The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 07, 1982
Filed:
Jun. 18, 1980
Paul Casanova, Paris, FR;
Techniques Industrielles et Minieres, Paris, FR;
Abstract
The system for digging subterranean galeries comprises a cutting tool articulated on a frame and mounted so as to be movable along the height of the mine face. This frame is provided with ground support means and with propulsion means for following the progress of the cutting, the articulation point of the cutting tool being situated in the upper half of the system in operating position. The articulation point of the cutting tool may be situated on a member movable with respect to the frame and movable in a direction substantially parallel to the direction of advance. The shaft bearing the cutting tool may be mounted on two bearings, one of which is movable vertically to give the tool an oblique path in a pre-determined direction.