WORKING METHOD AND DEVICE OF ROCK OR CONCRETE

WIPO Patent Application WO/2006/117936

A1

A technology for working, e.g. exfoliating, crashing or boring, a rock or concrete by means of laser while preventing deposition of dross (glassy deposit). That technology is a device (1) for working a rock or concrete with a laser beam (41) comprising a laser oscillation means (10), a laser scanning means (30), laser transmission means (20, 21), and a laser irradiation means (40). Quantity of heat entering from laser into a rock or concrete is optimized by adjusting the intensity of the laser beam (41) being emitted from the laser irradiation means (40) and the laser irradiation time for a rock or concrete, or by shifting the laser irradiating position on a rock or concrete, and thermal shock is applied to a rock or concrete while preventing the rock or concrete from melting at the laser irradiating part so that partial fracture phenomenon takes place in the rock or concrete thus working the rock or concrete.

KOBAYASHI TOSHIO (JP)
OHMURA ETSUJI (JP)
NAKAMURA MASAHIRO (JP)
UETAKE SHIGEHITO (JP)

PCT/JP2006/305235

November 09, 2006

March 16, 2006

Click for automatic bibliography generation  

JAPAN DRILLING CO LTD (JP)
UNIV OSAKA (JP)
KOBAYASHI TOSHIO (JP)
OHMURA ETSUJI (JP)
NAKAMURA MASAHIRO (JP)
UETAKE SHIGEHITO (JP)

B28D1/00; H01S3/00

JP2003300787A	2003-10-21
JPH1119785A	1999-01-26
JP2000091678A	2000-03-31
JPS59107783A	1984-06-22

Kosugi, Yoshio (3-3 Nishi-shimbashi 3-chome, Minato-k, Tokyo 03, JP)

View/Download PDF      PDF Help

Previous Patent: DRILLING METHOD AND DEVICE OF STRATUM IN LIQUID

Next Patent: FALSE INLAY DECORATOR AND METHOD FOR PRODUCING THE SAME