Method for monitoring slope lands and buildings on the slope...

Details Method for monitoring slope lands and buildings on the slope... Method for monitoring slope lands and buildings on the slope...

2006-10-17

2006-10-17

Stafira, Michael P. (Department: 2877)

Optics: measuring and testing

Angle measuring or angular axial alignment

C356S139100

Reexamination Certificate

active

07123353

ABSTRACT:
A method for monitoring slope lands and buildings on the slope lands includes installing a light transceiver on a slope land and a light emission device on a location or a building corresponding to the light transceiver. When light emitted from the light emission device is received by the light transceiver, the light transceiver does not output signals. The light transceiver does not receive the light emitted from the light emission device when the dislocation or inclination occurs to the slope land and the light transceiver outputs a signal to alert a monitor center.

REFERENCES:
patent: 4171907 (1979-10-01), Hill et al.
patent: 5022763 (1991-06-01), Vuagnat
patent: 5055666 (1991-10-01), Miyahara
patent: 5486690 (1996-01-01), Ake
patent: 5898490 (1999-04-01), Ohtomo et al.
patent: 6037874 (2000-03-01), Heironimus
patent: 7-198337 (1995-08-01), None
patent: 2003-315114 (2003-11-01), None

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