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:
Oct. 16, 1979
Filed:
Jan. 17, 1978
Applicant:
Inventor:
Marcel Montacie, Paris, FR;
Assignee:
Bouygues, Clamart, FR;
Primary Examiner:
Int. Cl.
CPC ...
E21C / ;
U.S. Cl.
CPC ...
299 61 ; 299 86 ;
Abstract
The invention relates to a continuous boring or cutting machine provided with tools animated by a sweeping movement, said machine comprising a plurality of tool-holders mounted to oscillate on a rotating structure, these oscillations being controlled in synchronism by a rotary jack coaxial with respect to the rotating structure, the rod of the jack being fast with an element to which each tool-holder is connected by a connecting rod having a foot jointed on to said element and having a head jointed on to the tool-holder. The invention is more particularly applied to tunneling machines.