Resources Contact Us Home
Laser emission head, laser beam transmission device, laser beam transmission device adjustment method and preventive maintenance/repair device of structure in nuclear reactor

Image Number 13 for United States Patent #6881925.

A laser emitting head for irradiating a portion to be machined with laser beams outputted from a laser unit (624) incorporates an emitting head body having a light guide member (625) in the head for guiding the laser beams; a light converging lens (677) for converging the laser beams transmitted from the light guide member in the head; a reflecting mirror (678) for irradiating the portion to be machined with the converged laser beams; mirror rotating means (684) for holding the reflecting mirror to be rotative around the optical axis of the laser beam; distance-adjustment means (674) for adjusting the relative distance between the reflecting mirror and the converging lens; and moving means (665) for moving the reflecting mirror and the converging lens such that the relative distance is maintained so that the light guide member in the head. The converging lens and the reflecting mirror can be introduced/discharged with respect to a portion to be machined and formed in a narrow gap in an incore structure. As a result, a preventive-maintenance/repair operation using laser beams and arranged to be performed in a narrow gap in the incore structure can safely and efficiently be performed.

  Recently Added Patents
Method and system for remote delivery of email
Prioritizing application data for transmission in a wireless user device
Inspection tool for top guides of a boiling water reactor
Variable delay line for delay locked loop
Content display system
Treatment devices with deliver-activated inflatable members, and associated systems and methods for treating the spinal cord and other tissues
1,3-diiodohydantoin compound and production method thereof
  Randomly Featured Patents
Decarboxylation process
Method and device for measuring at least one characteristic length on a fuel rod arranged at the periphery of a nuclear fuel assembly
Component embedded printed circuit board
Seat levelling device
Acoustic adiabatic liquid quantity sensor
Nucleic acids encoding human NIK protein
Semiconductor device having pad structure with stress buffer layer
Communication device and an electric circuit for a communication device
Receiving apparatus and control method
Use of undercylenic acid to treat herpes labialis