1
Takashi Matsumoto, Shinichi Kazui, Hideaki Sasaki, Tateoki Miyauchi, Tatsuji Sakamoto: Laser cleavage cutting method and system. Hitachi, Fay Sharpe Beall Fagan Minnich & McKee, October 19, 1999: US05968382 (76 worldwide citation)

A cutting system for cutting a workpiece by laser emission relies upon local cooling of the workpiece at the point at which cutting starts and ends. Optionally, local cooling can also be provided at a cross point where two cutting lines intersect. Relying upon the difference in thermal stress betwee ...


2
DRILL WITH REMOTELY CONTROLLED OPERATING MODES AND SYSTEM AND METHOD FOR PROVIDING THE SAME. February 7, 2019: US20190040686-A1

The present invention relates to a drilling system with a multi-function drill head used in, among other applications, oil and gas drilling. The system is used to enhance the effective permeability of an oil and/or gas reservoir by drilling or cutting new structures into the reservoir. The system is ...