dimensions to form strokes, the completion of which comprises indicia to be marked the article surface; and a controller to control the operation of the scanner in synchronism with the modulation of the laser diode pump source to initiate the marking output and sweep and modulate the marking optical output in one, two or three dimensions to form strokes comprising the indicia. A main advantage of the fiber laser marking system over CO.sub.