Shield tunneling apparatus

Details Shield tunneling apparatus Shield tunneling apparatus

E - Fixed Constructions

21

D

262/54

E21D 9/08 (2006.01) G01C 7/06 (2006.01)

Patent

CA 2038793

A shield tunnelling apparatus is provided that includes a first tubular shield body in which a cutter assembly for excavation and a drive mechanism for driving the cutter assembly are disposed; a second shield body connected to the rear of the first shield body so as to have a common axis therewith; a target disposed in the first shield body so as to receive a light ray directed along the axis; first optical path changing means disposed in the second shield body and capable of changing the optical path of the light ray directed toward the target such that the light ray travels along an optical path displaced away from the axis; and second optical path changing means disposed in the second shield body and capable of changing the optical path of the light ray passing through the first optical path changing means such that the light ray is again directed along the axis.

Affiliated with

Also associated with

Rating

Shield tunneling apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Shield tunneling apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Shield tunneling apparatus will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-2069359