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 19 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
Vehicle hood
System and method for multi-tiered meta-data caching and distribution in a clustered computer environment
Cake knife handle
Measuring device and measuring method that use pulsed electromagnetic wave
Apparatus for tuning a musical instrument, and a related instrument
Curable inks comprising surfactant-coated magnetic nanoparticles
Method and system for distributing load by redirecting traffic
  Randomly Featured Patents
Knee grip cover for motorcycles
Modified immunoglobin molecules and methods for use thereof
Method for establishing variable path group associations and affiliations between "non-static" MP systems and shared devices
Activation of blowing agents
Method of analyzing and modifying a footprint
Method for compensating filtering delays in a spread-spectrum receiver
Method for removal of chloramines from drinking water
Hybrid hard disk drive control method and recording medium and apparatus suitable therefore
Apparatus for handling articles
Medical bag